1 /*
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>
16 #include <linux/serial_pnx8xxx.h>
17
18 #include <asm/bootinfo.h>
19 #include <uart.h>
20
21 /* #define DEBUG_CMDLINE */
22
23 extern int prom_argc;
24 extern char **prom_argv, **prom_envp;
25
26 typedef struct
27 {
28 char *name;
29 /* char *val; */
30 }t_env_var;
31
32
prom_getcmdline(void)33 char * __init prom_getcmdline(void)
34 {
35 return &(arcs_cmdline[0]);
36 }
37
prom_init_cmdline(void)38 void __init prom_init_cmdline(void)
39 {
40 int i;
41
42 arcs_cmdline[0] = '\0';
43 for (i = 0; i < prom_argc; i++) {
44 strcat(arcs_cmdline, prom_argv[i]);
45 strcat(arcs_cmdline, " ");
46 }
47 }
48
prom_getenv(char * envname)49 char *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
str2hexnum(unsigned char c)70 inline 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
str2eaddr(unsigned char * ea,unsigned char * str)81 inline 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
get_ethernet_addr(char * ethernet_addr)96 int 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
prom_free_prom_memory(void)109 void __init prom_free_prom_memory(void)
110 {
111 }
112
113 extern int pnx8550_console_port;
114
115 /* used by early printk */
prom_putchar(char c)116 void prom_putchar(char c)
117 {
118 if (pnx8550_console_port != -1) {
119 /* Wait until FIFO not full */
120 while( ((ip3106_fifo(UART_BASE, pnx8550_console_port) & PNX8XXX_UART_FIFO_TXFIFO) >> 16) >= 16)
121 ;
122 /* Send one char */
123 ip3106_fifo(UART_BASE, pnx8550_console_port) = c;
124 }
125 }
126
127 EXPORT_SYMBOL(get_ethernet_addr);
128 EXPORT_SYMBOL(str2eaddr);
129