diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/au1000/common/prom.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/mips/au1000/common/prom.c')
-rw-r--r-- | arch/mips/au1000/common/prom.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/mips/au1000/common/prom.c b/arch/mips/au1000/common/prom.c new file mode 100644 index 000000000000..22e5a85af4d5 --- /dev/null +++ b/arch/mips/au1000/common/prom.c | |||
@@ -0,0 +1,162 @@ | |||
1 | /* | ||
2 | * | ||
3 | * BRIEF MODULE DESCRIPTION | ||
4 | * PROM library initialisation code, assuming a version of | ||
5 | * pmon is the boot code. | ||
6 | * | ||
7 | * Copyright 2000,2001 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/module.h> | ||
39 | #include <linux/kernel.h> | ||
40 | #include <linux/init.h> | ||
41 | #include <linux/string.h> | ||
42 | |||
43 | #include <asm/bootinfo.h> | ||
44 | |||
45 | /* #define DEBUG_CMDLINE */ | ||
46 | |||
47 | extern int prom_argc; | ||
48 | extern char **prom_argv, **prom_envp; | ||
49 | |||
50 | typedef struct | ||
51 | { | ||
52 | char *name; | ||
53 | /* char *val; */ | ||
54 | }t_env_var; | ||
55 | |||
56 | |||
57 | char * prom_getcmdline(void) | ||
58 | { | ||
59 | return &(arcs_cmdline[0]); | ||
60 | } | ||
61 | |||
62 | void prom_init_cmdline(void) | ||
63 | { | ||
64 | char *cp; | ||
65 | int actr; | ||
66 | |||
67 | actr = 1; /* Always ignore argv[0] */ | ||
68 | |||
69 | cp = &(arcs_cmdline[0]); | ||
70 | while(actr < prom_argc) { | ||
71 | strcpy(cp, prom_argv[actr]); | ||
72 | cp += strlen(prom_argv[actr]); | ||
73 | *cp++ = ' '; | ||
74 | actr++; | ||
75 | } | ||
76 | if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ | ||
77 | --cp; | ||
78 | *cp = '\0'; | ||
79 | |||
80 | } | ||
81 | |||
82 | |||
83 | char *prom_getenv(char *envname) | ||
84 | { | ||
85 | /* | ||
86 | * Return a pointer to the given environment variable. | ||
87 | * Environment variables are stored in the form of "memsize=64". | ||
88 | */ | ||
89 | |||
90 | t_env_var *env = (t_env_var *)prom_envp; | ||
91 | int i; | ||
92 | |||
93 | i = strlen(envname); | ||
94 | |||
95 | while(env->name) { | ||
96 | if(strncmp(envname, env->name, i) == 0) { | ||
97 | return(env->name + strlen(envname) + 1); | ||
98 | } | ||
99 | env++; | ||
100 | } | ||
101 | return(NULL); | ||
102 | } | ||
103 | |||
104 | inline unsigned char str2hexnum(unsigned char c) | ||
105 | { | ||
106 | if(c >= '0' && c <= '9') | ||
107 | return c - '0'; | ||
108 | if(c >= 'a' && c <= 'f') | ||
109 | return c - 'a' + 10; | ||
110 | if(c >= 'A' && c <= 'F') | ||
111 | return c - 'A' + 10; | ||
112 | return 0; /* foo */ | ||
113 | } | ||
114 | |||
115 | inline void str2eaddr(unsigned char *ea, unsigned char *str) | ||
116 | { | ||
117 | int i; | ||
118 | |||
119 | for(i = 0; i < 6; i++) { | ||
120 | unsigned char num; | ||
121 | |||
122 | if((*str == '.') || (*str == ':')) | ||
123 | str++; | ||
124 | num = str2hexnum(*str++) << 4; | ||
125 | num |= (str2hexnum(*str++)); | ||
126 | ea[i] = num; | ||
127 | } | ||
128 | } | ||
129 | |||
130 | int get_ethernet_addr(char *ethernet_addr) | ||
131 | { | ||
132 | char *ethaddr_str; | ||
133 | |||
134 | ethaddr_str = prom_getenv("ethaddr"); | ||
135 | if (!ethaddr_str) { | ||
136 | printk("ethaddr not set in boot prom\n"); | ||
137 | return -1; | ||
138 | } | ||
139 | str2eaddr(ethernet_addr, ethaddr_str); | ||
140 | |||
141 | #if 0 | ||
142 | { | ||
143 | int i; | ||
144 | |||
145 | printk("get_ethernet_addr: "); | ||
146 | for (i=0; i<5; i++) | ||
147 | printk("%02x:", (unsigned char)*(ethernet_addr+i)); | ||
148 | printk("%02x\n", *(ethernet_addr+i)); | ||
149 | } | ||
150 | #endif | ||
151 | |||
152 | return 0; | ||
153 | } | ||
154 | |||
155 | unsigned long __init prom_free_prom_memory(void) | ||
156 | { | ||
157 | return 0; | ||
158 | } | ||
159 | |||
160 | EXPORT_SYMBOL(prom_getcmdline); | ||
161 | EXPORT_SYMBOL(get_ethernet_addr); | ||
162 | EXPORT_SYMBOL(str2eaddr); | ||