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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>
Jean-Christophe PLAGNIOL-VILLARDa31e0912009-04-04 12:49:11 +020027#include <u-boot/zlib.h>
wdenkc0218802003-03-27 12:09:35 +000028#include <asm/byteorder.h>
29#include <asm/addrspace.h>
30
Wolfgang Denkd87080b2006-03-31 18:32:53 +020031DECLARE_GLOBAL_DATA_PTR;
32
wdenkc0218802003-03-27 12:09:35 +000033#define LINUX_MAX_ENVS 256
34#define LINUX_MAX_ARGS 256
35
wdenkc0218802003-03-27 12:09:35 +000036static int linux_argc;
37static char ** linux_argv;
38
39static char ** linux_env;
40static char * linux_env_p;
41static int linux_env_idx;
42
43static void linux_params_init (ulong start, char * commandline);
44static void linux_env_set (char * env_name, char * env_val);
45
Wolfgang Denk54841ab2010-06-28 22:00:46 +020046int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images)
wdenkc0218802003-03-27 12:09:35 +000047{
Marian Balakowiczd5934ad2008-02-04 08:28:09 +010048 void (*theKernel) (int, char **, char **, int *);
49 char *commandline = getenv ("bootargs");
50 char env_buf[12];
Wolfgang Denk25dbe982008-07-13 23:07:35 +020051 char *cp;
Marian Balakowiczf13e7b22008-01-08 18:12:17 +010052
Kumar Gala49c3a862008-10-21 17:25:45 -050053 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
54 return 1;
55
Marian Balakowiczd5934ad2008-02-04 08:28:09 +010056 /* find kernel entry point */
Kumar Galac160a952008-08-15 08:24:36 -050057 theKernel = (void (*)(int, char **, char **, int *))images->ep;
wdenkc0218802003-03-27 12:09:35 +000058
Heiko Schocherfad63402007-07-13 09:54:17 +020059 show_boot_progress (15);
wdenkc0218802003-03-27 12:09:35 +000060
61#ifdef DEBUG
wdenk5da627a2003-10-09 20:09:04 +000062 printf ("## Transferring control to Linux (at address %08lx) ...\n",
63 (ulong) theKernel);
wdenkc0218802003-03-27 12:09:35 +000064#endif
65
wdenka2663ea2003-12-07 18:32:37 +000066 linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
wdenkc0218802003-03-27 12:09:35 +000067
wdenk5da627a2003-10-09 20:09:04 +000068#ifdef CONFIG_MEMSIZE_IN_BYTES
Wolfgang Denk25dbe982008-07-13 23:07:35 +020069 sprintf (env_buf, "%lu", (ulong)gd->ram_size);
70 debug ("## Giving linux memsize in bytes, %lu\n", (ulong)gd->ram_size);
wdenk5da627a2003-10-09 20:09:04 +000071#else
Wolfgang Denk25dbe982008-07-13 23:07:35 +020072 sprintf (env_buf, "%lu", (ulong)(gd->ram_size >> 20));
73 debug ("## Giving linux memsize in MB, %lu\n", (ulong)(gd->ram_size >> 20));
wdenk5da627a2003-10-09 20:09:04 +000074#endif /* CONFIG_MEMSIZE_IN_BYTES */
wdenkc0218802003-03-27 12:09:35 +000075
wdenk5da627a2003-10-09 20:09:04 +000076 linux_env_set ("memsize", env_buf);
wdenkc0218802003-03-27 12:09:35 +000077
Kumar Galac4f94192008-08-15 08:24:37 -050078 sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (images->rd_start));
Jean-Christophe PLAGNIOL-VILLARD72f1b652008-09-08 21:01:29 +020079 linux_env_set ("initrd_start", env_buf);
wdenkc0218802003-03-27 12:09:35 +000080
Kumar Galac4f94192008-08-15 08:24:37 -050081 sprintf (env_buf, "0x%X", (uint) (images->rd_end - images->rd_start));
wdenk5da627a2003-10-09 20:09:04 +000082 linux_env_set ("initrd_size", env_buf);
wdenkc0218802003-03-27 12:09:35 +000083
wdenk5da627a2003-10-09 20:09:04 +000084 sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
85 linux_env_set ("flash_start", env_buf);
wdenkc0218802003-03-27 12:09:35 +000086
wdenk5da627a2003-10-09 20:09:04 +000087 sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
88 linux_env_set ("flash_size", env_buf);
wdenkc0218802003-03-27 12:09:35 +000089
Jason McMullane7c37452008-06-08 23:56:00 -040090 cp = getenv("ethaddr");
91 if (cp != NULL) {
92 linux_env_set("ethaddr", cp);
93 }
94
95 cp = getenv("eth1addr");
96 if (cp != NULL) {
97 linux_env_set("eth1addr", cp);
98 }
99
wdenk5da627a2003-10-09 20:09:04 +0000100 /* we assume that the kernel is in place */
101 printf ("\nStarting kernel ...\n\n");
102
103 theKernel (linux_argc, linux_argv, linux_env, 0);
Marian Balakowiczcd7c5962008-03-12 10:33:00 +0100104 /* does not return */
Kumar Gala40d7e992008-08-15 08:24:45 -0500105 return 1;
wdenkc0218802003-03-27 12:09:35 +0000106}
107
wdenk5da627a2003-10-09 20:09:04 +0000108static void linux_params_init (ulong start, char *line)
wdenkc0218802003-03-27 12:09:35 +0000109{
wdenk5da627a2003-10-09 20:09:04 +0000110 char *next, *quote, *argp;
wdenkc0218802003-03-27 12:09:35 +0000111
wdenk5da627a2003-10-09 20:09:04 +0000112 linux_argc = 1;
113 linux_argv = (char **) start;
114 linux_argv[0] = 0;
115 argp = (char *) (linux_argv + LINUX_MAX_ARGS);
wdenkc0218802003-03-27 12:09:35 +0000116
wdenk5da627a2003-10-09 20:09:04 +0000117 next = line;
wdenkc0218802003-03-27 12:09:35 +0000118
wdenk5da627a2003-10-09 20:09:04 +0000119 while (line && *line && linux_argc < LINUX_MAX_ARGS) {
120 quote = strchr (line, '"');
121 next = strchr (line, ' ');
wdenkc0218802003-03-27 12:09:35 +0000122
wdenk5da627a2003-10-09 20:09:04 +0000123 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
126 */
127 next = strchr (quote + 1, '"');
128 if (next != NULL) {
129 quote = strchr (next + 1, '"');
130 next = strchr (next + 1, ' ');
131 }
132 }
133
134 if (next == NULL) {
135 next = line + strlen (line);
136 }
137
138 linux_argv[linux_argc] = argp;
139 memcpy (argp, line, next - line);
140 argp[next - line] = 0;
141
142 argp += next - line + 1;
143 linux_argc++;
144
145 if (*next)
146 next++;
147
148 line = next;
wdenk8bde7f72003-06-27 21:31:46 +0000149 }
150
wdenk5da627a2003-10-09 20:09:04 +0000151 linux_env = (char **) (((ulong) argp + 15) & ~15);
152 linux_env[0] = 0;
153 linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
154 linux_env_idx = 0;
wdenkc0218802003-03-27 12:09:35 +0000155}
156
wdenk5da627a2003-10-09 20:09:04 +0000157static void linux_env_set (char *env_name, char *env_val)
wdenkc0218802003-03-27 12:09:35 +0000158{
wdenk5da627a2003-10-09 20:09:04 +0000159 if (linux_env_idx < LINUX_MAX_ENVS - 1) {
160 linux_env[linux_env_idx] = linux_env_p;
wdenkc0218802003-03-27 12:09:35 +0000161
wdenk5da627a2003-10-09 20:09:04 +0000162 strcpy (linux_env_p, env_name);
163 linux_env_p += strlen (env_name);
wdenkc0218802003-03-27 12:09:35 +0000164
wdenk5da627a2003-10-09 20:09:04 +0000165 strcpy (linux_env_p, "=");
166 linux_env_p += 1;
wdenkc0218802003-03-27 12:09:35 +0000167
wdenk5da627a2003-10-09 20:09:04 +0000168 strcpy (linux_env_p, env_val);
169 linux_env_p += strlen (env_val);
wdenk8bde7f72003-06-27 21:31:46 +0000170
wdenk5da627a2003-10-09 20:09:04 +0000171 linux_env_p++;
172 linux_env[++linux_env_idx] = 0;
173 }
wdenkc0218802003-03-27 12:09:35 +0000174}