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0b135cfc NI |
1 | /* |
2 | * (C) Copyright 2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <command.h> | |
26 | #include <asm/byteorder.h> | |
27 | ||
0b135cfc | 28 | /* The SH kernel reads arguments from the empty zero page at location |
61fb15c5 | 29 | * 0 at the start of SDRAM. The following are copied from |
0b135cfc NI |
30 | * arch/sh/kernel/setup.c and may require tweaking if the kernel sources |
31 | * change. | |
32 | */ | |
438a4c11 | 33 | #define PARAM ((unsigned char *)CFG_SDRAM_BASE + 0x1000) |
0b135cfc NI |
34 | |
35 | #define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000)) | |
36 | #define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004)) | |
37 | #define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008)) | |
38 | #define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c)) | |
39 | #define INITRD_START (*(unsigned long *) (PARAM+0x010)) | |
40 | #define INITRD_SIZE (*(unsigned long *) (PARAM+0x014)) | |
41 | /* ... */ | |
42 | #define COMMAND_LINE ((char *) (PARAM+0x100)) | |
43 | ||
438a4c11 | 44 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
0b135cfc | 45 | |
d5934ad7 MB |
46 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
47 | ||
0b135cfc NI |
48 | #ifdef CFG_DEBUG |
49 | static void hexdump (unsigned char *buf, int len) | |
50 | { | |
51 | int i; | |
52 | ||
53 | for (i = 0; i < len; i++) { | |
54 | if ((i % 16) == 0) | |
55 | printf ("%s%08x: ", i ? "\n" : "", (unsigned int) &buf[i]); | |
56 | printf ("%02x ", buf[i]); | |
57 | } | |
58 | printf ("\n"); | |
59 | } | |
60 | #endif | |
61 | ||
62 | void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], | |
438a4c11 | 63 | bootm_headers_t *images) |
0b135cfc | 64 | { |
d5934ad7 MB |
65 | ulong ep = 0; |
66 | char *bootargs = getenv("bootargs"); | |
67 | ||
68 | /* find kernel entry point */ | |
69 | if (images->legacy_hdr_valid) { | |
70 | ep = image_get_ep (images->legacy_hdr_os); | |
71 | #if defined(CONFIG_FIT) | |
72 | } else if (images->fit_uname_os) { | |
cd7c596e MB |
73 | int ret = fit_image_get_entry (images->fit_hdr_os, |
74 | images->fit_noffset_os, &ep); | |
75 | if (ret) { | |
76 | puts ("Can't get entry point property!\n"); | |
77 | goto error; | |
78 | } | |
d5934ad7 MB |
79 | #endif |
80 | } else { | |
81 | puts ("Could not find kernel entry point!\n"); | |
cd7c596e | 82 | goto error; |
d5934ad7 MB |
83 | } |
84 | void (*kernel) (void) = (void (*)(void))ep; | |
0b135cfc | 85 | |
75fa002c KG |
86 | if (!images->autostart) |
87 | return ; | |
88 | ||
0b135cfc NI |
89 | /* Setup parameters */ |
90 | memset(PARAM, 0, 0x1000); /* Clear zero page */ | |
91 | strcpy(COMMAND_LINE, bootargs); | |
b02bad12 | 92 | |
0b135cfc | 93 | kernel(); |
cd7c596e MB |
94 | /* does not return */ |
95 | return; | |
96 | ||
97 | error: | |
98 | if (images->autostart) | |
99 | do_reset (cmdtp, flag, argc, argv); | |
100 | return; | |
0b135cfc | 101 | } |