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/*
* kexec-hppa.c - kexec for hppa
*
* Copyright (C) 2019 Sven Schnelle <svens@stackframe.org>
*
* 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 "../../kexec.h"
#include "../../kexec-syscall.h"
#include "kexec-hppa.h"
#include <arch/options.h>
#define SYSTEM_RAM "System RAM\n"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
static struct memory_range memory_range[MAX_MEMORY_RANGES];
unsigned long phys_offset;
/* Return a sorted list of available memory ranges. */
int get_memory_ranges(struct memory_range **range, int *ranges,
unsigned long UNUSED(kexec_flags))
{
const char *iomem = proc_iomem();
int memory_ranges = 0;
char line[512];
FILE *fp;
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) {
unsigned long long start, end;
char *str;
int type;
int consumed;
int count;
count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
if (count != 2)
continue;
str = line + consumed;
if (memcmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0) {
type = RANGE_RAM;
} else if (memcmp(str, "reserved\n", 9) == 0) {
type = RANGE_RESERVED;
} else {
continue;
}
memory_range[memory_ranges].start = start;
memory_range[memory_ranges].end = end;
memory_range[memory_ranges].type = type;
if (++memory_ranges >= MAX_MEMORY_RANGES)
break;
}
fclose(fp);
*range = memory_range;
*ranges = memory_ranges;
dbgprint_mem_range("MEMORY RANGES", *range, *ranges);
return 0;
}
struct file_type file_type[] = {
{"elf-hppa", elf_hppa_probe, elf_hppa_load, elf_hppa_usage},
};
int file_types = ARRAY_SIZE(file_type);
void arch_usage(void)
{
}
int arch_process_options(int argc, char **argv)
{
static const struct option options[] = {
KEXEC_ALL_OPTIONS
{ 0, 0, NULL, 0 },
};
static const char short_options[] = KEXEC_ALL_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;
}
const struct arch_map_entry arches[] = {
{ "parisc64", KEXEC_ARCH_HPPA },
{ "parisc", KEXEC_ARCH_HPPA },
{ NULL, 0 },
};
int arch_compat_trampoline(struct kexec_info *UNUSED(info))
{
return 0;
}
void arch_update_purgatory(struct kexec_info *UNUSED(info))
{
}
int is_crashkernel_mem_reserved(void)
{
return 0;
}
int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
{
/* Crash kernel region size is not exposed by the system */
return -1;
}
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);
}
unsigned long virt_to_phys(unsigned long addr)
{
return addr - phys_offset;
}
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