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authorMax Filippov <jcmvbkbc@gmail.com>2017-05-07 20:39:03 +0300
committerMax Filippov <jcmvbkbc@gmail.com>2017-05-07 20:39:03 +0300
commit2a4e669dd611855d89d938063c10f44cb67ce65d (patch)
treed40467ef42c71879339c11063e74155bc2f2c628 /arch
parent062b1c19b879e7831cbceb599ab1d758f87eda40 (diff)
parentfbe22d280014e783fe2454db2a0ba44fc4f68a5a (diff)
downloadlinux-2a4e669dd611855d89d938063c10f44cb67ce65d.tar.xz
Merge branch 'xtensa-sim-params' into xtensa-fixes
Diffstat (limited to 'arch')
-rw-r--r--arch/xtensa/kernel/setup.c5
-rw-r--r--arch/xtensa/platforms/iss/include/platform/simcall.h20
-rw-r--r--arch/xtensa/platforms/iss/setup.c43
3 files changed, 45 insertions, 23 deletions
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index fd33920e1a19..394ef08300b6 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -317,8 +317,9 @@ static inline int mem_reserve(unsigned long start, unsigned long end)
void __init setup_arch(char **cmdline_p)
{
- strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
+ platform_setup(cmdline_p);
+ strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
/* Reserve some memory regions */
@@ -382,8 +383,6 @@ void __init setup_arch(char **cmdline_p)
unflatten_and_copy_device_tree();
- platform_setup(cmdline_p);
-
#ifdef CONFIG_SMP
smp_init_cpus();
#endif
diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h
index 27d7a528b41a..2ba45858e50a 100644
--- a/arch/xtensa/platforms/iss/include/platform/simcall.h
+++ b/arch/xtensa/platforms/iss/include/platform/simcall.h
@@ -6,6 +6,7 @@
* for more details.
*
* Copyright (C) 2001 Tensilica Inc.
+ * Copyright (C) 2017 Cadence Design Systems Inc.
*/
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
@@ -49,6 +50,10 @@
#define SYS_bind 30
#define SYS_ioctl 31
+#define SYS_iss_argc 1000 /* returns value of argc */
+#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
+#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
+
/*
* SYS_select_one specifiers
*/
@@ -118,5 +123,20 @@ static inline int simc_lseek(int fd, uint32_t off, int whence)
return __simc(SYS_lseek, fd, off, whence);
}
+static inline int simc_argc(void)
+{
+ return __simc(SYS_iss_argc, 0, 0, 0);
+}
+
+static inline int simc_argv_size(void)
+{
+ return __simc(SYS_iss_argv_size, 0, 0, 0);
+}
+
+static inline void simc_argv(void *buf)
+{
+ __simc(SYS_iss_set_argv, (int)buf, 0, 0);
+}
+
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index 379aeddcc638..f4bbb28026f8 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -8,6 +8,7 @@
* Joe Taylor <joe@tensilica.com>
*
* Copyright 2001 - 2005 Tensilica Inc.
+ * Copyright 2017 Cadence Design Systems Inc.
*
* 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
@@ -15,6 +16,7 @@
* option) any later version.
*
*/
+#include <linux/bootmem.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
@@ -31,13 +33,13 @@
#include <asm/platform.h>
#include <asm/bootparam.h>
+#include <asm/setup.h>
#include <platform/simcall.h>
void __init platform_init(bp_tag_t* bootparam)
{
-
}
void platform_halt(void)
@@ -59,26 +61,10 @@ void platform_restart(void)
/* control never gets here */
}
-extern void iss_net_poll(void);
-
-const char twirl[]="|/-\\|/-\\";
-
void platform_heartbeat(void)
{
-#if 0
- static int i = 0, j = 0;
-
- if (--i < 0) {
- i = 99;
- printk("\r%c\r", twirl[j++]);
- if (j == 8)
- j = 0;
- }
-#endif
}
-
-
static int
iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
{
@@ -87,12 +73,29 @@ iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
}
static struct notifier_block iss_panic_block = {
- iss_panic_event,
- NULL,
- 0
+ .notifier_call = iss_panic_event,
};
void __init platform_setup(char **p_cmdline)
{
+ int argc = simc_argc();
+ int argv_size = simc_argv_size();
+
+ if (argc > 1) {
+ void **argv = alloc_bootmem(argv_size);
+ char *cmdline = alloc_bootmem(argv_size);
+ int i;
+
+ cmdline[0] = 0;
+ simc_argv((void *)argv);
+
+ for (i = 1; i < argc; ++i) {
+ if (i > 1)
+ strcat(cmdline, " ");
+ strcat(cmdline, argv[i]);
+ }
+ *p_cmdline = cmdline;
+ }
+
atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
}