diff options
Diffstat (limited to 'target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/admboot.c')
| -rw-r--r-- | target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/admboot.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/admboot.c b/target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/admboot.c new file mode 100644 index 0000000..b655390 --- /dev/null +++ b/target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/admboot.c @@ -0,0 +1,55 @@ +/* + * ADMBoot specific prom routines + * + * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/errno.h> + +#include <asm/addrspace.h> +#include <asm/byteorder.h> + +#include <asm/mach-adm5120/adm5120_defs.h> +#include <prom/admboot.h> +#include "prom_read.h" + +#define ADMBOOT_MAGIC_MAC_BASE 0x636D676D /* 'mgmc' */ +#define ADMBOOT_MAGIC_MAC_BASE_BR6104XX 0x31305348 /* 'HS01' */ + +int __init admboot_get_mac_base(u32 offset, u32 len, u8 *mac) +{ + u8 *cfg; + int i; + + cfg = (u8 *) KSEG1ADDR(ADM5120_SRAM0_BASE + offset); + for (i = 0; i < len; i += 4) { + u32 magic; + + magic = prom_read_le32(cfg + i); + if (magic == ADMBOOT_MAGIC_MAC_BASE) { + int j; + + for (j = 0; j < 6; j++) + mac[j] = cfg[i + 4 + j]; + + return 0; + } + if (magic == ADMBOOT_MAGIC_MAC_BASE_BR6104XX) { + int j; + + for (j = 0; j < 6; j++) + mac[j] = cfg[i + 7 + j]; + + return 0; + } + } + + return -ENXIO; +} |