blob: 2f567452e7acd890b4609bc7e166ab4bc98e743e [file] [log] [blame]
Pete Popovbdf21b12005-07-14 17:47:57 +00001/*
2 *
3 * Per Hallsmark, per.hallsmark@mvista.com
4 *
5 * Based on jmr3927/common/prom.c
6 *
7 * 2004 (c) MontaVista Software, Inc. This file is licensed under the
8 * terms of the GNU General Public License version 2. This program is
9 * licensed "as is" without any warranty of any kind, whether express
10 * or implied.
11 */
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/string.h>
Vitaly Wool7009af82006-10-04 19:19:58 +040016#include <linux/serial_pnx8xxx.h>
Pete Popovbdf21b12005-07-14 17:47:57 +000017
18#include <asm/bootinfo.h>
19#include <uart.h>
20
21/* #define DEBUG_CMDLINE */
22
23extern int prom_argc;
24extern char **prom_argv, **prom_envp;
25
26typedef struct
27{
28 char *name;
29/* char *val; */
30}t_env_var;
31
32
33char * prom_getcmdline(void)
34{
35 return &(arcs_cmdline[0]);
36}
37
Vitaly Woolf0647a52006-12-08 11:40:35 +030038void __init prom_init_cmdline(void)
Pete Popovbdf21b12005-07-14 17:47:57 +000039{
Vitaly Woolf0647a52006-12-08 11:40:35 +030040 int i;
Pete Popovbdf21b12005-07-14 17:47:57 +000041
Vitaly Woolf0647a52006-12-08 11:40:35 +030042 arcs_cmdline[0] = '\0';
43 for (i = 0; i < prom_argc; i++) {
44 strcat(arcs_cmdline, prom_argv[i]);
45 strcat(arcs_cmdline, " ");
Pete Popovbdf21b12005-07-14 17:47:57 +000046 }
Pete Popovbdf21b12005-07-14 17:47:57 +000047}
48
49char *prom_getenv(char *envname)
50{
51 /*
52 * Return a pointer to the given environment variable.
53 * Environment variables are stored in the form of "memsize=64".
54 */
55
56 t_env_var *env = (t_env_var *)prom_envp;
57 int i;
58
59 i = strlen(envname);
60
61 while(env->name) {
62 if(strncmp(envname, env->name, i) == 0) {
63 return(env->name + strlen(envname) + 1);
64 }
65 env++;
66 }
67 return(NULL);
68}
69
70inline unsigned char str2hexnum(unsigned char c)
71{
72 if(c >= '0' && c <= '9')
73 return c - '0';
74 if(c >= 'a' && c <= 'f')
75 return c - 'a' + 10;
76 if(c >= 'A' && c <= 'F')
77 return c - 'A' + 10;
78 return 0; /* foo */
79}
80
81inline void str2eaddr(unsigned char *ea, unsigned char *str)
82{
83 int i;
84
85 for(i = 0; i < 6; i++) {
86 unsigned char num;
87
88 if((*str == '.') || (*str == ':'))
89 str++;
90 num = str2hexnum(*str++) << 4;
91 num |= (str2hexnum(*str++));
92 ea[i] = num;
93 }
94}
95
96int get_ethernet_addr(char *ethernet_addr)
97{
98 char *ethaddr_str;
99
100 ethaddr_str = prom_getenv("ethaddr");
101 if (!ethaddr_str) {
102 printk("ethaddr not set in boot prom\n");
103 return -1;
104 }
105 str2eaddr(ethernet_addr, ethaddr_str);
106 return 0;
107}
108
Atsushi Nemotoc44e8d52006-12-30 00:43:59 +0900109void __init prom_free_prom_memory(void)
Pete Popovbdf21b12005-07-14 17:47:57 +0000110{
Pete Popovbdf21b12005-07-14 17:47:57 +0000111}
112
113extern int pnx8550_console_port;
114
Ralf Baechle36a88532007-03-01 11:56:43 +0000115/* used by early printk */
Pete Popovbdf21b12005-07-14 17:47:57 +0000116void prom_putchar(char c)
117{
118 if (pnx8550_console_port != -1) {
119 /* Wait until FIFO not full */
Vitaly Wool7009af82006-10-04 19:19:58 +0400120 while( ((ip3106_fifo(UART_BASE, pnx8550_console_port) & PNX8XXX_UART_FIFO_TXFIFO) >> 16) >= 16)
Pete Popovbdf21b12005-07-14 17:47:57 +0000121 ;
122 /* Send one char */
123 ip3106_fifo(UART_BASE, pnx8550_console_port) = c;
124 }
125}
126
127EXPORT_SYMBOL(prom_getcmdline);
128EXPORT_SYMBOL(get_ethernet_addr);
129EXPORT_SYMBOL(str2eaddr);