Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 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> |
Vitaly Wool | 7009af8 | 2006-10-04 19:19:58 +0400 | [diff] [blame] | 16 | #include <linux/serial_pnx8xxx.h> |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 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 | |
| 33 | char * prom_getcmdline(void) |
| 34 | { |
| 35 | return &(arcs_cmdline[0]); |
| 36 | } |
| 37 | |
Vitaly Wool | f0647a5 | 2006-12-08 11:40:35 +0300 | [diff] [blame] | 38 | void __init prom_init_cmdline(void) |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 39 | { |
Vitaly Wool | f0647a5 | 2006-12-08 11:40:35 +0300 | [diff] [blame] | 40 | int i; |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 41 | |
Vitaly Wool | f0647a5 | 2006-12-08 11:40:35 +0300 | [diff] [blame] | 42 | arcs_cmdline[0] = '\0'; |
| 43 | for (i = 0; i < prom_argc; i++) { |
| 44 | strcat(arcs_cmdline, prom_argv[i]); |
| 45 | strcat(arcs_cmdline, " "); |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 46 | } |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
Atsushi Nemoto | c44e8d5 | 2006-12-30 00:43:59 +0900 | [diff] [blame] | 109 | void __init prom_free_prom_memory(void) |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 110 | { |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | extern int pnx8550_console_port; |
| 114 | |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 115 | /* used by early printk */ |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 116 | void prom_putchar(char c) |
| 117 | { |
| 118 | if (pnx8550_console_port != -1) { |
| 119 | /* Wait until FIFO not full */ |
Vitaly Wool | 7009af8 | 2006-10-04 19:19:58 +0400 | [diff] [blame] | 120 | while( ((ip3106_fifo(UART_BASE, pnx8550_console_port) & PNX8XXX_UART_FIFO_TXFIFO) >> 16) >= 16) |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 121 | ; |
| 122 | /* Send one char */ |
| 123 | ip3106_fifo(UART_BASE, pnx8550_console_port) = c; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | EXPORT_SYMBOL(prom_getcmdline); |
| 128 | EXPORT_SYMBOL(get_ethernet_addr); |
| 129 | EXPORT_SYMBOL(str2eaddr); |