summaryrefslogtreecommitdiff
path: root/arch/mips/ite-boards/generic/pmon_prom.c
blob: 7d0a79be34d816ac885d7c4947d2360de1eb3b91 (plain)
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
/*
 *
 * 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 source@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/kernel.h>
#include <linux/init.h>
#include <linux/string.h>

#include <asm/bootinfo.h>

extern int prom_argc;
extern 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 */
}

unsigned long __init prom_free_prom_memory(void)
{
	return 0;
}

unsigned long __init prom_get_memsize(void)
{
	char *memsize_str;
	unsigned int memsize;

	memsize_str = prom_getenv("memsize");
	if (!memsize_str) {
#ifdef CONFIG_MIPS_ITE8172
		memsize = 32;
#elif defined(CONFIG_MIPS_IVR)
		memsize = 64;
#else
		memsize = 8;
#endif
		printk("memsize unknown: setting to %dMB\n", memsize);
	} else {
		printk("memsize: %s\n", memsize_str);
		memsize = simple_strtol(memsize_str, NULL, 0);
	}
	return memsize;
}