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 <bootstage.h>
9 #include <image.h>
10 #include <asm/io.h>
11
12 #define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
13
14 struct arm_z_header {
15 uint32_t code[9];
16 uint32_t zi_magic;
17 uint32_t zi_start;
18 uint32_t zi_end;
19 } __attribute__ ((__packed__));
20
bootz_setup(ulong image,ulong * start,ulong * end)21 int bootz_setup(ulong image, ulong *start, ulong *end)
22 {
23 uint8_t *zimage = map_sysmem(image, 0);
24 struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage;
25 int ret = 0;
26
27 if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
28 uint8_t setup_sects = *(zimage + 0x1f1);
29 uint32_t syssize =
30 le32_to_cpu(*(uint32_t *)(zimage + 0x1f4));
31
32 *start = 0;
33 *end = (setup_sects + 1) * 512 + syssize * 16;
34
35 printf("setting up X86 zImage [ %ld - %ld ]\n",
36 *start, *end);
37 } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) {
38 *start = le32_to_cpu(arm_hdr->zi_start);
39 *end = le32_to_cpu(arm_hdr->zi_end);
40
41 printf("setting up ARM zImage [ %ld - %ld ]\n",
42 *start, *end);
43 } else {
44 printf("Unrecognized zImage\n");
45 ret = 1;
46 }
47
48 unmap_sysmem((void *)image);
49
50 return ret;
51 }
52
do_bootm_linux(int flag,int argc,char * argv[],bootm_headers_t * images)53 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
54 {
55 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
56 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
57 printf("## Transferring control to Linux (at address %08lx)...\n",
58 images->ep);
59 printf("sandbox: continuing, as we cannot run Linux\n");
60 }
61
62 return 0;
63 }
64