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wdenkc0218802003-03-27 12:09:35 +00001/*
2 * (C) Copyright 2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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
21 *
22 */
23
24#include <common.h>
25#include <command.h>
wdenkc0218802003-03-27 12:09:35 +000026#include <image.h>
27#include <zlib.h>
28#include <asm/byteorder.h>
29#include <asm/addrspace.h>
30
31#define LINUX_MAX_ENVS 256
32#define LINUX_MAX_ARGS 256
33
34#ifdef CONFIG_SHOW_BOOT_PROGRESS
35# include <status_led.h>
36# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
37#else
38# define SHOW_BOOT_PROGRESS(arg)
39#endif
40
41extern image_header_t header; /* from cmd_bootm.c */
42
wdenk8bde7f72003-06-27 21:31:46 +000043extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
44
wdenkc0218802003-03-27 12:09:35 +000045static int linux_argc;
46static char ** linux_argv;
47
48static char ** linux_env;
49static char * linux_env_p;
50static int linux_env_idx;
51
52static void linux_params_init (ulong start, char * commandline);
53static void linux_env_set (char * env_name, char * env_val);
54
55
wdenk5da627a2003-10-09 20:09:04 +000056void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
57 ulong addr, ulong * len_ptr, int verify)
wdenkc0218802003-03-27 12:09:35 +000058{
wdenk5da627a2003-10-09 20:09:04 +000059 DECLARE_GLOBAL_DATA_PTR;
wdenkc0218802003-03-27 12:09:35 +000060
wdenk5da627a2003-10-09 20:09:04 +000061 ulong len = 0, checksum;
62 ulong initrd_start, initrd_end;
63 ulong data;
64 void (*theKernel) (int, char **, char **, int *);
65 image_header_t *hdr = &header;
66 char *commandline = getenv ("bootargs");
67 char env_buf[12];
wdenkc0218802003-03-27 12:09:35 +000068
wdenk5da627a2003-10-09 20:09:04 +000069 theKernel =
70 (void (*)(int, char **, char **, int *)) ntohl (hdr->ih_ep);
wdenkc0218802003-03-27 12:09:35 +000071
72 /*
wdenk5da627a2003-10-09 20:09:04 +000073 * Check if there is an initrd image
wdenkc0218802003-03-27 12:09:35 +000074 */
wdenk5da627a2003-10-09 20:09:04 +000075 if (argc >= 3) {
76 SHOW_BOOT_PROGRESS (9);
wdenkc0218802003-03-27 12:09:35 +000077
wdenk5da627a2003-10-09 20:09:04 +000078 addr = simple_strtoul (argv[2], NULL, 16);
wdenkc0218802003-03-27 12:09:35 +000079
wdenk5da627a2003-10-09 20:09:04 +000080 printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
81
82 /* Copy header so we can blank CRC field for re-calculation */
83 memcpy (&header, (char *) addr, sizeof (image_header_t));
84
85 if (ntohl (hdr->ih_magic) != IH_MAGIC) {
86 printf ("Bad Magic Number\n");
87 SHOW_BOOT_PROGRESS (-10);
88 do_reset (cmdtp, flag, argc, argv);
89 }
90
91 data = (ulong) & header;
92 len = sizeof (image_header_t);
93
94 checksum = ntohl (hdr->ih_hcrc);
95 hdr->ih_hcrc = 0;
96
97 if (crc32 (0, (char *) data, len) != checksum) {
98 printf ("Bad Header Checksum\n");
99 SHOW_BOOT_PROGRESS (-11);
100 do_reset (cmdtp, flag, argc, argv);
101 }
102
103 SHOW_BOOT_PROGRESS (10);
104
105 print_image_hdr (hdr);
106
107 data = addr + sizeof (image_header_t);
108 len = ntohl (hdr->ih_size);
109
110 if (verify) {
111 ulong csum = 0;
112
113 printf (" Verifying Checksum ... ");
114 csum = crc32 (0, (char *) data, len);
115 if (csum != ntohl (hdr->ih_dcrc)) {
116 printf ("Bad Data CRC\n");
117 SHOW_BOOT_PROGRESS (-12);
118 do_reset (cmdtp, flag, argc, argv);
119 }
120 printf ("OK\n");
121 }
122
123 SHOW_BOOT_PROGRESS (11);
124
125 if ((hdr->ih_os != IH_OS_LINUX) ||
126 (hdr->ih_arch != IH_CPU_MIPS) ||
127 (hdr->ih_type != IH_TYPE_RAMDISK)) {
128 printf ("No Linux MIPS Ramdisk Image\n");
129 SHOW_BOOT_PROGRESS (-13);
130 do_reset (cmdtp, flag, argc, argv);
131 }
132
133 /*
134 * Now check if we have a multifile image
135 */
136 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
137 ulong tail = ntohl (len_ptr[0]) % 4;
138 int i;
139
140 SHOW_BOOT_PROGRESS (13);
141
142 /* skip kernel length and terminator */
143 data = (ulong) (&len_ptr[2]);
144 /* skip any additional image length fields */
145 for (i = 1; len_ptr[i]; ++i)
146 data += 4;
147 /* add kernel length, and align */
148 data += ntohl (len_ptr[0]);
149 if (tail) {
150 data += 4 - tail;
151 }
152
153 len = ntohl (len_ptr[1]);
154
155 } else {
156 /*
157 * no initrd image
158 */
159 SHOW_BOOT_PROGRESS (14);
160
161 data = 0;
wdenkc0218802003-03-27 12:09:35 +0000162 }
163
wdenkc0218802003-03-27 12:09:35 +0000164#ifdef DEBUG
wdenk5da627a2003-10-09 20:09:04 +0000165 if (!data) {
166 printf ("No initrd\n");
167 }
wdenkc0218802003-03-27 12:09:35 +0000168#endif
169
wdenk5da627a2003-10-09 20:09:04 +0000170 if (data) {
171 initrd_start = data;
172 initrd_end = initrd_start + len;
173 } else {
174 initrd_start = 0;
175 initrd_end = 0;
176 }
wdenkc0218802003-03-27 12:09:35 +0000177
wdenk5da627a2003-10-09 20:09:04 +0000178 SHOW_BOOT_PROGRESS (15);
wdenkc0218802003-03-27 12:09:35 +0000179
180#ifdef DEBUG
wdenk5da627a2003-10-09 20:09:04 +0000181 printf ("## Transferring control to Linux (at address %08lx) ...\n",
182 (ulong) theKernel);
wdenkc0218802003-03-27 12:09:35 +0000183#endif
184
wdenka2663ea2003-12-07 18:32:37 +0000185 linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
wdenkc0218802003-03-27 12:09:35 +0000186
wdenk5da627a2003-10-09 20:09:04 +0000187#ifdef CONFIG_MEMSIZE_IN_BYTES
188 sprintf (env_buf, "%lu", gd->ram_size);
189#ifdef DEBUG
190 printf ("## Giving linux memsize in bytes, %lu\n", gd->ram_size);
191#endif
192#else
193 sprintf (env_buf, "%lu", gd->ram_size >> 20);
194#ifdef DEBUG
195 printf ("## Giving linux memsize in MB, %lu\n", gd->ram_size >> 20);
196#endif
197#endif /* CONFIG_MEMSIZE_IN_BYTES */
wdenkc0218802003-03-27 12:09:35 +0000198
wdenk5da627a2003-10-09 20:09:04 +0000199 linux_env_set ("memsize", env_buf);
wdenkc0218802003-03-27 12:09:35 +0000200
wdenka2663ea2003-12-07 18:32:37 +0000201 sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (initrd_start));
wdenk5da627a2003-10-09 20:09:04 +0000202 linux_env_set ("initrd_start", env_buf);
wdenkc0218802003-03-27 12:09:35 +0000203
wdenk5da627a2003-10-09 20:09:04 +0000204 sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start));
205 linux_env_set ("initrd_size", env_buf);
wdenkc0218802003-03-27 12:09:35 +0000206
wdenk5da627a2003-10-09 20:09:04 +0000207 sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
208 linux_env_set ("flash_start", env_buf);
wdenkc0218802003-03-27 12:09:35 +0000209
wdenk5da627a2003-10-09 20:09:04 +0000210 sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
211 linux_env_set ("flash_size", env_buf);
wdenkc0218802003-03-27 12:09:35 +0000212
wdenk5da627a2003-10-09 20:09:04 +0000213 /* we assume that the kernel is in place */
214 printf ("\nStarting kernel ...\n\n");
215
216 theKernel (linux_argc, linux_argv, linux_env, 0);
wdenkc0218802003-03-27 12:09:35 +0000217}
218
wdenk5da627a2003-10-09 20:09:04 +0000219static void linux_params_init (ulong start, char *line)
wdenkc0218802003-03-27 12:09:35 +0000220{
wdenk5da627a2003-10-09 20:09:04 +0000221 char *next, *quote, *argp;
wdenkc0218802003-03-27 12:09:35 +0000222
wdenk5da627a2003-10-09 20:09:04 +0000223 linux_argc = 1;
224 linux_argv = (char **) start;
225 linux_argv[0] = 0;
226 argp = (char *) (linux_argv + LINUX_MAX_ARGS);
wdenkc0218802003-03-27 12:09:35 +0000227
wdenk5da627a2003-10-09 20:09:04 +0000228 next = line;
wdenkc0218802003-03-27 12:09:35 +0000229
wdenk5da627a2003-10-09 20:09:04 +0000230 while (line && *line && linux_argc < LINUX_MAX_ARGS) {
231 quote = strchr (line, '"');
232 next = strchr (line, ' ');
wdenkc0218802003-03-27 12:09:35 +0000233
wdenk5da627a2003-10-09 20:09:04 +0000234 while (next != NULL && quote != NULL && quote < next) {
235 /* we found a left quote before the next blank
236 * now we have to find the matching right quote
237 */
238 next = strchr (quote + 1, '"');
239 if (next != NULL) {
240 quote = strchr (next + 1, '"');
241 next = strchr (next + 1, ' ');
242 }
243 }
244
245 if (next == NULL) {
246 next = line + strlen (line);
247 }
248
249 linux_argv[linux_argc] = argp;
250 memcpy (argp, line, next - line);
251 argp[next - line] = 0;
252
253 argp += next - line + 1;
254 linux_argc++;
255
256 if (*next)
257 next++;
258
259 line = next;
wdenk8bde7f72003-06-27 21:31:46 +0000260 }
261
wdenk5da627a2003-10-09 20:09:04 +0000262 linux_env = (char **) (((ulong) argp + 15) & ~15);
263 linux_env[0] = 0;
264 linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
265 linux_env_idx = 0;
wdenkc0218802003-03-27 12:09:35 +0000266}
267
wdenk5da627a2003-10-09 20:09:04 +0000268static void linux_env_set (char *env_name, char *env_val)
wdenkc0218802003-03-27 12:09:35 +0000269{
wdenk5da627a2003-10-09 20:09:04 +0000270 if (linux_env_idx < LINUX_MAX_ENVS - 1) {
271 linux_env[linux_env_idx] = linux_env_p;
wdenkc0218802003-03-27 12:09:35 +0000272
wdenk5da627a2003-10-09 20:09:04 +0000273 strcpy (linux_env_p, env_name);
274 linux_env_p += strlen (env_name);
wdenkc0218802003-03-27 12:09:35 +0000275
wdenk5da627a2003-10-09 20:09:04 +0000276 strcpy (linux_env_p, "=");
277 linux_env_p += 1;
wdenkc0218802003-03-27 12:09:35 +0000278
wdenk5da627a2003-10-09 20:09:04 +0000279 strcpy (linux_env_p, env_val);
280 linux_env_p += strlen (env_val);
wdenk8bde7f72003-06-27 21:31:46 +0000281
wdenk5da627a2003-10-09 20:09:04 +0000282 linux_env_p++;
283 linux_env[++linux_env_idx] = 0;
284 }
wdenkc0218802003-03-27 12:09:35 +0000285}