1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * Copyright (c) 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk>
5 */
6
7 #include <common.h>
8 #include <asm/io.h>
9
10 #define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
11
12 struct arm_z_header {
13 uint32_t code[9];
14 uint32_t zi_magic;
15 uint32_t zi_start;
16 uint32_t zi_end;
17 } __attribute__ ((__packed__));
18
bootz_setup(ulong image,ulong * start,ulong * end)19 int bootz_setup(ulong image, ulong *start, ulong *end)
20 {
21 uint8_t *zimage = map_sysmem(image, 0);
22 struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage;
23 int ret = 0;
24
25 if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
26 uint8_t setup_sects = *(zimage + 0x1f1);
27 uint32_t syssize =
28 le32_to_cpu(*(uint32_t *)(zimage + 0x1f4));
29
30 *start = 0;
31 *end = (setup_sects + 1) * 512 + syssize * 16;
32
33 printf("setting up X86 zImage [ %ld - %ld ]\n",
34 *start, *end);
35 } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) {
36 *start = le32_to_cpu(arm_hdr->zi_start);
37 *end = le32_to_cpu(arm_hdr->zi_end);
38
39 printf("setting up ARM zImage [ %ld - %ld ]\n",
40 *start, *end);
41 } else {
42 printf("Unrecognized zImage\n");
43 ret = 1;
44 }
45
46 unmap_sysmem((void *)image);
47
48 return ret;
49 }
50
do_bootm_linux(int flag,int argc,char * argv[],bootm_headers_t * images)51 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
52 {
53 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
54 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
55 printf("## Transferring control to Linux (at address %08lx)...\n",
56 images->ep);
57 printf("sandbox: continuing, as we cannot run Linux\n");
58 }
59
60 return 0;
61 }
62