1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <common.h>
#include <command.h>
#include <image.h>
#include <u-boot/zlib.h>
#include <asm/byteorder.h>
#include <asm/addrspace.h>
DECLARE_GLOBAL_DATA_PTR;
#define LINUX_MAX_ENVS 256
#define LINUX_MAX_ARGS 256
static int linux_argc;
static char ** linux_argv;
static char ** linux_env;
static char * linux_env_p;
static int linux_env_idx;
static void linux_params_init (ulong start, char * commandline);
static void linux_env_set (char * env_name, char * env_val);
int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
{
void (*theKernel) (int, char **, char **, int *);
char *commandline = getenv ("bootargs");
char env_buf[12];
char *cp;
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
return 1;
/* find kernel entry point */
theKernel = (void (*)(int, char **, char **, int *))images->ep;
show_boot_progress (15);
#ifdef DEBUG
printf ("## Transferring control to Linux (at address %08lx) ...\n",
(ulong) theKernel);
#endif
linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
#ifdef CONFIG_MEMSIZE_IN_BYTES
sprintf (env_buf, "%lu", (ulong)gd->ram_size);
debug ("## Giving linux memsize in bytes, %lu\n", (ulong)gd->ram_size);
#else
sprintf (env_buf, "%lu", (ulong)(gd->ram_size >> 20));
debug ("## Giving linux memsize in MB, %lu\n", (ulong)(gd->ram_size >> 20));
#endif /* CONFIG_MEMSIZE_IN_BYTES */
linux_env_set ("memsize", env_buf);
sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (images->rd_start));
linux_env_set ("initrd_start", env_buf);
sprintf (env_buf, "0x%X", (uint) (images->rd_end - images->rd_start));
linux_env_set ("initrd_size", env_buf);
sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
linux_env_set ("flash_start", env_buf);
sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
linux_env_set ("flash_size", env_buf);
cp = getenv("ethaddr");
if (cp != NULL) {
linux_env_set("ethaddr", cp);
}
cp = getenv("eth1addr");
if (cp != NULL) {
linux_env_set("eth1addr", cp);
}
/* we assume that the kernel is in place */
printf ("\nStarting kernel ...\n\n");
theKernel (linux_argc, linux_argv, linux_env, 0);
/* does not return */
return 1;
}
static void linux_params_init (ulong start, char *line)
{
char *next, *quote, *argp;
linux_argc = 1;
linux_argv = (char **) start;
linux_argv[0] = 0;
argp = (char *) (linux_argv + LINUX_MAX_ARGS);
next = line;
while (line && *line && linux_argc < LINUX_MAX_ARGS) {
quote = strchr (line, '"');
next = strchr (line, ' ');
while (next != NULL && quote != NULL && quote < next) {
/* we found a left quote before the next blank
* now we have to find the matching right quote
*/
next = strchr (quote + 1, '"');
if (next != NULL) {
quote = strchr (next + 1, '"');
next = strchr (next + 1, ' ');
}
}
if (next == NULL) {
next = line + strlen (line);
}
linux_argv[linux_argc] = argp;
memcpy (argp, line, next - line);
argp[next - line] = 0;
argp += next - line + 1;
linux_argc++;
if (*next)
next++;
line = next;
}
linux_env = (char **) (((ulong) argp + 15) & ~15);
linux_env[0] = 0;
linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
linux_env_idx = 0;
}
static void linux_env_set (char *env_name, char *env_val)
{
if (linux_env_idx < LINUX_MAX_ENVS - 1) {
linux_env[linux_env_idx] = linux_env_p;
strcpy (linux_env_p, env_name);
linux_env_p += strlen (env_name);
strcpy (linux_env_p, "=");
linux_env_p += 1;
strcpy (linux_env_p, env_val);
linux_env_p += strlen (env_val);
linux_env_p++;
linux_env[++linux_env_idx] = 0;
}
}
|
