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xtensa: ISS: update kernel command line in platform_setup

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Move platform_setup call higher in initialization sequence so that it
could change kernel command line.
Check command line passed to simulator in ISS platform_stup and update
kernel command line if there's anything.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2017-03-13 10:34:36 -07:00
parent e8cd8da934
commit fbe22d2800
2 changed files with 23 additions and 3 deletions
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5
arch/xtensa/kernel/setup.c
View File

@ -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 */
@ -379,8 +380,6 @@ void __init setup_arch(char **cmdline_p)
unflatten_and_copy_device_tree();
platform_setup(cmdline_p);
#ifdef CONFIG_SMP
smp_init_cpus();
#endif

21
arch/xtensa/platforms/iss/setup.c
View File

@ -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>
@ -76,5 +78,24 @@ static struct notifier_block iss_panic_block = {
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);
}