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
|
/*
*
* BRIEF MODULE DESCRIPTION
* PROM library initialisation code, assuming a version of
* pmon is the boot code.
*
* Copyright 2000 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or support@mvista.com
*
* This file was derived from Carsten Langgaard's
* arch/mips/mips-boards/xx files.
*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
*
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
/* #define DEBUG_CMDLINE */
char arcs_cmdline[COMMAND_LINE_SIZE];
int prom_argc;
char **prom_argv, **prom_envp;
typedef struct
{
char *name;
/* char *val; */
}t_env_var;
char * __init prom_getcmdline(void)
{
return &(arcs_cmdline[0]);
}
void __init prom_init_cmdline(void)
{
char *cp;
int actr;
actr = 1; /* Always ignore argv[0] */
cp = &(arcs_cmdline[0]);
while(actr < prom_argc) {
strcpy(cp, prom_argv[actr]);
cp += strlen(prom_argv[actr]);
*cp++ = ' ';
actr++;
}
if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
--cp;
*cp = '\0';
}
char *prom_getenv(char *envname)
{
/*
* Return a pointer to the given environment variable.
* Environment variables are stored in the form of "memsize=64".
*/
t_env_var *env = (t_env_var *)prom_envp;
int i;
i = strlen(envname);
while(env->name) {
if(strncmp(envname, env->name, i) == 0) {
return(env->name + strlen(envname) + 1);
}
env++;
}
return(NULL);
}
static inline unsigned char str2hexnum(unsigned char c)
{
if(c >= '0' && c <= '9')
return c - '0';
if(c >= 'a' && c <= 'f')
return c - 'a' + 10;
return 0; /* foo */
}
int __init page_is_ram(unsigned long pagenr)
{
return 1;
}
void prom_free_prom_memory (void)
{
}
unsigned long __init prom_get_memsize(void)
{
char *memsize_str;
unsigned int memsize;
memsize_str = prom_getenv("memsize");
if (!memsize_str) {
printk("memsize unknown: setting to 32MB\n");
memsize = 32;
} else {
#ifdef DEBUG
printk("prom_memsize: %s\n", memsize_str);
#endif
memsize = simple_strtol(memsize_str, NULL, 0);
}
return memsize;
}
|
