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 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
48 void (*theKernel) (int, char **, char **, int *);
49 char *commandline = getenv ("bootargs");
53 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
56 /* find kernel entry point */
57 theKernel = (void (*)(int, char **, char **, int *))images->ep;
59 show_boot_progress (15);
62 printf ("## Transferring control to Linux (at address %08lx) ...\n",
66 linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
68 #ifdef CONFIG_MEMSIZE_IN_BYTES
69 sprintf (env_buf, "%lu", (ulong)gd->ram_size);
70 debug ("## Giving linux memsize in bytes, %lu\n", (ulong)gd->ram_size);
72 sprintf (env_buf, "%lu", (ulong)(gd->ram_size >> 20));
73 debug ("## Giving linux memsize in MB, %lu\n", (ulong)(gd->ram_size >> 20));
74 #endif /* CONFIG_MEMSIZE_IN_BYTES */
76 linux_env_set ("memsize", env_buf);
78 sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (images->rd_start));
79 linux_env_set ("initrd_start", env_buf);
81 sprintf (env_buf, "0x%X", (uint) (images->rd_end - images->rd_start));
82 linux_env_set ("initrd_size", env_buf);
84 sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
85 linux_env_set ("flash_start", env_buf);
87 sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
88 linux_env_set ("flash_size", env_buf);
90 cp = getenv("ethaddr");
92 linux_env_set("ethaddr", cp);
95 cp = getenv("eth1addr");
97 linux_env_set("eth1addr", cp);
100 /* we assume that the kernel is in place */
101 printf ("\nStarting kernel ...\n\n");
103 theKernel (linux_argc, linux_argv, linux_env, 0);
104 /* does not return */
108 static void linux_params_init (ulong start, char *line)
110 char *next, *quote, *argp;
113 linux_argv = (char **) start;
115 argp = (char *) (linux_argv + LINUX_MAX_ARGS);
119 while (line && *line && linux_argc < LINUX_MAX_ARGS) {
120 quote = strchr (line, '"');
121 next = strchr (line, ' ');
123 while (next != NULL && quote != NULL && quote < next) {
124 /* we found a left quote before the next blank
125 * now we have to find the matching right quote
127 next = strchr (quote + 1, '"');
129 quote = strchr (next + 1, '"');
130 next = strchr (next + 1, ' ');
135 next = line + strlen (line);
138 linux_argv[linux_argc] = argp;
139 memcpy (argp, line, next - line);
140 argp[next - line] = 0;
142 argp += next - line + 1;
151 linux_env = (char **) (((ulong) argp + 15) & ~15);
153 linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
157 static void linux_env_set (char *env_name, char *env_val)
159 if (linux_env_idx < LINUX_MAX_ENVS - 1) {
160 linux_env[linux_env_idx] = linux_env_p;
162 strcpy (linux_env_p, env_name);
163 linux_env_p += strlen (env_name);
165 strcpy (linux_env_p, "=");
168 strcpy (linux_env_p, env_val);
169 linux_env_p += strlen (env_val);
172 linux_env[++linux_env_idx] = 0;