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Diffstat (limited to 'arch/mips/mips-boards/generic/init.c')
-rw-r--r-- | arch/mips/mips-boards/generic/init.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/arch/mips/mips-boards/generic/init.c b/arch/mips/mips-boards/generic/init.c new file mode 100644 index 000000000..f5b71c020 --- /dev/null +++ b/arch/mips/mips-boards/generic/init.c @@ -0,0 +1,126 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * ######################################################################## + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * 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., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * ######################################################################## + * + * PROM library initialisation code. + */ +#include <linux/config.h> +#include <linux/init.h> +#include <linux/string.h> +#include <linux/kernel.h> + +#include <asm/mips-boards/prom.h> + +/* Environment variable */ +typedef struct +{ + char *name; + char *val; +}t_env_var; + +int prom_argc; +char **prom_argv, **prom_envp; + +int init_debug = 0; + +char *prom_getenv(char *envname) +{ + /* + * Return a pointer to the given environment variable. + */ + + 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->val); + } + env++; + } + return(NULL); +} + +static inline unsigned char str2hexnum(unsigned char c) +{ + if(c >= '0' && c <= '9') + return c - '0'; + if(c >= 'a' && c <= 'f') + return c - 'a' + 10; + return 0; /* foo */ +} + +static 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 (init_debug > 1) + { + 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)); + } + + return 0; +} + +int __init prom_init(int argc, char **argv, char **envp) +{ + prom_argc = argc; + prom_argv = argv; + prom_envp = envp; + + mips_display_message("LINUX"); + + setup_prom_printf(); + prom_printf("\nLINUX started...\n"); + + prom_init_cmdline(); + + prom_meminit(); + + return 0; +} |