diff options
Diffstat (limited to 'target/linux/adm5120/files-3.8/arch/mips/adm5120/prom/routerboot.c')
-rw-r--r-- | target/linux/adm5120/files-3.8/arch/mips/adm5120/prom/routerboot.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/target/linux/adm5120/files-3.8/arch/mips/adm5120/prom/routerboot.c b/target/linux/adm5120/files-3.8/arch/mips/adm5120/prom/routerboot.c new file mode 100644 index 0000000000..d9a06d968e --- /dev/null +++ b/target/linux/adm5120/files-3.8/arch/mips/adm5120/prom/routerboot.c @@ -0,0 +1,121 @@ +/* + * Mikrotik's RouterBOOT specific prom routines + * + * Copyright (C) 2007-2008 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/kernel.h> +#include <linux/init.h> +#include <linux/string.h> +#include <linux/module.h> +#include <linux/routerboot.h> + +#include <asm/bootinfo.h> +#include <asm/addrspace.h> + +#include <asm/mach-adm5120/adm5120_defs.h> +#include <prom/routerboot.h> +#include "prom_read.h" + +struct rb_hard_settings rb_hs; +static int rb_found; + +static int __init routerboot_load_hs(u8 *buf, u16 buflen) +{ + u16 id, len; + + memset(&rb_hs, 0, sizeof(rb_hs)); + + if (buflen < 4) + return -1; + + if (prom_read_le32(buf) != RB_MAGIC_HARD) + return -1; + + /* skip magic value */ + buf += 4; + buflen -= 4; + + while (buflen > 2) { + id = prom_read_le16(buf); + buf += 2; + buflen -= 2; + if (id == RB_ID_TERMINATOR || buflen < 2) + break; + + len = prom_read_le16(buf); + buf += 2; + buflen -= 2; + + if (buflen < len) + break; + + switch (id) { + case RB_ID_BIOS_VERSION: + rb_hs.bios_ver = (char *)buf; + break; + case RB_ID_BOARD_NAME: + rb_hs.name = (char *)buf; + break; + case RB_ID_MEMORY_SIZE: + rb_hs.mem_size = prom_read_le32(buf); + break; + case RB_ID_MAC_ADDRESS_COUNT: + rb_hs.mac_count = prom_read_le32(buf); + break; + case RB_ID_MAC_ADDRESS_PACK: + if ((len / RB_MAC_SIZE) > 0) + rb_hs.mac_base = buf; + break; + } + + buf += len; + buflen -= len; + + } + + return 0; +} + +#define RB_BS_OFFS 0x14 +#define RB_OFFS_MAX (128*1024) + +int __init routerboot_present(void) +{ + struct rb_bios_settings *bs; + u8 *base; + u32 off, len; + + if (rb_found) + goto out; + + base = (u8 *)KSEG1ADDR(ADM5120_SRAM0_BASE); + bs = (struct rb_bios_settings *)(base + RB_BS_OFFS); + + off = prom_read_le32(&bs->hs_offs); + len = prom_read_le32(&bs->hs_size); + if (off > RB_OFFS_MAX) + goto out; + + if (routerboot_load_hs(base+off, len) != 0) + goto out; + + rb_found = 1; + +out: + return rb_found; +} + +char *routerboot_get_boardname(void) +{ + if (rb_found == 0) + return NULL; + + return rb_hs.name; +} |