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/*
* kexec-sh.c - kexec for the SH
* Copyright (C) 2004 kogiidena@eggplant.ddo.jp
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#define _GNU_SOURCE
#include <stddef.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include "../../kexec.h"
#include "../../kexec-syscall.h"
#include "kexec-sh.h"
#include <arch/options.h>
#define MAX_MEMORY_RANGES 64
static struct memory_range memory_range[MAX_MEMORY_RANGES];
static int kexec_sh_memory_range_callback(void *data, int nr,
char *str,
unsigned long base,
unsigned long length)
{
if (nr < MAX_MEMORY_RANGES) {
memory_range[nr].start = base;
memory_range[nr].end = base + length - 1;
memory_range[nr].type = RANGE_RAM;
return 0;
}
return 1;
}
/* Return a sorted list of available memory ranges. */
int get_memory_ranges(struct memory_range **range, int *ranges,
unsigned long kexec_flags)
{
int nr;
nr = kexec_iomem_for_each_line("System RAM\n",
kexec_sh_memory_range_callback, NULL);
*range = memory_range;
*ranges = nr;
return 0;
}
/* Supported file types and callbacks */
struct file_type file_type[] = {
{"zImage-sh", zImage_sh_probe, zImage_sh_load, zImage_sh_usage},
{"netbsd-sh", netbsd_sh_probe, netbsd_sh_load, netbsd_sh_usage},
};
int file_types = sizeof(file_type) / sizeof(file_type[0]);
void arch_usage(void)
{
printf(
" none\n\n"
"Default options:\n"
" --append=\"%s\"\n"
" --empty-zero=0x%08x\n\n"
" STRING of --appned is set form /proc/cmdline as default.\n"
" ADDRESS of --empty-zero can be set SHELL environment variable\n"
" KEXEC_EMPTY_ZERO as default.\n\n"
" ADDRESS can be get in the following method in your system. \n"
" 1) \"grep empty_zero /proc/kallsyms\". \n"
" 2) \"grep empty_zero System.map\". \n"
" 3) CONFIG_MEMORY_START + CONFIG_ZERO_PAGE_OFFSET in your kernel\n"
" config file.\n"
,get_append(), (unsigned int) get_empty_zero(NULL));
}
int arch_process_options(int argc, char **argv)
{
static const struct option options[] = {
KEXEC_ARCH_OPTIONS
{ 0, 0, NULL, 0 },
};
static const char short_options[] = KEXEC_ARCH_OPT_STR;
int opt;
opterr = 0; /* Don't complain about unrecognized options here */
while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
switch(opt) {
default:
/* Ignore core options */
if (opt < OPT_MAX) {
break;
}
case '?':
usage();
return -1;
case OPT_APPEND:
case OPT_NBSD_HOWTO:
case OPT_NBSD_MROOT:
;
}
}
/* Reset getopt for the next pass; called in other source modules */
opterr = 1;
optind = 1;
return 0;
}
const struct arch_map_entry arches[] = {
/* For compatibility with older patches
* use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_SH here.
*/
{ "sh3", KEXEC_ARCH_DEFAULT },
{ "sh4", KEXEC_ARCH_DEFAULT },
{ "sh4a", KEXEC_ARCH_DEFAULT },
{ "sh4al-dsp", KEXEC_ARCH_DEFAULT },
{ 0 },
};
int arch_compat_trampoline(struct kexec_info *info)
{
return 0;
}
void arch_update_purgatory(struct kexec_info *info)
{
}
unsigned long get_empty_zero(char *s)
{
char *env;
env = getenv("KEXEC_EMPTY_ZERO");
if(s){
env = s;
}else if(!env){
env = "0x0c001000";
}
return 0x1fffffff & strtoul(env,(char **)NULL,0);
}
char append_buf[256];
char *get_append(void)
{
FILE *fp;
int len;
if((fp = fopen("/proc/cmdline", "r")) == NULL){
printf("/proc/cmdline file open error !!\n");
exit(1);
}
fgets(append_buf, 256, fp);
len = strlen(append_buf);
append_buf[len-1] = 0;
fclose(fp);
return append_buf;
}
int is_crashkernel_mem_reserved(void)
{
return 0; /* kdump is not supported on this platform (yet) */
}
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