]>
git.ipfire.org Git - people/ms/u-boot.git/blob - lib_mips/bootm.c
b336a364986461e94aab8cea80d660cb54ad31d7
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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
28 #include <asm/byteorder.h>
29 #include <asm/addrspace.h>
31 DECLARE_GLOBAL_DATA_PTR
;
33 #define LINUX_MAX_ENVS 256
34 #define LINUX_MAX_ARGS 256
36 static int linux_argc
;
37 static char ** linux_argv
;
39 static char ** linux_env
;
40 static char * linux_env_p
;
41 static int linux_env_idx
;
43 static void linux_params_init (ulong start
, char * commandline
);
44 static void linux_env_set (char * env_name
, char * env_val
);
46 extern int do_reset (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]);
48 void do_bootm_linux (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[],
49 bootm_headers_t
*images
)
51 ulong initrd_start
, initrd_end
;
53 void (*theKernel
) (int, char **, char **, int *);
54 char *commandline
= getenv ("bootargs");
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
);
66 puts ("Could not find kernel entry point!\n");
67 do_reset (cmdtp
, flag
, argc
, argv
);
69 theKernel
= (void (*)(int, char **, char **, int *))ep
;
71 boot_get_ramdisk (cmdtp
, flag
, argc
, argv
, images
,
72 IH_ARCH_MIPS
, &initrd_start
, &initrd_end
);
74 show_boot_progress (15);
77 printf ("## Transferring control to Linux (at address %08lx) ...\n",
81 linux_params_init (UNCACHED_SDRAM (gd
->bd
->bi_boot_params
), commandline
);
83 #ifdef CONFIG_MEMSIZE_IN_BYTES
84 sprintf (env_buf
, "%lu", gd
->ram_size
);
86 printf ("## Giving linux memsize in bytes, %lu\n", gd
->ram_size
);
89 sprintf (env_buf
, "%lu", gd
->ram_size
>> 20);
91 printf ("## Giving linux memsize in MB, %lu\n", gd
->ram_size
>> 20);
93 #endif /* CONFIG_MEMSIZE_IN_BYTES */
95 linux_env_set ("memsize", env_buf
);
97 sprintf (env_buf
, "0x%08X", (uint
) UNCACHED_SDRAM (initrd_start
));
98 linux_env_set ("initrd_start", env_buf
);
100 sprintf (env_buf
, "0x%X", (uint
) (initrd_end
- initrd_start
));
101 linux_env_set ("initrd_size", env_buf
);
103 sprintf (env_buf
, "0x%08X", (uint
) (gd
->bd
->bi_flashstart
));
104 linux_env_set ("flash_start", env_buf
);
106 sprintf (env_buf
, "0x%X", (uint
) (gd
->bd
->bi_flashsize
));
107 linux_env_set ("flash_size", env_buf
);
109 if (!images
->autostart
)
112 /* we assume that the kernel is in place */
113 printf ("\nStarting kernel ...\n\n");
115 theKernel (linux_argc
, linux_argv
, linux_env
, 0);
118 static void linux_params_init (ulong start
, char *line
)
120 char *next
, *quote
, *argp
;
123 linux_argv
= (char **) start
;
125 argp
= (char *) (linux_argv
+ LINUX_MAX_ARGS
);
129 while (line
&& *line
&& linux_argc
< LINUX_MAX_ARGS
) {
130 quote
= strchr (line
, '"');
131 next
= strchr (line
, ' ');
133 while (next
!= NULL
&& quote
!= NULL
&& quote
< next
) {
134 /* we found a left quote before the next blank
135 * now we have to find the matching right quote
137 next
= strchr (quote
+ 1, '"');
139 quote
= strchr (next
+ 1, '"');
140 next
= strchr (next
+ 1, ' ');
145 next
= line
+ strlen (line
);
148 linux_argv
[linux_argc
] = argp
;
149 memcpy (argp
, line
, next
- line
);
150 argp
[next
- line
] = 0;
152 argp
+= next
- line
+ 1;
161 linux_env
= (char **) (((ulong
) argp
+ 15) & ~15);
163 linux_env_p
= (char *) (linux_env
+ LINUX_MAX_ENVS
);
167 static void linux_env_set (char *env_name
, char *env_val
)
169 if (linux_env_idx
< LINUX_MAX_ENVS
- 1) {
170 linux_env
[linux_env_idx
] = linux_env_p
;
172 strcpy (linux_env_p
, env_name
);
173 linux_env_p
+= strlen (env_name
);
175 strcpy (linux_env_p
, "=");
178 strcpy (linux_env_p
, env_val
);
179 linux_env_p
+= strlen (env_val
);
182 linux_env
[++linux_env_idx
] = 0;