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 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
38 static int linux_argc;
39 static char ** linux_argv;
41 static char ** linux_env;
42 static char * linux_env_p;
43 static int linux_env_idx;
45 static void linux_params_init (ulong start, char * commandline);
46 static void linux_env_set (char * env_name, char * env_val);
49 void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
50 image_header_t *hdr, int verify)
52 ulong rd_data, rd_len;
53 ulong initrd_start, initrd_end;
54 image_header_t *rd_hdr;
56 void (*theKernel) (int, char **, char **, int *);
57 char *commandline = getenv ("bootargs");
61 (void (*)(int, char **, char **, int *))image_get_ep (hdr);
64 * Check if there is an initrd image
67 show_boot_progress (9);
69 rd_hdr = (image_header_t *)simple_strtoul (argv[2], NULL, 16);
70 printf ("## Loading Ramdisk Image at %08lx ...\n", rd_hdr);
72 if (!image_check_magic (rd_hdr)) {
73 printf ("Bad Magic Number\n");
74 show_boot_progress (-10);
75 do_reset (cmdtp, flag, argc, argv);
78 if (!image_check_hcrc (rd_hdr)) {
79 printf ("Bad Header Checksum\n");
80 show_boot_progress (-11);
81 do_reset (cmdtp, flag, argc, argv);
84 show_boot_progress (10);
85 print_image_hdr (rd_hdr);
87 rd_data = image_get_data (rd_hdr);
88 rd_len = image_get_data_size (rd_hdr);
91 printf (" Verifying Checksum ... ");
92 if (!image_check_dcrc (rd_hdr)) {
93 printf ("Bad Data CRC\n");
94 show_boot_progress (-12);
95 do_reset (cmdtp, flag, argc, argv);
100 show_boot_progress (11);
102 if (!image_check_os (rd_hdr, IH_OS_LINUX) ||
103 !image_check_arch (rd_hdr, IH_ARCH_MIPS) ||
104 !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) {
105 printf ("No Linux MIPS Ramdisk Image\n");
106 show_boot_progress (-13);
107 do_reset (cmdtp, flag, argc, argv);
111 * Now check if we have a multifile image
113 } else if (image_check_type (hdr, IH_TYPE_MULTI)) {
115 * Get second entry data start address and len
117 show_boot_progress (13);
118 image_multi_getimg (hdr, 1, &rd_data, &rd_len);
123 show_boot_progress (14);
125 rd_data = rd_len = 0;
130 printf ("No initrd\n");
135 initrd_start = rd_data;
136 initrd_end = initrd_start + rd_len;
142 show_boot_progress (15);
145 printf ("## Transferring control to Linux (at address %08lx) ...\n",
149 linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
151 #ifdef CONFIG_MEMSIZE_IN_BYTES
152 sprintf (env_buf, "%lu", gd->ram_size);
154 printf ("## Giving linux memsize in bytes, %lu\n", gd->ram_size);
157 sprintf (env_buf, "%lu", gd->ram_size >> 20);
159 printf ("## Giving linux memsize in MB, %lu\n", gd->ram_size >> 20);
161 #endif /* CONFIG_MEMSIZE_IN_BYTES */
163 linux_env_set ("memsize", env_buf);
165 sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (initrd_start));
166 linux_env_set ("initrd_start", env_buf);
168 sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start));
169 linux_env_set ("initrd_size", env_buf);
171 sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
172 linux_env_set ("flash_start", env_buf);
174 sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
175 linux_env_set ("flash_size", env_buf);
177 /* we assume that the kernel is in place */
178 printf ("\nStarting kernel ...\n\n");
180 theKernel (linux_argc, linux_argv, linux_env, 0);
183 static void linux_params_init (ulong start, char *line)
185 char *next, *quote, *argp;
188 linux_argv = (char **) start;
190 argp = (char *) (linux_argv + LINUX_MAX_ARGS);
194 while (line && *line && linux_argc < LINUX_MAX_ARGS) {
195 quote = strchr (line, '"');
196 next = strchr (line, ' ');
198 while (next != NULL && quote != NULL && quote < next) {
199 /* we found a left quote before the next blank
200 * now we have to find the matching right quote
202 next = strchr (quote + 1, '"');
204 quote = strchr (next + 1, '"');
205 next = strchr (next + 1, ' ');
210 next = line + strlen (line);
213 linux_argv[linux_argc] = argp;
214 memcpy (argp, line, next - line);
215 argp[next - line] = 0;
217 argp += next - line + 1;
226 linux_env = (char **) (((ulong) argp + 15) & ~15);
228 linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
232 static void linux_env_set (char *env_name, char *env_val)
234 if (linux_env_idx < LINUX_MAX_ENVS - 1) {
235 linux_env[linux_env_idx] = linux_env_p;
237 strcpy (linux_env_p, env_name);
238 linux_env_p += strlen (env_name);
240 strcpy (linux_env_p, "=");
243 strcpy (linux_env_p, env_val);
244 linux_env_p += strlen (env_val);
247 linux_env[++linux_env_idx] = 0;