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);
47 void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
48 image_header_t *hdr, int verify)
50 ulong initrd_start, initrd_end;
52 void (*theKernel) (int, char **, char **, int *);
53 char *commandline = getenv ("bootargs");
57 (void (*)(int, char **, char **, int *))image_get_ep (hdr);
59 get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
60 IH_ARCH_MIPS, &initrd_start, &initrd_end);
62 show_boot_progress (15);
65 printf ("## Transferring control to Linux (at address %08lx) ...\n",
69 linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
71 #ifdef CONFIG_MEMSIZE_IN_BYTES
72 sprintf (env_buf, "%lu", gd->ram_size);
74 printf ("## Giving linux memsize in bytes, %lu\n", gd->ram_size);
77 sprintf (env_buf, "%lu", gd->ram_size >> 20);
79 printf ("## Giving linux memsize in MB, %lu\n", gd->ram_size >> 20);
81 #endif /* CONFIG_MEMSIZE_IN_BYTES */
83 linux_env_set ("memsize", env_buf);
85 sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (initrd_start));
86 linux_env_set ("initrd_start", env_buf);
88 sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start));
89 linux_env_set ("initrd_size", env_buf);
91 sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
92 linux_env_set ("flash_start", env_buf);
94 sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
95 linux_env_set ("flash_size", env_buf);
97 /* we assume that the kernel is in place */
98 printf ("\nStarting kernel ...\n\n");
100 theKernel (linux_argc, linux_argv, linux_env, 0);
103 static void linux_params_init (ulong start, char *line)
105 char *next, *quote, *argp;
108 linux_argv = (char **) start;
110 argp = (char *) (linux_argv + LINUX_MAX_ARGS);
114 while (line && *line && linux_argc < LINUX_MAX_ARGS) {
115 quote = strchr (line, '"');
116 next = strchr (line, ' ');
118 while (next != NULL && quote != NULL && quote < next) {
119 /* we found a left quote before the next blank
120 * now we have to find the matching right quote
122 next = strchr (quote + 1, '"');
124 quote = strchr (next + 1, '"');
125 next = strchr (next + 1, ' ');
130 next = line + strlen (line);
133 linux_argv[linux_argc] = argp;
134 memcpy (argp, line, next - line);
135 argp[next - line] = 0;
137 argp += next - line + 1;
146 linux_env = (char **) (((ulong) argp + 15) & ~15);
148 linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
152 static void linux_env_set (char *env_name, char *env_val)
154 if (linux_env_idx < LINUX_MAX_ENVS - 1) {
155 linux_env[linux_env_idx] = linux_env_p;
157 strcpy (linux_env_p, env_name);
158 linux_env_p += strlen (env_name);
160 strcpy (linux_env_p, "=");
163 strcpy (linux_env_p, env_val);
164 linux_env_p += strlen (env_val);
167 linux_env[++linux_env_idx] = 0;