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/*
* kexec/arch/s390/kexec-s390.c
*
* (C) Copyright IBM Corp. 2005
*
* Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
*
*/
#define _GNU_SOURCE
#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-s390.h"
#include <arch/options.h>
#define MAX_MEMORY_RANGES 64
static struct memory_range memory_range[MAX_MEMORY_RANGES];
/*
* get_memory_ranges:
* Return a list of memory ranges by parsing the file returned by
* proc_iomem()
*
* INPUT:
* - Pointer to an array of memory_range structures.
* - Pointer to an integer with holds the number of memory ranges.
*
* RETURN:
* - 0 on normal execution.
* - (-1) if something went wrong.
*/
int get_memory_ranges(struct memory_range **range, int *ranges, unsigned long flags)
{
char sys_ram[] = "System RAM\n";
char *iomem = proc_iomem(flags & KEXEC_ON_CRASH);
FILE *fp;
char line[80];
int current_range = 0;
fp = fopen(iomem,"r");
if(fp == 0) {
fprintf(stderr,"Unable to open %s: %s\n",iomem,strerror(errno));
return -1;
}
/* Setup the compare string properly. */
while(fgets(line,sizeof(line),fp) != 0) {
unsigned long long start, end;
int cons;
char *str;
if (current_range == MAX_MEMORY_RANGES)
break;
sscanf(line,"%Lx-%Lx : %n", &start, &end, &cons);
str = line+cons;
if(memcmp(str,sys_ram,strlen(sys_ram)) == 0) {
memory_range[current_range].start = start;
memory_range[current_range].end = end;
memory_range[current_range].type = RANGE_RAM;
current_range++;
}
else {
continue;
}
}
fclose(fp);
*range = memory_range;
*ranges = current_range;
return 0;
}
/* Supported file types and callbacks */
struct file_type file_type[] = {
{ "image", image_s390_probe, image_s390_load, image_s390_usage},
};
int file_types = sizeof(file_type) / sizeof(file_type[0]);
void arch_usage(void)
{
}
int arch_process_options(int argc, char **argv)
{
return 0;
}
int arch_compat_trampoline(struct kexec_info *info)
{
info->kexec_flags |= KEXEC_ARCH_S390;
return 0;
}
void arch_update_purgatory(struct kexec_info *info)
{
}
int is_crashkernel_mem_reserved(void)
{
return 0; /* kdump is not supported on this platform (yet) */
}
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