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/*
* kexec-mips.c - kexec for mips
* Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
* Copyright (C) 2007 Tvblob s.r.l.
*
* derived from ../ppc/kexec-mips.c
* Copyright (C) 2004, 2005 Albert Herranz
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#include <stddef.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <getopt.h>
#include <sys/utsname.h>
#include "../../kexec.h"
#include "../../kexec-syscall.h"
#include "kexec-mips.h"
#include <arch/options.h>
#define MAX_MEMORY_RANGES 64
#define MAX_LINE 160
static struct memory_range memory_range[MAX_MEMORY_RANGES];
/* Return a sorted list of memory ranges. */
int get_memory_ranges(struct memory_range **range, int *ranges, unsigned long kexec_flags)
{
int memory_ranges = 0;
#if 1
/* this is valid for gemini2 platform based on tx4938
* in our case, /proc/iomem doesn't report ram space
*/
memory_range[memory_ranges].start = 0x00000000;
memory_range[memory_ranges].end = 0x04000000;
memory_range[memory_ranges].type = RANGE_RAM;
memory_ranges++;
#else
#error Please, fix this for your platform
const char iomem[] = "/proc/iomem";
char line[MAX_LINE];
FILE *fp;
unsigned long long start, end;
char *str;
int type, consumed, count;
fp = fopen(iomem, "r");
if (!fp) {
fprintf(stderr, "Cannot open %s: %s\n", iomem, strerror(errno));
return -1;
}
while (fgets(line, sizeof(line), fp) != 0) {
if (memory_ranges >= MAX_MEMORY_RANGES)
break;
count = sscanf(line, "%Lx-%Lx : %n", &start, &end, &consumed);
if (count != 2)
continue;
str = line + consumed;
end = end + 1;
#if 0
printf("%016Lx-%016Lx : %s\n", start, end, str);
#endif
if (memcmp(str, "System RAM\n", 11) == 0) {
type = RANGE_RAM;
} else if (memcmp(str, "reserved\n", 9) == 0) {
type = RANGE_RESERVED;
} else if (memcmp(str, "ACPI Tables\n", 12) == 0) {
type = RANGE_ACPI;
} else if (memcmp(str, "ACPI Non-volatile Storage\n", 26) == 0) {
type = RANGE_ACPI_NVS;
} else {
continue;
}
memory_range[memory_ranges].start = start;
memory_range[memory_ranges].end = end;
memory_range[memory_ranges].type = type;
#if 0
printf("%016Lx-%016Lx : %x\n", start, end, type);
#endif
memory_ranges++;
}
fclose(fp);
#endif
*range = memory_range;
*ranges = memory_ranges;
return 0;
}
struct file_type file_type[] = {
{"elf-mips", elf_mips_probe, elf_mips_load, elf_mips_usage},
};
int file_types = sizeof(file_type) / sizeof(file_type[0]);
void arch_usage(void)
{
}
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:
break;
}
}
/* Reset getopt for the next pass; called in other source modules */
opterr = 1;
optind = 1;
return 0;
}
int arch_compat_trampoline(struct kexec_info *info)
{
int result;
struct utsname utsname;
result = uname(&utsname);
if (result < 0) {
fprintf(stderr, "uname failed: %s\n",
strerror(errno));
return -1;
}
if (strcmp(utsname.machine, "mips") == 0)
{
/* For compatibility with older patches
* use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_MIPS here.
*/
info->kexec_flags |= KEXEC_ARCH_DEFAULT;
}
else {
fprintf(stderr, "Unsupported machine type: %s\n",
utsname.machine);
return -1;
}
return 0;
}
void arch_update_purgatory(struct kexec_info *info)
{
}
/*
* Adding a dummy function, so that build on mips will not break.
* Need to implement the actual checking code
*/
int is_crashkernel_mem_reserved(void)
{
return 1;
}
unsigned long virt_to_phys(unsigned long addr)
{
return addr - 0x80000000;
}
/*
* add_segment() should convert base to a physical address on mips,
* while the default is just to work with base as is */
void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
unsigned long base, size_t memsz)
{
add_segment_phys_virt(info, buf, bufsz, base, memsz, 1);
}
/*
* add_buffer() should convert base to a physical address on mips,
* while the default is just to work with base as is */
unsigned long add_buffer(struct kexec_info *info, const void *buf,
unsigned long bufsz, unsigned long memsz,
unsigned long buf_align, unsigned long buf_min,
unsigned long buf_max, int buf_end)
{
return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
buf_min, buf_max, buf_end, 1);
}
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