diff options
Diffstat (limited to 'arch/mips/lemote/lm2e')
| -rw-r--r-- | arch/mips/lemote/lm2e/Makefile | 7 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/bonito-irq.c | 74 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/dbg_io.c | 146 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/irq.c | 145 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/mem.c | 23 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/pci.c | 93 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/prom.c | 104 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/reset.c | 41 | ||||
| -rw-r--r-- | arch/mips/lemote/lm2e/setup.c | 134 |
9 files changed, 767 insertions, 0 deletions
diff --git a/arch/mips/lemote/lm2e/Makefile b/arch/mips/lemote/lm2e/Makefile new file mode 100644 index 000000000000..fb1b48c48cb3 --- /dev/null +++ b/arch/mips/lemote/lm2e/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for Lemote Fulong mini-PC board. +# + +obj-y += setup.o prom.o reset.o irq.o pci.o bonito-irq.o dbg_io.o mem.o +EXTRA_AFLAGS := $(CFLAGS) + diff --git a/arch/mips/lemote/lm2e/bonito-irq.c b/arch/mips/lemote/lm2e/bonito-irq.c new file mode 100644 index 000000000000..8fc3bce7075b --- /dev/null +++ b/arch/mips/lemote/lm2e/bonito-irq.c @@ -0,0 +1,74 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net + * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org) + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include <asm/mips-boards/bonito64.h> + + +static inline void bonito_irq_enable(unsigned int irq) +{ + BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE)); + mmiowb(); +} + +static inline void bonito_irq_disable(unsigned int irq) +{ + BONITO_INTENCLR = (1 << (irq - BONITO_IRQ_BASE)); + mmiowb(); +} + +static struct irq_chip bonito_irq_type = { + .name = "bonito_irq", + .ack = bonito_irq_disable, + .mask = bonito_irq_disable, + .mask_ack = bonito_irq_disable, + .unmask = bonito_irq_enable, +}; + +static struct irqaction dma_timeout_irqaction = { + .handler = no_action, + .name = "dma_timeout", +}; + +void bonito_irq_init(void) +{ + u32 i; + + for (i = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++) { + set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq); + } + + setup_irq(BONITO_IRQ_BASE + 10, &dma_timeout_irqaction); +} diff --git a/arch/mips/lemote/lm2e/dbg_io.c b/arch/mips/lemote/lm2e/dbg_io.c new file mode 100644 index 000000000000..6c95da3ca76f --- /dev/null +++ b/arch/mips/lemote/lm2e/dbg_io.c @@ -0,0 +1,146 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net + * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org) + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/io.h> +#include <linux/init.h> +#include <linux/types.h> + +#include <asm/serial.h> + +#define UART16550_BAUD_2400 2400 +#define UART16550_BAUD_4800 4800 +#define UART16550_BAUD_9600 9600 +#define UART16550_BAUD_19200 19200 +#define UART16550_BAUD_38400 38400 +#define UART16550_BAUD_57600 57600 +#define UART16550_BAUD_115200 115200 + +#define UART16550_PARITY_NONE 0 +#define UART16550_PARITY_ODD 0x08 +#define UART16550_PARITY_EVEN 0x18 +#define UART16550_PARITY_MARK 0x28 +#define UART16550_PARITY_SPACE 0x38 + +#define UART16550_DATA_5BIT 0x0 +#define UART16550_DATA_6BIT 0x1 +#define UART16550_DATA_7BIT 0x2 +#define UART16550_DATA_8BIT 0x3 + +#define UART16550_STOP_1BIT 0x0 +#define UART16550_STOP_2BIT 0x4 + +/* ----------------------------------------------------- */ + +/* === CONFIG === */ +#ifdef CONFIG_64BIT +#define BASE (0xffffffffbfd003f8) +#else +#define BASE (0xbfd003f8) +#endif + +#define MAX_BAUD BASE_BAUD +/* === END OF CONFIG === */ + +#define REG_OFFSET 1 + +/* register offset */ +#define OFS_RCV_BUFFER 0 +#define OFS_TRANS_HOLD 0 +#define OFS_SEND_BUFFER 0 +#define OFS_INTR_ENABLE (1*REG_OFFSET) +#define OFS_INTR_ID (2*REG_OFFSET) +#define OFS_DATA_FORMAT (3*REG_OFFSET) +#define OFS_LINE_CONTROL (3*REG_OFFSET) +#define OFS_MODEM_CONTROL (4*REG_OFFSET) +#define OFS_RS232_OUTPUT (4*REG_OFFSET) +#define OFS_LINE_STATUS (5*REG_OFFSET) +#define OFS_MODEM_STATUS (6*REG_OFFSET) +#define OFS_RS232_INPUT (6*REG_OFFSET) +#define OFS_SCRATCH_PAD (7*REG_OFFSET) + +#define OFS_DIVISOR_LSB (0*REG_OFFSET) +#define OFS_DIVISOR_MSB (1*REG_OFFSET) + +/* memory-mapped read/write of the port */ +#define UART16550_READ(y) readb((char *)BASE + (y)) +#define UART16550_WRITE(y, z) writeb(z, (char *)BASE + (y)) + +void debugInit(u32 baud, u8 data, u8 parity, u8 stop) +{ + u32 divisor; + + /* disable interrupts */ + UART16550_WRITE(OFS_INTR_ENABLE, 0); + + /* set up buad rate */ + /* set DIAB bit */ + UART16550_WRITE(OFS_LINE_CONTROL, 0x80); + + /* set divisor */ + divisor = MAX_BAUD / baud; + UART16550_WRITE(OFS_DIVISOR_LSB, divisor & 0xff); + UART16550_WRITE(OFS_DIVISOR_MSB, (divisor & 0xff00) >> 8); + + /* clear DIAB bit */ + UART16550_WRITE(OFS_LINE_CONTROL, 0x0); + + /* set data format */ + UART16550_WRITE(OFS_DATA_FORMAT, data | parity | stop); +} + +static int remoteDebugInitialized; + +u8 getDebugChar(void) +{ + if (!remoteDebugInitialized) { + remoteDebugInitialized = 1; + debugInit(UART16550_BAUD_115200, + UART16550_DATA_8BIT, + UART16550_PARITY_NONE, UART16550_STOP_1BIT); + } + + while ((UART16550_READ(OFS_LINE_STATUS) & 0x1) == 0) ; + return UART16550_READ(OFS_RCV_BUFFER); +} + +int putDebugChar(u8 byte) +{ + if (!remoteDebugInitialized) { + remoteDebugInitialized = 1; + /* + debugInit(UART16550_BAUD_115200, + UART16550_DATA_8BIT, + UART16550_PARITY_NONE, UART16550_STOP_1BIT); */ + } + + while ((UART16550_READ(OFS_LINE_STATUS) & 0x20) == 0) ; + UART16550_WRITE(OFS_SEND_BUFFER, byte); + return 1; +} diff --git a/arch/mips/lemote/lm2e/irq.c b/arch/mips/lemote/lm2e/irq.c new file mode 100644 index 000000000000..05693bceaeaf --- /dev/null +++ b/arch/mips/lemote/lm2e/irq.c @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include <asm/irq_cpu.h> +#include <asm/i8259.h> +#include <asm/mipsregs.h> +#include <asm/mips-boards/bonito64.h> + + +/* + * the first level int-handler will jump here if it is a bonito irq + */ +static void bonito_irqdispatch(void) +{ + u32 int_status; + int i; + + /* workaround the IO dma problem: let cpu looping to allow DMA finish */ + int_status = BONITO_INTISR; + if (int_status & (1 << 10)) { + while (int_status & (1 << 10)) { + udelay(1); + int_status = BONITO_INTISR; + } + } + + /* Get pending sources, masked by current enables */ + int_status = BONITO_INTISR & BONITO_INTEN; + + if (int_status != 0) { + i = __ffs(int_status); + int_status &= ~(1 << i); + do_IRQ(BONITO_IRQ_BASE + i); + } +} + +static void i8259_irqdispatch(void) +{ + int irq; + + irq = i8259_irq(); + if (irq >= 0) { + do_IRQ(irq); + } else { + spurious_interrupt(); + } + +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; + + if (pending & CAUSEF_IP7) { + do_IRQ(MIPS_CPU_IRQ_BASE + 7); + } else if (pending & CAUSEF_IP5) { + i8259_irqdispatch(); + } else if (pending & CAUSEF_IP2) { + bonito_irqdispatch(); + } else { + spurious_interrupt(); + } +} + +static struct irqaction cascade_irqaction = { + .handler = no_action, + .mask = CPU_MASK_NONE, + .name = "cascade", +}; + +void __init arch_init_irq(void) +{ + extern void bonito_irq_init(void); + + /* + * Clear all of the interrupts while we change the able around a bit. + * int-handler is not on bootstrap + */ + clear_c0_status(ST0_IM | ST0_BEV); + local_irq_disable(); + + /* most bonito irq should be level triggered */ + BONITO_INTEDGE = BONITO_ICU_SYSTEMERR | BONITO_ICU_MASTERERR | + BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES; + BONITO_INTSTEER = 0; + + /* + * Mask out all interrupt by writing "1" to all bit position in + * the interrupt reset reg. + */ + BONITO_INTENCLR = ~0; + + /* init all controller + * 0-15 ------> i8259 interrupt + * 16-23 ------> mips cpu interrupt + * 32-63 ------> bonito irq + */ + + /* Sets the first-level interrupt dispatcher. */ + mips_cpu_irq_init(); + init_i8259_irqs(); + bonito_irq_init(); + + /* + printk("GPIODATA=%x, GPIOIE=%x\n", BONITO_GPIODATA, BONITO_GPIOIE); + printk("INTEN=%x, INTSET=%x, INTCLR=%x, INTISR=%x\n", + BONITO_INTEN, BONITO_INTENSET, + BONITO_INTENCLR, BONITO_INTISR); + */ + + /* bonito irq at IP2 */ + setup_irq(MIPS_CPU_IRQ_BASE + 2, &cascade_irqaction); + /* 8259 irq at IP5 */ + setup_irq(MIPS_CPU_IRQ_BASE + 5, &cascade_irqaction); + +} diff --git a/arch/mips/lemote/lm2e/mem.c b/arch/mips/lemote/lm2e/mem.c new file mode 100644 index 000000000000..16cd21587d34 --- /dev/null +++ b/arch/mips/lemote/lm2e/mem.c @@ -0,0 +1,23 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/fs.h> +#include <linux/fcntl.h> +#include <linux/mm.h> + +/* override of arch/mips/mm/cache.c: __uncached_access */ +int __uncached_access(struct file *file, unsigned long addr) +{ + if (file->f_flags & O_SYNC) + return 1; + + /* + * On the Lemote Loongson 2e system, the peripheral registers + * reside between 0x1000:0000 and 0x2000:0000. + */ + return addr >= __pa(high_memory) || + ((addr >= 0x10000000) && (addr < 0x20000000)); +} diff --git a/arch/mips/lemote/lm2e/pci.c b/arch/mips/lemote/lm2e/pci.c new file mode 100644 index 000000000000..1ade1cef3899 --- /dev/null +++ b/arch/mips/lemote/lm2e/pci.c @@ -0,0 +1,93 @@ +/* + * pci.c + * + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/mips-boards/bonito64.h> + +extern struct pci_ops bonito64_pci_ops; + +static struct resource loongson2e_pci_mem_resource = { + .name = "LOONGSON2E PCI MEM", + .start = 0x14000000UL, + .end = 0x1fffffffUL, + .flags = IORESOURCE_MEM, +}; + +static struct resource loongson2e_pci_io_resource = { + .name = "LOONGSON2E PCI IO MEM", + .start = 0x00004000UL, + .end = IO_SPACE_LIMIT, + .flags = IORESOURCE_IO, +}; + +static struct pci_controller loongson2e_pci_controller = { + .pci_ops = &bonito64_pci_ops, + .io_resource = &loongson2e_pci_io_resource, + .mem_resource = &loongson2e_pci_mem_resource, + .mem_offset = 0x00000000UL, + .io_offset = 0x00000000UL, +}; + +static void __init ict_pcimap(void) +{ + /* + * local to PCI mapping: [256M,512M] -> [256M,512M]; differ from PMON + * + * CPU address space [256M,448M] is window for accessing pci space + * we set pcimap_lo[0,1,2] to map it to pci space [256M,448M] + * pcimap: bit18,pcimap_2; bit[17-12],lo2;bit[11-6],lo1;bit[5-0],lo0 + */ + /* 1,00 0110 ,0001 01,00 0000 */ + BONITO_PCIMAP = 0x46140; + + /* 1, 00 0010, 0000,01, 00 0000 */ + /* BONITO_PCIMAP = 0x42040; */ + + /* + * PCI to local mapping: [2G,2G+256M] -> [0,256M] + */ + BONITO_PCIBASE0 = 0x80000000; + BONITO_PCIBASE1 = 0x00800000; + BONITO_PCIBASE2 = 0x90000000; + +} + +static int __init pcibios_init(void) +{ + extern int pci_probe_only; + pci_probe_only = 0; + + ict_pcimap(); + register_pci_controller(&loongson2e_pci_controller); + + return 0; +} + +arch_initcall(pcibios_init); diff --git a/arch/mips/lemote/lm2e/prom.c b/arch/mips/lemote/lm2e/prom.c new file mode 100644 index 000000000000..67312d7acf2a --- /dev/null +++ b/arch/mips/lemote/lm2e/prom.c @@ -0,0 +1,104 @@ +/* + * Based on Ocelot Linux port, which is + * Copyright 2001 MontaVista Software Inc. + * Author: jsun@mvista.com or jsun@junsun.net + * + * Copyright 2003 ICT CAS + * Author: Michael Guo <guoyi@ict.ac.cn> + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/bootmem.h> + +#include <asm/addrspace.h> +#include <asm/bootinfo.h> + +extern unsigned long bus_clock; +extern unsigned long cpu_clock; +extern unsigned int memsize, highmemsize; +extern int putDebugChar(unsigned char byte); + +static int argc; +/* pmon passes arguments in 32bit pointers */ +static int *arg; +static int *env; + +const char *get_system_type(void) +{ + return "lemote-fulong"; +} + +void __init prom_init_cmdline(void) +{ + int i; + long l; + + /* arg[0] is "g", the rest is boot parameters */ + arcs_cmdline[0] = '\0'; + for (i = 1; i < argc; i++) { + l = (long)arg[i]; + if (strlen(arcs_cmdline) + strlen(((char *)l) + 1) + >= sizeof(arcs_cmdline)) + break; + strcat(arcs_cmdline, ((char *)l)); + strcat(arcs_cmdline, " "); + } +} + +void __init prom_init(void) +{ + long l; + argc = fw_arg0; + arg = (int *)fw_arg1; + env = (int *)fw_arg2; + + mips_machgroup = MACH_GROUP_LEMOTE; + mips_machtype = MACH_LEMOTE_FULONG; + + prom_init_cmdline(); + + if ((strstr(arcs_cmdline, "console=")) == NULL) + strcat(arcs_cmdline, " console=ttyS0,115200"); + if ((strstr(arcs_cmdline, "root=")) == NULL) + strcat(arcs_cmdline, " root=/dev/hda1"); + +#define parse_even_earlier(res, option, p) \ +do { \ + if (strncmp(option, (char *)p, strlen(option)) == 0) \ + res = simple_strtol((char *)p + strlen(option"="), \ + NULL, 10); \ +} while (0) + + l = (long)*env; + while (l != 0) { + parse_even_earlier(bus_clock, "busclock", l); + parse_even_earlier(cpu_clock, "cpuclock", l); + parse_even_earlier(memsize, "memsize", l); + parse_even_earlier(highmemsize, "highmemsize", l); + env++; + l = (long)*env; + } + if (memsize == 0) + memsize = 256; + + pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n", + bus_clock, cpu_clock, memsize, highmemsize); +} + +void __init prom_free_prom_memory(void) +{ +} + +void prom_putchar(char c) +{ + putDebugChar(c); +} diff --git a/arch/mips/lemote/lm2e/reset.c b/arch/mips/lemote/lm2e/reset.c new file mode 100644 index 000000000000..099387a3827a --- /dev/null +++ b/arch/mips/lemote/lm2e/reset.c @@ -0,0 +1,41 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + */ +#include <linux/pm.h> + +#include <asm/reboot.h> + +static void loongson2e_restart(char *command) +{ +#ifdef CONFIG_32BIT + *(unsigned long *)0xbfe00104 &= ~(1 << 2); + *(unsigned long *)0xbfe00104 |= (1 << 2); +#else + *(unsigned long *)0xffffffffbfe00104 &= ~(1 << 2); + *(unsigned long *)0xffffffffbfe00104 |= (1 << 2); +#endif + __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000)); +} + +static void loongson2e_halt(void) +{ + while (1) ; +} + +static void loongson2e_power_off(void) +{ + loongson2e_halt(); +} + +void mips_reboot_setup(void) +{ + _machine_restart = loongson2e_restart; + _machine_halt = loongson2e_halt; + pm_power_off = loongson2e_power_off; +} diff --git a/arch/mips/lemote/lm2e/setup.c b/arch/mips/lemote/lm2e/setup.c new file mode 100644 index 000000000000..0e4d1fa572b5 --- /dev/null +++ b/arch/mips/lemote/lm2e/setup.c @@ -0,0 +1,134 @@ +/* + * BRIEF MODULE DESCRIPTION + * setup.c - board dependent boot routines + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/bootmem.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/mc146818rtc.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/tty.h> +#include <linux/types.h> + +#include <asm/bootinfo.h> +#include <asm/mc146818-time.h> +#include <asm/time.h> +#include <asm/wbflush.h> + +#ifdef CONFIG_VT +#include <linux/console.h> +#include <linux/screen_info.h> +#endif + +extern void mips_reboot_setup(void); + +#ifdef CONFIG_64BIT +#define PTR_PAD(p) ((0xffffffff00000000)|((unsigned long long)(p))) +#else +#define PTR_PAD(p) (p) +#endif + +unsigned long cpu_clock; +unsigned long bus_clock; +unsigned int memsize; +unsigned int highmemsize = 0; + +void __init plat_timer_setup(struct irqaction *irq) +{ + setup_irq(MIPS_CPU_IRQ_BASE + 7, irq); +} + +static void __init loongson2e_time_init(void) +{ + /* setup mips r4k timer */ + mips_hpt_frequency = cpu_clock / 2; +} + +static unsigned long __init mips_rtc_get_time(void) +{ + return mc146818_get_cmos_time(); +} + +void (*__wbflush)(void); +EXPORT_SYMBOL(__wbflush); + +static void wbflush_loongson2e(void) +{ + asm(".set\tpush\n\t" + ".set\tnoreorder\n\t" + ".set mips3\n\t" + "sync\n\t" + "nop\n\t" + ".set\tpop\n\t" + ".set mips0\n\t"); +} + +void __init plat_mem_setup(void) +{ + set_io_port_base(PTR_PAD(0xbfd00000)); + + mips_reboot_setup(); + + board_time_init = loongson2e_time_init; + rtc_mips_get_time = mips_rtc_get_time; + + __wbflush = wbflush_loongson2e; + + add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM); +#ifdef CONFIG_64BIT + if (highmemsize > 0) { + add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM); + } +#endif + +#ifdef CONFIG_VT +#if defined(CONFIG_VGA_CONSOLE) + conswitchp = &vga_con; + + screen_info = (struct screen_info) { + 0, 25, /* orig-x, orig-y */ + 0, /* unused */ + 0, /* orig-video-page */ + 0, /* orig-video-mode */ + 80, /* orig-video-cols */ + 0, 0, 0, /* ega_ax, ega_bx, ega_cx */ + 25, /* orig-video-lines */ + VIDEO_TYPE_VGAC, /* orig-video-isVGA */ + 16 /* orig-video-points */ + }; +#elif defined(CONFIG_DUMMY_CONSOLE) + conswitchp = &dummy_con; +#endif +#endif + +} |