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c021880a WD |
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> | |
c021880a WD |
26 | #include <image.h> |
27 | #include <zlib.h> | |
28 | #include <asm/byteorder.h> | |
29 | #include <asm/addrspace.h> | |
30 | ||
d87080b7 WD |
31 | DECLARE_GLOBAL_DATA_PTR; |
32 | ||
c021880a WD |
33 | #define LINUX_MAX_ENVS 256 |
34 | #define LINUX_MAX_ARGS 256 | |
35 | ||
c021880a WD |
36 | static int linux_argc; |
37 | static char ** linux_argv; | |
38 | ||
39 | static char ** linux_env; | |
40 | static char * linux_env_p; | |
41 | static int linux_env_idx; | |
42 | ||
43 | static void linux_params_init (ulong start, char * commandline); | |
44 | static void linux_env_set (char * env_name, char * env_val); | |
45 | ||
d5934ad7 | 46 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
c021880a | 47 | |
5da627a4 | 48 | void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[], |
d5934ad7 | 49 | bootm_headers_t *images, int verify) |
c021880a | 50 | { |
d5934ad7 MB |
51 | ulong initrd_start, initrd_end; |
52 | ulong ep = 0; | |
53 | void (*theKernel) (int, char **, char **, int *); | |
54 | char *commandline = getenv ("bootargs"); | |
55 | char env_buf[12]; | |
f13e7b2e | 56 | |
d5934ad7 MB |
57 | /* find kernel entry point */ |
58 | if (images->legacy_hdr_valid) { | |
59 | ep = image_get_ep (images->legacy_hdr_os); | |
60 | #if defined(CONFIG_FIT) | |
61 | } else if (images->fit_uname_os) { | |
62 | fit_unsupported_reset ("MIPS linux bootm"); | |
63 | do_reset (cmdtp, flag, argc, argv); | |
64 | #endif | |
65 | } else { | |
66 | puts ("Could not find kernel entry point!\n"); | |
67 | do_reset (cmdtp, flag, argc, argv); | |
68 | } | |
69 | theKernel = (void (*)(int, char **, char **, int *))ep; | |
c021880a | 70 | |
d5934ad7 | 71 | get_ramdisk (cmdtp, flag, argc, argv, images, verify, |
5ad03eb3 | 72 | IH_ARCH_MIPS, &initrd_start, &initrd_end); |
c021880a | 73 | |
fad63407 | 74 | show_boot_progress (15); |
c021880a WD |
75 | |
76 | #ifdef DEBUG | |
5da627a4 WD |
77 | printf ("## Transferring control to Linux (at address %08lx) ...\n", |
78 | (ulong) theKernel); | |
c021880a WD |
79 | #endif |
80 | ||
a2663ea4 | 81 | linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline); |
5da627a4 WD |
82 | |
83 | #ifdef CONFIG_MEMSIZE_IN_BYTES | |
84 | sprintf (env_buf, "%lu", gd->ram_size); | |
85 | #ifdef DEBUG | |
86 | printf ("## Giving linux memsize in bytes, %lu\n", gd->ram_size); | |
87 | #endif | |
88 | #else | |
89 | sprintf (env_buf, "%lu", gd->ram_size >> 20); | |
90 | #ifdef DEBUG | |
91 | printf ("## Giving linux memsize in MB, %lu\n", gd->ram_size >> 20); | |
92 | #endif | |
93 | #endif /* CONFIG_MEMSIZE_IN_BYTES */ | |
c021880a | 94 | |
5da627a4 | 95 | linux_env_set ("memsize", env_buf); |
c021880a | 96 | |
a2663ea4 | 97 | sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (initrd_start)); |
5da627a4 | 98 | linux_env_set ("initrd_start", env_buf); |
c021880a | 99 | |
5da627a4 WD |
100 | sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start)); |
101 | linux_env_set ("initrd_size", env_buf); | |
c021880a | 102 | |
5da627a4 WD |
103 | sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart)); |
104 | linux_env_set ("flash_start", env_buf); | |
c021880a | 105 | |
5da627a4 WD |
106 | sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize)); |
107 | linux_env_set ("flash_size", env_buf); | |
c021880a | 108 | |
5da627a4 WD |
109 | /* we assume that the kernel is in place */ |
110 | printf ("\nStarting kernel ...\n\n"); | |
c021880a | 111 | |
5da627a4 | 112 | theKernel (linux_argc, linux_argv, linux_env, 0); |
c021880a WD |
113 | } |
114 | ||
5da627a4 | 115 | static void linux_params_init (ulong start, char *line) |
c021880a | 116 | { |
5da627a4 | 117 | char *next, *quote, *argp; |
8bde7f77 | 118 | |
5da627a4 WD |
119 | linux_argc = 1; |
120 | linux_argv = (char **) start; | |
121 | linux_argv[0] = 0; | |
122 | argp = (char *) (linux_argv + LINUX_MAX_ARGS); | |
123 | ||
124 | next = line; | |
c021880a | 125 | |
5da627a4 WD |
126 | while (line && *line && linux_argc < LINUX_MAX_ARGS) { |
127 | quote = strchr (line, '"'); | |
128 | next = strchr (line, ' '); | |
c021880a | 129 | |
5da627a4 WD |
130 | while (next != NULL && quote != NULL && quote < next) { |
131 | /* we found a left quote before the next blank | |
132 | * now we have to find the matching right quote | |
133 | */ | |
134 | next = strchr (quote + 1, '"'); | |
135 | if (next != NULL) { | |
136 | quote = strchr (next + 1, '"'); | |
137 | next = strchr (next + 1, ' '); | |
138 | } | |
139 | } | |
8bde7f77 | 140 | |
5da627a4 WD |
141 | if (next == NULL) { |
142 | next = line + strlen (line); | |
143 | } | |
8bde7f77 | 144 | |
5da627a4 WD |
145 | linux_argv[linux_argc] = argp; |
146 | memcpy (argp, line, next - line); | |
147 | argp[next - line] = 0; | |
c021880a | 148 | |
5da627a4 WD |
149 | argp += next - line + 1; |
150 | linux_argc++; | |
151 | ||
152 | if (*next) | |
153 | next++; | |
154 | ||
155 | line = next; | |
156 | } | |
157 | ||
158 | linux_env = (char **) (((ulong) argp + 15) & ~15); | |
159 | linux_env[0] = 0; | |
160 | linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS); | |
161 | linux_env_idx = 0; | |
c021880a WD |
162 | } |
163 | ||
5da627a4 | 164 | static void linux_env_set (char *env_name, char *env_val) |
c021880a | 165 | { |
5da627a4 WD |
166 | if (linux_env_idx < LINUX_MAX_ENVS - 1) { |
167 | linux_env[linux_env_idx] = linux_env_p; | |
c021880a | 168 | |
5da627a4 WD |
169 | strcpy (linux_env_p, env_name); |
170 | linux_env_p += strlen (env_name); | |
c021880a | 171 | |
5da627a4 WD |
172 | strcpy (linux_env_p, "="); |
173 | linux_env_p += 1; | |
c021880a | 174 | |
5da627a4 WD |
175 | strcpy (linux_env_p, env_val); |
176 | linux_env_p += strlen (env_val); | |
8bde7f77 | 177 | |
5da627a4 WD |
178 | linux_env_p++; |
179 | linux_env[++linux_env_idx] = 0; | |
180 | } | |
c021880a | 181 | } |