diff options
Diffstat (limited to 'arch/mips/ite-boards/generic/pmon_prom.c')
-rw-r--r-- | arch/mips/ite-boards/generic/pmon_prom.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/arch/mips/ite-boards/generic/pmon_prom.c b/arch/mips/ite-boards/generic/pmon_prom.c new file mode 100644 index 000000000000..6e505af0cc08 --- /dev/null +++ b/arch/mips/ite-boards/generic/pmon_prom.c | |||
@@ -0,0 +1,136 @@ | |||
1 | /* | ||
2 | * | ||
3 | * BRIEF MODULE DESCRIPTION | ||
4 | * PROM library initialisation code, assuming a version of | ||
5 | * pmon is the boot code. | ||
6 | * | ||
7 | * Copyright 2000 MontaVista Software Inc. | ||
8 | * Author: MontaVista Software, Inc. | ||
9 | * ppopov@mvista.com or source@mvista.com | ||
10 | * | ||
11 | * This file was derived from Carsten Langgaard's | ||
12 | * arch/mips/mips-boards/xx files. | ||
13 | * | ||
14 | * Carsten Langgaard, carstenl@mips.com | ||
15 | * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. | ||
16 | * | ||
17 | * This program is free software; you can redistribute it and/or modify it | ||
18 | * under the terms of the GNU General Public License as published by the | ||
19 | * Free Software Foundation; either version 2 of the License, or (at your | ||
20 | * option) any later version. | ||
21 | * | ||
22 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | ||
23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | ||
24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | ||
25 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
26 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
27 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | ||
28 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | ||
29 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
31 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
32 | * | ||
33 | * You should have received a copy of the GNU General Public License along | ||
34 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
35 | * 675 Mass Ave, Cambridge, MA 02139, USA. | ||
36 | */ | ||
37 | |||
38 | #include <linux/config.h> | ||
39 | #include <linux/kernel.h> | ||
40 | #include <linux/init.h> | ||
41 | #include <linux/string.h> | ||
42 | |||
43 | #include <asm/bootinfo.h> | ||
44 | |||
45 | extern int prom_argc; | ||
46 | extern char **prom_argv, **prom_envp; | ||
47 | |||
48 | typedef struct | ||
49 | { | ||
50 | char *name; | ||
51 | /* char *val; */ | ||
52 | }t_env_var; | ||
53 | |||
54 | |||
55 | char * __init prom_getcmdline(void) | ||
56 | { | ||
57 | return &(arcs_cmdline[0]); | ||
58 | } | ||
59 | |||
60 | void __init prom_init_cmdline(void) | ||
61 | { | ||
62 | char *cp; | ||
63 | int actr; | ||
64 | |||
65 | actr = 1; /* Always ignore argv[0] */ | ||
66 | |||
67 | cp = &(arcs_cmdline[0]); | ||
68 | while(actr < prom_argc) { | ||
69 | strcpy(cp, prom_argv[actr]); | ||
70 | cp += strlen(prom_argv[actr]); | ||
71 | *cp++ = ' '; | ||
72 | actr++; | ||
73 | } | ||
74 | if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ | ||
75 | --cp; | ||
76 | *cp = '\0'; | ||
77 | |||
78 | } | ||
79 | |||
80 | |||
81 | char *prom_getenv(char *envname) | ||
82 | { | ||
83 | /* | ||
84 | * Return a pointer to the given environment variable. | ||
85 | * Environment variables are stored in the form of "memsize=64". | ||
86 | */ | ||
87 | |||
88 | t_env_var *env = (t_env_var *)prom_envp; | ||
89 | int i; | ||
90 | |||
91 | i = strlen(envname); | ||
92 | |||
93 | while(env->name) { | ||
94 | if(strncmp(envname, env->name, i) == 0) { | ||
95 | return(env->name + strlen(envname) + 1); | ||
96 | } | ||
97 | env++; | ||
98 | } | ||
99 | return(NULL); | ||
100 | } | ||
101 | |||
102 | static inline unsigned char str2hexnum(unsigned char c) | ||
103 | { | ||
104 | if(c >= '0' && c <= '9') | ||
105 | return c - '0'; | ||
106 | if(c >= 'a' && c <= 'f') | ||
107 | return c - 'a' + 10; | ||
108 | return 0; /* foo */ | ||
109 | } | ||
110 | |||
111 | unsigned long __init prom_free_prom_memory(void) | ||
112 | { | ||
113 | return 0; | ||
114 | } | ||
115 | |||
116 | unsigned long __init prom_get_memsize(void) | ||
117 | { | ||
118 | char *memsize_str; | ||
119 | unsigned int memsize; | ||
120 | |||
121 | memsize_str = prom_getenv("memsize"); | ||
122 | if (!memsize_str) { | ||
123 | #ifdef CONFIG_MIPS_ITE8172 | ||
124 | memsize = 32; | ||
125 | #elif defined(CONFIG_MIPS_IVR) | ||
126 | memsize = 64; | ||
127 | #else | ||
128 | memsize = 8; | ||
129 | #endif | ||
130 | printk("memsize unknown: setting to %dMB\n", memsize); | ||
131 | } else { | ||
132 | printk("memsize: %s\n", memsize_str); | ||
133 | memsize = simple_strtol(memsize_str, NULL, 0); | ||
134 | } | ||
135 | return memsize; | ||
136 | } | ||