bootm.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2011 The Chromium OS Authors.
* Copyright (c) 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk>
*/
#include <common.h>
#include <asm/io.h>
#define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
struct arm_z_header {
uint32_t code[9];
uint32_t zi_magic;
uint32_t zi_start;
uint32_t zi_end;
} __attribute__ ((__packed__));
int bootz_setup(ulong image, ulong *start, ulong *end)
{
uint8_t *zimage = map_sysmem(image, 0);
struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage;
int ret = 0;
if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
uint8_t setup_sects = *(zimage + 0x1f1);
uint32_t syssize =
le32_to_cpu(*(uint32_t *)(zimage + 0x1f4));
*start = 0;
*end = (setup_sects + 1) * 512 + syssize * 16;
printf("setting up X86 zImage [ %ld - %ld ]\n",
*start, *end);
} else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) {
*start = le32_to_cpu(arm_hdr->zi_start);
*end = le32_to_cpu(arm_hdr->zi_end);
printf("setting up ARM zImage [ %ld - %ld ]\n",
*start, *end);
} else {
printf("Unrecognized zImage\n");
ret = 1;
}
unmap_sysmem((void *)image);
return ret;
}
int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
{
if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
printf("## Transferring control to Linux (at address %08lx)...\n",
images->ep);
printf("sandbox: continuing, as we cannot run Linux\n");
}
return 0;
}