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#include <common.h>
#include <command.h>
#include <fs.h>
#include <of.h>
#include <fcntl.h>
#include <errno.h>
#include <malloc.h>
#include <sizes.h>
#include <asm/byteorder.h>
#include <asm/armlinux.h>
#include <asm/system.h>
#include <asm-generic/memory_layout.h>
#include <memory.h>
struct zimage_header {
u32 unused[9];
u32 magic;
u32 start;
u32 end;
};
#define ZIMAGE_MAGIC 0x016F2818
static int do_bootz(int argc, char *argv[])
{
int fd, ret, swap = 0;
struct zimage_header __header, *header;
void *zimage;
void *oftree = NULL;
u32 end;
int usemap = 0;
struct memory_bank *bank = list_first_entry(&memory_banks, struct memory_bank, list);
struct resource *res = NULL;
if (argc != 2)
return COMMAND_ERROR_USAGE;
fd = open(argv[1], O_RDONLY);
if (fd < 0) {
perror("open");
return 1;
}
/*
* We can save the memcpy of the zImage if it already is in
* the first 128MB of SDRAM.
*/
zimage = memmap(fd, PROT_READ);
if (zimage && (unsigned long)zimage >= bank->start &&
(unsigned long)zimage < bank->start + SZ_128M) {
usemap = 1;
header = zimage;
}
if (!usemap) {
header = &__header;
ret = read(fd, header, sizeof(*header));
if (ret < sizeof(*header)) {
printf("could not read %s\n", argv[1]);
goto err_out;
}
}
switch (header->magic) {
#ifdef CONFIG_BOOT_ENDIANNESS_SWITCH
case swab32(ZIMAGE_MAGIC):
swap = 1;
/* fall through */
#endif
case ZIMAGE_MAGIC:
break;
default:
printf("invalid magic 0x%08x\n", header->magic);
goto err_out;
}
end = header->end;
if (swap)
end = swab32(end);
if (!usemap) {
if (bank->size <= SZ_128M) {
zimage = xmalloc(end);
} else {
zimage = (void *)bank->start + SZ_8M;
res = request_sdram_region("zimage",
bank->start + SZ_8M, end);
if (!res) {
printf("can't request region for kernel\n");
goto err_out1;
}
}
memcpy(zimage, header, sizeof(*header));
ret = read(fd, zimage + sizeof(*header), end - sizeof(*header));
if (ret < end - sizeof(*header)) {
printf("could not read %s\n", argv[1]);
goto err_out2;
}
}
if (swap) {
void *ptr;
for (ptr = zimage; ptr < zimage + end; ptr += 4)
*(u32 *)ptr = swab32(*(u32 *)ptr);
}
printf("loaded zImage from %s with size %d\n", argv[1], end);
#ifdef CONFIG_OFTREE
oftree = of_get_fixed_tree(NULL);
#endif
start_linux(zimage, swap, 0, 0, oftree);
return 0;
err_out2:
if (res)
release_sdram_region(res);
err_out1:
free(zimage);
err_out:
close(fd);
return 1;
}
BAREBOX_CMD_START(bootz)
.cmd = do_bootz,
BAREBOX_CMD_DESC("boot Linux zImage")
BAREBOX_CMD_OPTS("FILE")
BAREBOX_CMD_GROUP(CMD_GRP_BOOT)
BAREBOX_CMD_END
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