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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /* * * BRIEF MODULE DESCRIPTION * PROM library initialisation code, assuming a version of * pmon is the boot code. * * Copyright 2000,2001 MontaVista Software Inc. * Author: MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com * * This file was derived from Carsten Langgaard's * arch/mips/mips-boards/xx files. * * Carsten Langgaard, carstenl@mips.com * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/string.h> #include <asm/bootinfo.h> /* #define DEBUG_CMDLINE */ char arcs_cmdline[CL_SIZE]; extern int prom_argc; extern char **prom_argv, **prom_envp; typedef struct { char *name; /* char *val; */ }t_env_var; char * prom_getcmdline(void) { return &(arcs_cmdline[0]); } void prom_init_cmdline(void) { char *cp; int actr; actr = 1; /* Always ignore argv[0] */ cp = &(arcs_cmdline[0]); while(actr < prom_argc) { strcpy(cp, prom_argv[actr]); cp += strlen(prom_argv[actr]); *cp++ = ' '; actr++; } if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ --cp; *cp = '\0'; } char *prom_getenv(char *envname) { /* * Return a pointer to the given environment variable. * Environment variables are stored in the form of "memsize=64". */ t_env_var *env = (t_env_var *)prom_envp; int i; i = strlen(envname); while(env->name) { if(strncmp(envname, env->name, i) == 0) { return(env->name + strlen(envname) + 1); } env++; } return(NULL); } inline unsigned char str2hexnum(unsigned char c) { if(c >= '0' && c <= '9') return c - '0'; if(c >= 'a' && c <= 'f') return c - 'a' + 10; if(c >= 'A' && c <= 'F') return c - 'A' + 10; return 0; /* foo */ } inline void str2eaddr(unsigned char *ea, unsigned char *str) { int i; for(i = 0; i < 6; i++) { unsigned char num; if((*str == '.') || (*str == ':')) str++; num = str2hexnum(*str++) << 4; num |= (str2hexnum(*str++)); ea[i] = num; } } int get_ethernet_addr(char *ethernet_addr) { char *ethaddr_str; ethaddr_str = prom_getenv("ethaddr"); if (!ethaddr_str) { printk("ethaddr not set in boot prom\n"); return -1; } str2eaddr(ethernet_addr, ethaddr_str); #if 0 { int i; printk("get_ethernet_addr: "); for (i=0; i<5; i++) printk("%02x:", (unsigned char)*(ethernet_addr+i)); printk("%02x\n", *(ethernet_addr+i)); } #endif return 0; } void prom_free_prom_memory (void) {} EXPORT_SYMBOL(prom_getcmdline); EXPORT_SYMBOL(get_ethernet_addr); |