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");
59 /* find kernel entry point */
60 if (images->legacy_hdr_valid) {
61 ep = image_get_ep (&images->legacy_hdr_os_copy);
62 #if defined(CONFIG_FIT)
63 } else if (images->fit_uname_os) {
64 ret = fit_image_get_entry (images->fit_hdr_os,
65 images->fit_noffset_os, &ep);
67 puts ("Can't get entry point property!\n");
72 puts ("Could not find kernel entry point!\n");
75 theKernel = (void (*)(int, char **, char **, int *))ep;
77 ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_MIPS,
78 &initrd_start, &initrd_end);
82 show_boot_progress (15);
85 printf ("## Transferring control to Linux (at address %08lx) ...\n",
89 linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
91 #ifdef CONFIG_MEMSIZE_IN_BYTES
92 sprintf (env_buf, "%lu", (ulong)gd->ram_size);
93 debug ("## Giving linux memsize in bytes, %lu\n", (ulong)gd->ram_size);
95 sprintf (env_buf, "%lu", (ulong)(gd->ram_size >> 20));
96 debug ("## Giving linux memsize in MB, %lu\n", (ulong)(gd->ram_size >> 20));
97 #endif /* CONFIG_MEMSIZE_IN_BYTES */
99 linux_env_set ("memsize", env_buf);
101 sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (initrd_start));
102 linux_env_set ("initrd_start", env_buf);
104 sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start));
105 linux_env_set ("initrd_size", env_buf);
107 sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
108 linux_env_set ("flash_start", env_buf);
110 sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
111 linux_env_set ("flash_size", env_buf);
113 cp = getenv("ethaddr");
115 linux_env_set("ethaddr", cp);
118 cp = getenv("eth1addr");
120 linux_env_set("eth1addr", cp);
123 if (!images->autostart)
126 /* we assume that the kernel is in place */
127 printf ("\nStarting kernel ...\n\n");
129 theKernel (linux_argc, linux_argv, linux_env, 0);
130 /* does not return */
134 if (images->autostart)
135 do_reset (cmdtp, flag, argc, argv);
139 static void linux_params_init (ulong start, char *line)
141 char *next, *quote, *argp;
144 linux_argv = (char **) start;
146 argp = (char *) (linux_argv + LINUX_MAX_ARGS);
150 while (line && *line && linux_argc < LINUX_MAX_ARGS) {
151 quote = strchr (line, '"');
152 next = strchr (line, ' ');
154 while (next != NULL && quote != NULL && quote < next) {
155 /* we found a left quote before the next blank
156 * now we have to find the matching right quote
158 next = strchr (quote + 1, '"');
160 quote = strchr (next + 1, '"');
161 next = strchr (next + 1, ' ');
166 next = line + strlen (line);
169 linux_argv[linux_argc] = argp;
170 memcpy (argp, line, next - line);
171 argp[next - line] = 0;
173 argp += next - line + 1;
182 linux_env = (char **) (((ulong) argp + 15) & ~15);
184 linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
188 static void linux_env_set (char *env_name, char *env_val)
190 if (linux_env_idx < LINUX_MAX_ENVS - 1) {
191 linux_env[linux_env_idx] = linux_env_p;
193 strcpy (linux_env_p, env_name);
194 linux_env_p += strlen (env_name);
196 strcpy (linux_env_p, "=");
199 strcpy (linux_env_p, env_val);
200 linux_env_p += strlen (env_val);
203 linux_env[++linux_env_idx] = 0;