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-rw-r--r--arch/cris/arch-v32/kernel/Makefile18
-rw-r--r--arch/cris/arch-v32/kernel/cache.c34
-rw-r--r--arch/cris/arch-v32/kernel/cacheflush.S100
-rw-r--r--arch/cris/arch-v32/kernel/crisksyms.c26
-rw-r--r--arch/cris/arch-v32/kernel/debugport.c232
-rw-r--r--arch/cris/arch-v32/kernel/entry.S909
-rw-r--r--arch/cris/arch-v32/kernel/fasttimer.c793
-rw-r--r--arch/cris/arch-v32/kernel/head.S439
-rw-r--r--arch/cris/arch-v32/kernel/irq.c520
-rw-r--r--arch/cris/arch-v32/kernel/kgdb.c1593
-rw-r--r--arch/cris/arch-v32/kernel/kgdb_asm.S552
-rw-r--r--arch/cris/arch-v32/kernel/process.c180
-rw-r--r--arch/cris/arch-v32/kernel/ptrace.c492
-rw-r--r--arch/cris/arch-v32/kernel/setup.c163
-rw-r--r--arch/cris/arch-v32/kernel/signal.c541
-rw-r--r--arch/cris/arch-v32/kernel/time.c345
-rw-r--r--arch/cris/arch-v32/kernel/traps.c196
17 files changed, 0 insertions, 7133 deletions
diff --git a/arch/cris/arch-v32/kernel/Makefile b/arch/cris/arch-v32/kernel/Makefile
deleted file mode 100644
index 2db7e4f7c1fa..000000000000
--- a/arch/cris/arch-v32/kernel/Makefile
+++ /dev/null
@@ -1,18 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the linux kernel.
-#
-
-extra-y := head.o
-
-
-obj-y := entry.o traps.o irq.o debugport.o \
- process.o ptrace.o setup.o signal.o traps.o time.o \
- cache.o cacheflush.o
-
-obj-$(CONFIG_ETRAX_KGDB) += kgdb.o kgdb_asm.o
-obj-$(CONFIG_ETRAX_FAST_TIMER) += fasttimer.o
-obj-$(CONFIG_MODULES) += crisksyms.o
-
-clean:
-
diff --git a/arch/cris/arch-v32/kernel/cache.c b/arch/cris/arch-v32/kernel/cache.c
deleted file mode 100644
index a080d2fa4803..000000000000
--- a/arch/cris/arch-v32/kernel/cache.c
+++ /dev/null
@@ -1,34 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <asm/io.h>
-#include <arch/cache.h>
-#include <arch/hwregs/dma.h>
-
-/* This file is used to workaround a cache bug, Guinness TR 106. */
-
-inline void flush_dma_descr(struct dma_descr_data *descr, int flush_buf)
-{
- /* Flush descriptor to make sure we get correct in_eop and after. */
- asm volatile ("ftagd [%0]" :: "r" (descr));
- /* Flush buffer pointed out by descriptor. */
- if (flush_buf)
- cris_flush_cache_range(phys_to_virt((unsigned)descr->buf),
- (unsigned)(descr->after - descr->buf));
-}
-EXPORT_SYMBOL(flush_dma_descr);
-
-void flush_dma_list(struct dma_descr_data *descr)
-{
- while (1) {
- flush_dma_descr(descr, 1);
- if (descr->eol)
- break;
- descr = phys_to_virt((unsigned)descr->next);
- }
-}
-EXPORT_SYMBOL(flush_dma_list);
-
-/* From cacheflush.S */
-EXPORT_SYMBOL(cris_flush_cache);
-/* From cacheflush.S */
-EXPORT_SYMBOL(cris_flush_cache_range);
diff --git a/arch/cris/arch-v32/kernel/cacheflush.S b/arch/cris/arch-v32/kernel/cacheflush.S
deleted file mode 100644
index 2a54d793f96c..000000000000
--- a/arch/cris/arch-v32/kernel/cacheflush.S
+++ /dev/null
@@ -1,100 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
- .global cris_flush_cache_range
- .type cris_flush_cache_range, @function
-cris_flush_cache_range:
- move.d 1024, $r12
- cmp.d $r11, $r12
- bhi cris_flush_1KB
- nop
- add.d $r10, $r11
- ftagd [$r10]
-cris_flush_last:
- addq 32, $r10
- cmp.d $r11, $r10
- blt cris_flush_last
- ftagd [$r10]
- ret
- nop
-cris_flush_1KB:
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ftagd [$r10]
- addq 32, $r10
- ba cris_flush_cache_range
- sub.d $r12, $r11
- .size cris_flush_cache_range, . - cris_flush_cache_range
-
- .global cris_flush_cache
- .type cris_flush_cache, @function
-cris_flush_cache:
- moveq 0, $r10
-cris_flush_line:
- move.d 16*1024, $r11
- addq 16, $r10
- cmp.d $r10, $r11
- blt cris_flush_line
- fidxd [$r10]
- ret
- nop
- .size cris_flush_cache, . - cris_flush_cache
-
diff --git a/arch/cris/arch-v32/kernel/crisksyms.c b/arch/cris/arch-v32/kernel/crisksyms.c
deleted file mode 100644
index 8cc8ad1cb532..000000000000
--- a/arch/cris/arch-v32/kernel/crisksyms.c
+++ /dev/null
@@ -1,26 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <linux/irq.h>
-#include <arch/dma.h>
-#include <arch/intmem.h>
-#include <mach/pinmux.h>
-
-/* Functions for allocating DMA channels */
-EXPORT_SYMBOL(crisv32_request_dma);
-EXPORT_SYMBOL(crisv32_free_dma);
-
-/* Functions for handling internal RAM */
-EXPORT_SYMBOL(crisv32_intmem_alloc);
-EXPORT_SYMBOL(crisv32_intmem_free);
-EXPORT_SYMBOL(crisv32_intmem_phys_to_virt);
-EXPORT_SYMBOL(crisv32_intmem_virt_to_phys);
-
-/* Functions for handling pinmux */
-EXPORT_SYMBOL(crisv32_pinmux_alloc);
-EXPORT_SYMBOL(crisv32_pinmux_alloc_fixed);
-EXPORT_SYMBOL(crisv32_pinmux_dealloc);
-EXPORT_SYMBOL(crisv32_pinmux_dealloc_fixed);
-
-/* Functions masking/unmasking interrupts */
-EXPORT_SYMBOL(crisv32_mask_irq);
-EXPORT_SYMBOL(crisv32_unmask_irq);
diff --git a/arch/cris/arch-v32/kernel/debugport.c b/arch/cris/arch-v32/kernel/debugport.c
deleted file mode 100644
index 69247fd2090a..000000000000
--- a/arch/cris/arch-v32/kernel/debugport.c
+++ /dev/null
@@ -1,232 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2003, Axis Communications AB.
- */
-
-#include <linux/console.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/ser_defs.h>
-#include <hwregs/dma_defs.h>
-#include <mach/pinmux.h>
-
-struct dbg_port
-{
- unsigned char nbr;
- unsigned long instance;
- unsigned int started;
- unsigned long baudrate;
- unsigned char parity;
- unsigned int bits;
-};
-
-struct dbg_port ports[] =
-{
- {
- 0,
- regi_ser0,
- 0,
- 115200,
- 'N',
- 8
- },
- {
- 1,
- regi_ser1,
- 0,
- 115200,
- 'N',
- 8
- },
- {
- 2,
- regi_ser2,
- 0,
- 115200,
- 'N',
- 8
- },
- {
- 3,
- regi_ser3,
- 0,
- 115200,
- 'N',
- 8
- },
-#if CONFIG_ETRAX_SERIAL_PORTS == 5
- {
- 4,
- regi_ser4,
- 0,
- 115200,
- 'N',
- 8
- },
-#endif
-};
-
-static struct dbg_port *port =
-#if defined(CONFIG_ETRAX_DEBUG_PORT0)
- &ports[0];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
- &ports[1];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
- &ports[2];
-#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
- &ports[3];
-#else
- NULL;
-#endif
-
-#ifdef CONFIG_ETRAX_KGDB
-static struct dbg_port *kgdb_port =
-#if defined(CONFIG_ETRAX_KGDB_PORT0)
- &ports[0];
-#elif defined(CONFIG_ETRAX_KGDB_PORT1)
- &ports[1];
-#elif defined(CONFIG_ETRAX_KGDB_PORT2)
- &ports[2];
-#elif defined(CONFIG_ETRAX_KGDB_PORT3)
- &ports[3];
-#elif defined(CONFIG_ETRAX_KGDB_PORT4)
- &ports[4];
-#else
- NULL;
-#endif
-#endif
-
-static void start_port(struct dbg_port *p)
-{
- /* Set up serial port registers */
- reg_ser_rw_tr_ctrl tr_ctrl = {0};
- reg_ser_rw_tr_dma_en tr_dma_en = {0};
-
- reg_ser_rw_rec_ctrl rec_ctrl = {0};
- reg_ser_rw_tr_baud_div tr_baud_div = {0};
- reg_ser_rw_rec_baud_div rec_baud_div = {0};
-
- if (!p || p->started)
- return;
-
- p->started = 1;
-
- if (p->nbr == 1)
- crisv32_pinmux_alloc_fixed(pinmux_ser1);
- else if (p->nbr == 2)
- crisv32_pinmux_alloc_fixed(pinmux_ser2);
- else if (p->nbr == 3)
- crisv32_pinmux_alloc_fixed(pinmux_ser3);
-#if CONFIG_ETRAX_SERIAL_PORTS == 5
- else if (p->nbr == 4)
- crisv32_pinmux_alloc_fixed(pinmux_ser4);
-#endif
-
- tr_ctrl.base_freq = rec_ctrl.base_freq = regk_ser_f29_493;
- tr_dma_en.en = rec_ctrl.dma_mode = regk_ser_no;
- tr_baud_div.div = rec_baud_div.div = 29493000 / p->baudrate / 8;
- tr_ctrl.en = rec_ctrl.en = 1;
-
- if (p->parity == 'O') {
- tr_ctrl.par_en = regk_ser_yes;
- tr_ctrl.par = regk_ser_odd;
- rec_ctrl.par_en = regk_ser_yes;
- rec_ctrl.par = regk_ser_odd;
- } else if (p->parity == 'E') {
- tr_ctrl.par_en = regk_ser_yes;
- tr_ctrl.par = regk_ser_even;
- rec_ctrl.par_en = regk_ser_yes;
- rec_ctrl.par = regk_ser_odd;
- }
-
- if (p->bits == 7) {
- tr_ctrl.data_bits = regk_ser_bits7;
- rec_ctrl.data_bits = regk_ser_bits7;
- }
-
- REG_WR (ser, p->instance, rw_tr_baud_div, tr_baud_div);
- REG_WR (ser, p->instance, rw_rec_baud_div, rec_baud_div);
- REG_WR (ser, p->instance, rw_tr_dma_en, tr_dma_en);
- REG_WR (ser, p->instance, rw_tr_ctrl, tr_ctrl);
- REG_WR (ser, p->instance, rw_rec_ctrl, rec_ctrl);
-}
-
-#ifdef CONFIG_ETRAX_KGDB
-/* Use polling to get a single character from the kernel debug port */
-int getDebugChar(void)
-{
- reg_ser_rs_stat_din stat;
- reg_ser_rw_ack_intr ack_intr = { 0 };
-
- do {
- stat = REG_RD(ser, kgdb_port->instance, rs_stat_din);
- } while (!stat.dav);
-
- /* Ack the data_avail interrupt. */
- ack_intr.dav = 1;
- REG_WR(ser, kgdb_port->instance, rw_ack_intr, ack_intr);
-
- return stat.data;
-}
-
-/* Use polling to put a single character to the kernel debug port */
-void putDebugChar(int val)
-{
- reg_ser_r_stat_din stat;
- do {
- stat = REG_RD(ser, kgdb_port->instance, r_stat_din);
- } while (!stat.tr_rdy);
- REG_WR_INT(ser, kgdb_port->instance, rw_dout, val);
-}
-#endif /* CONFIG_ETRAX_KGDB */
-
-static void __init early_putch(int c)
-{
- reg_ser_r_stat_din stat;
- /* Wait until transmitter is ready and send. */
- do
- stat = REG_RD(ser, port->instance, r_stat_din);
- while (!stat.tr_rdy);
- REG_WR_INT(ser, port->instance, rw_dout, c);
-}
-
-static void __init
-early_console_write(struct console *con, const char *s, unsigned n)
-{
- extern void reset_watchdog(void);
- int i;
-
- /* Send data. */
- for (i = 0; i < n; i++) {
- /* TODO: the '\n' -> '\n\r' translation should be done at the
- receiver. Remove it when the serial driver removes it. */
- if (s[i] == '\n')
- early_putch('\r');
- early_putch(s[i]);
- reset_watchdog();
- }
-}
-
-static struct console early_console_dev __initdata = {
- .name = "early",
- .write = early_console_write,
- .flags = CON_PRINTBUFFER | CON_BOOT,
- .index = -1
-};
-
-/* Register console for printk's, etc. */
-int __init init_etrax_debug(void)
-{
- start_port(port);
-
- /* Register an early console if a debug port was chosen. */
- register_console(&early_console_dev);
-
-#ifdef CONFIG_ETRAX_KGDB
- start_port(kgdb_port);
-#endif /* CONFIG_ETRAX_KGDB */
- return 0;
-}
diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
deleted file mode 100644
index 0793a52b2c34..000000000000
--- a/arch/cris/arch-v32/kernel/entry.S
+++ /dev/null
@@ -1,909 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2000-2003 Axis Communications AB
- *
- * Authors: Bjorn Wesen (bjornw@axis.com)
- * Tobias Anderberg (tobiasa@axis.com), CRISv32 port.
- *
- * Code for the system-call and fault low-level handling routines.
- *
- * NOTE: This code handles signal-recognition, which happens every time
- * after a timer-interrupt and after each system call.
- *
- * Stack layout in 'ret_from_system_call':
- * ptrace needs to have all regs on the stack.
- * if the order here is changed, it needs to be
- * updated in fork.c:copy_process, signal.c:do_signal,
- * ptrace.c and ptrace.h
- *
- */
-
-#include <linux/linkage.h>
-#include <linux/sys.h>
-#include <asm/unistd.h>
-#include <asm/errno.h>
-#include <asm/thread_info.h>
-#include <asm/asm-offsets.h>
-
-#include <hwregs/asm/reg_map_asm.h>
-#include <hwregs/asm/intr_vect_defs_asm.h>
-
- ;; Exported functions.
- .globl system_call
- .globl ret_from_intr
- .globl ret_from_fork
- .globl ret_from_kernel_thread
- .globl resume
- .globl multiple_interrupt
- .globl nmi_interrupt
- .globl spurious_interrupt
- .globl do_sigtrap
- .globl gdb_handle_exception
- .globl sys_call_table
-
- ; Check if preemptive kernel scheduling should be done.
-#ifdef CONFIG_PREEMPT
-_resume_kernel:
- di
- ; Load current task struct.
- movs.w -8192, $r0 ; THREAD_SIZE = 8192
- and.d $sp, $r0
-
- addoq +TI_preempt_count, $r0, $acr
- move.d [$acr], $r10 ; Preemption disabled?
- bne _Rexit
- nop
-
-_need_resched:
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r10
- btstq TIF_NEED_RESCHED, $r10 ; Check if need_resched is set.
- bpl _Rexit
- nop
-
- ; Do preemptive kernel scheduling.
- jsr preempt_schedule_irq
- nop
-
- ; Load new task struct.
- movs.w -8192, $r0 ; THREAD_SIZE = 8192.
- and.d $sp, $r0
-
- ; One more time with new task.
- ba _need_resched
- nop
-#else
-#define _resume_kernel _Rexit
-#endif
-
- ; Called at exit from fork. schedule_tail must be called to drop
- ; spinlock if CONFIG_PREEMPT.
- .type ret_from_fork,@function
-ret_from_fork:
- jsr schedule_tail
- nop
- ba ret_from_sys_call
- nop
- .size ret_from_fork, . - ret_from_fork
-
- .type ret_from_kernel_thread,@function
-ret_from_kernel_thread:
- jsr schedule_tail
- nop
- move.d $r2, $r10
- jsr $r1
- nop
- moveq 0, $r9 ; no syscall restarts, TYVM...
- ba ret_from_sys_call
- nop
- .size ret_from_kernel_thread, . - ret_from_kernel_thread
-
- .type ret_from_intr,@function
-ret_from_intr:
- moveq 0, $r9 ; not a syscall
-
- ;; Check for resched if preemptive kernel, or if we're going back to
- ;; user-mode. This test matches the user_regs(regs) macro. Don't simply
- ;; test CCS since that doesn't necessarily reflect what mode we'll
- ;; return into.
- addoq +PT_ccs, $sp, $acr
- move.d [$acr], $r0
- btstq 16, $r0 ; User-mode flag.
- bpl _resume_kernel
- .size ret_from_intr, . - ret_from_intr + 2 ; +2 includes the dslot.
-
- ; Note that di below is in delay slot.
- .type _resume_userspace,@function
-_resume_userspace:
- di ; So need_resched and sigpending don't change.
-
- movs.w -8192, $r0 ; THREAD_SIZE == 8192
- and.d $sp, $r0
-
- addoq +TI_flags, $r0, $acr ; current->work
- move.d [$acr], $r10
- and.d _TIF_WORK_MASK, $r10 ; Work to be done on return?
- bne _work_pending
- nop
- ba _Rexit
- nop
- .size _resume_userspace, . - _resume_userspace
-
- ;; The system_call is called by a BREAK instruction, which looks pretty
- ;; much like any other exception.
- ;;
- ;; System calls can't be made from interrupts but we still stack ERP
- ;; to have a complete stack frame.
- ;;
- ;; In r9 we have the wanted syscall number. Arguments come in r10,r11,r12,
- ;; r13,mof,srp
- ;;
- ;; This function looks on the _surface_ like spaghetti programming, but it's
- ;; really designed so that the fast-path does not force cache-loading of
- ;; non-used instructions. Only the non-common cases cause the outlined code
- ;; to run..
-
- .type system_call,@function
-system_call:
- ;; Stack-frame similar to the irq heads, which is reversed in
- ;; ret_from_sys_call.
-
- sub.d 92, $sp ; Skip EDA.
- movem $r13, [$sp]
- move.d $sp, $r8
- addq 14*4, $r8
- move.d $acr, $r0
- move $srs, $r1
- move $mof, $r2
- move $spc, $r3
- move $ccs, $r4
- move $srp, $r5
- move $erp, $r6
- move.d $r9, $r7 ; Store syscall number in EXS
- subq 4, $sp
- movem $r7, [$r8]
- ei ; Enable interrupts while processing syscalls.
- move.d $r10, [$sp]
-
- ; Set S-bit when kernel debugging to keep hardware breakpoints active.
-#ifdef CONFIG_ETRAX_KGDB
- move $ccs, $r0
- or.d (1<<9), $r0
- move $r0, $ccs
-#endif
-
- movs.w -ENOSYS, $r0
- addoq +PT_r10, $sp, $acr
- move.d $r0, [$acr]
-
- ;; Check if this process is syscall-traced.
- movs.w -8192, $r0 ; THREAD_SIZE == 8192
- and.d $sp, $r0
-
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r0
- btstq TIF_SYSCALL_TRACE, $r0
- bmi _syscall_trace_entry
- nop
-
-_syscall_traced:
- ;; Check for sanity in the requested syscall number.
- cmpu.w NR_syscalls, $r9
- bhs ret_from_sys_call
- lslq 2, $r9 ; Multiply by 4, in the delay slot.
-
- ;; The location on the stack for the register structure is passed as a
- ;; seventh argument. Some system calls need this.
- move.d $sp, $r0
- subq 4, $sp
- move.d $r0, [$sp]
-
- ;; The registers carrying parameters (R10-R13) are intact. The optional
- ;; fifth and sixth parameters is in MOF and SRP respectively. Put them
- ;; back on the stack.
- subq 4, $sp
- move $srp, [$sp]
- subq 4, $sp
- move $mof, [$sp]
-
- ;; Actually to the system call.
- addo.d +sys_call_table, $r9, $acr
- move.d [$acr], $acr
- jsr $acr
- nop
-
- addq 3*4, $sp ; Pop the mof, srp and regs parameters.
- addoq +PT_r10, $sp, $acr
- move.d $r10, [$acr] ; Save the return value.
-
- moveq 1, $r9 ; "Parameter" to ret_from_sys_call to
- ; show it was a sys call.
-
- ;; Fall through into ret_from_sys_call to return.
-
-ret_from_sys_call:
- ;; R9 is a parameter:
- ;; >= 1 from syscall
- ;; 0 from irq
-
- ;; Get the current task-struct pointer.
- movs.w -8192, $r0 ; THREAD_SIZE == 8192
- and.d $sp, $r0
-
- di ; Make sure need_resched and sigpending don't change.
-
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r1
- and.d _TIF_ALLWORK_MASK, $r1
- bne _syscall_exit_work
- nop
- .size system_call, . - system_call
-
- .type _Rexit,@function
-_Rexit:
-#if defined(CONFIG_TRACE_IRQFLAGS)
- addoq +PT_ccs, $sp, $acr
- move.d [$acr], $r0
- btstq 15, $r0 ; I1
- bpl 1f
- nop
- jsr trace_hardirqs_on
- nop
-1:
-#endif
-
- ;; This epilogue MUST match the prologues in multiple_interrupt, irq.h
- ;; and ptregs.h.
- addq 4, $sp ; Skip orig_r10.
- movem [$sp+], $r13 ; Registers R0-R13.
- move.d [$sp+], $acr
- move [$sp], $srs
- addq 4, $sp
- move [$sp+], $mof
- move [$sp+], $spc
- move [$sp+], $ccs
- move [$sp+], $srp
- move [$sp+], $erp
- addq 8, $sp ; Skip EXS, EDA.
- jump $erp
- rfe ; Restore condition code stack in delay-slot.
- .size _Rexit, . - _Rexit
-
- ;; We get here after doing a syscall if extra work might need to be done
- ;; perform syscall exit tracing if needed.
-
- .type _syscall_exit_work,@function
-_syscall_exit_work:
- ;; R0 contains current at this point and irq's are disabled.
-
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r1
- btstq TIF_SYSCALL_TRACE, $r1
- bpl _work_pending
- nop
- ei
- move.d $r9, $r1 ; Preserve R9.
- jsr do_syscall_trace
- nop
- move.d $r1, $r9
- ba _resume_userspace
- nop
- .size _syscall_exit_work, . - _syscall_exit_work
-
- .type _work_pending,@function
-_work_pending:
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r12 ; The thread_info_flags parameter.
- move.d $sp, $r11 ; The regs param.
- jsr do_work_pending
- move.d $r9, $r10 ; The syscall/irq param.
-
- ba _Rexit
- nop
- .size _work_pending, . - _work_pending
-
- ;; We get here as a sidetrack when we've entered a syscall with the
- ;; trace-bit set. We need to call do_syscall_trace and then continue
- ;; with the call.
-
-_syscall_trace_entry:
- ;; PT_r10 in the frame contains -ENOSYS as required, at this point.
-
- jsr do_syscall_trace
- nop
-
- ;; Now re-enter the syscall code to do the syscall itself. We need to
- ;; restore R9 here to contain the wanted syscall, and the other
- ;; parameter-bearing registers.
- addoq +PT_r9, $sp, $acr
- move.d [$acr], $r9
- addoq +PT_orig_r10, $sp, $acr
- move.d [$acr], $r10 ; PT_r10 is already -ENOSYS.
- addoq +PT_r11, $sp, $acr
- move.d [$acr], $r11
- addoq +PT_r12, $sp, $acr
- move.d [$acr], $r12
- addoq +PT_r13, $sp, $acr
- move.d [$acr], $r13
- addoq +PT_mof, $sp, $acr
- move [$acr], $mof
- addoq +PT_srp, $sp, $acr
- move [$acr], $srp
-
- ba _syscall_traced
- nop
-
- ;; Resume performs the actual task-switching, by switching stack
- ;; pointers. Input arguments are:
- ;;
- ;; R10 = prev
- ;; R11 = next
- ;; R12 = thread offset in task struct.
- ;;
- ;; Returns old current in R10.
-
- .type resume,@function
-resume:
- subq 4, $sp ; Make space for srp.
-
- add.d $r12, $r10 ; R10 = current tasks tss.
- addoq +THREAD_ccs, $r10, $acr
- move $srp, [$sp] ; Keep old/new PC on the stack.
- move $ccs, [$acr] ; Save IRQ enable state.
- di
-
- addoq +THREAD_usp, $r10, $acr
- subq 10*4, $sp ; Make room for R9.
- move $usp, [$acr] ; Save user-mode stackpointer.
-
- ;; See copy_thread for the reason why register R9 is saved.
- movem $r9, [$sp] ; Save non-scratch registers and R9.
-
- addoq +THREAD_ksp, $r10, $acr
- move.d $sp, $r10 ; Return last running task in R10.
- move.d $sp, [$acr] ; Save kernel SP for old task.
-
- and.d -8192, $r10 ; Get thread_info from stackpointer.
- addoq +TI_task, $r10, $acr
- add.d $r12, $r11 ; Find the new tasks tss.
- move.d [$acr], $r10 ; Get task.
- addoq +THREAD_ksp, $r11, $acr
- move.d [$acr], $sp ; Switch to new stackframe.
- addoq +THREAD_usp, $r11, $acr
- movem [$sp+], $r9 ; Restore non-scratch registers and R9.
-
- move [$acr], $usp ; Restore user-mode stackpointer.
-
- addoq +THREAD_ccs, $r11, $acr
- move.d [$sp+], $r11
- jump $r11 ; Restore PC.
- move [$acr], $ccs ; Restore IRQ enable status.
- .size resume, . - resume
-
-nmi_interrupt:
-
-;; If we receive a watchdog interrupt while it is not expected, then set
-;; up a canonical frame and dump register contents before dying.
-
- ;; This prologue MUST match the one in irq.h and the struct in ptregs.h!
- subq 12, $sp ; Skip EXS, EDA.
- move $nrp, [$sp]
- subq 4, $sp
- move $srp, [$sp]
- subq 4, $sp
- move $ccs, [$sp]
- subq 4, $sp
- move $spc, [$sp]
- subq 4, $sp
- move $mof, [$sp]
- subq 4, $sp
- move $srs, [$sp]
- subq 4, $sp
- move.d $acr, [$sp]
- subq 14*4, $sp ; Make room for R0-R13.
- movem $r13, [$sp] ; Push R0-R13.
- subq 4, $sp
- move.d $r10, [$sp] ; Push orig_r10.
- move.d REG_ADDR(intr_vect, regi_irq, r_nmi), $r0
- move.d [$r0], $r0
- btstq REG_BIT(intr_vect, r_nmi, watchdog), $r0
- bpl 1f
- nop
- jsr handle_watchdog_bite ; In time.c.
- move.d $sp, $r10 ; Pointer to registers
-1: btstq REG_BIT(intr_vect, r_nmi, ext), $r0
- bpl 1f
- nop
- jsr handle_nmi
- move.d $sp, $r10 ; Pointer to registers
-1: addq 4, $sp ; Skip orig_r10
- movem [$sp+], $r13
- move.d [$sp+], $acr
- move [$sp], $srs
- addq 4, $sp
- move [$sp+], $mof
- move [$sp+], $spc
- move [$sp+], $ccs
- move [$sp+], $srp
- move [$sp+], $nrp
- addq 8, $sp ; Skip EXS, EDA.
- jump $nrp
- rfn
-
- .comm cause_of_death, 4 ;; Don't declare this anywhere.
-
-spurious_interrupt:
- di
- jump hard_reset_now
- nop
-
- ;; This handles the case when multiple interrupts arrive at the same
- ;; time. Jump to the first set interrupt bit in a priority fashion. The
- ;; hardware will call the unserved interrupts after the handler
- ;; finishes.
- .type multiple_interrupt, @function
-multiple_interrupt:
- ;; This prologue MUST match the one in irq.h and the struct in ptregs.h!
- subq 12, $sp ; Skip EXS, EDA.
- move $erp, [$sp]
- subq 4, $sp
- move $srp, [$sp]
- subq 4, $sp
- move $ccs, [$sp]
- subq 4, $sp
- move $spc, [$sp]
- subq 4, $sp
- move $mof, [$sp]
- subq 4, $sp
- move $srs, [$sp]
- subq 4, $sp
- move.d $acr, [$sp]
- subq 14*4, $sp ; Make room for R0-R13.
- movem $r13, [$sp] ; Push R0-R13.
- subq 4, $sp
- move.d $r10, [$sp] ; Push orig_r10.
-
-; Set S-bit when kernel debugging to keep hardware breakpoints active.
-#ifdef CONFIG_ETRAX_KGDB
- move $ccs, $r0
- or.d (1<<9), $r0
- move $r0, $ccs
-#endif
-
- jsr crisv32_do_multiple
- move.d $sp, $r10
- jump ret_from_intr
- nop
- .size multiple_interrupt, . - multiple_interrupt
-
-do_sigtrap:
- ;; Sigtraps the process that executed the BREAK instruction. Creates a
- ;; frame that Rexit expects.
- subq 4, $sp
- move $eda, [$sp]
- subq 4, $sp
- move $exs, [$sp]
- subq 4, $sp
- move $erp, [$sp]
- subq 4, $sp
- move $srp, [$sp]
- subq 4, $sp
- move $ccs, [$sp]
- subq 4, $sp
- move $spc, [$sp]
- subq 4, $sp
- move $mof, [$sp]
- subq 4, $sp
- move $srs, [$sp]
- subq 4, $sp
- move.d $acr, [$sp]
- di ; Need to disable irq's at this point.
- subq 14*4, $sp ; Make room for r0-r13.
- movem $r13, [$sp] ; Push the r0-r13 registers.
- subq 4, $sp
- move.d $r10, [$sp] ; Push orig_r10.
-
- movs.w -8192, $r9 ; THREAD_SIZE == 8192
- and.d $sp, $r9
-
- ;; thread_info as first parameter
- move.d $r9, $r10
- moveq 5, $r11 ; SIGTRAP as second argument.
- jsr ugdb_trap_user
- nop
- jump ret_from_intr ; Use the return routine for interrupts.
- nop
-
-gdb_handle_exception:
- subq 4, $sp
- move.d $r0, [$sp]
-#ifdef CONFIG_ETRAX_KGDB
- move $ccs, $r0 ; U-flag not affected by previous insns.
- btstq 16, $r0 ; Test the U-flag.
- bmi _ugdb_handle_exception ; Go to user mode debugging.
- nop ; Empty delay-slot (cannot pop R0 here).
- ba kgdb_handle_exception ; Go to kernel debugging.
- move.d [$sp+], $r0 ; Restore R0 in delay slot.
-#endif
-
-_ugdb_handle_exception:
- ba do_sigtrap ; SIGTRAP the offending process.
- move.d [$sp+], $r0 ; Restore R0 in delay slot.
-
- .data
-
- .section .rodata,"a"
-sys_call_table:
- .long sys_restart_syscall ; 0 - old "setup()" system call, used
- ; for restarting.
- .long sys_exit
- .long sys_fork
- .long sys_read
- .long sys_write
- .long sys_open /* 5 */
- .long sys_close
- .long sys_waitpid
- .long sys_creat
- .long sys_link
- .long sys_unlink /* 10 */
- .long sys_execve
- .long sys_chdir
- .long sys_time
- .long sys_mknod
- .long sys_chmod /* 15 */
- .long sys_lchown16
- .long sys_ni_syscall /* old break syscall holder */
- .long sys_stat
- .long sys_lseek
- .long sys_getpid /* 20 */
- .long sys_mount
- .long sys_oldumount
- .long sys_setuid16
- .long sys_getuid16
- .long sys_stime /* 25 */
- .long sys_ptrace
- .long sys_alarm
- .long sys_fstat
- .long sys_pause
- .long sys_utime /* 30 */
- .long sys_ni_syscall /* old stty syscall holder */
- .long sys_ni_syscall /* old gtty syscall holder */
- .long sys_access
- .long sys_nice
- .long sys_ni_syscall /* 35 old ftime syscall holder */
- .long sys_sync
- .long sys_kill
- .long sys_rename
- .long sys_mkdir
- .long sys_rmdir /* 40 */
- .long sys_dup
- .long sys_pipe
- .long sys_times
- .long sys_ni_syscall /* old prof syscall holder */
- .long sys_brk /* 45 */
- .long sys_setgid16
- .long sys_getgid16
- .long sys_signal
- .long sys_geteuid16
- .long sys_getegid16 /* 50 */
- .long sys_acct
- .long sys_umount /* recycled never used phys( */
- .long sys_ni_syscall /* old lock syscall holder */
- .long sys_ioctl
- .long sys_fcntl /* 55 */
- .long sys_ni_syscall /* old mpx syscall holder */
- .long sys_setpgid
- .long sys_ni_syscall /* old ulimit syscall holder */
- .long sys_ni_syscall /* old sys_olduname holder */
- .long sys_umask /* 60 */
- .long sys_chroot
- .long sys_ustat
- .long sys_dup2
- .long sys_getppid
- .long sys_getpgrp /* 65 */
- .long sys_setsid
- .long sys_sigaction
- .long sys_sgetmask
- .long sys_ssetmask
- .long sys_setreuid16 /* 70 */
- .long sys_setregid16
- .long sys_sigsuspend
- .long sys_sigpending
- .long sys_sethostname
- .long sys_setrlimit /* 75 */
- .long sys_old_getrlimit
- .long sys_getrusage
- .long sys_gettimeofday
- .long sys_settimeofday
- .long sys_getgroups16 /* 80 */
- .long sys_setgroups16
- .long sys_select /* was old_select in Linux/E100 */
- .long sys_symlink
- .long sys_lstat
- .long sys_readlink /* 85 */
- .long sys_uselib
- .long sys_swapon
- .long sys_reboot
- .long sys_old_readdir
- .long sys_old_mmap /* 90 */
- .long sys_munmap
- .long sys_truncate
- .long sys_ftruncate
- .long sys_fchmod
- .long sys_fchown16 /* 95 */
- .long sys_getpriority
- .long sys_setpriority
- .long sys_ni_syscall /* old profil syscall holder */
- .long sys_statfs
- .long sys_fstatfs /* 100 */
- .long sys_ni_syscall /* sys_ioperm in i386 */
- .long sys_socketcall
- .long sys_syslog
- .long sys_setitimer
- .long sys_getitimer /* 105 */
- .long sys_newstat
- .long sys_newlstat
- .long sys_newfstat
- .long sys_ni_syscall /* old sys_uname holder */
- .long sys_ni_syscall /* sys_iopl in i386 */
- .long sys_vhangup
- .long sys_ni_syscall /* old "idle" system call */
- .long sys_ni_syscall /* vm86old in i386 */
- .long sys_wait4
- .long sys_swapoff /* 115 */
- .long sys_sysinfo
- .long sys_ipc
- .long sys_fsync
- .long sys_sigreturn
- .long sys_clone /* 120 */
- .long sys_setdomainname
- .long sys_newuname
- .long sys_ni_syscall /* sys_modify_ldt */
- .long sys_adjtimex
- .long sys_mprotect /* 125 */
- .long sys_sigprocmask
- .long sys_ni_syscall /* old "create_module" */
- .long sys_init_module
- .long sys_delete_module
- .long sys_ni_syscall /* 130: old "get_kernel_syms" */
- .long sys_quotactl
- .long sys_getpgid
- .long sys_fchdir
- .long sys_bdflush
- .long sys_sysfs /* 135 */
- .long sys_personality
- .long sys_ni_syscall /* for afs_syscall */
- .long sys_setfsuid16
- .long sys_setfsgid16
- .long sys_llseek /* 140 */
- .long sys_getdents
- .long sys_select
- .long sys_flock
- .long sys_msync
- .long sys_readv /* 145 */
- .long sys_writev
- .long sys_getsid
- .long sys_fdatasync
- .long sys_sysctl
- .long sys_mlock /* 150 */
- .long sys_munlock
- .long sys_mlockall
- .long sys_munlockall
- .long sys_sched_setparam
- .long sys_sched_getparam /* 155 */
- .long sys_sched_setscheduler
- .long sys_sched_getscheduler
- .long sys_sched_yield
- .long sys_sched_get_priority_max
- .long sys_sched_get_priority_min /* 160 */
- .long sys_sched_rr_get_interval
- .long sys_nanosleep
- .long sys_mremap
- .long sys_setresuid16
- .long sys_getresuid16 /* 165 */
- .long sys_ni_syscall /* sys_vm86 */
- .long sys_ni_syscall /* Old sys_query_module */
- .long sys_poll
- .long sys_ni_syscall /* Old nfsservctl */
- .long sys_setresgid16 /* 170 */
- .long sys_getresgid16
- .long sys_prctl
- .long sys_rt_sigreturn
- .long sys_rt_sigaction
- .long sys_rt_sigprocmask /* 175 */
- .long sys_rt_sigpending
- .long sys_rt_sigtimedwait
- .long sys_rt_sigqueueinfo
- .long sys_rt_sigsuspend
- .long sys_pread64 /* 180 */
- .long sys_pwrite64
- .long sys_chown16
- .long sys_getcwd
- .long sys_capget
- .long sys_capset /* 185 */
- .long sys_sigaltstack
- .long sys_sendfile
- .long sys_ni_syscall /* streams1 */
- .long sys_ni_syscall /* streams2 */
- .long sys_vfork /* 190 */
- .long sys_getrlimit
- .long sys_mmap2
- .long sys_truncate64
- .long sys_ftruncate64
- .long sys_stat64 /* 195 */
- .long sys_lstat64
- .long sys_fstat64
- .long sys_lchown
- .long sys_getuid
- .long sys_getgid /* 200 */
- .long sys_geteuid
- .long sys_getegid
- .long sys_setreuid
- .long sys_setregid
- .long sys_getgroups /* 205 */
- .long sys_setgroups
- .long sys_fchown
- .long sys_setresuid
- .long sys_getresuid
- .long sys_setresgid /* 210 */
- .long sys_getresgid
- .long sys_chown
- .long sys_setuid
- .long sys_setgid
- .long sys_setfsuid /* 215 */
- .long sys_setfsgid
- .long sys_pivot_root
- .long sys_mincore
- .long sys_madvise
- .long sys_getdents64 /* 220 */
- .long sys_fcntl64
- .long sys_ni_syscall /* reserved for TUX */
- .long sys_ni_syscall
- .long sys_gettid
- .long sys_readahead /* 225 */
- .long sys_setxattr
- .long sys_lsetxattr
- .long sys_fsetxattr
- .long sys_getxattr
- .long sys_lgetxattr /* 230 */
- .long sys_fgetxattr
- .long sys_listxattr
- .long sys_llistxattr
- .long sys_flistxattr
- .long sys_removexattr /* 235 */
- .long sys_lremovexattr
- .long sys_fremovexattr
- .long sys_tkill
- .long sys_sendfile64
- .long sys_futex /* 240 */
- .long sys_sched_setaffinity
- .long sys_sched_getaffinity
- .long sys_ni_syscall /* sys_set_thread_area */
- .long sys_ni_syscall /* sys_get_thread_area */
- .long sys_io_setup /* 245 */
- .long sys_io_destroy
- .long sys_io_getevents
- .long sys_io_submit
- .long sys_io_cancel
- .long sys_fadvise64 /* 250 */
- .long sys_ni_syscall
- .long sys_exit_group
- .long sys_lookup_dcookie
- .long sys_epoll_create
- .long sys_epoll_ctl /* 255 */
- .long sys_epoll_wait
- .long sys_remap_file_pages
- .long sys_set_tid_address
- .long sys_timer_create
- .long sys_timer_settime /* 260 */
- .long sys_timer_gettime
- .long sys_timer_getoverrun
- .long sys_timer_delete
- .long sys_clock_settime
- .long sys_clock_gettime /* 265 */
- .long sys_clock_getres
- .long sys_clock_nanosleep
- .long sys_statfs64
- .long sys_fstatfs64
- .long sys_tgkill /* 270 */
- .long sys_utimes
- .long sys_fadvise64_64
- .long sys_ni_syscall /* sys_vserver */
- .long sys_ni_syscall /* sys_mbind */
- .long sys_ni_syscall /* 275 sys_get_mempolicy */
- .long sys_ni_syscall /* sys_set_mempolicy */
- .long sys_mq_open
- .long sys_mq_unlink
- .long sys_mq_timedsend
- .long sys_mq_timedreceive /* 280 */
- .long sys_mq_notify
- .long sys_mq_getsetattr
- .long sys_ni_syscall /* reserved for kexec */
- .long sys_waitid
- .long sys_ni_syscall /* 285 */ /* available */
- .long sys_add_key
- .long sys_request_key
- .long sys_keyctl
- .long sys_ioprio_set
- .long sys_ioprio_get /* 290 */
- .long sys_inotify_init
- .long sys_inotify_add_watch
- .long sys_inotify_rm_watch
- .long sys_migrate_pages
- .long sys_openat /* 295 */
- .long sys_mkdirat
- .long sys_mknodat
- .long sys_fchownat
- .long sys_futimesat
- .long sys_fstatat64 /* 300 */
- .long sys_unlinkat
- .long sys_renameat
- .long sys_linkat
- .long sys_symlinkat
- .long sys_readlinkat /* 305 */
- .long sys_fchmodat
- .long sys_faccessat
- .long sys_pselect6
- .long sys_ppoll
- .long sys_unshare /* 310 */
- .long sys_set_robust_list
- .long sys_get_robust_list
- .long sys_splice
- .long sys_sync_file_range
- .long sys_tee /* 315 */
- .long sys_vmsplice
- .long sys_move_pages
- .long sys_getcpu
- .long sys_epoll_pwait
- .long sys_utimensat /* 320 */
- .long sys_signalfd
- .long sys_timerfd_create
- .long sys_eventfd
- .long sys_fallocate
- .long sys_timerfd_settime /* 325 */
- .long sys_timerfd_gettime
- .long sys_signalfd4
- .long sys_eventfd2
- .long sys_epoll_create1
- .long sys_dup3 /* 330 */
- .long sys_pipe2
- .long sys_inotify_init1
- .long sys_preadv
- .long sys_pwritev
- .long sys_setns /* 335 */
- .long sys_name_to_handle_at
- .long sys_open_by_handle_at
- .long sys_rt_tgsigqueueinfo
- .long sys_perf_event_open
- .long sys_recvmmsg /* 340 */
- .long sys_accept4
- .long sys_fanotify_init
- .long sys_fanotify_mark
- .long sys_prlimit64
- .long sys_clock_adjtime /* 345 */
- .long sys_syncfs
- .long sys_sendmmsg
- .long sys_process_vm_readv
- .long sys_process_vm_writev
- .long sys_kcmp /* 350 */
- .long sys_finit_module
- .long sys_sched_setattr
- .long sys_sched_getattr
- .long sys_renameat2
- .long sys_seccomp /* 355 */
- .long sys_getrandom
- .long sys_memfd_create
- .long sys_bpf
- .long sys_execveat
-
- /*
- * NOTE!! This doesn't have to be exact - we just have
- * to make sure we have _enough_ of the "sys_ni_syscall"
- * entries. Don't panic if you notice that this hasn't
- * been shrunk every time we add a new system call.
- */
-
- .rept NR_syscalls - (.-sys_call_table) / 4
- .long sys_ni_syscall
- .endr
-
diff --git a/arch/cris/arch-v32/kernel/fasttimer.c b/arch/cris/arch-v32/kernel/fasttimer.c
deleted file mode 100644
index 7452c70f61ff..000000000000
--- a/arch/cris/arch-v32/kernel/fasttimer.c
+++ /dev/null
@@ -1,793 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/cris/kernel/fasttimer.c
- *
- * Fast timers for ETRAX FS
- *
- * Copyright (C) 2000-2006 Axis Communications AB, Lund, Sweden
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/vmalloc.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-
-#include <asm/irq.h>
-
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/timer_defs.h>
-#include <asm/fasttimer.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-
-/*
- * timer0 is running at 100MHz and generating jiffies timer ticks
- * at 100 or 1000 HZ.
- * fasttimer gives an API that gives timers that expire "between" the jiffies
- * giving microsecond resolution (10 ns).
- * fasttimer uses reg_timer_rw_trig register to get interrupt when
- * r_time reaches a certain value.
- */
-
-
-#define DEBUG_LOG_INCLUDED
-#define FAST_TIMER_LOG
-/* #define FAST_TIMER_TEST */
-
-#define FAST_TIMER_SANITY_CHECKS
-
-#ifdef FAST_TIMER_SANITY_CHECKS
-static int sanity_failed;
-#endif
-
-#define D1(x)
-#define D2(x)
-#define DP(x)
-
-static unsigned int fast_timer_running;
-static unsigned int fast_timers_added;
-static unsigned int fast_timers_started;
-static unsigned int fast_timers_expired;
-static unsigned int fast_timers_deleted;
-static unsigned int fast_timer_is_init;
-static unsigned int fast_timer_ints;
-
-struct fast_timer *fast_timer_list = NULL;
-
-#ifdef DEBUG_LOG_INCLUDED
-#define DEBUG_LOG_MAX 128
-static const char * debug_log_string[DEBUG_LOG_MAX];
-static unsigned long debug_log_value[DEBUG_LOG_MAX];
-static unsigned int debug_log_cnt;
-static unsigned int debug_log_cnt_wrapped;
-
-#define DEBUG_LOG(string, value) \
-{ \
- unsigned long log_flags; \
- local_irq_save(log_flags); \
- debug_log_string[debug_log_cnt] = (string); \
- debug_log_value[debug_log_cnt] = (unsigned long)(value); \
- if (++debug_log_cnt >= DEBUG_LOG_MAX) \
- { \
- debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \
- debug_log_cnt_wrapped = 1; \
- } \
- local_irq_restore(log_flags); \
-}
-#else
-#define DEBUG_LOG(string, value)
-#endif
-
-
-#define NUM_TIMER_STATS 16
-#ifdef FAST_TIMER_LOG
-struct fast_timer timer_added_log[NUM_TIMER_STATS];
-struct fast_timer timer_started_log[NUM_TIMER_STATS];
-struct fast_timer timer_expired_log[NUM_TIMER_STATS];
-#endif
-
-int timer_div_settings[NUM_TIMER_STATS];
-int timer_delay_settings[NUM_TIMER_STATS];
-
-struct work_struct fast_work;
-
-static void
-timer_trig_handler(struct work_struct *work);
-
-
-
-/* Not true gettimeofday, only checks the jiffies (uptime) + useconds */
-inline void do_gettimeofday_fast(struct fasttime_t *tv)
-{
- tv->tv_jiff = jiffies;
- tv->tv_usec = GET_JIFFIES_USEC();
-}
-
-inline int fasttime_cmp(struct fasttime_t *t0, struct fasttime_t *t1)
-{
- /* Compare jiffies. Takes care of wrapping */
- if (time_before(t0->tv_jiff, t1->tv_jiff))
- return -1;
- else if (time_after(t0->tv_jiff, t1->tv_jiff))
- return 1;
-
- /* Compare us */
- if (t0->tv_usec < t1->tv_usec)
- return -1;
- else if (t0->tv_usec > t1->tv_usec)
- return 1;
- return 0;
-}
-
-/* Called with ints off */
-inline void start_timer_trig(unsigned long delay_us)
-{
- reg_timer_rw_ack_intr ack_intr = { 0 };
- reg_timer_rw_intr_mask intr_mask;
- reg_timer_rw_trig trig;
- reg_timer_rw_trig_cfg trig_cfg = { 0 };
- reg_timer_r_time r_time0;
- reg_timer_r_time r_time1;
- unsigned char trig_wrap;
- unsigned char time_wrap;
-
- r_time0 = REG_RD(timer, regi_timer0, r_time);
-
- D1(printk("start_timer_trig : %d us freq: %i div: %i\n",
- delay_us, freq_index, div));
- /* Clear trig irq */
- intr_mask = REG_RD(timer, regi_timer0, rw_intr_mask);
- intr_mask.trig = 0;
- REG_WR(timer, regi_timer0, rw_intr_mask, intr_mask);
-
- /* Set timer values and check if trigger wraps. */
- /* r_time is 100MHz (10 ns resolution) */
- trig_wrap = (trig = r_time0 + delay_us*(1000/10)) < r_time0;
-
- timer_div_settings[fast_timers_started % NUM_TIMER_STATS] = trig;
- timer_delay_settings[fast_timers_started % NUM_TIMER_STATS] = delay_us;
-
- /* Ack interrupt */
- ack_intr.trig = 1;
- REG_WR(timer, regi_timer0, rw_ack_intr, ack_intr);
-
- /* Start timer */
- REG_WR(timer, regi_timer0, rw_trig, trig);
- trig_cfg.tmr = regk_timer_time;
- REG_WR(timer, regi_timer0, rw_trig_cfg, trig_cfg);
-
- /* Check if we have already passed the trig time */
- r_time1 = REG_RD(timer, regi_timer0, r_time);
- time_wrap = r_time1 < r_time0;
-
- if ((trig_wrap && !time_wrap) || (r_time1 < trig)) {
- /* No, Enable trig irq */
- intr_mask = REG_RD(timer, regi_timer0, rw_intr_mask);
- intr_mask.trig = 1;
- REG_WR(timer, regi_timer0, rw_intr_mask, intr_mask);
- fast_timers_started++;
- fast_timer_running = 1;
- } else {
- /* We have passed the time, disable trig point, ack intr */
- trig_cfg.tmr = regk_timer_off;
- REG_WR(timer, regi_timer0, rw_trig_cfg, trig_cfg);
- REG_WR(timer, regi_timer0, rw_ack_intr, ack_intr);
- /* call the int routine */
- INIT_WORK(&fast_work, timer_trig_handler);
- schedule_work(&fast_work);
- }
-
-}
-
-/* In version 1.4 this function takes 27 - 50 us */
-void start_one_shot_timer(struct fast_timer *t,
- fast_timer_function_type *function,
- unsigned long data,
- unsigned long delay_us,
- const char *name)
-{
- unsigned long flags;
- struct fast_timer *tmp;
-
- D1(printk("sft %s %d us\n", name, delay_us));
-
- local_irq_save(flags);
-
- do_gettimeofday_fast(&t->tv_set);
- tmp = fast_timer_list;
-
-#ifdef FAST_TIMER_SANITY_CHECKS
- /* Check so this is not in the list already... */
- while (tmp != NULL) {
- if (tmp == t) {
- printk(KERN_DEBUG
- "timer name: %s data: 0x%08lX already "
- "in list!\n", name, data);
- sanity_failed++;
- goto done;
- } else
- tmp = tmp->next;
- }
- tmp = fast_timer_list;
-#endif
-
- t->delay_us = delay_us;
- t->function = function;
- t->data = data;
- t->name = name;
-
- t->tv_expires.tv_usec = t->tv_set.tv_usec + delay_us % 1000000;
- t->tv_expires.tv_jiff = t->tv_set.tv_jiff + delay_us / 1000000 / HZ;
- if (t->tv_expires.tv_usec > 1000000) {
- t->tv_expires.tv_usec -= 1000000;
- t->tv_expires.tv_jiff += HZ;
- }
-#ifdef FAST_TIMER_LOG
- timer_added_log[fast_timers_added % NUM_TIMER_STATS] = *t;
-#endif
- fast_timers_added++;
-
- /* Check if this should timeout before anything else */
- if (tmp == NULL || fasttime_cmp(&t->tv_expires, &tmp->tv_expires) < 0) {
- /* Put first in list and modify the timer value */
- t->prev = NULL;
- t->next = fast_timer_list;
- if (fast_timer_list)
- fast_timer_list->prev = t;
- fast_timer_list = t;
-#ifdef FAST_TIMER_LOG
- timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
-#endif
- start_timer_trig(delay_us);
- } else {
- /* Put in correct place in list */
- while (tmp->next &&
- fasttime_cmp(&t->tv_expires, &tmp->next->tv_expires) > 0)
- tmp = tmp->next;
- /* Insert t after tmp */
- t->prev = tmp;
- t->next = tmp->next;
- if (tmp->next)
- {
- tmp->next->prev = t;
- }
- tmp->next = t;
- }
-
- D2(printk("start_one_shot_timer: %d us done\n", delay_us));
-
-done:
- local_irq_restore(flags);
-} /* start_one_shot_timer */
-
-static inline int fast_timer_pending (const struct fast_timer * t)
-{
- return (t->next != NULL) || (t->prev != NULL) || (t == fast_timer_list);
-}
-
-static inline int detach_fast_timer (struct fast_timer *t)
-{
- struct fast_timer *next, *prev;
- if (!fast_timer_pending(t))
- return 0;
- next = t->next;
- prev = t->prev;
- if (next)
- next->prev = prev;
- if (prev)
- prev->next = next;
- else
- fast_timer_list = next;
- fast_timers_deleted++;
- return 1;
-}
-
-int del_fast_timer(struct fast_timer * t)
-{
- unsigned long flags;
- int ret;
-
- local_irq_save(flags);
- ret = detach_fast_timer(t);
- t->next = t->prev = NULL;
- local_irq_restore(flags);
- return ret;
-} /* del_fast_timer */
-
-
-/* Interrupt routines or functions called in interrupt context */
-
-/* Timer interrupt handler for trig interrupts */
-
-static irqreturn_t
-timer_trig_interrupt(int irq, void *dev_id)
-{
- reg_timer_r_masked_intr masked_intr;
- /* Check if the timer interrupt is for us (a trig int) */
- masked_intr = REG_RD(timer, regi_timer0, r_masked_intr);
- if (!masked_intr.trig)
- return IRQ_NONE;
- timer_trig_handler(NULL);
- return IRQ_HANDLED;
-}
-
-static void timer_trig_handler(struct work_struct *work)
-{
- reg_timer_rw_ack_intr ack_intr = { 0 };
- reg_timer_rw_intr_mask intr_mask;
- reg_timer_rw_trig_cfg trig_cfg = { 0 };
- struct fast_timer *t;
- fast_timer_function_type *f;
- unsigned long d;
- unsigned long flags;
-
- /* We keep interrupts disabled not only when we modify the
- * fast timer list, but any time we hold a reference to a
- * timer in the list, since del_fast_timer may be called
- * from (another) interrupt context. Thus, the only time
- * when interrupts are enabled is when calling the timer
- * callback function.
- */
- local_irq_save(flags);
-
- /* Clear timer trig interrupt */
- intr_mask = REG_RD(timer, regi_timer0, rw_intr_mask);
- intr_mask.trig = 0;
- REG_WR(timer, regi_timer0, rw_intr_mask, intr_mask);
-
- /* First stop timer, then ack interrupt */
- /* Stop timer */
- trig_cfg.tmr = regk_timer_off;
- REG_WR(timer, regi_timer0, rw_trig_cfg, trig_cfg);
-
- /* Ack interrupt */
- ack_intr.trig = 1;
- REG_WR(timer, regi_timer0, rw_ack_intr, ack_intr);
-
- fast_timer_running = 0;
- fast_timer_ints++;
-
- t = fast_timer_list;
- while (t) {
- struct fasttime_t tv;
-
- /* Has it really expired? */
- do_gettimeofday_fast(&tv);
- D1(printk(KERN_DEBUG
- "t: %is %06ius\n", tv.tv_jiff, tv.tv_usec));
-
- if (fasttime_cmp(&t->tv_expires, &tv) <= 0) {
- /* Yes it has expired */
-#ifdef FAST_TIMER_LOG
- timer_expired_log[fast_timers_expired % NUM_TIMER_STATS] = *t;
-#endif
- fast_timers_expired++;
-
- /* Remove this timer before call, since it may reuse the timer */
- if (t->prev)
- t->prev->next = t->next;
- else
- fast_timer_list = t->next;
- if (t->next)
- t->next->prev = t->prev;
- t->prev = NULL;
- t->next = NULL;
-
- /* Save function callback data before enabling
- * interrupts, since the timer may be removed and we
- * don't know how it was allocated (e.g. ->function
- * and ->data may become overwritten after deletion
- * if the timer was stack-allocated).
- */
- f = t->function;
- d = t->data;
-
- if (f != NULL) {
- /* Run the callback function with interrupts
- * enabled. */
- local_irq_restore(flags);
- f(d);
- local_irq_save(flags);
- } else
- DEBUG_LOG("!trimertrig %i function==NULL!\n", fast_timer_ints);
- } else {
- /* Timer is to early, let's set it again using the normal routines */
- D1(printk(".\n"));
- }
-
- t = fast_timer_list;
- if (t != NULL) {
- /* Start next timer.. */
- long us = 0;
- struct fasttime_t tv;
-
- do_gettimeofday_fast(&tv);
-
- /* time_after_eq takes care of wrapping */
- if (time_after_eq(t->tv_expires.tv_jiff, tv.tv_jiff))
- us = ((t->tv_expires.tv_jiff - tv.tv_jiff) *
- 1000000 / HZ + t->tv_expires.tv_usec -
- tv.tv_usec);
-
- if (us > 0) {
- if (!fast_timer_running) {
-#ifdef FAST_TIMER_LOG
- timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
-#endif
- start_timer_trig(us);
- }
- break;
- } else {
- /* Timer already expired, let's handle it better late than never.
- * The normal loop handles it
- */
- D1(printk("e! %d\n", us));
- }
- }
- }
-
- local_irq_restore(flags);
-
- if (!t)
- D1(printk("ttrig stop!\n"));
-}
-
-static void wake_up_func(unsigned long data)
-{
- wait_queue_head_t *sleep_wait_p = (wait_queue_head_t*)data;
- wake_up(sleep_wait_p);
-}
-
-
-/* Useful API */
-
-void schedule_usleep(unsigned long us)
-{
- struct fast_timer t;
- wait_queue_head_t sleep_wait;
- init_waitqueue_head(&sleep_wait);
-
- D1(printk("schedule_usleep(%d)\n", us));
- start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
- "usleep");
- /* Uninterruptible sleep on the fast timer. (The condition is
- * somewhat redundant since the timer is what wakes us up.) */
- wait_event(sleep_wait, !fast_timer_pending(&t));
-
- D1(printk("done schedule_usleep(%d)\n", us));
-}
-
-#ifdef CONFIG_PROC_FS
-/* This value is very much based on testing */
-#define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
-
-static int proc_fasttimer_show(struct seq_file *m, void *v)
-{
- unsigned long flags;
- int i = 0;
- int num_to_show;
- struct fasttime_t tv;
- struct fast_timer *t, *nextt;
-
- do_gettimeofday_fast(&tv);
-
- seq_printf(m, "Fast timers added: %i\n", fast_timers_added);
- seq_printf(m, "Fast timers started: %i\n", fast_timers_started);
- seq_printf(m, "Fast timer interrupts: %i\n", fast_timer_ints);
- seq_printf(m, "Fast timers expired: %i\n", fast_timers_expired);
- seq_printf(m, "Fast timers deleted: %i\n", fast_timers_deleted);
- seq_printf(m, "Fast timer running: %s\n",
- fast_timer_running ? "yes" : "no");
- seq_printf(m, "Current time: %lu.%06lu\n",
- (unsigned long)tv.tv_jiff,
- (unsigned long)tv.tv_usec);
-#ifdef FAST_TIMER_SANITY_CHECKS
- seq_printf(m, "Sanity failed: %i\n", sanity_failed);
-#endif
- seq_putc(m, '\n');
-
-#ifdef DEBUG_LOG_INCLUDED
- {
- int end_i = debug_log_cnt;
- i = 0;
-
- if (debug_log_cnt_wrapped)
- i = debug_log_cnt;
-
- while ((i != end_i || debug_log_cnt_wrapped)) {
- seq_printf(m, debug_log_string[i], debug_log_value[i]);
- if (seq_has_overflowed(m))
- return 0;
- i = (i+1) % DEBUG_LOG_MAX;
- }
- }
- seq_putc(m, '\n');
-#endif
-
- num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
- NUM_TIMER_STATS);
- seq_printf(m, "Timers started: %i\n", fast_timers_started);
- for (i = 0; i < num_to_show; i++) {
- int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
-
-#if 1 //ndef FAST_TIMER_LOG
- seq_printf(m, "div: %i delay: %i\n",
- timer_div_settings[cur],
- timer_delay_settings[cur]);
-#endif
-#ifdef FAST_TIMER_LOG
- t = &timer_started_log[cur];
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
-#endif
- }
- seq_putc(m, '\n');
-
-#ifdef FAST_TIMER_LOG
- num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
- NUM_TIMER_STATS);
- seq_printf(m, "Timers added: %i\n", fast_timers_added);
- for (i = 0; i < num_to_show; i++) {
- t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
- }
- seq_putc(m, '\n');
-
- num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
- NUM_TIMER_STATS);
- seq_printf(m, "Timers expired: %i\n", fast_timers_expired);
- for (i = 0; i < num_to_show; i++){
- t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
- }
- seq_putc(m, '\n');
-#endif
-
- seq_puts(m, "Active timers:\n");
- local_irq_save(flags);
- t = fast_timer_list;
- while (t != NULL){
- nextt = t->next;
- local_irq_restore(flags);
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
- local_irq_save(flags);
- if (t->next != nextt)
- printk("timer removed!\n");
- t = nextt;
- }
- local_irq_restore(flags);
- return 0;
-}
-
-static int proc_fasttimer_open(struct inode *inode, struct file *file)
-{
- return single_open_size(file, proc_fasttimer_show, PDE_DATA(inode), BIG_BUF_SIZE);
-}
-
-static const struct file_operations proc_fasttimer_fops = {
- .open = proc_fasttimer_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-#endif /* PROC_FS */
-
-#ifdef FAST_TIMER_TEST
-static volatile unsigned long i = 0;
-static volatile int num_test_timeout = 0;
-static struct fast_timer tr[10];
-static int exp_num[10];
-
-static struct fasttime_t tv_exp[100];
-
-static void test_timeout(unsigned long data)
-{
- do_gettimeofday_fast(&tv_exp[data]);
- exp_num[data] = num_test_timeout;
-
- num_test_timeout++;
-}
-
-static void test_timeout1(unsigned long data)
-{
- do_gettimeofday_fast(&tv_exp[data]);
- exp_num[data] = num_test_timeout;
- if (data < 7)
- {
- start_one_shot_timer(&tr[i], test_timeout1, i, 1000, "timeout1");
- i++;
- }
- num_test_timeout++;
-}
-
-DP(
-static char buf0[2000];
-static char buf1[2000];
-static char buf2[2000];
-static char buf3[2000];
-static char buf4[2000];
-);
-
-static char buf5[6000];
-static int j_u[1000];
-
-static void fast_timer_test(void)
-{
- int prev_num;
- int j;
-
- struct fasttime_t tv, tv0, tv1, tv2;
-
- printk("fast_timer_test() start\n");
- do_gettimeofday_fast(&tv);
-
- for (j = 0; j < 1000; j++)
- {
- j_u[j] = GET_JIFFIES_USEC();
- }
- for (j = 0; j < 100; j++)
- {
- do_gettimeofday_fast(&tv_exp[j]);
- }
- printk(KERN_DEBUG "fast_timer_test() %is %06i\n", tv.tv_jiff, tv.tv_usec);
-
- for (j = 0; j < 1000; j++)
- {
- printk(KERN_DEBUG "%i %i %i %i %i\n",
- j_u[j], j_u[j+1], j_u[j+2], j_u[j+3], j_u[j+4]);
- j += 4;
- }
- for (j = 0; j < 100; j++)
- {
- printk(KERN_DEBUG "%i.%i %i.%i %i.%i %i.%i %i.%i\n",
- tv_exp[j].tv_jiff, tv_exp[j].tv_usec,
- tv_exp[j+1].tv_jiff, tv_exp[j+1].tv_usec,
- tv_exp[j+2].tv_jiff, tv_exp[j+2].tv_usec,
- tv_exp[j+3].tv_jiff, tv_exp[j+3].tv_usec,
- tv_exp[j+4].tv_jiff, tv_exp[j+4].tv_usec);
- j += 4;
- }
- do_gettimeofday_fast(&tv0);
- start_one_shot_timer(&tr[i], test_timeout, i, 50000, "test0");
- DP(proc_fasttimer_read(buf0, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout, i, 70000, "test1");
- DP(proc_fasttimer_read(buf1, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout, i, 40000, "test2");
- DP(proc_fasttimer_read(buf2, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout, i, 60000, "test3");
- DP(proc_fasttimer_read(buf3, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout1, i, 55000, "test4xx");
- DP(proc_fasttimer_read(buf4, NULL, 0, 0, 0));
- i++;
- do_gettimeofday_fast(&tv1);
-
- proc_fasttimer_read(buf5, NULL, 0, 0, 0);
-
- prev_num = num_test_timeout;
- while (num_test_timeout < i)
- {
- if (num_test_timeout != prev_num)
- prev_num = num_test_timeout;
- }
- do_gettimeofday_fast(&tv2);
- printk(KERN_INFO "Timers started %is %06i\n",
- tv0.tv_jiff, tv0.tv_usec);
- printk(KERN_INFO "Timers started at %is %06i\n",
- tv1.tv_jiff, tv1.tv_usec);
- printk(KERN_INFO "Timers done %is %06i\n",
- tv2.tv_jiff, tv2.tv_usec);
- DP(printk("buf0:\n");
- printk(buf0);
- printk("buf1:\n");
- printk(buf1);
- printk("buf2:\n");
- printk(buf2);
- printk("buf3:\n");
- printk(buf3);
- printk("buf4:\n");
- printk(buf4);
- );
- printk("buf5:\n");
- printk(buf5);
-
- printk("timers set:\n");
- for(j = 0; j<i; j++)
- {
- struct fast_timer *t = &tr[j];
- printk("%-10s set: %6is %06ius exp: %6is %06ius "
- "data: 0x%08X func: 0x%08X\n",
- t->name,
- t->tv_set.tv_jiff,
- t->tv_set.tv_usec,
- t->tv_expires.tv_jiff,
- t->tv_expires.tv_usec,
- t->data,
- t->function
- );
-
- printk(" del: %6ius did exp: %6is %06ius as #%i error: %6li\n",
- t->delay_us,
- tv_exp[j].tv_jiff,
- tv_exp[j].tv_usec,
- exp_num[j],
- (tv_exp[j].tv_jiff - t->tv_expires.tv_jiff) *
- 1000000 + tv_exp[j].tv_usec -
- t->tv_expires.tv_usec);
- }
- proc_fasttimer_read(buf5, NULL, 0, 0, 0);
- printk("buf5 after all done:\n");
- printk(buf5);
- printk("fast_timer_test() done\n");
-}
-#endif
-
-
-int fast_timer_init(void)
-{
- /* For some reason, request_irq() hangs when called froom time_init() */
- if (!fast_timer_is_init)
- {
- printk("fast_timer_init()\n");
-
-#ifdef CONFIG_PROC_FS
- proc_create("fasttimer", 0, NULL, &proc_fasttimer_fops);
-#endif /* PROC_FS */
- if (request_irq(TIMER0_INTR_VECT, timer_trig_interrupt,
- IRQF_SHARED,
- "fast timer int", &fast_timer_list))
- printk(KERN_ERR "err: fasttimer irq\n");
- fast_timer_is_init = 1;
-#ifdef FAST_TIMER_TEST
- printk("do test\n");
- fast_timer_test();
-#endif
- }
- return 0;
-}
-__initcall(fast_timer_init);
diff --git a/arch/cris/arch-v32/kernel/head.S b/arch/cris/arch-v32/kernel/head.S
deleted file mode 100644
index 92f9fb1f6845..000000000000
--- a/arch/cris/arch-v32/kernel/head.S
+++ /dev/null
@@ -1,439 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * CRISv32 kernel startup code.
- *
- * Copyright (C) 2003, Axis Communications AB
- */
-
-#include <linux/init.h>
-
-#define ASSEMBLER_MACROS_ONLY
-
-/*
- * The macros found in mmu_defs_asm.h uses the ## concatenation operator, so
- * -traditional must not be used when assembling this file.
- */
-#include <arch/memmap.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/intr_vect.h>
-#include <hwregs/asm/mmu_defs_asm.h>
-#include <hwregs/asm/reg_map_asm.h>
-#include <mach/startup.inc>
-
-#define CRAMFS_MAGIC 0x28cd3d45
-#define JHEAD_MAGIC 0x1FF528A6
-#define JHEAD_SIZE 8
-#define RAM_INIT_MAGIC 0x56902387
-#define COMMAND_LINE_MAGIC 0x87109563
-#define NAND_BOOT_MAGIC 0x9a9db001
-
- ;; NOTE: R8 and R9 carry information from the decompressor (if the
- ;; kernel was compressed). They must not be used in the code below
- ;; until they are read!
-
- ;; Exported symbols.
- .global etrax_irv
- .global romfs_start
- .global romfs_length
- .global romfs_in_flash
- .global nand_boot
- .global swapper_pg_dir
-
- __HEAD
-tstart:
- ;; This is the entry point of the kernel. The CPU is currently in
- ;; supervisor mode.
- ;;
- ;; 0x00000000 if flash.
- ;; 0x40004000 if DRAM.
- ;;
- di
-
- START_CLOCKS
-
- SETUP_WAIT_STATES
-
- GIO_INIT
-
- ;; Setup and enable the MMU. Use same configuration for both the data
- ;; and the instruction MMU.
- ;;
- ;; Note; 3 cycles is needed for a bank-select to take effect. Further;
- ;; bank 1 is the instruction MMU, bank 2 is the data MMU.
-
-#ifdef CONFIG_CRIS_MACH_ARTPEC3
- move.d REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8) \
- | REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4) \
- | REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 5) \
- | REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
-#else
- move.d REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8) \
- | REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4) \
- | REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
-#endif
-
- ;; Temporary map of 0x40 -> 0x40 and 0x00 -> 0x00.
- move.d REG_FIELD(mmu, rw_mm_kbase_lo, base_4, 4) \
- | REG_FIELD(mmu, rw_mm_kbase_lo, base_0, 0), $r1
-
- ;; Enable certain page protections and setup linear mapping
- ;; for f,e,c,b,4,0.
-
- ;; ARTPEC-3:
- ;; c,d used for linear kernel mapping, up to 512 MB
- ;; e used for vmalloc
- ;; f unused, but page mapped to get page faults
-
- ;; ETRAX FS:
- ;; c used for linear kernel mapping, up to 256 MB
- ;; d used for vmalloc
- ;; e,f used for memory-mapped NOR flash
-
-#ifdef CONFIG_CRIS_MACH_ARTPEC3
- move.d REG_STATE(mmu, rw_mm_cfg, we, on) \
- | REG_STATE(mmu, rw_mm_cfg, acc, on) \
- | REG_STATE(mmu, rw_mm_cfg, ex, on) \
- | REG_STATE(mmu, rw_mm_cfg, inv, on) \
- | REG_STATE(mmu, rw_mm_cfg, seg_f, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_e, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_d, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_c, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_b, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_a, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_9, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_8, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_7, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_6, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_5, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_4, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_3, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_2, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_1, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
-#else
- move.d REG_STATE(mmu, rw_mm_cfg, we, on) \
- | REG_STATE(mmu, rw_mm_cfg, acc, on) \
- | REG_STATE(mmu, rw_mm_cfg, ex, on) \
- | REG_STATE(mmu, rw_mm_cfg, inv, on) \
- | REG_STATE(mmu, rw_mm_cfg, seg_f, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_e, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_d, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_c, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_b, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_a, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_9, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_8, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_7, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_6, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_5, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_4, linear) \
- | REG_STATE(mmu, rw_mm_cfg, seg_3, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_2, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_1, page) \
- | REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
-#endif
-
- ;; Update instruction MMU.
- move 1, $srs
- nop
- nop
- nop
- move $r0, $s2 ; kbase_hi.
- move $r1, $s1 ; kbase_lo.
- move $r2, $s0 ; mm_cfg, virtual memory configuration.
-
- ;; Update data MMU.
- move 2, $srs
- nop
- nop
- nop
- move $r0, $s2 ; kbase_hi.
- move $r1, $s1 ; kbase_lo
- move $r2, $s0 ; mm_cfg, virtual memory configuration.
-
- ;; Enable data and instruction MMU.
- move 0, $srs
- moveq 0xf, $r0 ; IMMU, DMMU, DCache, Icache on
- nop
- nop
- nop
- move $r0, $s0
- nop
- nop
- nop
-
- ; Check if starting from DRAM (network->RAM boot or unpacked
- ; compressed kernel), or directly from flash.
- lapcq ., $r0
- and.d 0x7fffffff, $r0 ; Mask off the non-cache bit.
- cmp.d 0x10000, $r0 ; Arbitrary, something above this code.
- blo _inflash0
- nop
-
- jump _inram ; Jump to cached RAM.
- nop
-
- ;; Jumpgate.
-_inflash0:
- jump _inflash
- nop
-
- ;; Put the following in a section so that storage for it can be
- ;; reclaimed after init is finished.
- __INIT
-
-_inflash:
-
- ;; Initialize DRAM.
- cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized?
- beq _dram_initialized
- nop
-
-#if defined CONFIG_ETRAXFS
-#include "../mach-fs/dram_init.S"
-#elif defined CONFIG_CRIS_MACH_ARTPEC3
-#include "../mach-a3/dram_init.S"
-#else
-#error Only ETRAXFS and ARTPEC-3 supported!
-#endif
-
-
-_dram_initialized:
- ;; Copy the text and data section to DRAM. This depends on that the
- ;; variables used below are correctly set up by the linker script.
- ;; The calculated value stored in R4 is used below.
- ;; Leave the cramfs file system (piggybacked after the kernel) in flash.
- moveq 0, $r0 ; Source.
- move.d text_start, $r1 ; Destination.
- move.d __vmlinux_end, $r2
- move.d $r2, $r4
- sub.d $r1, $r4
-1: move.w [$r0+], $r3
- move.w $r3, [$r1+]
- cmp.d $r2, $r1
- blo 1b
- nop
-
- ;; Check for cramfs.
- moveq 0, $r0
- move.d romfs_length, $r1
- move.d $r0, [$r1]
- move.d [$r4], $r0 ; cramfs_super.magic
- cmp.d CRAMFS_MAGIC, $r0
- bne 1f
- nop
-
- ;; Set length and start of cramfs, set romfs_in_flash flag
- addoq +4, $r4, $acr
- move.d [$acr], $r0
- move.d romfs_length, $r1
- move.d $r0, [$r1]
- add.d 0xf0000000, $r4 ; Add cached flash start in virtual memory.
- move.d romfs_start, $r1
- move.d $r4, [$r1]
-1: moveq 1, $r0
- move.d romfs_in_flash, $r1
- move.d $r0, [$r1]
-
- jump _start_it ; Jump to cached code.
- nop
-
-_inram:
- ;; Check if booting from NAND flash; if so, set appropriate flags
- ;; and move on.
- cmp.d NAND_BOOT_MAGIC, $r12
- bne move_cramfs ; not nand, jump
- moveq 1, $r0
- move.d nand_boot, $r1 ; tell axisflashmap we're booting from NAND
- move.d $r0, [$r1]
- moveq 0, $r0 ; tell axisflashmap romfs is not in
- move.d romfs_in_flash, $r1 ; (directly accessed) flash
- move.d $r0, [$r1]
- jump _start_it ; continue with boot
- nop
-
-move_cramfs:
- ;; kernel is in DRAM.
- ;; Must figure out if there is a piggybacked rootfs image or not.
- ;; Set romfs_length to 0 => no rootfs image available by default.
- moveq 0, $r0
- move.d romfs_length, $r1
- move.d $r0, [$r1]
-
- ;; The kernel could have been unpacked to DRAM by the loader, but
- ;; the cramfs image could still be in the flash immediately
- ;; following the compressed kernel image. The loader passes the address
- ;; of the byte succeeding the last compressed byte in the flash in
- ;; register R9 when starting the kernel.
- cmp.d 0x0ffffff8, $r9
- bhs _no_romfs_in_flash ; R9 points outside the flash area.
- nop
- ;; cramfs rootfs might to be in flash. Check for it.
- move.d [$r9], $r0 ; cramfs_super.magic
- cmp.d CRAMFS_MAGIC, $r0
- bne _no_romfs_in_flash
- nop
-
- ;; found cramfs in flash. set address and size, and romfs_in_flash flag.
- addoq +4, $r9, $acr
- move.d [$acr], $r0
- move.d romfs_length, $r1
- move.d $r0, [$r1]
- add.d 0xf0000000, $r9 ; Add cached flash start in virtual memory.
- move.d romfs_start, $r1
- move.d $r9, [$r1]
- moveq 1, $r0
- move.d romfs_in_flash, $r1
- move.d $r0, [$r1]
-
- jump _start_it ; Jump to cached code.
- nop
-
-_no_romfs_in_flash:
- ;; No romfs in flash, so look for cramfs, or jffs2 with jhead,
- ;; after kernel in RAM, as is the case with network->RAM boot.
- ;; For cramfs, partition starts with magic and length.
- ;; For jffs2, a jhead is prepended which contains with magic and length.
- ;; The jhead is not part of the jffs2 partition however.
- move.d __bss_start, $r0
- move.d [$r0], $r1
- cmp.d CRAMFS_MAGIC, $r1 ; cramfs magic?
- beq 2f ; yes, jump
- nop
- cmp.d JHEAD_MAGIC, $r1 ; jffs2 (jhead) magic?
- bne 4f ; no, skip copy
- nop
- addq 4, $r0 ; location of jffs2 size
- move.d [$r0+], $r2 ; fetch jffs2 size -> r2
- ; r0 now points to start of jffs2
- ba 3f
- nop
-2:
- addoq +4, $r0, $acr ; location of cramfs size
- move.d [$acr], $r2 ; fetch cramfs size -> r2
- ; r0 still points to start of cramfs
-3:
- ;; Now, move the root fs to after kernel's BSS
-
- move.d _end, $r1 ; start of cramfs -> r1
- move.d romfs_start, $r3
- move.d $r1, [$r3] ; store at romfs_start (for axisflashmap)
- move.d romfs_length, $r3
- move.d $r2, [$r3] ; store size at romfs_length
-
- add.d $r2, $r0 ; copy from end and downwards
- add.d $r2, $r1
-
- lsrq 1, $r2 ; Size is in bytes, we copy words.
- addq 1, $r2
-1:
- move.w [$r0], $r3
- move.w $r3, [$r1]
- subq 2, $r0
- subq 2, $r1
- subq 1, $r2
- bne 1b
- nop
-
-4:
- ;; BSS move done.
- ;; Clear romfs_in_flash flag, as we now know romfs is in DRAM
- ;; Also clear nand_boot flag; if we got here, we know we've not
- ;; booted from NAND flash.
- moveq 0, $r0
- move.d romfs_in_flash, $r1
- move.d $r0, [$r1]
- moveq 0, $r0
- move.d nand_boot, $r1
- move.d $r0, [$r1]
-
- jump _start_it ; Jump to cached code.
- nop
-
-_start_it:
-
- ;; Check if kernel command line is supplied
- cmp.d COMMAND_LINE_MAGIC, $r10
- bne no_command_line
- nop
-
- move.d 256, $r13
- move.d cris_command_line, $r10
- or.d 0x80000000, $r11 ; Make it virtual
-1:
- move.b [$r11+], $r1
- move.b $r1, [$r10+]
- subq 1, $r13
- bne 1b
- nop
-
-no_command_line:
-
- ;; The kernel stack contains a task structure for each task. This
- ;; the initial kernel stack is in the same page as the init_task,
- ;; but starts at the top of the page, i.e. + 8192 bytes.
- move.d init_thread_union + 8192, $sp
- move.d ebp_start, $r0 ; Defined in linker-script.
- move $r0, $ebp
- move.d etrax_irv, $r1 ; Set the exception base register and pointer.
- move.d $r0, [$r1]
-
- ;; Clear the BSS region from _bss_start to _end.
- move.d __bss_start, $r0
- move.d _end, $r1
-1: clear.d [$r0+]
- cmp.d $r1, $r0
- blo 1b
- nop
-
- ; Initialize registers to increase determinism
- move.d __bss_start, $r0
- movem [$r0], $r13
-
-#ifdef CONFIG_ETRAX_L2CACHE
- jsr l2cache_init
- nop
-#endif
-
- jump start_kernel ; Jump to start_kernel() in init/main.c.
- nop
-
- .data
-etrax_irv:
- .dword 0
-
-; Variables for communication with the Axis flash map driver (axisflashmap),
-; and for setting up memory in arch/cris/kernel/setup.c .
-
-; romfs_start is set to the start of the root file system, if it exists
-; in directly accessible memory (i.e. NOR Flash when booting from Flash,
-; or RAM when booting directly from a network-downloaded RAM image)
-romfs_start:
- .dword 0
-
-; romfs_length is set to the size of the root file system image, if it exists
-; in directly accessible memory (see romfs_start). Otherwise it is set to 0.
-romfs_length:
- .dword 0
-
-; romfs_in_flash is set to 1 if the root file system resides in directly
-; accessible flash memory (i.e. NOR flash). It is set to 0 for RAM boot
-; or NAND flash boot.
-romfs_in_flash:
- .dword 0
-
-; nand_boot is set to 1 when the kernel has been booted from NAND flash
-nand_boot:
- .dword 0
-
-swapper_pg_dir = 0xc0002000
-
- .section ".init.data", "aw"
-
-#if defined CONFIG_ETRAXFS
-#include "../mach-fs/hw_settings.S"
-#elif defined CONFIG_CRIS_MACH_ARTPEC3
-#include "../mach-a3/hw_settings.S"
-#else
-#error Only ETRAXFS and ARTPEC-3 supported!
-#endif
diff --git a/arch/cris/arch-v32/kernel/irq.c b/arch/cris/arch-v32/kernel/irq.c
deleted file mode 100644
index 414afd543232..000000000000
--- a/arch/cris/arch-v32/kernel/irq.c
+++ /dev/null
@@ -1,520 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2003, Axis Communications AB.
- */
-
-#include <asm/irq.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/smp.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/profile.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/threads.h>
-#include <linux/spinlock.h>
-#include <linux/kernel_stat.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/intr_vect.h>
-#include <hwregs/intr_vect_defs.h>
-
-#define CPU_FIXED -1
-
-/* IRQ masks (refer to comment for crisv32_do_multiple) */
-#if TIMER0_INTR_VECT - FIRST_IRQ < 32
-#define TIMER_MASK (1 << (TIMER0_INTR_VECT - FIRST_IRQ))
-#undef TIMER_VECT1
-#else
-#define TIMER_MASK (1 << (TIMER0_INTR_VECT - FIRST_IRQ - 32))
-#define TIMER_VECT1
-#endif
-#ifdef CONFIG_ETRAX_KGDB
-#if defined(CONFIG_ETRAX_KGDB_PORT0)
-#define IGNOREMASK (1 << (SER0_INTR_VECT - FIRST_IRQ))
-#elif defined(CONFIG_ETRAX_KGDB_PORT1)
-#define IGNOREMASK (1 << (SER1_INTR_VECT - FIRST_IRQ))
-#elif defined(CONFIG_ETRAX_KGDB_PORT2)
-#define IGNOREMASK (1 << (SER2_INTR_VECT - FIRST_IRQ))
-#elif defined(CONFIG_ETRAX_KGDB_PORT3)
-#define IGNOREMASK (1 << (SER3_INTR_VECT - FIRST_IRQ))
-#endif
-#endif
-
-DEFINE_SPINLOCK(irq_lock);
-
-struct cris_irq_allocation
-{
- int cpu; /* The CPU to which the IRQ is currently allocated. */
- cpumask_t mask; /* The CPUs to which the IRQ may be allocated. */
-};
-
-struct cris_irq_allocation irq_allocations[NR_REAL_IRQS] =
- { [0 ... NR_REAL_IRQS - 1] = {0, CPU_MASK_ALL} };
-
-static unsigned long irq_regs[NR_CPUS] =
-{
- regi_irq,
-};
-
-#if NR_REAL_IRQS > 32
-#define NBR_REGS 2
-#else
-#define NBR_REGS 1
-#endif
-
-unsigned long cpu_irq_counters[NR_CPUS];
-unsigned long irq_counters[NR_REAL_IRQS];
-
-/* From irq.c. */
-extern void weird_irq(void);
-
-/* From entry.S. */
-extern void system_call(void);
-extern void nmi_interrupt(void);
-extern void multiple_interrupt(void);
-extern void gdb_handle_exception(void);
-extern void i_mmu_refill(void);
-extern void i_mmu_invalid(void);
-extern void i_mmu_access(void);
-extern void i_mmu_execute(void);
-extern void d_mmu_refill(void);
-extern void d_mmu_invalid(void);
-extern void d_mmu_access(void);
-extern void d_mmu_write(void);
-
-/* From kgdb.c. */
-extern void kgdb_init(void);
-extern void breakpoint(void);
-
-/* From traps.c. */
-extern void breakh_BUG(void);
-
-/*
- * Build the IRQ handler stubs using macros from irq.h.
- */
-#ifdef CONFIG_CRIS_MACH_ARTPEC3
-BUILD_TIMER_IRQ(0x31, 0)
-#else
-BUILD_IRQ(0x31)
-#endif
-BUILD_IRQ(0x32)
-BUILD_IRQ(0x33)
-BUILD_IRQ(0x34)
-BUILD_IRQ(0x35)
-BUILD_IRQ(0x36)
-BUILD_IRQ(0x37)
-BUILD_IRQ(0x38)
-BUILD_IRQ(0x39)
-BUILD_IRQ(0x3a)
-BUILD_IRQ(0x3b)
-BUILD_IRQ(0x3c)
-BUILD_IRQ(0x3d)
-BUILD_IRQ(0x3e)
-BUILD_IRQ(0x3f)
-BUILD_IRQ(0x40)
-BUILD_IRQ(0x41)
-BUILD_IRQ(0x42)
-BUILD_IRQ(0x43)
-BUILD_IRQ(0x44)
-BUILD_IRQ(0x45)
-BUILD_IRQ(0x46)
-BUILD_IRQ(0x47)
-BUILD_IRQ(0x48)
-BUILD_IRQ(0x49)
-BUILD_IRQ(0x4a)
-#ifdef CONFIG_ETRAXFS
-BUILD_TIMER_IRQ(0x4b, 0)
-#else
-BUILD_IRQ(0x4b)
-#endif
-BUILD_IRQ(0x4c)
-BUILD_IRQ(0x4d)
-BUILD_IRQ(0x4e)
-BUILD_IRQ(0x4f)
-BUILD_IRQ(0x50)
-#if MACH_IRQS > 32
-BUILD_IRQ(0x51)
-BUILD_IRQ(0x52)
-BUILD_IRQ(0x53)
-BUILD_IRQ(0x54)
-BUILD_IRQ(0x55)
-BUILD_IRQ(0x56)
-BUILD_IRQ(0x57)
-BUILD_IRQ(0x58)
-BUILD_IRQ(0x59)
-BUILD_IRQ(0x5a)
-BUILD_IRQ(0x5b)
-BUILD_IRQ(0x5c)
-BUILD_IRQ(0x5d)
-BUILD_IRQ(0x5e)
-BUILD_IRQ(0x5f)
-BUILD_IRQ(0x60)
-BUILD_IRQ(0x61)
-BUILD_IRQ(0x62)
-BUILD_IRQ(0x63)
-BUILD_IRQ(0x64)
-BUILD_IRQ(0x65)
-BUILD_IRQ(0x66)
-BUILD_IRQ(0x67)
-BUILD_IRQ(0x68)
-BUILD_IRQ(0x69)
-BUILD_IRQ(0x6a)
-BUILD_IRQ(0x6b)
-BUILD_IRQ(0x6c)
-BUILD_IRQ(0x6d)
-BUILD_IRQ(0x6e)
-BUILD_IRQ(0x6f)
-BUILD_IRQ(0x70)
-#endif
-
-/* Pointers to the low-level handlers. */
-static void (*interrupt[MACH_IRQS])(void) = {
- IRQ0x31_interrupt, IRQ0x32_interrupt, IRQ0x33_interrupt,
- IRQ0x34_interrupt, IRQ0x35_interrupt, IRQ0x36_interrupt,
- IRQ0x37_interrupt, IRQ0x38_interrupt, IRQ0x39_interrupt,
- IRQ0x3a_interrupt, IRQ0x3b_interrupt, IRQ0x3c_interrupt,
- IRQ0x3d_interrupt, IRQ0x3e_interrupt, IRQ0x3f_interrupt,
- IRQ0x40_interrupt, IRQ0x41_interrupt, IRQ0x42_interrupt,
- IRQ0x43_interrupt, IRQ0x44_interrupt, IRQ0x45_interrupt,
- IRQ0x46_interrupt, IRQ0x47_interrupt, IRQ0x48_interrupt,
- IRQ0x49_interrupt, IRQ0x4a_interrupt, IRQ0x4b_interrupt,
- IRQ0x4c_interrupt, IRQ0x4d_interrupt, IRQ0x4e_interrupt,
- IRQ0x4f_interrupt, IRQ0x50_interrupt,
-#if MACH_IRQS > 32
- IRQ0x51_interrupt, IRQ0x52_interrupt, IRQ0x53_interrupt,
- IRQ0x54_interrupt, IRQ0x55_interrupt, IRQ0x56_interrupt,
- IRQ0x57_interrupt, IRQ0x58_interrupt, IRQ0x59_interrupt,
- IRQ0x5a_interrupt, IRQ0x5b_interrupt, IRQ0x5c_interrupt,
- IRQ0x5d_interrupt, IRQ0x5e_interrupt, IRQ0x5f_interrupt,
- IRQ0x60_interrupt, IRQ0x61_interrupt, IRQ0x62_interrupt,
- IRQ0x63_interrupt, IRQ0x64_interrupt, IRQ0x65_interrupt,
- IRQ0x66_interrupt, IRQ0x67_interrupt, IRQ0x68_interrupt,
- IRQ0x69_interrupt, IRQ0x6a_interrupt, IRQ0x6b_interrupt,
- IRQ0x6c_interrupt, IRQ0x6d_interrupt, IRQ0x6e_interrupt,
- IRQ0x6f_interrupt, IRQ0x70_interrupt,
-#endif
-};
-
-void
-block_irq(int irq, int cpu)
-{
- int intr_mask;
- unsigned long flags;
-
- spin_lock_irqsave(&irq_lock, flags);
- /* Remember, 1 let thru, 0 block. */
- if (irq - FIRST_IRQ < 32) {
- intr_mask = REG_RD_INT_VECT(intr_vect, irq_regs[cpu],
- rw_mask, 0);
- intr_mask &= ~(1 << (irq - FIRST_IRQ));
- REG_WR_INT_VECT(intr_vect, irq_regs[cpu], rw_mask,
- 0, intr_mask);
- } else {
- intr_mask = REG_RD_INT_VECT(intr_vect, irq_regs[cpu],
- rw_mask, 1);
- intr_mask &= ~(1 << (irq - FIRST_IRQ - 32));
- REG_WR_INT_VECT(intr_vect, irq_regs[cpu], rw_mask,
- 1, intr_mask);
- }
- spin_unlock_irqrestore(&irq_lock, flags);
-}
-
-void
-unblock_irq(int irq, int cpu)
-{
- int intr_mask;
- unsigned long flags;
-
- spin_lock_irqsave(&irq_lock, flags);
- /* Remember, 1 let thru, 0 block. */
- if (irq - FIRST_IRQ < 32) {
- intr_mask = REG_RD_INT_VECT(intr_vect, irq_regs[cpu],
- rw_mask, 0);
- intr_mask |= (1 << (irq - FIRST_IRQ));
- REG_WR_INT_VECT(intr_vect, irq_regs[cpu], rw_mask,
- 0, intr_mask);
- } else {
- intr_mask = REG_RD_INT_VECT(intr_vect, irq_regs[cpu],
- rw_mask, 1);
- intr_mask |= (1 << (irq - FIRST_IRQ - 32));
- REG_WR_INT_VECT(intr_vect, irq_regs[cpu], rw_mask,
- 1, intr_mask);
- }
- spin_unlock_irqrestore(&irq_lock, flags);
-}
-
-/* Find out which CPU the irq should be allocated to. */
-static int irq_cpu(int irq)
-{
- int cpu;
- unsigned long flags;
-
- spin_lock_irqsave(&irq_lock, flags);
- cpu = irq_allocations[irq - FIRST_IRQ].cpu;
-
- /* Fixed interrupts stay on the local CPU. */
- if (cpu == CPU_FIXED)
- {
- spin_unlock_irqrestore(&irq_lock, flags);
- return smp_processor_id();
- }
-
-
- /* Let the interrupt stay if possible */
- if (cpumask_test_cpu(cpu, &irq_allocations[irq - FIRST_IRQ].mask))
- goto out;
-
- /* IRQ must be moved to another CPU. */
- cpu = cpumask_first(&irq_allocations[irq - FIRST_IRQ].mask);
- irq_allocations[irq - FIRST_IRQ].cpu = cpu;
-out:
- spin_unlock_irqrestore(&irq_lock, flags);
- return cpu;
-}
-
-void crisv32_mask_irq(int irq)
-{
- int cpu;
-
- for (cpu = 0; cpu < NR_CPUS; cpu++)
- block_irq(irq, cpu);
-}
-
-void crisv32_unmask_irq(int irq)
-{
- unblock_irq(irq, irq_cpu(irq));
-}
-
-
-static void enable_crisv32_irq(struct irq_data *data)
-{
- crisv32_unmask_irq(data->irq);
-}
-
-static void disable_crisv32_irq(struct irq_data *data)
-{
- crisv32_mask_irq(data->irq);
-}
-
-static int set_affinity_crisv32_irq(struct irq_data *data,
- const struct cpumask *dest, bool force)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&irq_lock, flags);
- irq_allocations[data->irq - FIRST_IRQ].mask = *dest;
- spin_unlock_irqrestore(&irq_lock, flags);
- return 0;
-}
-
-static struct irq_chip crisv32_irq_type = {
- .name = "CRISv32",
- .irq_shutdown = disable_crisv32_irq,
- .irq_enable = enable_crisv32_irq,
- .irq_disable = disable_crisv32_irq,
- .irq_set_affinity = set_affinity_crisv32_irq,
-};
-
-void
-set_exception_vector(int n, irqvectptr addr)
-{
- etrax_irv->v[n] = (irqvectptr) addr;
-}
-
-extern void do_IRQ(int irq, struct pt_regs * regs);
-
-void
-crisv32_do_IRQ(int irq, int block, struct pt_regs* regs)
-{
- /* Interrupts that may not be moved to another CPU may
- * skip blocking. This is currently only valid for the
- * timer IRQ and the IPI and is used for the timer
- * interrupt to avoid watchdog starvation.
- */
- if (!block) {
- do_IRQ(irq, regs);
- return;
- }
-
- block_irq(irq, smp_processor_id());
- do_IRQ(irq, regs);
-
- unblock_irq(irq, irq_cpu(irq));
-}
-
-/* If multiple interrupts occur simultaneously we get a multiple
- * interrupt from the CPU and software has to sort out which
- * interrupts that happened. There are two special cases here:
- *
- * 1. Timer interrupts may never be blocked because of the
- * watchdog (refer to comment in include/asr/arch/irq.h)
- * 2. GDB serial port IRQs are unhandled here and will be handled
- * as a single IRQ when it strikes again because the GDB
- * stubb wants to save the registers in its own fashion.
- */
-void
-crisv32_do_multiple(struct pt_regs* regs)
-{
- int cpu;
- int mask;
- int masked[NBR_REGS];
- int bit;
- int i;
-
- cpu = smp_processor_id();
-
- /* An extra irq_enter here to prevent softIRQs to run after
- * each do_IRQ. This will decrease the interrupt latency.
- */
- irq_enter();
-
- for (i = 0; i < NBR_REGS; i++) {
- /* Get which IRQs that happened. */
- masked[i] = REG_RD_INT_VECT(intr_vect, irq_regs[cpu],
- r_masked_vect, i);
-
- /* Calculate new IRQ mask with these IRQs disabled. */
- mask = REG_RD_INT_VECT(intr_vect, irq_regs[cpu], rw_mask, i);
- mask &= ~masked[i];
-
- /* Timer IRQ is never masked */
-#ifdef TIMER_VECT1
- if ((i == 1) && (masked[0] & TIMER_MASK))
- mask |= TIMER_MASK;
-#else
- if ((i == 0) && (masked[0] & TIMER_MASK))
- mask |= TIMER_MASK;
-#endif
- /* Block all the IRQs */
- REG_WR_INT_VECT(intr_vect, irq_regs[cpu], rw_mask, i, mask);
-
- /* Check for timer IRQ and handle it special. */
-#ifdef TIMER_VECT1
- if ((i == 1) && (masked[i] & TIMER_MASK)) {
- masked[i] &= ~TIMER_MASK;
- do_IRQ(TIMER0_INTR_VECT, regs);
- }
-#else
- if ((i == 0) && (masked[i] & TIMER_MASK)) {
- masked[i] &= ~TIMER_MASK;
- do_IRQ(TIMER0_INTR_VECT, regs);
- }
-#endif
- }
-
-#ifdef IGNORE_MASK
- /* Remove IRQs that can't be handled as multiple. */
- masked[0] &= ~IGNORE_MASK;
-#endif
-
- /* Handle the rest of the IRQs. */
- for (i = 0; i < NBR_REGS; i++) {
- for (bit = 0; bit < 32; bit++) {
- if (masked[i] & (1 << bit))
- do_IRQ(bit + FIRST_IRQ + i*32, regs);
- }
- }
-
- /* Unblock all the IRQs. */
- for (i = 0; i < NBR_REGS; i++) {
- mask = REG_RD_INT_VECT(intr_vect, irq_regs[cpu], rw_mask, i);
- mask |= masked[i];
- REG_WR_INT_VECT(intr_vect, irq_regs[cpu], rw_mask, i, mask);
- }
-
- /* This irq_exit() will trigger the soft IRQs. */
- irq_exit();
-}
-
-static int crisv32_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw_irq_num)
-{
- irq_set_chip_and_handler(virq, &crisv32_irq_type, handle_simple_irq);
-
- return 0;
-}
-
-static struct irq_domain_ops crisv32_irq_ops = {
- .map = crisv32_irq_map,
- .xlate = irq_domain_xlate_onecell,
-};
-
-/*
- * This is called by start_kernel. It fixes the IRQ masks and setup the
- * interrupt vector table to point to bad_interrupt pointers.
- */
-void __init
-init_IRQ(void)
-{
- int i;
- int j;
- reg_intr_vect_rw_mask vect_mask = {0};
- struct device_node *np;
- struct irq_domain *domain;
-
- /* Clear all interrupts masks. */
- for (i = 0; i < NBR_REGS; i++)
- REG_WR_VECT(intr_vect, regi_irq, rw_mask, i, vect_mask);
-
- for (i = 0; i < 256; i++)
- etrax_irv->v[i] = weird_irq;
-
- np = of_find_compatible_node(NULL, NULL, "axis,crisv32-intc");
- domain = irq_domain_add_legacy(np, NBR_INTR_VECT - FIRST_IRQ,
- FIRST_IRQ, FIRST_IRQ,
- &crisv32_irq_ops, NULL);
- BUG_ON(!domain);
- irq_set_default_host(domain);
- of_node_put(np);
-
- for (i = FIRST_IRQ, j = 0; j < NBR_INTR_VECT && j < MACH_IRQS; i++, j++)
- set_exception_vector(i, interrupt[j]);
-
- /* Mark Timer and IPI IRQs as CPU local */
- irq_allocations[TIMER0_INTR_VECT - FIRST_IRQ].cpu = CPU_FIXED;
- irq_set_status_flags(TIMER0_INTR_VECT, IRQ_PER_CPU);
- irq_allocations[IPI_INTR_VECT - FIRST_IRQ].cpu = CPU_FIXED;
- irq_set_status_flags(IPI_INTR_VECT, IRQ_PER_CPU);
-
- set_exception_vector(0x00, nmi_interrupt);
- set_exception_vector(0x30, multiple_interrupt);
-
- /* Set up handler for various MMU bus faults. */
- set_exception_vector(0x04, i_mmu_refill);
- set_exception_vector(0x05, i_mmu_invalid);
- set_exception_vector(0x06, i_mmu_access);
- set_exception_vector(0x07, i_mmu_execute);
- set_exception_vector(0x08, d_mmu_refill);
- set_exception_vector(0x09, d_mmu_invalid);
- set_exception_vector(0x0a, d_mmu_access);
- set_exception_vector(0x0b, d_mmu_write);
-
-#ifdef CONFIG_BUG
- /* Break 14 handler, used to implement cheap BUG(). */
- set_exception_vector(0x1e, breakh_BUG);
-#endif
-
- /* The system-call trap is reached by "break 13". */
- set_exception_vector(0x1d, system_call);
-
- /* Exception handlers for debugging, both user-mode and kernel-mode. */
-
- /* Break 8. */
- set_exception_vector(0x18, gdb_handle_exception);
- /* Hardware single step. */
- set_exception_vector(0x3, gdb_handle_exception);
- /* Hardware breakpoint. */
- set_exception_vector(0xc, gdb_handle_exception);
-
-#ifdef CONFIG_ETRAX_KGDB
- kgdb_init();
- /* Everything is set up; now trap the kernel. */
- breakpoint();
-#endif
-}
-
diff --git a/arch/cris/arch-v32/kernel/kgdb.c b/arch/cris/arch-v32/kernel/kgdb.c
deleted file mode 100644
index 3d6f516763a5..000000000000
--- a/arch/cris/arch-v32/kernel/kgdb.c
+++ /dev/null
@@ -1,1593 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * arch/cris/arch-v32/kernel/kgdb.c
- *
- * CRIS v32 version by Orjan Friberg, Axis Communications AB.
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
- *
- * Originally written by Glenn Engel, Lake Stevens Instrument Division
- *
- * Contributed by HP Systems
- *
- * Modified for SPARC by Stu Grossman, Cygnus Support.
- *
- * Modified for Linux/MIPS (and MIPS in general) by Andreas Busse
- * Send complaints, suggestions etc. to <andy@waldorf-gmbh.de>
- *
- * Copyright (C) 1995 Andreas Busse
- */
-
-/* FIXME: Check the documentation. */
-
-/*
- * kgdb usage notes:
- * -----------------
- *
- * If you select CONFIG_ETRAX_KGDB in the configuration, the kernel will be
- * built with different gcc flags: "-g" is added to get debug infos, and
- * "-fomit-frame-pointer" is omitted to make debugging easier. Since the
- * resulting kernel will be quite big (approx. > 7 MB), it will be stripped
- * before compresion. Such a kernel will behave just as usually, except if
- * given a "debug=<device>" command line option. (Only serial devices are
- * allowed for <device>, i.e. no printers or the like; possible values are
- * machine depedend and are the same as for the usual debug device, the one
- * for logging kernel messages.) If that option is given and the device can be
- * initialized, the kernel will connect to the remote gdb in trap_init(). The
- * serial parameters are fixed to 8N1 and 115200 bps, for easyness of
- * implementation.
- *
- * To start a debugging session, start that gdb with the debugging kernel
- * image (the one with the symbols, vmlinux.debug) named on the command line.
- * This file will be used by gdb to get symbol and debugging infos about the
- * kernel. Next, select remote debug mode by
- * target remote <device>
- * where <device> is the name of the serial device over which the debugged
- * machine is connected. Maybe you have to adjust the baud rate by
- * set remotebaud <rate>
- * or also other parameters with stty:
- * shell stty ... </dev/...
- * If the kernel to debug has already booted, it waited for gdb and now
- * connects, and you'll see a breakpoint being reported. If the kernel isn't
- * running yet, start it now. The order of gdb and the kernel doesn't matter.
- * Another thing worth knowing about in the getting-started phase is how to
- * debug the remote protocol itself. This is activated with
- * set remotedebug 1
- * gdb will then print out each packet sent or received. You'll also get some
- * messages about the gdb stub on the console of the debugged machine.
- *
- * If all that works, you can use lots of the usual debugging techniques on
- * the kernel, e.g. inspecting and changing variables/memory, setting
- * breakpoints, single stepping and so on. It's also possible to interrupt the
- * debugged kernel by pressing C-c in gdb. Have fun! :-)
- *
- * The gdb stub is entered (and thus the remote gdb gets control) in the
- * following situations:
- *
- * - If breakpoint() is called. This is just after kgdb initialization, or if
- * a breakpoint() call has been put somewhere into the kernel source.
- * (Breakpoints can of course also be set the usual way in gdb.)
- * In eLinux, we call breakpoint() in init/main.c after IRQ initialization.
- *
- * - If there is a kernel exception, i.e. bad_super_trap() or die_if_kernel()
- * are entered. All the CPU exceptions are mapped to (more or less..., see
- * the hard_trap_info array below) appropriate signal, which are reported
- * to gdb. die_if_kernel() is usually called after some kind of access
- * error and thus is reported as SIGSEGV.
- *
- * - When panic() is called. This is reported as SIGABRT.
- *
- * - If C-c is received over the serial line, which is treated as
- * SIGINT.
- *
- * Of course, all these signals are just faked for gdb, since there is no
- * signal concept as such for the kernel. It also isn't possible --obviously--
- * to set signal handlers from inside gdb, or restart the kernel with a
- * signal.
- *
- * Current limitations:
- *
- * - While the kernel is stopped, interrupts are disabled for safety reasons
- * (i.e., variables not changing magically or the like). But this also
- * means that the clock isn't running anymore, and that interrupts from the
- * hardware may get lost/not be served in time. This can cause some device
- * errors...
- *
- * - When single-stepping, only one instruction of the current thread is
- * executed, but interrupts are allowed for that time and will be serviced
- * if pending. Be prepared for that.
- *
- * - All debugging happens in kernel virtual address space. There's no way to
- * access physical memory not mapped in kernel space, or to access user
- * space. A way to work around this is using get_user_long & Co. in gdb
- * expressions, but only for the current process.
- *
- * - Interrupting the kernel only works if interrupts are currently allowed,
- * and the interrupt of the serial line isn't blocked by some other means
- * (IPL too high, disabled, ...)
- *
- * - The gdb stub is currently not reentrant, i.e. errors that happen therein
- * (e.g. accessing invalid memory) may not be caught correctly. This could
- * be removed in future by introducing a stack of struct registers.
- *
- */
-
-/*
- * To enable debugger support, two things need to happen. One, a
- * call to kgdb_init() is necessary in order to allow any breakpoints
- * or error conditions to be properly intercepted and reported to gdb.
- * Two, a breakpoint needs to be generated to begin communication. This
- * is most easily accomplished by a call to breakpoint().
- *
- * The following gdb commands are supported:
- *
- * command function Return value
- *
- * g return the value of the CPU registers hex data or ENN
- * G set the value of the CPU registers OK or ENN
- *
- * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
- * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
- *
- * c Resume at current address SNN ( signal NN)
- * cAA..AA Continue at address AA..AA SNN
- *
- * s Step one instruction SNN
- * sAA..AA Step one instruction from AA..AA SNN
- *
- * k kill
- *
- * ? What was the last sigval ? SNN (signal NN)
- *
- * bBB..BB Set baud rate to BB..BB OK or BNN, then sets
- * baud rate
- *
- * All commands and responses are sent with a packet which includes a
- * checksum. A packet consists of
- *
- * $<packet info>#<checksum>.
- *
- * where
- * <packet info> :: <characters representing the command or response>
- * <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>>
- *
- * When a packet is received, it is first acknowledged with either '+' or '-'.
- * '+' indicates a successful transfer. '-' indicates a failed transfer.
- *
- * Example:
- *
- * Host: Reply:
- * $m0,10#2a +$00010203040506070809101112131415#42
- *
- */
-
-
-#include <linux/string.h>
-#include <linux/signal.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/linkage.h>
-#include <linux/reboot.h>
-
-#include <asm/setup.h>
-#include <asm/ptrace.h>
-
-#include <asm/irq.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/intr_vect_defs.h>
-#include <hwregs/ser_defs.h>
-
-/* From entry.S. */
-extern void gdb_handle_exception(void);
-/* From kgdb_asm.S. */
-extern void kgdb_handle_exception(void);
-
-static int kgdb_started = 0;
-
-/********************************* Register image ****************************/
-
-typedef
-struct register_image
-{
- /* Offset */
- unsigned int r0; /* 0x00 */
- unsigned int r1; /* 0x04 */
- unsigned int r2; /* 0x08 */
- unsigned int r3; /* 0x0C */
- unsigned int r4; /* 0x10 */
- unsigned int r5; /* 0x14 */
- unsigned int r6; /* 0x18 */
- unsigned int r7; /* 0x1C */
- unsigned int r8; /* 0x20; Frame pointer (if any) */
- unsigned int r9; /* 0x24 */
- unsigned int r10; /* 0x28 */
- unsigned int r11; /* 0x2C */
- unsigned int r12; /* 0x30 */
- unsigned int r13; /* 0x34 */
- unsigned int sp; /* 0x38; R14, Stack pointer */
- unsigned int acr; /* 0x3C; R15, Address calculation register. */
-
- unsigned char bz; /* 0x40; P0, 8-bit zero register */
- unsigned char vr; /* 0x41; P1, Version register (8-bit) */
- unsigned int pid; /* 0x42; P2, Process ID */
- unsigned char srs; /* 0x46; P3, Support register select (8-bit) */
- unsigned short wz; /* 0x47; P4, 16-bit zero register */
- unsigned int exs; /* 0x49; P5, Exception status */
- unsigned int eda; /* 0x4D; P6, Exception data address */
- unsigned int mof; /* 0x51; P7, Multiply overflow register */
- unsigned int dz; /* 0x55; P8, 32-bit zero register */
- unsigned int ebp; /* 0x59; P9, Exception base pointer */
- unsigned int erp; /* 0x5D; P10, Exception return pointer. Contains the PC we are interested in. */
- unsigned int srp; /* 0x61; P11, Subroutine return pointer */
- unsigned int nrp; /* 0x65; P12, NMI return pointer */
- unsigned int ccs; /* 0x69; P13, Condition code stack */
- unsigned int usp; /* 0x6D; P14, User mode stack pointer */
- unsigned int spc; /* 0x71; P15, Single step PC */
- unsigned int pc; /* 0x75; Pseudo register (for the most part set to ERP). */
-
-} registers;
-
-typedef
-struct bp_register_image
-{
- /* Support register bank 0. */
- unsigned int s0_0;
- unsigned int s1_0;
- unsigned int s2_0;
- unsigned int s3_0;
- unsigned int s4_0;
- unsigned int s5_0;
- unsigned int s6_0;
- unsigned int s7_0;
- unsigned int s8_0;
- unsigned int s9_0;
- unsigned int s10_0;
- unsigned int s11_0;
- unsigned int s12_0;
- unsigned int s13_0;
- unsigned int s14_0;
- unsigned int s15_0;
-
- /* Support register bank 1. */
- unsigned int s0_1;
- unsigned int s1_1;
- unsigned int s2_1;
- unsigned int s3_1;
- unsigned int s4_1;
- unsigned int s5_1;
- unsigned int s6_1;
- unsigned int s7_1;
- unsigned int s8_1;
- unsigned int s9_1;
- unsigned int s10_1;
- unsigned int s11_1;
- unsigned int s12_1;
- unsigned int s13_1;
- unsigned int s14_1;
- unsigned int s15_1;
-
- /* Support register bank 2. */
- unsigned int s0_2;
- unsigned int s1_2;
- unsigned int s2_2;
- unsigned int s3_2;
- unsigned int s4_2;
- unsigned int s5_2;
- unsigned int s6_2;
- unsigned int s7_2;
- unsigned int s8_2;
- unsigned int s9_2;
- unsigned int s10_2;
- unsigned int s11_2;
- unsigned int s12_2;
- unsigned int s13_2;
- unsigned int s14_2;
- unsigned int s15_2;
-
- /* Support register bank 3. */
- unsigned int s0_3; /* BP_CTRL */
- unsigned int s1_3; /* BP_I0_START */
- unsigned int s2_3; /* BP_I0_END */
- unsigned int s3_3; /* BP_D0_START */
- unsigned int s4_3; /* BP_D0_END */
- unsigned int s5_3; /* BP_D1_START */
- unsigned int s6_3; /* BP_D1_END */
- unsigned int s7_3; /* BP_D2_START */
- unsigned int s8_3; /* BP_D2_END */
- unsigned int s9_3; /* BP_D3_START */
- unsigned int s10_3; /* BP_D3_END */
- unsigned int s11_3; /* BP_D4_START */
- unsigned int s12_3; /* BP_D4_END */
- unsigned int s13_3; /* BP_D5_START */
- unsigned int s14_3; /* BP_D5_END */
- unsigned int s15_3; /* BP_RESERVED */
-
-} support_registers;
-
-enum register_name
-{
- R0, R1, R2, R3,
- R4, R5, R6, R7,
- R8, R9, R10, R11,
- R12, R13, SP, ACR,
-
- BZ, VR, PID, SRS,
- WZ, EXS, EDA, MOF,
- DZ, EBP, ERP, SRP,
- NRP, CCS, USP, SPC,
- PC,
-
- S0, S1, S2, S3,
- S4, S5, S6, S7,
- S8, S9, S10, S11,
- S12, S13, S14, S15
-
-};
-
-/* The register sizes of the registers in register_name. An unimplemented register
- is designated by size 0 in this array. */
-static int register_size[] =
-{
- 4, 4, 4, 4,
- 4, 4, 4, 4,
- 4, 4, 4, 4,
- 4, 4, 4, 4,
-
- 1, 1, 4, 1,
- 2, 4, 4, 4,
- 4, 4, 4, 4,
- 4, 4, 4, 4,
-
- 4,
-
- 4, 4, 4, 4,
- 4, 4, 4, 4,
- 4, 4, 4, 4,
- 4, 4, 4
-
-};
-
-/* Contains the register image of the kernel.
- (Global so that they can be reached from assembler code.) */
-registers reg;
-support_registers sreg;
-
-/************** Prototypes for local library functions ***********************/
-
-/* Copy of strcpy from libc. */
-static char *gdb_cris_strcpy(char *s1, const char *s2);
-
-/* Copy of strlen from libc. */
-static int gdb_cris_strlen(const char *s);
-
-/* Copy of memchr from libc. */
-static void *gdb_cris_memchr(const void *s, int c, int n);
-
-/* Copy of strtol from libc. Does only support base 16. */
-static int gdb_cris_strtol(const char *s, char **endptr, int base);
-
-/********************** Prototypes for local functions. **********************/
-
-/* Write a value to a specified register regno in the register image
- of the current thread. */
-static int write_register(int regno, char *val);
-
-/* Read a value from a specified register in the register image. Returns the
- status of the read operation. The register value is returned in valptr. */
-static int read_register(char regno, unsigned int *valptr);
-
-/* Serial port, reads one character. ETRAX 100 specific. from debugport.c */
-int getDebugChar(void);
-
-/* Serial port, writes one character. ETRAX 100 specific. from debugport.c */
-void putDebugChar(int val);
-
-/* Convert the memory, pointed to by mem into hexadecimal representation.
- Put the result in buf, and return a pointer to the last character
- in buf (null). */
-static char *mem2hex(char *buf, unsigned char *mem, int count);
-
-/* Put the content of the array, in binary representation, pointed to by buf
- into memory pointed to by mem, and return a pointer to
- the character after the last byte written. */
-static unsigned char *bin2mem(unsigned char *mem, unsigned char *buf, int count);
-
-/* Await the sequence $<data>#<checksum> and store <data> in the array buffer
- returned. */
-static void getpacket(char *buffer);
-
-/* Send $<data>#<checksum> from the <data> in the array buffer. */
-static void putpacket(char *buffer);
-
-/* Build and send a response packet in order to inform the host the
- stub is stopped. */
-static void stub_is_stopped(int sigval);
-
-/* All expected commands are sent from remote.c. Send a response according
- to the description in remote.c. Not static since it needs to be reached
- from assembler code. */
-void handle_exception(int sigval);
-
-/* Performs a complete re-start from scratch. ETRAX specific. */
-static void kill_restart(void);
-
-/******************** Prototypes for global functions. ***********************/
-
-/* The string str is prepended with the GDB printout token and sent. */
-void putDebugString(const unsigned char *str, int len);
-
-/* A static breakpoint to be used at startup. */
-void breakpoint(void);
-
-/* Avoid warning as the internal_stack is not used in the C-code. */
-#define USEDVAR(name) { if (name) { ; } }
-#define USEDFUN(name) { void (*pf)(void) = (void *)name; USEDVAR(pf) }
-
-/********************************** Packet I/O ******************************/
-/* BUFMAX defines the maximum number of characters in
- inbound/outbound buffers */
-/* FIXME: How do we know it's enough? */
-#define BUFMAX 512
-
-/* Run-length encoding maximum length. Send 64 at most. */
-#define RUNLENMAX 64
-
-/* The inbound/outbound buffers used in packet I/O */
-static char input_buffer[BUFMAX];
-static char output_buffer[BUFMAX];
-
-/* Error and warning messages. */
-enum error_type
-{
- SUCCESS, E01, E02, E03, E04, E05, E06, E07, E08
-};
-
-static char *error_message[] =
-{
- "",
- "E01 Set current or general thread - H[c,g] - internal error.",
- "E02 Change register content - P - cannot change read-only register.",
- "E03 Thread is not alive.", /* T, not used. */
- "E04 The command is not supported - [s,C,S,!,R,d,r] - internal error.",
- "E05 Change register content - P - the register is not implemented..",
- "E06 Change memory content - M - internal error.",
- "E07 Change register content - P - the register is not stored on the stack",
- "E08 Invalid parameter"
-};
-
-/********************************** Breakpoint *******************************/
-/* Use an internal stack in the breakpoint and interrupt response routines.
- FIXME: How do we know the size of this stack is enough?
- Global so it can be reached from assembler code. */
-#define INTERNAL_STACK_SIZE 1024
-char internal_stack[INTERNAL_STACK_SIZE];
-
-/* Due to the breakpoint return pointer, a state variable is needed to keep
- track of whether it is a static (compiled) or dynamic (gdb-invoked)
- breakpoint to be handled. A static breakpoint uses the content of register
- ERP as it is whereas a dynamic breakpoint requires subtraction with 2
- in order to execute the instruction. The first breakpoint is static; all
- following are assumed to be dynamic. */
-static int dynamic_bp = 0;
-
-/********************************* String library ****************************/
-/* Single-step over library functions creates trap loops. */
-
-/* Copy char s2[] to s1[]. */
-static char*
-gdb_cris_strcpy(char *s1, const char *s2)
-{
- char *s = s1;
-
- for (s = s1; (*s++ = *s2++) != '\0'; )
- ;
- return s1;
-}
-
-/* Find length of s[]. */
-static int
-gdb_cris_strlen(const char *s)
-{
- const char *sc;
-
- for (sc = s; *sc != '\0'; sc++)
- ;
- return (sc - s);
-}
-
-/* Find first occurrence of c in s[n]. */
-static void*
-gdb_cris_memchr(const void *s, int c, int n)
-{
- const unsigned char uc = c;
- const unsigned char *su;
-
- for (su = s; 0 < n; ++su, --n)
- if (*su == uc)
- return (void *)su;
- return NULL;
-}
-/******************************* Standard library ****************************/
-/* Single-step over library functions creates trap loops. */
-/* Convert string to long. */
-static int
-gdb_cris_strtol(const char *s, char **endptr, int base)
-{
- char *s1;
- char *sd;
- int x = 0;
-
- for (s1 = (char*)s; (sd = gdb_cris_memchr(hex_asc, *s1, base)) != NULL; ++s1)
- x = x * base + (sd - hex_asc);
-
- if (endptr) {
- /* Unconverted suffix is stored in endptr unless endptr is NULL. */
- *endptr = s1;
- }
-
- return x;
-}
-
-/********************************* Register image ****************************/
-
-/* Write a value to a specified register in the register image of the current
- thread. Returns status code SUCCESS, E02, E05 or E08. */
-static int
-write_register(int regno, char *val)
-{
- int status = SUCCESS;
-
- if (regno >= R0 && regno <= ACR) {
- /* Consecutive 32-bit registers. */
- if (hex2bin((unsigned char *)&reg.r0 + (regno - R0) * sizeof(unsigned int),
- val, sizeof(unsigned int)))
- status = E08;
-
- } else if (regno == BZ || regno == VR || regno == WZ || regno == DZ) {
- /* Read-only registers. */
- status = E02;
-
- } else if (regno == PID) {
- /* 32-bit register. (Even though we already checked SRS and WZ, we cannot
- combine this with the EXS - SPC write since SRS and WZ have different size.) */
- if (hex2bin((unsigned char *)&reg.pid, val, sizeof(unsigned int)))
- status = E08;
-
- } else if (regno == SRS) {
- /* 8-bit register. */
- if (hex2bin((unsigned char *)&reg.srs, val, sizeof(unsigned char)))
- status = E08;
-
- } else if (regno >= EXS && regno <= SPC) {
- /* Consecutive 32-bit registers. */
- if (hex2bin((unsigned char *)&reg.exs + (regno - EXS) * sizeof(unsigned int),
- val, sizeof(unsigned int)))
- status = E08;
-
- } else if (regno == PC) {
- /* Pseudo-register. Treat as read-only. */
- status = E02;
-
- } else if (regno >= S0 && regno <= S15) {
- /* 32-bit registers. */
- if (hex2bin((unsigned char *)&sreg.s0_0 + (reg.srs * 16 * sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int),
- val, sizeof(unsigned int)))
- status = E08;
- } else {
- /* Non-existing register. */
- status = E05;
- }
- return status;
-}
-
-/* Read a value from a specified register in the register image. Returns the
- value in the register or -1 for non-implemented registers. */
-static int
-read_register(char regno, unsigned int *valptr)
-{
- int status = SUCCESS;
-
- /* We read the zero registers from the register struct (instead of just returning 0)
- to catch errors. */
-
- if (regno >= R0 && regno <= ACR) {
- /* Consecutive 32-bit registers. */
- *valptr = *(unsigned int *)((char *)&reg.r0 + (regno - R0) * sizeof(unsigned int));
-
- } else if (regno == BZ || regno == VR) {
- /* Consecutive 8-bit registers. */
- *valptr = (unsigned int)(*(unsigned char *)
- ((char *)&reg.bz + (regno - BZ) * sizeof(char)));
-
- } else if (regno == PID) {
- /* 32-bit register. */
- *valptr = *(unsigned int *)((char *)&reg.pid);
-
- } else if (regno == SRS) {
- /* 8-bit register. */
- *valptr = (unsigned int)(*(unsigned char *)((char *)&reg.srs));
-
- } else if (regno == WZ) {
- /* 16-bit register. */
- *valptr = (unsigned int)(*(unsigned short *)(char *)&reg.wz);
-
- } else if (regno >= EXS && regno <= PC) {
- /* Consecutive 32-bit registers. */
- *valptr = *(unsigned int *)((char *)&reg.exs + (regno - EXS) * sizeof(unsigned int));
-
- } else if (regno >= S0 && regno <= S15) {
- /* Consecutive 32-bit registers, located elsewhere. */
- *valptr = *(unsigned int *)((char *)&sreg.s0_0 + (reg.srs * 16 * sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int));
-
- } else {
- /* Non-existing register. */
- status = E05;
- }
- return status;
-
-}
-
-/********************************** Packet I/O ******************************/
-/* Convert the memory, pointed to by mem into hexadecimal representation.
- Put the result in buf, and return a pointer to the last character
- in buf (null). */
-
-static char *
-mem2hex(char *buf, unsigned char *mem, int count)
-{
- int i;
- int ch;
-
- if (mem == NULL) {
- /* Invalid address, caught by 'm' packet handler. */
- for (i = 0; i < count; i++) {
- *buf++ = '0';
- *buf++ = '0';
- }
- } else {
- /* Valid mem address. */
- for (i = 0; i < count; i++) {
- ch = *mem++;
- buf = hex_byte_pack(buf, ch);
- }
- }
- /* Terminate properly. */
- *buf = '\0';
- return buf;
-}
-
-/* Same as mem2hex, but puts it in network byte order. */
-static char *
-mem2hex_nbo(char *buf, unsigned char *mem, int count)
-{
- int i;
- int ch;
-
- mem += count - 1;
- for (i = 0; i < count; i++) {
- ch = *mem--;
- buf = hex_byte_pack(buf, ch);
- }
-
- /* Terminate properly. */
- *buf = '\0';
- return buf;
-}
-
-/* Put the content of the array, in binary representation, pointed to by buf
- into memory pointed to by mem, and return a pointer to the character after
- the last byte written.
- Gdb will escape $, #, and the escape char (0x7d). */
-static unsigned char*
-bin2mem(unsigned char *mem, unsigned char *buf, int count)
-{
- int i;
- unsigned char *next;
- for (i = 0; i < count; i++) {
- /* Check for any escaped characters. Be paranoid and
- only unescape chars that should be escaped. */
- if (*buf == 0x7d) {
- next = buf + 1;
- if (*next == 0x3 || *next == 0x4 || *next == 0x5D) {
- /* #, $, ESC */
- buf++;
- *buf += 0x20;
- }
- }
- *mem++ = *buf++;
- }
- return mem;
-}
-
-/* Await the sequence $<data>#<checksum> and store <data> in the array buffer
- returned. */
-static void
-getpacket(char *buffer)
-{
- unsigned char checksum;
- unsigned char xmitcsum;
- int i;
- int count;
- char ch;
-
- do {
- while((ch = getDebugChar ()) != '$')
- /* Wait for the start character $ and ignore all other characters */;
- checksum = 0;
- xmitcsum = -1;
- count = 0;
- /* Read until a # or the end of the buffer is reached */
- while (count < BUFMAX) {
- ch = getDebugChar();
- if (ch == '#')
- break;
- checksum = checksum + ch;
- buffer[count] = ch;
- count = count + 1;
- }
-
- if (count >= BUFMAX)
- continue;
-
- buffer[count] = 0;
-
- if (ch == '#') {
- xmitcsum = hex_to_bin(getDebugChar()) << 4;
- xmitcsum += hex_to_bin(getDebugChar());
- if (checksum != xmitcsum) {
- /* Wrong checksum */
- putDebugChar('-');
- } else {
- /* Correct checksum */
- putDebugChar('+');
- /* If sequence characters are received, reply with them */
- if (buffer[2] == ':') {
- putDebugChar(buffer[0]);
- putDebugChar(buffer[1]);
- /* Remove the sequence characters from the buffer */
- count = gdb_cris_strlen(buffer);
- for (i = 3; i <= count; i++)
- buffer[i - 3] = buffer[i];
- }
- }
- }
- } while (checksum != xmitcsum);
-}
-
-/* Send $<data>#<checksum> from the <data> in the array buffer. */
-
-static void
-putpacket(char *buffer)
-{
- int checksum;
- int runlen;
- int encode;
-
- do {
- char *src = buffer;
- putDebugChar('$');
- checksum = 0;
- while (*src) {
- /* Do run length encoding */
- putDebugChar(*src);
- checksum += *src;
- runlen = 0;
- while (runlen < RUNLENMAX && *src == src[runlen]) {
- runlen++;
- }
- if (runlen > 3) {
- /* Got a useful amount */
- putDebugChar ('*');
- checksum += '*';
- encode = runlen + ' ' - 4;
- putDebugChar(encode);
- checksum += encode;
- src += runlen;
- } else {
- src++;
- }
- }
- putDebugChar('#');
- putDebugChar(hex_asc_hi(checksum));
- putDebugChar(hex_asc_lo(checksum));
- } while(kgdb_started && (getDebugChar() != '+'));
-}
-
-/* The string str is prepended with the GDB printout token and sent. Required
- in traditional implementations. */
-void
-putDebugString(const unsigned char *str, int len)
-{
- /* Move SPC forward if we are single-stepping. */
- asm("spchere:");
- asm("move $spc, $r10");
- asm("cmp.d spchere, $r10");
- asm("bne nosstep");
- asm("nop");
- asm("move.d spccont, $r10");
- asm("move $r10, $spc");
- asm("nosstep:");
-
- output_buffer[0] = 'O';
- mem2hex(&output_buffer[1], (unsigned char *)str, len);
- putpacket(output_buffer);
-
- asm("spccont:");
-}
-
-/********************************** Handle exceptions ************************/
-/* Build and send a response packet in order to inform the host the
- stub is stopped. TAAn...:r...;n...:r...;n...:r...;
- AA = signal number
- n... = register number (hex)
- r... = register contents
- n... = `thread'
- r... = thread process ID. This is a hex integer.
- n... = other string not starting with valid hex digit.
- gdb should ignore this n,r pair and go on to the next.
- This way we can extend the protocol. */
-static void
-stub_is_stopped(int sigval)
-{
- char *ptr = output_buffer;
- unsigned int reg_cont;
-
- /* Send trap type (converted to signal) */
-
- *ptr++ = 'T';
- ptr = hex_byte_pack(ptr, sigval);
-
- if (((reg.exs & 0xff00) >> 8) == 0xc) {
-
- /* Some kind of hardware watchpoint triggered. Find which one
- and determine its type (read/write/access). */
- int S, bp, trig_bits = 0, rw_bits = 0;
- int trig_mask = 0;
- unsigned int *bp_d_regs = &sreg.s3_3;
- /* In a lot of cases, the stopped data address will simply be EDA.
- In some cases, we adjust it to match the watched data range.
- (We don't want to change the actual EDA though). */
- unsigned int stopped_data_address;
- /* The S field of EXS. */
- S = (reg.exs & 0xffff0000) >> 16;
-
- if (S & 1) {
- /* Instruction watchpoint. */
- /* FIXME: Check against, and possibly adjust reported EDA. */
- } else {
- /* Data watchpoint. Find the one that triggered. */
- for (bp = 0; bp < 6; bp++) {
-
- /* Dx_RD, Dx_WR in the S field of EXS for this BP. */
- int bitpos_trig = 1 + bp * 2;
- /* Dx_BPRD, Dx_BPWR in BP_CTRL for this BP. */
- int bitpos_config = 2 + bp * 4;
-
- /* Get read/write trig bits for this BP. */
- trig_bits = (S & (3 << bitpos_trig)) >> bitpos_trig;
-
- /* Read/write config bits for this BP. */
- rw_bits = (sreg.s0_3 & (3 << bitpos_config)) >> bitpos_config;
- if (trig_bits) {
- /* Sanity check: the BP shouldn't trigger for accesses
- that it isn't configured for. */
- if ((rw_bits == 0x1 && trig_bits != 0x1) ||
- (rw_bits == 0x2 && trig_bits != 0x2))
- panic("Invalid r/w trigging for this BP");
-
- /* Mark this BP as trigged for future reference. */
- trig_mask |= (1 << bp);
-
- if (reg.eda >= bp_d_regs[bp * 2] &&
- reg.eda <= bp_d_regs[bp * 2 + 1]) {
- /* EDA within range for this BP; it must be the one
- we're looking for. */
- stopped_data_address = reg.eda;
- break;
- }
- }
- }
- if (bp < 6) {
- /* Found a trigged BP with EDA within its configured data range. */
- } else if (trig_mask) {
- /* Something triggered, but EDA doesn't match any BP's range. */
- for (bp = 0; bp < 6; bp++) {
- /* Dx_BPRD, Dx_BPWR in BP_CTRL for this BP. */
- int bitpos_config = 2 + bp * 4;
-
- /* Read/write config bits for this BP (needed later). */
- rw_bits = (sreg.s0_3 & (3 << bitpos_config)) >> bitpos_config;
-
- if (trig_mask & (1 << bp)) {
- /* EDA within 31 bytes of the configured start address? */
- if (reg.eda + 31 >= bp_d_regs[bp * 2]) {
- /* Changing the reported address to match
- the start address of the first applicable BP. */
- stopped_data_address = bp_d_regs[bp * 2];
- break;
- } else {
- /* We continue since we might find another useful BP. */
- printk("EDA doesn't match trigged BP's range");
- }
- }
- }
- }
-
- /* No match yet? */
- BUG_ON(bp >= 6);
- /* Note that we report the type according to what the BP is configured
- for (otherwise we'd never report an 'awatch'), not according to how
- it trigged. We did check that the trigged bits match what the BP is
- configured for though. */
- if (rw_bits == 0x1) {
- /* read */
- strncpy(ptr, "rwatch", 6);
- ptr += 6;
- } else if (rw_bits == 0x2) {
- /* write */
- strncpy(ptr, "watch", 5);
- ptr += 5;
- } else if (rw_bits == 0x3) {
- /* access */
- strncpy(ptr, "awatch", 6);
- ptr += 6;
- } else {
- panic("Invalid r/w bits for this BP.");
- }
-
- *ptr++ = ':';
- /* Note that we don't read_register(EDA, ...) */
- ptr = mem2hex_nbo(ptr, (unsigned char *)&stopped_data_address, register_size[EDA]);
- *ptr++ = ';';
- }
- }
- /* Only send PC, frame and stack pointer. */
- read_register(PC, &reg_cont);
- ptr = hex_byte_pack(ptr, PC);
- *ptr++ = ':';
- ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[PC]);
- *ptr++ = ';';
-
- read_register(R8, &reg_cont);
- ptr = hex_byte_pack(ptr, R8);
- *ptr++ = ':';
- ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[R8]);
- *ptr++ = ';';
-
- read_register(SP, &reg_cont);
- ptr = hex_byte_pack(ptr, SP);
- *ptr++ = ':';
- ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[SP]);
- *ptr++ = ';';
-
- /* Send ERP as well; this will save us an entire register fetch in some cases. */
- read_register(ERP, &reg_cont);
- ptr = hex_byte_pack(ptr, ERP);
- *ptr++ = ':';
- ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[ERP]);
- *ptr++ = ';';
-
- /* null-terminate and send it off */
- *ptr = 0;
- putpacket(output_buffer);
-}
-
-/* Returns the size of an instruction that has a delay slot. */
-
-int insn_size(unsigned long pc)
-{
- unsigned short opcode = *(unsigned short *)pc;
- int size = 0;
-
- switch ((opcode & 0x0f00) >> 8) {
- case 0x0:
- case 0x9:
- case 0xb:
- size = 2;
- break;
- case 0xe:
- case 0xf:
- size = 6;
- break;
- case 0xd:
- /* Could be 4 or 6; check more bits. */
- if ((opcode & 0xff) == 0xff)
- size = 4;
- else
- size = 6;
- break;
- default:
- panic("Couldn't find size of opcode 0x%x at 0x%lx\n", opcode, pc);
- }
-
- return size;
-}
-
-void register_fixup(int sigval)
-{
- /* Compensate for ACR push at the beginning of exception handler. */
- reg.sp += 4;
-
- /* Standard case. */
- reg.pc = reg.erp;
- if (reg.erp & 0x1) {
- /* Delay slot bit set. Report as stopped on proper instruction. */
- if (reg.spc) {
- /* Rely on SPC if set. */
- reg.pc = reg.spc;
- } else {
- /* Calculate the PC from the size of the instruction
- that the delay slot we're in belongs to. */
- reg.pc += insn_size(reg.erp & ~1) - 1 ;
- }
- }
-
- if ((reg.exs & 0x3) == 0x0) {
- /* Bits 1 - 0 indicate the type of memory operation performed
- by the interrupted instruction. 0 means no memory operation,
- and EDA is undefined in that case. We zero it to avoid confusion. */
- reg.eda = 0;
- }
-
- if (sigval == SIGTRAP) {
- /* Break 8, single step or hardware breakpoint exception. */
-
- /* Check IDX field of EXS. */
- if (((reg.exs & 0xff00) >> 8) == 0x18) {
-
- /* Break 8. */
-
- /* Static (compiled) breakpoints must return to the next instruction
- in order to avoid infinite loops (default value of ERP). Dynamic
- (gdb-invoked) must subtract the size of the break instruction from
- the ERP so that the instruction that was originally in the break
- instruction's place will be run when we return from the exception. */
- if (!dynamic_bp) {
- /* Assuming that all breakpoints are dynamic from now on. */
- dynamic_bp = 1;
- } else {
-
- /* Only if not in a delay slot. */
- if (!(reg.erp & 0x1)) {
- reg.erp -= 2;
- reg.pc -= 2;
- }
- }
-
- } else if (((reg.exs & 0xff00) >> 8) == 0x3) {
- /* Single step. */
- /* Don't fiddle with S1. */
-
- } else if (((reg.exs & 0xff00) >> 8) == 0xc) {
-
- /* Hardware watchpoint exception. */
-
- /* SPC has been updated so that we will get a single step exception
- when we return, but we don't want that. */
- reg.spc = 0;
-
- /* Don't fiddle with S1. */
- }
-
- } else if (sigval == SIGINT) {
- /* Nothing special. */
- }
-}
-
-static void insert_watchpoint(char type, int addr, int len)
-{
- /* Breakpoint/watchpoint types (GDB terminology):
- 0 = memory breakpoint for instructions
- (not supported; done via memory write instead)
- 1 = hardware breakpoint for instructions (supported)
- 2 = write watchpoint (supported)
- 3 = read watchpoint (supported)
- 4 = access watchpoint (supported) */
-
- if (type < '1' || type > '4') {
- output_buffer[0] = 0;
- return;
- }
-
- /* Read watchpoints are set as access watchpoints, because of GDB's
- inability to deal with pure read watchpoints. */
- if (type == '3')
- type = '4';
-
- if (type == '1') {
- /* Hardware (instruction) breakpoint. */
- /* Bit 0 in BP_CTRL holds the configuration for I0. */
- if (sreg.s0_3 & 0x1) {
- /* Already in use. */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- return;
- }
- /* Configure. */
- sreg.s1_3 = addr;
- sreg.s2_3 = (addr + len - 1);
- sreg.s0_3 |= 1;
- } else {
- int bp;
- unsigned int *bp_d_regs = &sreg.s3_3;
-
- /* The watchpoint allocation scheme is the simplest possible.
- For example, if a region is watched for read and
- a write watch is requested, a new watchpoint will
- be used. Also, if a watch for a region that is already
- covered by one or more existing watchpoints, a new
- watchpoint will be used. */
-
- /* First, find a free data watchpoint. */
- for (bp = 0; bp < 6; bp++) {
- /* Each data watchpoint's control registers occupy 2 bits
- (hence the 3), starting at bit 2 for D0 (hence the 2)
- with 4 bits between for each watchpoint (yes, the 4). */
- if (!(sreg.s0_3 & (0x3 << (2 + (bp * 4))))) {
- break;
- }
- }
-
- if (bp > 5) {
- /* We're out of watchpoints. */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- return;
- }
-
- /* Configure the control register first. */
- if (type == '3' || type == '4') {
- /* Trigger on read. */
- sreg.s0_3 |= (1 << (2 + bp * 4));
- }
- if (type == '2' || type == '4') {
- /* Trigger on write. */
- sreg.s0_3 |= (2 << (2 + bp * 4));
- }
-
- /* Ugly pointer arithmetics to configure the watched range. */
- bp_d_regs[bp * 2] = addr;
- bp_d_regs[bp * 2 + 1] = (addr + len - 1);
- }
-
- /* Set the S1 flag to enable watchpoints. */
- reg.ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
- gdb_cris_strcpy(output_buffer, "OK");
-}
-
-static void remove_watchpoint(char type, int addr, int len)
-{
- /* Breakpoint/watchpoint types:
- 0 = memory breakpoint for instructions
- (not supported; done via memory write instead)
- 1 = hardware breakpoint for instructions (supported)
- 2 = write watchpoint (supported)
- 3 = read watchpoint (supported)
- 4 = access watchpoint (supported) */
- if (type < '1' || type > '4') {
- output_buffer[0] = 0;
- return;
- }
-
- /* Read watchpoints are set as access watchpoints, because of GDB's
- inability to deal with pure read watchpoints. */
- if (type == '3')
- type = '4';
-
- if (type == '1') {
- /* Hardware breakpoint. */
- /* Bit 0 in BP_CTRL holds the configuration for I0. */
- if (!(sreg.s0_3 & 0x1)) {
- /* Not in use. */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- return;
- }
- /* Deconfigure. */
- sreg.s1_3 = 0;
- sreg.s2_3 = 0;
- sreg.s0_3 &= ~1;
- } else {
- int bp;
- unsigned int *bp_d_regs = &sreg.s3_3;
- /* Try to find a watchpoint that is configured for the
- specified range, then check that read/write also matches. */
-
- /* Ugly pointer arithmetic, since I cannot rely on a
- single switch (addr) as there may be several watchpoints with
- the same start address for example. */
-
- for (bp = 0; bp < 6; bp++) {
- if (bp_d_regs[bp * 2] == addr &&
- bp_d_regs[bp * 2 + 1] == (addr + len - 1)) {
- /* Matching range. */
- int bitpos = 2 + bp * 4;
- int rw_bits;
-
- /* Read/write bits for this BP. */
- rw_bits = (sreg.s0_3 & (0x3 << bitpos)) >> bitpos;
-
- if ((type == '3' && rw_bits == 0x1) ||
- (type == '2' && rw_bits == 0x2) ||
- (type == '4' && rw_bits == 0x3)) {
- /* Read/write matched. */
- break;
- }
- }
- }
-
- if (bp > 5) {
- /* No watchpoint matched. */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- return;
- }
-
- /* Found a matching watchpoint. Now, deconfigure it by
- both disabling read/write in bp_ctrl and zeroing its
- start/end addresses. */
- sreg.s0_3 &= ~(3 << (2 + (bp * 4)));
- bp_d_regs[bp * 2] = 0;
- bp_d_regs[bp * 2 + 1] = 0;
- }
-
- /* Note that we don't clear the S1 flag here. It's done when continuing. */
- gdb_cris_strcpy(output_buffer, "OK");
-}
-
-
-
-/* All expected commands are sent from remote.c. Send a response according
- to the description in remote.c. */
-void
-handle_exception(int sigval)
-{
- /* Avoid warning of not used. */
-
- USEDFUN(handle_exception);
- USEDVAR(internal_stack[0]);
-
- register_fixup(sigval);
-
- /* Send response. */
- stub_is_stopped(sigval);
-
- for (;;) {
- output_buffer[0] = '\0';
- getpacket(input_buffer);
- switch (input_buffer[0]) {
- case 'g':
- /* Read registers: g
- Success: Each byte of register data is described by two hex digits.
- Registers are in the internal order for GDB, and the bytes
- in a register are in the same order the machine uses.
- Failure: void. */
- {
- char *buf;
- /* General and special registers. */
- buf = mem2hex(output_buffer, (char *)&reg, sizeof(registers));
- /* Support registers. */
- /* -1 because of the null termination that mem2hex adds. */
- mem2hex(buf,
- (char *)&sreg + (reg.srs * 16 * sizeof(unsigned int)),
- 16 * sizeof(unsigned int));
- break;
- }
- case 'G':
- /* Write registers. GXX..XX
- Each byte of register data is described by two hex digits.
- Success: OK
- Failure: E08. */
- /* General and special registers. */
- if (hex2bin((char *)&reg, &input_buffer[1], sizeof(registers)))
- gdb_cris_strcpy(output_buffer, error_message[E08]);
- /* Support registers. */
- else if (hex2bin((char *)&sreg + (reg.srs * 16 * sizeof(unsigned int)),
- &input_buffer[1] + sizeof(registers),
- 16 * sizeof(unsigned int)))
- gdb_cris_strcpy(output_buffer, error_message[E08]);
- else
- gdb_cris_strcpy(output_buffer, "OK");
- break;
-
- case 'P':
- /* Write register. Pn...=r...
- Write register n..., hex value without 0x, with value r...,
- which contains a hex value without 0x and two hex digits
- for each byte in the register (target byte order). P1f=11223344 means
- set register 31 to 44332211.
- Success: OK
- Failure: E02, E05 */
- {
- char *suffix;
- int regno = gdb_cris_strtol(&input_buffer[1], &suffix, 16);
- int status;
-
- status = write_register(regno, suffix+1);
-
- switch (status) {
- case E02:
- /* Do not support read-only registers. */
- gdb_cris_strcpy(output_buffer, error_message[E02]);
- break;
- case E05:
- /* Do not support non-existing registers. */
- gdb_cris_strcpy(output_buffer, error_message[E05]);
- break;
- case E08:
- /* Invalid parameter. */
- gdb_cris_strcpy(output_buffer, error_message[E08]);
- break;
- default:
- /* Valid register number. */
- gdb_cris_strcpy(output_buffer, "OK");
- break;
- }
- }
- break;
-
- case 'm':
- /* Read from memory. mAA..AA,LLLL
- AA..AA is the address and LLLL is the length.
- Success: XX..XX is the memory content. Can be fewer bytes than
- requested if only part of the data may be read. m6000120a,6c means
- retrieve 108 byte from base address 6000120a.
- Failure: void. */
- {
- char *suffix;
- unsigned char *addr = (unsigned char *)gdb_cris_strtol(&input_buffer[1],
- &suffix, 16);
- int len = gdb_cris_strtol(suffix+1, 0, 16);
-
- /* Bogus read (i.e. outside the kernel's
- segment)? . */
- if (!((unsigned int)addr >= 0xc0000000 &&
- (unsigned int)addr < 0xd0000000))
- addr = NULL;
-
- mem2hex(output_buffer, addr, len);
- }
- break;
-
- case 'X':
- /* Write to memory. XAA..AA,LLLL:XX..XX
- AA..AA is the start address, LLLL is the number of bytes, and
- XX..XX is the binary data.
- Success: OK
- Failure: void. */
- case 'M':
- /* Write to memory. MAA..AA,LLLL:XX..XX
- AA..AA is the start address, LLLL is the number of bytes, and
- XX..XX is the hexadecimal data.
- Success: OK
- Failure: E08. */
- {
- char *lenptr;
- char *dataptr;
- unsigned char *addr = (unsigned char *)gdb_cris_strtol(&input_buffer[1],
- &lenptr, 16);
- int len = gdb_cris_strtol(lenptr+1, &dataptr, 16);
- if (*lenptr == ',' && *dataptr == ':') {
- if (input_buffer[0] == 'M') {
- if (hex2bin(addr, dataptr + 1, len))
- gdb_cris_strcpy(output_buffer, error_message[E08]);
- else
- gdb_cris_strcpy(output_buffer, "OK");
- } else /* X */ {
- bin2mem(addr, dataptr + 1, len);
- gdb_cris_strcpy(output_buffer, "OK");
- }
- } else {
- gdb_cris_strcpy(output_buffer, error_message[E06]);
- }
- }
- break;
-
- case 'c':
- /* Continue execution. cAA..AA
- AA..AA is the address where execution is resumed. If AA..AA is
- omitted, resume at the present address.
- Success: return to the executing thread.
- Failure: will never know. */
-
- if (input_buffer[1] != '\0') {
- /* FIXME: Doesn't handle address argument. */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- break;
- }
-
- /* Before continuing, make sure everything is set up correctly. */
-
- /* Set the SPC to some unlikely value. */
- reg.spc = 0;
- /* Set the S1 flag to 0 unless some watchpoint is enabled (since setting
- S1 to 0 would also disable watchpoints). (Note that bits 26-31 in BP_CTRL
- are reserved, so don't check against those). */
- if ((sreg.s0_3 & 0x3fff) == 0) {
- reg.ccs &= ~(1 << (S_CCS_BITNR + CCS_SHIFT));
- }
-
- return;
-
- case 's':
- /* Step. sAA..AA
- AA..AA is the address where execution is resumed. If AA..AA is
- omitted, resume at the present address. Success: return to the
- executing thread. Failure: will never know. */
-
- if (input_buffer[1] != '\0') {
- /* FIXME: Doesn't handle address argument. */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- break;
- }
-
- /* Set the SPC to PC, which is where we'll return
- (deduced previously). */
- reg.spc = reg.pc;
-
- /* Set the S1 (first stacked, not current) flag, which will
- kick into action when we rfe. */
- reg.ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
- return;
-
- case 'Z':
-
- /* Insert breakpoint or watchpoint, Ztype,addr,length.
- Remote protocol says: A remote target shall return an empty string
- for an unrecognized breakpoint or watchpoint packet type. */
- {
- char *lenptr;
- char *dataptr;
- int addr = gdb_cris_strtol(&input_buffer[3], &lenptr, 16);
- int len = gdb_cris_strtol(lenptr + 1, &dataptr, 16);
- char type = input_buffer[1];
-
- insert_watchpoint(type, addr, len);
- break;
- }
-
- case 'z':
- /* Remove breakpoint or watchpoint, Ztype,addr,length.
- Remote protocol says: A remote target shall return an empty string
- for an unrecognized breakpoint or watchpoint packet type. */
- {
- char *lenptr;
- char *dataptr;
- int addr = gdb_cris_strtol(&input_buffer[3], &lenptr, 16);
- int len = gdb_cris_strtol(lenptr + 1, &dataptr, 16);
- char type = input_buffer[1];
-
- remove_watchpoint(type, addr, len);
- break;
- }
-
-
- case '?':
- /* The last signal which caused a stop. ?
- Success: SAA, where AA is the signal number.
- Failure: void. */
- output_buffer[0] = 'S';
- output_buffer[1] = hex_asc_hi(sigval);
- output_buffer[2] = hex_asc_lo(sigval);
- output_buffer[3] = 0;
- break;
-
- case 'D':
- /* Detach from host. D
- Success: OK, and return to the executing thread.
- Failure: will never know */
- putpacket("OK");
- return;
-
- case 'k':
- case 'r':
- /* kill request or reset request.
- Success: restart of target.
- Failure: will never know. */
- kill_restart();
- break;
-
- case 'C':
- case 'S':
- case '!':
- case 'R':
- case 'd':
- /* Continue with signal sig. Csig;AA..AA
- Step with signal sig. Ssig;AA..AA
- Use the extended remote protocol. !
- Restart the target system. R0
- Toggle debug flag. d
- Search backwards. tAA:PP,MM
- Not supported: E04 */
-
- /* FIXME: What's the difference between not supported
- and ignored (below)? */
- gdb_cris_strcpy(output_buffer, error_message[E04]);
- break;
-
- default:
- /* The stub should ignore other request and send an empty
- response ($#<checksum>). This way we can extend the protocol and GDB
- can tell whether the stub it is talking to uses the old or the new. */
- output_buffer[0] = 0;
- break;
- }
- putpacket(output_buffer);
- }
-}
-
-void
-kgdb_init(void)
-{
- reg_intr_vect_rw_mask intr_mask;
- reg_ser_rw_intr_mask ser_intr_mask;
-
- /* Configure the kgdb serial port. */
-#if defined(CONFIG_ETRAX_KGDB_PORT0)
- /* Note: no shortcut registered (not handled by multiple_interrupt).
- See entry.S. */
- set_exception_vector(SER0_INTR_VECT, kgdb_handle_exception);
- /* Enable the ser irq in the global config. */
- intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
- intr_mask.ser0 = 1;
- REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
-
- ser_intr_mask = REG_RD(ser, regi_ser0, rw_intr_mask);
- ser_intr_mask.dav = regk_ser_yes;
- REG_WR(ser, regi_ser0, rw_intr_mask, ser_intr_mask);
-#elif defined(CONFIG_ETRAX_KGDB_PORT1)
- /* Note: no shortcut registered (not handled by multiple_interrupt).
- See entry.S. */
- set_exception_vector(SER1_INTR_VECT, kgdb_handle_exception);
- /* Enable the ser irq in the global config. */
- intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
- intr_mask.ser1 = 1;
- REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
-
- ser_intr_mask = REG_RD(ser, regi_ser1, rw_intr_mask);
- ser_intr_mask.dav = regk_ser_yes;
- REG_WR(ser, regi_ser1, rw_intr_mask, ser_intr_mask);
-#elif defined(CONFIG_ETRAX_KGDB_PORT2)
- /* Note: no shortcut registered (not handled by multiple_interrupt).
- See entry.S. */
- set_exception_vector(SER2_INTR_VECT, kgdb_handle_exception);
- /* Enable the ser irq in the global config. */
- intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
- intr_mask.ser2 = 1;
- REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
-
- ser_intr_mask = REG_RD(ser, regi_ser2, rw_intr_mask);
- ser_intr_mask.dav = regk_ser_yes;
- REG_WR(ser, regi_ser2, rw_intr_mask, ser_intr_mask);
-#elif defined(CONFIG_ETRAX_KGDB_PORT3)
- /* Note: no shortcut registered (not handled by multiple_interrupt).
- See entry.S. */
- set_exception_vector(SER3_INTR_VECT, kgdb_handle_exception);
- /* Enable the ser irq in the global config. */
- intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
- intr_mask.ser3 = 1;
- REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
-
- ser_intr_mask = REG_RD(ser, regi_ser3, rw_intr_mask);
- ser_intr_mask.dav = regk_ser_yes;
- REG_WR(ser, regi_ser3, rw_intr_mask, ser_intr_mask);
-#endif
-
-}
-/* Performs a complete re-start from scratch. */
-static void
-kill_restart(void)
-{
- machine_restart("");
-}
-
-/* Use this static breakpoint in the start-up only. */
-
-void
-breakpoint(void)
-{
- kgdb_started = 1;
- dynamic_bp = 0; /* This is a static, not a dynamic breakpoint. */
- __asm__ volatile ("break 8"); /* Jump to kgdb_handle_breakpoint. */
-}
-
-/****************************** End of file **********************************/
diff --git a/arch/cris/arch-v32/kernel/kgdb_asm.S b/arch/cris/arch-v32/kernel/kgdb_asm.S
deleted file mode 100644
index c26ea6b0e334..000000000000
--- a/arch/cris/arch-v32/kernel/kgdb_asm.S
+++ /dev/null
@@ -1,552 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2004 Axis Communications AB
- *
- * Code for handling break 8, hardware breakpoint, single step, and serial
- * port exceptions for kernel debugging purposes.
- */
-
-#include <hwregs/intr_vect.h>
-
- ;; Exported functions.
- .globl kgdb_handle_exception
-
-kgdb_handle_exception:
-
-;; Create a register image of the caller.
-;;
-;; First of all, save the ACR on the stack since we need it for address calculations.
-;; We put it into the register struct later.
-
- subq 4, $sp
- move.d $acr, [$sp]
-
-;; Now we are free to use ACR all we want.
-;; If we were running this handler with interrupts on, we would have to be careful
-;; to save and restore CCS manually, but since we aren't we treat it like every other
-;; register.
-
- move.d reg, $acr
- move.d $r0, [$acr] ; Save R0 (start of register struct)
- addq 4, $acr
- move.d $r1, [$acr] ; Save R1
- addq 4, $acr
- move.d $r2, [$acr] ; Save R2
- addq 4, $acr
- move.d $r3, [$acr] ; Save R3
- addq 4, $acr
- move.d $r4, [$acr] ; Save R4
- addq 4, $acr
- move.d $r5, [$acr] ; Save R5
- addq 4, $acr
- move.d $r6, [$acr] ; Save R6
- addq 4, $acr
- move.d $r7, [$acr] ; Save R7
- addq 4, $acr
- move.d $r8, [$acr] ; Save R8
- addq 4, $acr
- move.d $r9, [$acr] ; Save R9
- addq 4, $acr
- move.d $r10, [$acr] ; Save R10
- addq 4, $acr
- move.d $r11, [$acr] ; Save R11
- addq 4, $acr
- move.d $r12, [$acr] ; Save R12
- addq 4, $acr
- move.d $r13, [$acr] ; Save R13
- addq 4, $acr
- move.d $sp, [$acr] ; Save SP (R14)
- addq 4, $acr
-
- ;; The ACR register is already saved on the stack, so pop it from there.
- move.d [$sp],$r0
- move.d $r0, [$acr]
- addq 4, $acr
-
- move $bz, [$acr]
- addq 1, $acr
- move $vr, [$acr]
- addq 1, $acr
- move $pid, [$acr]
- addq 4, $acr
- move $srs, [$acr]
- addq 1, $acr
- move $wz, [$acr]
- addq 2, $acr
- move $exs, [$acr]
- addq 4, $acr
- move $eda, [$acr]
- addq 4, $acr
- move $mof, [$acr]
- addq 4, $acr
- move $dz, [$acr]
- addq 4, $acr
- move $ebp, [$acr]
- addq 4, $acr
- move $erp, [$acr]
- addq 4, $acr
- move $srp, [$acr]
- addq 4, $acr
- move $nrp, [$acr]
- addq 4, $acr
- move $ccs, [$acr]
- addq 4, $acr
- move $usp, [$acr]
- addq 4, $acr
- move $spc, [$acr]
- addq 4, $acr
-
-;; Skip the pseudo-PC.
- addq 4, $acr
-
-;; Save the support registers in bank 0 - 3.
- clear.d $r1 ; Bank counter
- move.d sreg, $acr
-
-;; Bank 0
- move $r1, $srs
- nop
- nop
- nop
- move $s0, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s1, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s2, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s3, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s4, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s5, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s6, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s7, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s8, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s9, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s10, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s11, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s12, $r0
- move.d $r0, [$acr]
- addq 4, $acr
-
- ;; Nothing in S13 - S15, bank 0
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
-
-;; Bank 1 and bank 2 have the same layout, hence the loop.
- addq 1, $r1
-1:
- move $r1, $srs
- nop
- nop
- nop
- move $s0, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s1, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s2, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s3, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s4, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s5, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s6, $r0
- move.d $r0, [$acr]
- addq 4, $acr
-
- ;; Nothing in S7 - S15, bank 1 and 2
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
- clear.d [$acr]
- addq 4, $acr
-
- addq 1, $r1
- cmpq 3, $r1
- bne 1b
- nop
-
-;; Bank 3
- move $r1, $srs
- nop
- nop
- nop
- move $s0, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s1, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s2, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s3, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s4, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s5, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s6, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s7, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s8, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s9, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s10, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s11, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s12, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s13, $r0
- move.d $r0, [$acr]
- addq 4, $acr
- move $s14, $r0
- move.d $r0, [$acr]
- addq 4, $acr
-;; Nothing in S15, bank 3
- clear.d [$acr]
- addq 4, $acr
-
-;; Check what got us here: get IDX field of EXS.
- move $exs, $r10
- and.d 0xff00, $r10
- lsrq 8, $r10
-#if defined(CONFIG_ETRAX_KGDB_PORT0)
- cmp.d SER0_INTR_VECT, $r10 ; IRQ for serial port 0
- beq sigint
- nop
-#elif defined(CONFIG_ETRAX_KGDB_PORT1)
- cmp.d SER1_INTR_VECT, $r10 ; IRQ for serial port 1
- beq sigint
- nop
-#elif defined(CONFIG_ETRAX_KGDB_PORT2)
- cmp.d SER2_INTR_VECT, $r10 ; IRQ for serial port 2
- beq sigint
- nop
-#elif defined(CONFIG_ETRAX_KGDB_PORT3)
- cmp.d SER3_INTR_VECT, $r10 ; IRQ for serial port 3
- beq sigint
- nop
-#endif
-;; Multiple interrupt must be due to serial break.
- cmp.d 0x30, $r10 ; Multiple interrupt
- beq sigint
- nop
-;; Neither of those? Then it's a sigtrap.
- ba handle_comm
- moveq 5, $r10 ; Set SIGTRAP (delay slot)
-
-sigint:
- ;; Serial interrupt; get character
- jsr getDebugChar
- nop ; Delay slot
- cmp.b 3, $r10 ; \003 (Ctrl-C)?
- bne return ; No, get out of here
- nop
- moveq 2, $r10 ; Set SIGINT
-
-;;
-;; Handle the communication
-;;
-handle_comm:
- move.d internal_stack+1020, $sp ; Use the internal stack which grows upwards
- jsr handle_exception ; Interactive routine
- nop
-
-;;
-;; Return to the caller
-;;
-return:
-
-;; First of all, write the support registers.
- clear.d $r1 ; Bank counter
- move.d sreg, $acr
-
-;; Bank 0
- move $r1, $srs
- nop
- nop
- nop
- move.d [$acr], $r0
- move $r0, $s0
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s1
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s2
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s3
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s4
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s5
- addq 4, $acr
-
-;; Nothing in S6 - S7, bank 0.
- addq 4, $acr
- addq 4, $acr
-
- move.d [$acr], $r0
- move $r0, $s8
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s9
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s10
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s11
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s12
- addq 4, $acr
-
-;; Nothing in S13 - S15, bank 0
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
-
-;; Bank 1 and bank 2 have the same layout, hence the loop.
- addq 1, $r1
-2:
- move $r1, $srs
- nop
- nop
- nop
- move.d [$acr], $r0
- move $r0, $s0
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s1
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s2
- addq 4, $acr
-
-;; S3 (MM_CAUSE) is read-only.
- addq 4, $acr
-
- move.d [$acr], $r0
- move $r0, $s4
- addq 4, $acr
-
-;; FIXME: Actually write S5/S6? (Affects MM_CAUSE.)
- addq 4, $acr
- addq 4, $acr
-
-;; Nothing in S7 - S15, bank 1 and 2
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
- addq 4, $acr
-
- addq 1, $r1
- cmpq 3, $r1
- bne 2b
- nop
-
-;; Bank 3
- move $r1, $srs
- nop
- nop
- nop
- move.d [$acr], $r0
- move $r0, $s0
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s1
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s2
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s3
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s4
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s5
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s6
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s7
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s8
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s9
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s10
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s11
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s12
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s13
- addq 4, $acr
- move.d [$acr], $r0
- move $r0, $s14
- addq 4, $acr
-
-;; Nothing in S15, bank 3
- addq 4, $acr
-
-;; Now, move on to the regular register restoration process.
-
- move.d reg, $acr ; Reset ACR to point at the beginning of the register image
- move.d [$acr], $r0 ; Restore R0
- addq 4, $acr
- move.d [$acr], $r1 ; Restore R1
- addq 4, $acr
- move.d [$acr], $r2 ; Restore R2
- addq 4, $acr
- move.d [$acr], $r3 ; Restore R3
- addq 4, $acr
- move.d [$acr], $r4 ; Restore R4
- addq 4, $acr
- move.d [$acr], $r5 ; Restore R5
- addq 4, $acr
- move.d [$acr], $r6 ; Restore R6
- addq 4, $acr
- move.d [$acr], $r7 ; Restore R7
- addq 4, $acr
- move.d [$acr], $r8 ; Restore R8
- addq 4, $acr
- move.d [$acr], $r9 ; Restore R9
- addq 4, $acr
- move.d [$acr], $r10 ; Restore R10
- addq 4, $acr
- move.d [$acr], $r11 ; Restore R11
- addq 4, $acr
- move.d [$acr], $r12 ; Restore R12
- addq 4, $acr
- move.d [$acr], $r13 ; Restore R13
-
-;;
-;; We restore all registers, even though some of them probably haven't changed.
-;;
-
- addq 4, $acr
- move.d [$acr], $sp ; Restore SP (R14)
-
- ;; ACR cannot be restored just yet.
- addq 8, $acr
-
- ;; Skip BZ, VR.
- addq 2, $acr
-
- move [$acr], $pid ; Restore PID
- addq 4, $acr
- move [$acr], $srs ; Restore SRS
- nop
- nop
- nop
- addq 1, $acr
-
- ;; Skip WZ.
- addq 2, $acr
-
- move [$acr], $exs ; Restore EXS.
- addq 4, $acr
- move [$acr], $eda ; Restore EDA.
- addq 4, $acr
- move [$acr], $mof ; Restore MOF.
-
- ;; Skip DZ.
- addq 8, $acr
-
- move [$acr], $ebp ; Restore EBP.
- addq 4, $acr
- move [$acr], $erp ; Restore ERP.
- addq 4, $acr
- move [$acr], $srp ; Restore SRP.
- addq 4, $acr
- move [$acr], $nrp ; Restore NRP.
- addq 4, $acr
- move [$acr], $ccs ; Restore CCS like an ordinary register.
- addq 4, $acr
- move [$acr], $usp ; Restore USP
- addq 4, $acr
- move [$acr], $spc ; Restore SPC
- ; No restoration of pseudo-PC of course.
-
- move.d reg, $acr ; Reset ACR to point at the beginning of the register image
- add.d 15*4, $acr
- move.d [$acr], $acr ; Finally, restore ACR.
- rete ; Same as jump ERP
- rfe ; Shifts CCS
diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c
deleted file mode 100644
index a02f276d0ed4..000000000000
--- a/arch/cris/arch-v32/kernel/process.c
+++ /dev/null
@@ -1,180 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2000-2003 Axis Communications AB
- *
- * Authors: Bjorn Wesen (bjornw@axis.com)
- * Mikael Starvik (starvik@axis.com)
- * Tobias Anderberg (tobiasa@axis.com), CRISv32 port.
- *
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/fs.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/timer_defs.h>
-#include <hwregs/intr_vect_defs.h>
-#include <linux/ptrace.h>
-
-extern void stop_watchdog(void);
-
-/* We use this if we don't have any better idle routine. */
-void default_idle(void)
-{
- local_irq_enable();
- /* Halt until exception. */
- __asm__ volatile("halt");
-}
-
-/*
- * Free current thread data structures etc..
- */
-
-extern void deconfigure_bp(long pid);
-void exit_thread(struct task_struct *tsk)
-{
- deconfigure_bp(tsk->pid);
-}
-
-/*
- * If the watchdog is enabled, disable interrupts and enter an infinite loop.
- * The watchdog will reset the CPU after 0.1s. If the watchdog isn't enabled
- * then enable it and wait.
- */
-extern void arch_enable_nmi(void);
-
-void
-hard_reset_now(void)
-{
- /*
- * Don't declare this variable elsewhere. We don't want any other
- * code to know about it than the watchdog handler in entry.S and
- * this code, implementing hard reset through the watchdog.
- */
-#if defined(CONFIG_ETRAX_WATCHDOG)
- extern int cause_of_death;
-#endif
-
- printk("*** HARD RESET ***\n");
- local_irq_disable();
-
-#if defined(CONFIG_ETRAX_WATCHDOG)
- cause_of_death = 0xbedead;
-#else
-{
- reg_timer_rw_wd_ctrl wd_ctrl = {0};
-
- stop_watchdog();
-
- wd_ctrl.key = 16; /* Arbitrary key. */
- wd_ctrl.cnt = 1; /* Minimum time. */
- wd_ctrl.cmd = regk_timer_start;
-
- arch_enable_nmi();
- REG_WR(timer, regi_timer0, rw_wd_ctrl, wd_ctrl);
-}
-#endif
-
- while (1)
- ; /* Wait for reset. */
-}
-
-/*
- * Setup the child's kernel stack with a pt_regs and call switch_stack() on it.
- * It will be unnested during _resume and _ret_from_sys_call when the new thread
- * is scheduled.
- *
- * Also setup the thread switching structure which is used to keep
- * thread-specific data during _resumes.
- */
-
-extern asmlinkage void ret_from_fork(void);
-extern asmlinkage void ret_from_kernel_thread(void);
-
-int
-copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
-{
- struct pt_regs *childregs = task_pt_regs(p);
- struct switch_stack *swstack = ((struct switch_stack *) childregs) - 1;
-
- /*
- * Put the pt_regs structure at the end of the new kernel stack page and
- * fix it up. Note: the task_struct doubles as the kernel stack for the
- * task.
- */
- if (unlikely(p->flags & PF_KTHREAD)) {
- memset(swstack, 0,
- sizeof(struct switch_stack) + sizeof(struct pt_regs));
- swstack->r1 = usp;
- swstack->r2 = arg;
- childregs->ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
- swstack->return_ip = (unsigned long) ret_from_kernel_thread;
- p->thread.ksp = (unsigned long) swstack;
- p->thread.usp = 0;
- return 0;
- }
- *childregs = *current_pt_regs(); /* Struct copy of pt_regs. */
- childregs->r10 = 0; /* Child returns 0 after a fork/clone. */
-
- /* Set a new TLS ?
- * The TLS is in $mof because it is the 5th argument to sys_clone.
- */
- if (p->mm && (clone_flags & CLONE_SETTLS)) {
- task_thread_info(p)->tls = childregs->mof;
- }
-
- /* Put the switch stack right below the pt_regs. */
-
- /* Parameter to ret_from_sys_call. 0 is don't restart the syscall. */
- swstack->r9 = 0;
-
- /*
- * We want to return into ret_from_sys_call after the _resume.
- * ret_from_fork will call ret_from_sys_call.
- */
- swstack->return_ip = (unsigned long) ret_from_fork;
-
- /* Fix the user-mode and kernel-mode stackpointer. */
- p->thread.usp = usp ?: rdusp();
- p->thread.ksp = (unsigned long) swstack;
-
- return 0;
-}
-
-unsigned long
-get_wchan(struct task_struct *p)
-{
- /* TODO */
- return 0;
-}
-#undef last_sched
-#undef first_sched
-
-void show_regs(struct pt_regs * regs)
-{
- unsigned long usp = rdusp();
-
- show_regs_print_info(KERN_DEFAULT);
-
- printk("ERP: %08lx SRP: %08lx CCS: %08lx USP: %08lx MOF: %08lx\n",
- regs->erp, regs->srp, regs->ccs, usp, regs->mof);
-
- printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
- regs->r0, regs->r1, regs->r2, regs->r3);
-
- printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
- regs->r4, regs->r5, regs->r6, regs->r7);
-
- printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
- regs->r8, regs->r9, regs->r10, regs->r11);
-
- printk("r12: %08lx r13: %08lx oR10: %08lx\n",
- regs->r12, regs->r13, regs->orig_r10);
-}
diff --git a/arch/cris/arch-v32/kernel/ptrace.c b/arch/cris/arch-v32/kernel/ptrace.c
deleted file mode 100644
index ccac1aaadc8a..000000000000
--- a/arch/cris/arch-v32/kernel/ptrace.c
+++ /dev/null
@@ -1,492 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2000-2007, Axis Communications AB.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/sched/task_stack.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/signal.h>
-#include <linux/security.h>
-
-#include <linux/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <arch/hwregs/supp_reg.h>
-
-/*
- * Determines which bits in CCS the user has access to.
- * 1 = access, 0 = no access.
- */
-#define CCS_MASK 0x00087c00 /* SXNZVC */
-
-#define SBIT_USER (1 << (S_CCS_BITNR + CCS_SHIFT))
-
-static int put_debugreg(long pid, unsigned int regno, long data);
-static long get_debugreg(long pid, unsigned int regno);
-static unsigned long get_pseudo_pc(struct task_struct *child);
-void deconfigure_bp(long pid);
-
-extern unsigned long cris_signal_return_page;
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-long get_reg(struct task_struct *task, unsigned int regno)
-{
- /* USP is a special case, it's not in the pt_regs struct but
- * in the tasks thread struct
- */
- unsigned long ret;
-
- if (regno <= PT_EDA)
- ret = ((unsigned long *)task_pt_regs(task))[regno];
- else if (regno == PT_USP)
- ret = task->thread.usp;
- else if (regno == PT_PPC)
- ret = get_pseudo_pc(task);
- else if (regno <= PT_MAX)
- ret = get_debugreg(task->pid, regno);
- else
- ret = 0;
-
- return ret;
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-int put_reg(struct task_struct *task, unsigned int regno, unsigned long data)
-{
- if (regno <= PT_EDA)
- ((unsigned long *)task_pt_regs(task))[regno] = data;
- else if (regno == PT_USP)
- task->thread.usp = data;
- else if (regno == PT_PPC) {
- /* Write pseudo-PC to ERP only if changed. */
- if (data != get_pseudo_pc(task))
- task_pt_regs(task)->erp = data;
- } else if (regno <= PT_MAX)
- return put_debugreg(task->pid, regno, data);
- else
- return -1;
- return 0;
-}
-
-void user_enable_single_step(struct task_struct *child)
-{
- unsigned long tmp;
-
- /*
- * Set up SPC if not set already (in which case we have no other
- * choice but to trust it).
- */
- if (!get_reg(child, PT_SPC)) {
- /* In case we're stopped in a delay slot. */
- tmp = get_reg(child, PT_ERP) & ~1;
- put_reg(child, PT_SPC, tmp);
- }
- tmp = get_reg(child, PT_CCS) | SBIT_USER;
- put_reg(child, PT_CCS, tmp);
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
- put_reg(child, PT_SPC, 0);
-
- if (!get_debugreg(child->pid, PT_BP_CTRL)) {
- unsigned long tmp;
- /* If no h/w bp configured, disable S bit. */
- tmp = get_reg(child, PT_CCS) & ~SBIT_USER;
- put_reg(child, PT_CCS, tmp);
- }
-}
-
-/*
- * Called by kernel/ptrace.c when detaching.
- *
- * Make sure the single step bit is not set.
- */
-void
-ptrace_disable(struct task_struct *child)
-{
- /* Deconfigure SPC and S-bit. */
- user_disable_single_step(child);
- put_reg(child, PT_SPC, 0);
-
- /* Deconfigure any watchpoints associated with the child. */
- deconfigure_bp(child->pid);
-}
-
-
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- int ret;
- unsigned int regno = addr >> 2;
- unsigned long __user *datap = (unsigned long __user *)data;
-
- switch (request) {
- /* Read word at location address. */
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA: {
- unsigned long tmp;
- int copied;
-
- ret = -EIO;
-
- /* The signal trampoline page is outside the normal user-addressable
- * space but still accessible. This is hack to make it possible to
- * access the signal handler code in GDB.
- */
- if ((addr & PAGE_MASK) == cris_signal_return_page) {
- /* The trampoline page is globally mapped, no page table to traverse.*/
- tmp = *(unsigned long*)addr;
- } else {
- copied = ptrace_access_vm(child, addr, &tmp, sizeof(tmp), FOLL_FORCE);
-
- if (copied != sizeof(tmp))
- break;
- }
-
- ret = put_user(tmp,datap);
- break;
- }
-
- /* Read the word at location address in the USER area. */
- case PTRACE_PEEKUSR: {
- unsigned long tmp;
-
- ret = -EIO;
- if ((addr & 3) || regno > PT_MAX)
- break;
-
- tmp = get_reg(child, regno);
- ret = put_user(tmp, datap);
- break;
- }
-
- /* Write the word at location address. */
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA:
- ret = generic_ptrace_pokedata(child, addr, data);
- break;
-
- /* Write the word at location address in the USER area. */
- case PTRACE_POKEUSR:
- ret = -EIO;
- if ((addr & 3) || regno > PT_MAX)
- break;
-
- if (regno == PT_CCS) {
- /* don't allow the tracing process to change stuff like
- * interrupt enable, kernel/user bit, dma enables etc.
- */
- data &= CCS_MASK;
- data |= get_reg(child, PT_CCS) & ~CCS_MASK;
- }
- if (put_reg(child, regno, data))
- break;
- ret = 0;
- break;
-
- /* Get all GP registers from the child. */
- case PTRACE_GETREGS: {
- int i;
- unsigned long tmp;
-
- for (i = 0; i <= PT_MAX; i++) {
- tmp = get_reg(child, i);
-
- if (put_user(tmp, datap)) {
- ret = -EFAULT;
- goto out_tsk;
- }
-
- datap++;
- }
-
- ret = 0;
- break;
- }
-
- /* Set all GP registers in the child. */
- case PTRACE_SETREGS: {
- int i;
- unsigned long tmp;
-
- for (i = 0; i <= PT_MAX; i++) {
- if (get_user(tmp, datap)) {
- ret = -EFAULT;
- goto out_tsk;
- }
-
- if (i == PT_CCS) {
- tmp &= CCS_MASK;
- tmp |= get_reg(child, PT_CCS) & ~CCS_MASK;
- }
-
- put_reg(child, i, tmp);
- datap++;
- }
-
- ret = 0;
- break;
- }
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
-
-out_tsk:
- return ret;
-}
-
-void do_syscall_trace(void)
-{
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
-
- if (!(current->ptrace & PT_PTRACED))
- return;
-
- /* the 0x80 provides a way for the tracing parent to distinguish
- between a syscall stop and SIGTRAP delivery */
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0));
-
- /*
- * This isn't the same as continuing with a signal, but it will do for
- * normal use.
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
-
-/* Returns the size of an instruction that has a delay slot. */
-
-static int insn_size(struct task_struct *child, unsigned long pc)
-{
- unsigned long opcode;
- int copied;
- int opsize = 0;
-
- /* Read the opcode at pc (do what PTRACE_PEEKTEXT would do). */
- copied = access_process_vm(child, pc, &opcode, sizeof(opcode), FOLL_FORCE);
- if (copied != sizeof(opcode))
- return 0;
-
- switch ((opcode & 0x0f00) >> 8) {
- case 0x0:
- case 0x9:
- case 0xb:
- opsize = 2;
- break;
- case 0xe:
- case 0xf:
- opsize = 6;
- break;
- case 0xd:
- /* Could be 4 or 6; check more bits. */
- if ((opcode & 0xff) == 0xff)
- opsize = 4;
- else
- opsize = 6;
- break;
- default:
- panic("ERROR: Couldn't find size of opcode 0x%lx at 0x%lx\n",
- opcode, pc);
- }
-
- return opsize;
-}
-
-static unsigned long get_pseudo_pc(struct task_struct *child)
-{
- /* Default value for PC is ERP. */
- unsigned long pc = get_reg(child, PT_ERP);
-
- if (pc & 0x1) {
- unsigned long spc = get_reg(child, PT_SPC);
- /* Delay slot bit set. Report as stopped on proper
- instruction. */
- if (spc) {
- /* Rely on SPC if set. FIXME: We might want to check
- that EXS indicates we stopped due to a single-step
- exception. */
- pc = spc;
- } else {
- /* Calculate the PC from the size of the instruction
- that the delay slot we're in belongs to. */
- pc += insn_size(child, pc & ~1) - 1;
- }
- }
- return pc;
-}
-
-static long bp_owner = 0;
-
-/* Reachable from exit_thread in signal.c, so not static. */
-void deconfigure_bp(long pid)
-{
- int bp;
-
- /* Only deconfigure if the pid is the owner. */
- if (bp_owner != pid)
- return;
-
- for (bp = 0; bp < 6; bp++) {
- unsigned long tmp;
- /* Deconfigure start and end address (also gets rid of ownership). */
- put_debugreg(pid, PT_BP + 3 + (bp * 2), 0);
- put_debugreg(pid, PT_BP + 4 + (bp * 2), 0);
-
- /* Deconfigure relevant bits in control register. */
- tmp = get_debugreg(pid, PT_BP_CTRL) & ~(3 << (2 + (bp * 4)));
- put_debugreg(pid, PT_BP_CTRL, tmp);
- }
- /* No owner now. */
- bp_owner = 0;
-}
-
-static int put_debugreg(long pid, unsigned int regno, long data)
-{
- int ret = 0;
- register int old_srs;
-
-#ifdef CONFIG_ETRAX_KGDB
- /* Ignore write, but pretend it was ok if value is 0
- (we don't want POKEUSR/SETREGS failing unnessecarily). */
- return (data == 0) ? ret : -1;
-#endif
-
- /* Simple owner management. */
- if (!bp_owner)
- bp_owner = pid;
- else if (bp_owner != pid) {
- /* Ignore write, but pretend it was ok if value is 0
- (we don't want POKEUSR/SETREGS failing unnessecarily). */
- return (data == 0) ? ret : -1;
- }
-
- /* Remember old SRS. */
- SPEC_REG_RD(SPEC_REG_SRS, old_srs);
- /* Switch to BP bank. */
- SUPP_BANK_SEL(BANK_BP);
-
- switch (regno - PT_BP) {
- case 0:
- SUPP_REG_WR(0, data); break;
- case 1:
- case 2:
- if (data)
- ret = -1;
- break;
- case 3:
- SUPP_REG_WR(3, data); break;
- case 4:
- SUPP_REG_WR(4, data); break;
- case 5:
- SUPP_REG_WR(5, data); break;
- case 6:
- SUPP_REG_WR(6, data); break;
- case 7:
- SUPP_REG_WR(7, data); break;
- case 8:
- SUPP_REG_WR(8, data); break;
- case 9:
- SUPP_REG_WR(9, data); break;
- case 10:
- SUPP_REG_WR(10, data); break;
- case 11:
- SUPP_REG_WR(11, data); break;
- case 12:
- SUPP_REG_WR(12, data); break;
- case 13:
- SUPP_REG_WR(13, data); break;
- case 14:
- SUPP_REG_WR(14, data); break;
- default:
- ret = -1;
- break;
- }
-
- /* Restore SRS. */
- SPEC_REG_WR(SPEC_REG_SRS, old_srs);
- /* Just for show. */
- NOP();
- NOP();
- NOP();
-
- return ret;
-}
-
-static long get_debugreg(long pid, unsigned int regno)
-{
- register int old_srs;
- register long data;
-
- if (pid != bp_owner) {
- return 0;
- }
-
- /* Remember old SRS. */
- SPEC_REG_RD(SPEC_REG_SRS, old_srs);
- /* Switch to BP bank. */
- SUPP_BANK_SEL(BANK_BP);
-
- switch (regno - PT_BP) {
- case 0:
- SUPP_REG_RD(0, data); break;
- case 1:
- case 2:
- /* error return value? */
- data = 0;
- break;
- case 3:
- SUPP_REG_RD(3, data); break;
- case 4:
- SUPP_REG_RD(4, data); break;
- case 5:
- SUPP_REG_RD(5, data); break;
- case 6:
- SUPP_REG_RD(6, data); break;
- case 7:
- SUPP_REG_RD(7, data); break;
- case 8:
- SUPP_REG_RD(8, data); break;
- case 9:
- SUPP_REG_RD(9, data); break;
- case 10:
- SUPP_REG_RD(10, data); break;
- case 11:
- SUPP_REG_RD(11, data); break;
- case 12:
- SUPP_REG_RD(12, data); break;
- case 13:
- SUPP_REG_RD(13, data); break;
- case 14:
- SUPP_REG_RD(14, data); break;
- default:
- /* error return value? */
- data = 0;
- }
-
- /* Restore SRS. */
- SPEC_REG_WR(SPEC_REG_SRS, old_srs);
- /* Just for show. */
- NOP();
- NOP();
- NOP();
-
- return data;
-}
diff --git a/arch/cris/arch-v32/kernel/setup.c b/arch/cris/arch-v32/kernel/setup.c
deleted file mode 100644
index a36372e35e96..000000000000
--- a/arch/cris/arch-v32/kernel/setup.c
+++ /dev/null
@@ -1,163 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Display CPU info in /proc/cpuinfo.
- *
- * Copyright (C) 2003, Axis Communications AB.
- */
-
-#include <linux/seq_file.h>
-#include <linux/proc_fs.h>
-#include <linux/delay.h>
-#include <linux/param.h>
-
-#include <linux/i2c.h>
-#include <linux/platform_device.h>
-
-#ifdef CONFIG_PROC_FS
-
-#define HAS_FPU 0x0001
-#define HAS_MMU 0x0002
-#define HAS_ETHERNET100 0x0004
-#define HAS_TOKENRING 0x0008
-#define HAS_SCSI 0x0010
-#define HAS_ATA 0x0020
-#define HAS_USB 0x0040
-#define HAS_IRQ_BUG 0x0080
-#define HAS_MMU_BUG 0x0100
-
-struct cpu_info {
- char *cpu_model;
- unsigned short rev;
- unsigned short cache_size;
- unsigned short flags;
-};
-
-/* Some of these model are here for historical reasons only. */
-static struct cpu_info cpinfo[] = {
- {"ETRAX 1", 0, 0, 0},
- {"ETRAX 2", 1, 0, 0},
- {"ETRAX 3", 2, 0, 0},
- {"ETRAX 4", 3, 0, 0},
- {"Simulator", 7, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA},
- {"ETRAX 100", 8, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_IRQ_BUG},
- {"ETRAX 100", 9, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA},
-
- {"ETRAX 100LX", 10, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB
- | HAS_MMU | HAS_MMU_BUG},
-
- {"ETRAX 100LX v2", 11, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB
- | HAS_MMU},
-#ifdef CONFIG_ETRAXFS
- {"ETRAX FS", 32, 32, HAS_ETHERNET100 | HAS_ATA | HAS_MMU},
-#else
- {"ARTPEC-3", 32, 32, HAS_ETHERNET100 | HAS_MMU},
-#endif
- {"Unknown", 0, 0, 0}
-};
-
-int show_cpuinfo(struct seq_file *m, void *v)
-{
- int i;
- int cpu = (int)v - 1;
- unsigned long revision;
- struct cpu_info *info;
-
- info = &cpinfo[ARRAY_SIZE(cpinfo) - 1];
-
- revision = rdvr();
-
- for (i = 0; i < ARRAY_SIZE(cpinfo); i++) {
- if (cpinfo[i].rev == revision) {
- info = &cpinfo[i];
- break;
- }
- }
-
- seq_printf(m,
- "processor\t: %d\n"
- "cpu\t\t: CRIS\n"
- "cpu revision\t: %lu\n"
- "cpu model\t: %s\n"
- "cache size\t: %d KB\n"
- "fpu\t\t: %s\n"
- "mmu\t\t: %s\n"
- "mmu DMA bug\t: %s\n"
- "ethernet\t: %s Mbps\n"
- "token ring\t: %s\n"
- "scsi\t\t: %s\n"
- "ata\t\t: %s\n"
- "usb\t\t: %s\n"
- "bogomips\t: %lu.%02lu\n\n",
-
- cpu,
- revision,
- info->cpu_model,
- info->cache_size,
- info->flags & HAS_FPU ? "yes" : "no",
- info->flags & HAS_MMU ? "yes" : "no",
- info->flags & HAS_MMU_BUG ? "yes" : "no",
- info->flags & HAS_ETHERNET100 ? "10/100" : "10",
- info->flags & HAS_TOKENRING ? "4/16 Mbps" : "no",
- info->flags & HAS_SCSI ? "yes" : "no",
- info->flags & HAS_ATA ? "yes" : "no",
- info->flags & HAS_USB ? "yes" : "no",
- (loops_per_jiffy * HZ + 500) / 500000,
- ((loops_per_jiffy * HZ + 500) / 5000) % 100);
-
- return 0;
-}
-
-#endif /* CONFIG_PROC_FS */
-
-void show_etrax_copyright(void)
-{
-#ifdef CONFIG_ETRAXFS
- printk(KERN_INFO "Linux/CRISv32 port on ETRAX FS "
- "(C) 2003, 2004 Axis Communications AB\n");
-#else
- printk(KERN_INFO "Linux/CRISv32 port on ARTPEC-3 "
- "(C) 2003-2009 Axis Communications AB\n");
-#endif
-}
-
-static struct i2c_board_info __initdata i2c_info[] = {
- {I2C_BOARD_INFO("camblock", 0x43)},
- {I2C_BOARD_INFO("tmp100", 0x48)},
- {I2C_BOARD_INFO("tmp100", 0x4A)},
- {I2C_BOARD_INFO("tmp100", 0x4C)},
- {I2C_BOARD_INFO("tmp100", 0x4D)},
- {I2C_BOARD_INFO("tmp100", 0x4E)},
-#ifdef CONFIG_RTC_DRV_PCF8563
- {I2C_BOARD_INFO("pcf8563", 0x51)},
-#endif
- {I2C_BOARD_INFO("pca9536", 0x41)},
- {I2C_BOARD_INFO("fnp300", 0x40)},
- {I2C_BOARD_INFO("fnp300", 0x42)},
- {I2C_BOARD_INFO("adc101", 0x54)},
-};
-
-static struct i2c_board_info __initdata i2c_info2[] = {
- {I2C_BOARD_INFO("camblock", 0x43)},
- {I2C_BOARD_INFO("tmp100", 0x48)},
- {I2C_BOARD_INFO("tmp100", 0x4A)},
- {I2C_BOARD_INFO("tmp100", 0x4C)},
- {I2C_BOARD_INFO("tmp100", 0x4D)},
- {I2C_BOARD_INFO("tmp100", 0x4E)},
- {I2C_BOARD_INFO("pca9536", 0x41)},
- {I2C_BOARD_INFO("fnp300", 0x40)},
- {I2C_BOARD_INFO("fnp300", 0x42)},
- {I2C_BOARD_INFO("adc101", 0x54)},
-};
-
-static struct i2c_board_info __initdata i2c_info3[] = {
- {I2C_BOARD_INFO("adc101", 0x54)},
-};
-
-static int __init etrax_init(void)
-{
- i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
- i2c_register_board_info(1, i2c_info2, ARRAY_SIZE(i2c_info2));
- i2c_register_board_info(2, i2c_info3, ARRAY_SIZE(i2c_info3));
- return 0;
-}
-arch_initcall(etrax_init);
diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c
deleted file mode 100644
index 4f2e3ba3bf40..000000000000
--- a/arch/cris/arch-v32/kernel/signal.c
+++ /dev/null
@@ -1,541 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2003, Axis Communications AB.
- */
-
-#include <linux/sched.h>
-#include <linux/sched/task_stack.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/syscalls.h>
-#include <linux/vmalloc.h>
-
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/ucontext.h>
-#include <linux/uaccess.h>
-#include <arch/hwregs/cpu_vect.h>
-
-extern unsigned long cris_signal_return_page;
-
-/*
- * A syscall in CRIS is really a "break 13" instruction, which is 2
- * bytes. The registers is manipulated so upon return the instruction
- * will be executed again.
- *
- * This relies on that PC points to the instruction after the break call.
- */
-#define RESTART_CRIS_SYS(regs) regs->r10 = regs->orig_r10; regs->erp -= 2;
-
-/* Signal frames. */
-struct signal_frame {
- struct sigcontext sc;
- unsigned long extramask[_NSIG_WORDS - 1];
- unsigned char retcode[8]; /* Trampoline code. */
-};
-
-struct rt_signal_frame {
- struct siginfo *pinfo;
- void *puc;
- struct siginfo info;
- struct ucontext uc;
- unsigned char retcode[8]; /* Trampoline code. */
-};
-
-void do_signal(int restart, struct pt_regs *regs);
-void keep_debug_flags(unsigned long oldccs, unsigned long oldspc,
- struct pt_regs *regs);
-
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
-{
- unsigned int err = 0;
- unsigned long old_usp;
-
- /* Always make any pending restarted system calls return -EINTR */
- current->restart_block.fn = do_no_restart_syscall;
-
- /*
- * Restore the registers from &sc->regs. sc is already checked
- * for VERIFY_READ since the signal_frame was previously
- * checked in sys_sigreturn().
- */
- if (__copy_from_user(regs, sc, sizeof(struct pt_regs)))
- goto badframe;
-
- /* Make that the user-mode flag is set. */
- regs->ccs |= (1 << (U_CCS_BITNR + CCS_SHIFT));
-
- /* Don't perform syscall restarting */
- regs->exs = -1;
-
- /* Restore the old USP. */
- err |= __get_user(old_usp, &sc->usp);
- wrusp(old_usp);
-
- return err;
-
-badframe:
- return 1;
-}
-
-asmlinkage int sys_sigreturn(void)
-{
- struct pt_regs *regs = current_pt_regs();
- sigset_t set;
- struct signal_frame __user *frame;
- unsigned long oldspc = regs->spc;
- unsigned long oldccs = regs->ccs;
-
- frame = (struct signal_frame *) rdusp();
-
- /*
- * Since the signal is stacked on a dword boundary, the frame
- * should be dword aligned here as well. It it's not, then the
- * user is trying some funny business.
- */
- if (((long)frame) & 3)
- goto badframe;
-
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
-
- if (__get_user(set.sig[0], &frame->sc.oldmask) ||
- (_NSIG_WORDS > 1 && __copy_from_user(&set.sig[1],
- frame->extramask,
- sizeof(frame->extramask))))
- goto badframe;
-
- set_current_blocked(&set);
-
- if (restore_sigcontext(regs, &frame->sc))
- goto badframe;
-
- keep_debug_flags(oldccs, oldspc, regs);
-
- return regs->r10;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-asmlinkage int sys_rt_sigreturn(void)
-{
- struct pt_regs *regs = current_pt_regs();
- sigset_t set;
- struct rt_signal_frame __user *frame;
- unsigned long oldspc = regs->spc;
- unsigned long oldccs = regs->ccs;
-
- frame = (struct rt_signal_frame *) rdusp();
-
- /*
- * Since the signal is stacked on a dword boundary, the frame
- * should be dword aligned here as well. It it's not, then the
- * user is trying some funny business.
- */
- if (((long)frame) & 3)
- goto badframe;
-
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
-
- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
- goto badframe;
-
- set_current_blocked(&set);
-
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
- goto badframe;
-
- if (restore_altstack(&frame->uc.uc_stack))
- goto badframe;
-
- keep_debug_flags(oldccs, oldspc, regs);
-
- return regs->r10;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-/* Setup a signal frame. */
-static int
-setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
- unsigned long mask)
-{
- int err;
- unsigned long usp;
-
- err = 0;
- usp = rdusp();
-
- /*
- * Copy the registers. They are located first in sc, so it's
- * possible to use sc directly.
- */
- err |= __copy_to_user(sc, regs, sizeof(struct pt_regs));
-
- err |= __put_user(mask, &sc->oldmask);
- err |= __put_user(usp, &sc->usp);
-
- return err;
-}
-
-/* Figure out where to put the new signal frame - usually on the stack. */
-static inline void __user *
-get_sigframe(struct ksignal *ksig, size_t frame_size)
-{
- unsigned long sp = sigsp(rdusp(), ksig);
-
- /* Make sure the frame is dword-aligned. */
- sp &= ~3;
-
- return (void __user *)(sp - frame_size);
-}
-
-/* Grab and setup a signal frame.
- *
- * Basically a lot of state-info is stacked, and arranged for the
- * user-mode program to return to the kernel using either a trampiline
- * which performs the syscall sigreturn(), or a provided user-mode
- * trampoline.
- */
-static int
-setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
-{
- int err;
- unsigned long return_ip;
- struct signal_frame __user *frame;
-
- err = 0;
- frame = get_sigframe(ksig, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- return -EFAULT;
-
- err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
-
- if (err)
- return -EFAULT;
-
- if (_NSIG_WORDS > 1) {
- err |= __copy_to_user(frame->extramask, &set->sig[1],
- sizeof(frame->extramask));
- }
-
- if (err)
- return -EFAULT;
-
- /*
- * Set up to return from user-space. If provided, use a stub
- * already located in user-space.
- */
- if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- return_ip = (unsigned long)ksig->ka.sa.sa_restorer;
- } else {
- /* Trampoline - the desired return ip is in the signal return page. */
- return_ip = cris_signal_return_page;
-
- /*
- * This is movu.w __NR_sigreturn, r9; break 13;
- *
- * WE DO NOT USE IT ANY MORE! It's only left here for historical
- * reasons and because gdb uses it as a signature to notice
- * signal handler stack frames.
- */
- err |= __put_user(0x9c5f, (short __user*)(frame->retcode+0));
- err |= __put_user(__NR_sigreturn, (short __user*)(frame->retcode+2));
- err |= __put_user(0xe93d, (short __user*)(frame->retcode+4));
- }
-
- if (err)
- return -EFAULT;
-
- /*
- * Set up registers for signal handler.
- *
- * Where the code enters now.
- * Where the code enter later.
- * First argument, signo.
- */
- regs->erp = (unsigned long) ksig->ka.sa.sa_handler;
- regs->srp = return_ip;
- regs->r10 = ksig->sig;
-
- /* Actually move the USP to reflect the stacked frame. */
- wrusp((unsigned long)frame);
-
- return 0;
-}
-
-static int
-setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
-{
- int err;
- unsigned long return_ip;
- struct rt_signal_frame __user *frame;
-
- err = 0;
- frame = get_sigframe(ksig, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- return -EFAULT;
-
- err |= __put_user(&frame->info, &frame->pinfo);
- err |= __put_user(&frame->uc, &frame->puc);
- err |= copy_siginfo_to_user(&frame->info, &ksig->info);
-
- if (err)
- return -EFAULT;
-
- /* Clear all the bits of the ucontext we don't use. */
- err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
- err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
- err |= __save_altstack(&frame->uc.uc_stack, rdusp());
-
- if (err)
- return -EFAULT;
-
- /*
- * Set up to return from user-space. If provided, use a stub
- * already located in user-space.
- */
- if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- return_ip = (unsigned long) ksig->ka.sa.sa_restorer;
- } else {
- /* Trampoline - the desired return ip is in the signal return page. */
- return_ip = cris_signal_return_page + 6;
-
- /*
- * This is movu.w __NR_rt_sigreturn, r9; break 13;
- *
- * WE DO NOT USE IT ANY MORE! It's only left here for historical
- * reasons and because gdb uses it as a signature to notice
- * signal handler stack frames.
- */
- err |= __put_user(0x9c5f, (short __user*)(frame->retcode+0));
-
- err |= __put_user(__NR_rt_sigreturn,
- (short __user*)(frame->retcode+2));
-
- err |= __put_user(0xe93d, (short __user*)(frame->retcode+4));
- }
-
- if (err)
- return -EFAULT;
-
- /*
- * Set up registers for signal handler.
- *
- * Where the code enters now.
- * Where the code enters later.
- * First argument is signo.
- * Second argument is (siginfo_t *).
- * Third argument is unused.
- */
- regs->erp = (unsigned long) ksig->ka.sa.sa_handler;
- regs->srp = return_ip;
- regs->r10 = ksig->sig;
- regs->r11 = (unsigned long) &frame->info;
- regs->r12 = 0;
-
- /* Actually move the usp to reflect the stacked frame. */
- wrusp((unsigned long)frame);
-
- return 0;
-}
-
-/* Invoke a signal handler to, well, handle the signal. */
-static inline void
-handle_signal(int canrestart, struct ksignal *ksig, struct pt_regs *regs)
-{
- sigset_t *oldset = sigmask_to_save();
- int ret;
-
- /* Check if this got called from a system call. */
- if (canrestart) {
- /* If so, check system call restarting. */
- switch (regs->r10) {
- case -ERESTART_RESTARTBLOCK:
- case -ERESTARTNOHAND:
- /*
- * This means that the syscall should
- * only be restarted if there was no
- * handler for the signal, and since
- * this point isn't reached unless
- * there is a handler, there's no need
- * to restart.
- */
- regs->r10 = -EINTR;
- break;
-
- case -ERESTARTSYS:
- /*
- * This means restart the syscall if
- * there is no handler, or the handler
- * was registered with SA_RESTART.
- */
- if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
- regs->r10 = -EINTR;
- break;
- }
-
- /* Fall through. */
-
- case -ERESTARTNOINTR:
- /*
- * This means that the syscall should
- * be called again after the signal
- * handler returns.
- */
- RESTART_CRIS_SYS(regs);
- break;
- }
- }
-
- /* Set up the stack frame. */
- if (ksig->ka.sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(ksig, oldset, regs);
- else
- ret = setup_frame(ksig, oldset, regs);
-
- signal_setup_done(ret, ksig, 0);
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- *
- * Also note that the regs structure given here as an argument, is the latest
- * pushed pt_regs. It may or may not be the same as the first pushed registers
- * when the initial usermode->kernelmode transition took place. Therefore
- * we can use user_mode(regs) to see if we came directly from kernel or user
- * mode below.
- */
-void
-do_signal(int canrestart, struct pt_regs *regs)
-{
- struct ksignal ksig;
-
- canrestart = canrestart && ((int)regs->exs >= 0);
-
- /*
- * The common case should go fast, which is why this point is
- * reached from kernel-mode. If that's the case, just return
- * without doing anything.
- */
- if (!user_mode(regs))
- return;
-
- if (get_signal(&ksig)) {
- /* Whee! Actually deliver the signal. */
- handle_signal(canrestart, &ksig, regs);
- return;
- }
-
- /* Got here from a system call? */
- if (canrestart) {
- /* Restart the system call - no handlers present. */
- if (regs->r10 == -ERESTARTNOHAND ||
- regs->r10 == -ERESTARTSYS ||
- regs->r10 == -ERESTARTNOINTR) {
- RESTART_CRIS_SYS(regs);
- }
-
- if (regs->r10 == -ERESTART_RESTARTBLOCK){
- regs->r9 = __NR_restart_syscall;
- regs->erp -= 2;
- }
- }
-
- /* if there's no signal to deliver, we just put the saved sigmask
- * back */
- restore_saved_sigmask();
-}
-
-asmlinkage void
-ugdb_trap_user(struct thread_info *ti, int sig)
-{
- if (((user_regs(ti)->exs & 0xff00) >> 8) != SINGLE_STEP_INTR_VECT) {
- /* Zero single-step PC if the reason we stopped wasn't a single
- step exception. This is to avoid relying on it when it isn't
- reliable. */
- user_regs(ti)->spc = 0;
- }
- /* FIXME: Filter out false h/w breakpoint hits (i.e. EDA
- not within any configured h/w breakpoint range). Synchronize with
- what already exists for kernel debugging. */
- if (((user_regs(ti)->exs & 0xff00) >> 8) == BREAK_8_INTR_VECT) {
- /* Break 8: subtract 2 from ERP unless in a delay slot. */
- if (!(user_regs(ti)->erp & 0x1))
- user_regs(ti)->erp -= 2;
- }
- sys_kill(ti->task->pid, sig);
-}
-
-void
-keep_debug_flags(unsigned long oldccs, unsigned long oldspc,
- struct pt_regs *regs)
-{
- if (oldccs & (1 << Q_CCS_BITNR)) {
- /* Pending single step due to single-stepping the break 13
- in the signal trampoline: keep the Q flag. */
- regs->ccs |= (1 << Q_CCS_BITNR);
- /* S flag should be set - complain if it's not. */
- if (!(oldccs & (1 << (S_CCS_BITNR + CCS_SHIFT)))) {
- printk("Q flag but no S flag?");
- }
- regs->ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
- /* Assume the SPC is valid and interesting. */
- regs->spc = oldspc;
-
- } else if (oldccs & (1 << (S_CCS_BITNR + CCS_SHIFT))) {
- /* If a h/w bp was set in the signal handler we need
- to keep the S flag. */
- regs->ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
- /* Don't keep the old SPC though; if we got here due to
- a single-step, the Q flag should have been set. */
- } else if (regs->spc) {
- /* If we were single-stepping *before* the signal was taken,
- we don't want to restore that state now, because GDB will
- have forgotten all about it. */
- regs->spc = 0;
- regs->ccs &= ~(1 << (S_CCS_BITNR + CCS_SHIFT));
- }
-}
-
-/* Set up the trampolines on the signal return page. */
-int __init
-cris_init_signal(void)
-{
- u16* data = kmalloc(PAGE_SIZE, GFP_KERNEL);
-
- /* This is movu.w __NR_sigreturn, r9; break 13; */
- data[0] = 0x9c5f;
- data[1] = __NR_sigreturn;
- data[2] = 0xe93d;
- /* This is movu.w __NR_rt_sigreturn, r9; break 13; */
- data[3] = 0x9c5f;
- data[4] = __NR_rt_sigreturn;
- data[5] = 0xe93d;
-
- /* Map to userspace with appropriate permissions (no write access...) */
- cris_signal_return_page = (unsigned long)
- __ioremap_prot(virt_to_phys(data), PAGE_SIZE, PAGE_SIGNAL_TRAMPOLINE);
-
- return 0;
-}
-
-__initcall(cris_init_signal);
diff --git a/arch/cris/arch-v32/kernel/time.c b/arch/cris/arch-v32/kernel/time.c
deleted file mode 100644
index d07a3912687e..000000000000
--- a/arch/cris/arch-v32/kernel/time.c
+++ /dev/null
@@ -1,345 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/cris/arch-v32/kernel/time.c
- *
- * Copyright (C) 2003-2010 Axis Communications AB
- *
- */
-
-#include <linux/timex.h>
-#include <linux/time.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/swap.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/cpufreq.h>
-#include <linux/sched_clock.h>
-#include <linux/mm.h>
-#include <asm/types.h>
-#include <asm/signal.h>
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irq_regs.h>
-
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/timer_defs.h>
-#include <hwregs/intr_vect_defs.h>
-#ifdef CONFIG_CRIS_MACH_ARTPEC3
-#include <hwregs/clkgen_defs.h>
-#endif
-
-/* Watchdog defines */
-#define ETRAX_WD_KEY_MASK 0x7F /* key is 7 bit */
-#define ETRAX_WD_HZ 763 /* watchdog counts at 763 Hz */
-/* Number of 763 counts before watchdog bites */
-#define ETRAX_WD_CNT ((2*ETRAX_WD_HZ)/HZ + 1)
-
-#define CRISV32_TIMER_FREQ (100000000lu)
-
-unsigned long timer_regs[NR_CPUS] =
-{
- regi_timer0,
-};
-
-extern int set_rtc_mmss(unsigned long nowtime);
-
-#ifdef CONFIG_CPU_FREQ
-static int cris_time_freq_notifier(struct notifier_block *nb,
- unsigned long val, void *data);
-
-static struct notifier_block cris_time_freq_notifier_block = {
- .notifier_call = cris_time_freq_notifier,
-};
-#endif
-
-unsigned long get_ns_in_jiffie(void)
-{
- reg_timer_r_tmr0_data data;
- unsigned long ns;
-
- data = REG_RD(timer, regi_timer0, r_tmr0_data);
- ns = (TIMER0_DIV - data) * 10;
- return ns;
-}
-
-/* From timer MDS describing the hardware watchdog:
- * 4.3.1 Watchdog Operation
- * The watchdog timer is an 8-bit timer with a configurable start value.
- * Once started the watchdog counts downwards with a frequency of 763 Hz
- * (100/131072 MHz). When the watchdog counts down to 1, it generates an
- * NMI (Non Maskable Interrupt), and when it counts down to 0, it resets the
- * chip.
- */
-/* This gives us 1.3 ms to do something useful when the NMI comes */
-
-/* Right now, starting the watchdog is the same as resetting it */
-#define start_watchdog reset_watchdog
-
-#if defined(CONFIG_ETRAX_WATCHDOG)
-static short int watchdog_key = 42; /* arbitrary 7 bit number */
-#endif
-
-/* Number of pages to consider "out of memory". It is normal that the memory
- * is used though, so set this really low. */
-#define WATCHDOG_MIN_FREE_PAGES 8
-
-#if defined(CONFIG_ETRAX_WATCHDOG_NICE_DOGGY)
-/* for reliable NICE_DOGGY behaviour */
-static int bite_in_progress;
-#endif
-
-void reset_watchdog(void)
-{
-#if defined(CONFIG_ETRAX_WATCHDOG)
- reg_timer_rw_wd_ctrl wd_ctrl = { 0 };
-
-#if defined(CONFIG_ETRAX_WATCHDOG_NICE_DOGGY)
- if (unlikely(bite_in_progress))
- return;
-#endif
- /* Only keep watchdog happy as long as we have memory left! */
- if(nr_free_pages() > WATCHDOG_MIN_FREE_PAGES) {
- /* Reset the watchdog with the inverse of the old key */
- /* Invert key, which is 7 bits */
- watchdog_key ^= ETRAX_WD_KEY_MASK;
- wd_ctrl.cnt = ETRAX_WD_CNT;
- wd_ctrl.cmd = regk_timer_start;
- wd_ctrl.key = watchdog_key;
- REG_WR(timer, regi_timer0, rw_wd_ctrl, wd_ctrl);
- }
-#endif
-}
-
-/* stop the watchdog - we still need the correct key */
-
-void stop_watchdog(void)
-{
-#if defined(CONFIG_ETRAX_WATCHDOG)
- reg_timer_rw_wd_ctrl wd_ctrl = { 0 };
- watchdog_key ^= ETRAX_WD_KEY_MASK; /* invert key, which is 7 bits */
- wd_ctrl.cnt = ETRAX_WD_CNT;
- wd_ctrl.cmd = regk_timer_stop;
- wd_ctrl.key = watchdog_key;
- REG_WR(timer, regi_timer0, rw_wd_ctrl, wd_ctrl);
-#endif
-}
-
-extern void show_registers(struct pt_regs *regs);
-
-void handle_watchdog_bite(struct pt_regs *regs)
-{
-#if defined(CONFIG_ETRAX_WATCHDOG)
- extern int cause_of_death;
-
- nmi_enter();
- oops_in_progress = 1;
-#if defined(CONFIG_ETRAX_WATCHDOG_NICE_DOGGY)
- bite_in_progress = 1;
-#endif
- printk(KERN_WARNING "Watchdog bite\n");
-
- /* Check if forced restart or unexpected watchdog */
- if (cause_of_death == 0xbedead) {
-#ifdef CONFIG_CRIS_MACH_ARTPEC3
- /* There is a bug in Artpec-3 (voodoo TR 78) that requires
- * us to go to lower frequency for the reset to be reliable
- */
- reg_clkgen_rw_clk_ctrl ctrl =
- REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
- ctrl.pll = 0;
- REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, ctrl);
-#endif
- while(1);
- }
-
- /* Unexpected watchdog, stop the watchdog and dump registers. */
- stop_watchdog();
- printk(KERN_WARNING "Oops: bitten by watchdog\n");
- show_registers(regs);
- oops_in_progress = 0;
- printk("\n"); /* Flush mtdoops. */
-#ifndef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
- reset_watchdog();
-#endif
- while(1) /* nothing */;
-#endif
-}
-
-extern void cris_profile_sample(struct pt_regs *regs);
-static void __iomem *timer_base;
-
-static int crisv32_clkevt_switch_state(struct clock_event_device *dev)
-{
- reg_timer_rw_tmr0_ctrl ctrl = {
- .op = regk_timer_hold,
- .freq = regk_timer_f100,
- };
-
- REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
- return 0;
-}
-
-static int crisv32_clkevt_next_event(unsigned long evt,
- struct clock_event_device *dev)
-{
- reg_timer_rw_tmr0_ctrl ctrl = {
- .op = regk_timer_ld,
- .freq = regk_timer_f100,
- };
-
- REG_WR(timer, timer_base, rw_tmr0_div, evt);
- REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
-
- ctrl.op = regk_timer_run;
- REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
-
- return 0;
-}
-
-static irqreturn_t crisv32_timer_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *evt = dev_id;
- reg_timer_rw_tmr0_ctrl ctrl = {
- .op = regk_timer_hold,
- .freq = regk_timer_f100,
- };
- reg_timer_rw_ack_intr ack = { .tmr0 = 1 };
- reg_timer_r_masked_intr intr;
-
- intr = REG_RD(timer, timer_base, r_masked_intr);
- if (!intr.tmr0)
- return IRQ_NONE;
-
- REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
- REG_WR(timer, timer_base, rw_ack_intr, ack);
-
- reset_watchdog();
-#ifdef CONFIG_SYSTEM_PROFILER
- cris_profile_sample(get_irq_regs());
-#endif
-
- evt->event_handler(evt);
-
- return IRQ_HANDLED;
-}
-
-static struct clock_event_device crisv32_clockevent = {
- .name = "crisv32-timer",
- .rating = 300,
- .features = CLOCK_EVT_FEAT_ONESHOT,
- .set_state_oneshot = crisv32_clkevt_switch_state,
- .set_state_shutdown = crisv32_clkevt_switch_state,
- .tick_resume = crisv32_clkevt_switch_state,
- .set_next_event = crisv32_clkevt_next_event,
-};
-
-/* Timer is IRQF_SHARED so drivers can add stuff to the timer irq chain. */
-static struct irqaction irq_timer = {
- .handler = crisv32_timer_interrupt,
- .flags = IRQF_TIMER | IRQF_SHARED,
- .name = "crisv32-timer",
- .dev_id = &crisv32_clockevent,
-};
-
-static u64 notrace crisv32_timer_sched_clock(void)
-{
- return REG_RD(timer, timer_base, r_time);
-}
-
-static void __init crisv32_timer_init(void)
-{
- reg_timer_rw_intr_mask timer_intr_mask;
- reg_timer_rw_tmr0_ctrl ctrl = {
- .op = regk_timer_hold,
- .freq = regk_timer_f100,
- };
-
- REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
-
- timer_intr_mask = REG_RD(timer, timer_base, rw_intr_mask);
- timer_intr_mask.tmr0 = 1;
- REG_WR(timer, timer_base, rw_intr_mask, timer_intr_mask);
-}
-
-void __init time_init(void)
-{
- int irq;
- int ret;
-
- /* Probe for the RTC and read it if it exists.
- * Before the RTC can be probed the loops_per_usec variable needs
- * to be initialized to make usleep work. A better value for
- * loops_per_usec is calculated by the kernel later once the
- * clock has started.
- */
- loops_per_usec = 50;
-
- irq = TIMER0_INTR_VECT;
- timer_base = (void __iomem *) regi_timer0;
-
- crisv32_timer_init();
-
- sched_clock_register(crisv32_timer_sched_clock, 32,
- CRISV32_TIMER_FREQ);
-
- clocksource_mmio_init(timer_base + REG_RD_ADDR_timer_r_time,
- "crisv32-timer", CRISV32_TIMER_FREQ,
- 300, 32, clocksource_mmio_readl_up);
-
- crisv32_clockevent.cpumask = cpu_possible_mask;
- crisv32_clockevent.irq = irq;
-
- ret = setup_irq(irq, &irq_timer);
- if (ret)
- pr_warn("failed to setup irq %d\n", irq);
-
- clockevents_config_and_register(&crisv32_clockevent,
- CRISV32_TIMER_FREQ,
- 2, 0xffffffff);
-
- /* Enable watchdog if we should use one. */
-
-#if defined(CONFIG_ETRAX_WATCHDOG)
- printk(KERN_INFO "Enabling watchdog...\n");
- start_watchdog();
-
- /* If we use the hardware watchdog, we want to trap it as an NMI
- * and dump registers before it resets us. For this to happen, we
- * must set the "m" NMI enable flag (which once set, is unset only
- * when an NMI is taken). */
- {
- unsigned long flags;
- local_save_flags(flags);
- flags |= (1<<30); /* NMI M flag is at bit 30 */
- local_irq_restore(flags);
- }
-#endif
-
-#ifdef CONFIG_CPU_FREQ
- cpufreq_register_notifier(&cris_time_freq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
-#endif
-}
-
-#ifdef CONFIG_CPU_FREQ
-static int cris_time_freq_notifier(struct notifier_block *nb,
- unsigned long val, void *data)
-{
- struct cpufreq_freqs *freqs = data;
- if (val == CPUFREQ_POSTCHANGE) {
- reg_timer_r_tmr0_data data;
- reg_timer_rw_tmr0_div div = (freqs->new * 500) / HZ;
- do {
- data = REG_RD(timer, timer_regs[freqs->cpu],
- r_tmr0_data);
- } while (data > 20);
- REG_WR(timer, timer_regs[freqs->cpu], rw_tmr0_div, div);
- }
- return 0;
-}
-#endif
diff --git a/arch/cris/arch-v32/kernel/traps.c b/arch/cris/arch-v32/kernel/traps.c
deleted file mode 100644
index ba54c7eccbaa..000000000000
--- a/arch/cris/arch-v32/kernel/traps.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2003-2006, Axis Communications AB.
- */
-
-#include <linux/ptrace.h>
-#include <linux/extable.h>
-#include <linux/uaccess.h>
-#include <linux/sched/debug.h>
-
-#include <hwregs/supp_reg.h>
-#include <hwregs/intr_vect_defs.h>
-#include <asm/irq.h>
-
-void show_registers(struct pt_regs *regs)
-{
- /*
- * It's possible to use either the USP register or current->thread.usp.
- * USP might not correspond to the current process for all cases this
- * function is called, and current->thread.usp isn't up to date for the
- * current process. Experience shows that using USP is the way to go.
- */
- unsigned long usp = rdusp();
- unsigned long d_mmu_cause;
- unsigned long i_mmu_cause;
-
- printk("CPU: %d\n", smp_processor_id());
-
- printk("ERP: %08lx SRP: %08lx CCS: %08lx USP: %08lx MOF: %08lx\n",
- regs->erp, regs->srp, regs->ccs, usp, regs->mof);
-
- printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
- regs->r0, regs->r1, regs->r2, regs->r3);
-
- printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
- regs->r4, regs->r5, regs->r6, regs->r7);
-
- printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
- regs->r8, regs->r9, regs->r10, regs->r11);
-
- printk("r12: %08lx r13: %08lx oR10: %08lx acr: %08lx\n",
- regs->r12, regs->r13, regs->orig_r10, regs->acr);
-
- printk(" sp: %08lx\n", (unsigned long)regs);
-
- SUPP_BANK_SEL(BANK_IM);
- SUPP_REG_RD(RW_MM_CAUSE, i_mmu_cause);
-
- SUPP_BANK_SEL(BANK_DM);
- SUPP_REG_RD(RW_MM_CAUSE, d_mmu_cause);
-
- printk(" Data MMU Cause: %08lx\n", d_mmu_cause);
- printk("Instruction MMU Cause: %08lx\n", i_mmu_cause);
-
- printk("Process %s (pid: %d, stackpage=%08lx)\n",
- current->comm, current->pid, (unsigned long)current);
-
- /*
- * When in-kernel, we also print out the stack and code at the
- * time of the fault..
- */
- if (!user_mode(regs)) {
- int i;
-
- show_stack(NULL, (unsigned long *)usp);
-
- /*
- * If the previous stack-dump wasn't a kernel one, dump the
- * kernel stack now.
- */
- if (usp != 0)
- show_stack(NULL, NULL);
-
- printk("\nCode: ");
-
- if (regs->erp < PAGE_OFFSET)
- goto bad_value;
-
- /*
- * Quite often the value at regs->erp doesn't point to the
- * interesting instruction, which often is the previous
- * instruction. So dump at an offset large enough that the
- * instruction decoding should be in sync at the interesting
- * point, but small enough to fit on a row. The regs->erp
- * location is pointed out in a ksymoops-friendly way by
- * wrapping the byte for that address in parenthesises.
- */
- for (i = -12; i < 12; i++) {
- unsigned char c;
-
- if (__get_user(c, &((unsigned char *)regs->erp)[i])) {
-bad_value:
- printk(" Bad IP value.");
- break;
- }
-
- if (i == 0)
- printk("(%02x) ", c);
- else
- printk("%02x ", c);
- }
- printk("\n");
- }
-}
-
-void arch_enable_nmi(void)
-{
- unsigned long flags;
-
- local_save_flags(flags);
- flags |= (1 << 30); /* NMI M flag is at bit 30 */
- local_irq_restore(flags);
-}
-
-extern void (*nmi_handler)(struct pt_regs *);
-void handle_nmi(struct pt_regs *regs)
-{
-#ifdef CONFIG_ETRAXFS
- reg_intr_vect_r_nmi r;
-#endif
-
- if (nmi_handler)
- nmi_handler(regs);
-
-#ifdef CONFIG_ETRAXFS
- /* Wait until nmi is no longer active. */
- do {
- r = REG_RD(intr_vect, regi_irq, r_nmi);
- } while (r.ext == regk_intr_vect_on);
-#endif
-}
-
-
-#ifdef CONFIG_BUG
-extern void die_if_kernel(const char *str, struct pt_regs *regs, long err);
-
-/* Copy of the regs at BUG() time. */
-struct pt_regs BUG_regs;
-
-void do_BUG(char *file, unsigned int line)
-{
- printk("kernel BUG at %s:%d!\n", file, line);
- die_if_kernel("Oops", &BUG_regs, 0);
-}
-EXPORT_SYMBOL(do_BUG);
-
-void fixup_BUG(struct pt_regs *regs)
-{
- BUG_regs = *regs;
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
- /*
- * Fixup the BUG arguments through exception handlers.
- */
- {
- const struct exception_table_entry *fixup;
-
- /*
- * ERP points at the "break 14" + 2, compensate for the 2
- * bytes.
- */
- fixup = search_exception_tables(instruction_pointer(regs) - 2);
- if (fixup) {
- /* Adjust the instruction pointer in the stackframe. */
- instruction_pointer(regs) = fixup->fixup;
- arch_fixup(regs);
- }
- }
-#else
- /* Dont try to lookup the filename + line, just dump regs. */
- do_BUG("unknown", 0);
-#endif
-}
-
-/*
- * Break 14 handler. Save regs and jump into the fixup_BUG.
- */
-__asm__ ( ".text\n\t"
- ".global breakh_BUG\n\t"
- "breakh_BUG:\n\t"
- SAVE_ALL
- KGDB_FIXUP
- "move.d $sp, $r10\n\t"
- "jsr fixup_BUG\n\t"
- "nop\n\t"
- "jump ret_from_intr\n\t"
- "nop\n\t");
-
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-void
-handle_BUG(struct pt_regs *regs)
-{
-}
-#endif
-#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-15 04:13:30 +0300