143 lines
2.9 KiB
C
143 lines
2.9 KiB
C
/*
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* $Id$
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*
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* Mikrotik's RouterBOOT specific prom routines
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*
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* Copyright (C) 2007 OpenWrt.org
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* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <linux/types.h>
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#include <linux/autoconf.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <asm/bootinfo.h>
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#include <asm/addrspace.h>
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#include <adm5120_defs.h>
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#include <prom/routerboot.h>
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#include "prom_read.h"
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static struct rb_hard_settings rb_hs;
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static int rb_found = 0;
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static int __init routerboot_load_hs(u8 *buf, u16 buflen)
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{
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u16 id,len;
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u8 *mac;
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int i,j;
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memset(&rb_hs, 0, sizeof(rb_hs));
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if (buflen < 4)
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return -1;
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if (prom_read_le32(buf) != RB_MAGIC_HARD)
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return -1;
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/* skip magic value */
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buf += 4;
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buflen -= 4;
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while (buflen > 2) {
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id = prom_read_le16(buf);
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buf += 2;
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buflen -= 2;
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if (id == RB_ID_TERMINATOR || buflen < 2)
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break;
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len = prom_read_le16(buf);
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buf += 2;
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buflen -= 2;
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if (buflen < len)
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break;
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switch (id) {
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case RB_ID_BIOS_VERSION:
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rb_hs.bios_ver = (char *)buf;
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break;
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case RB_ID_BOARD_NAME:
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rb_hs.name = (char *)buf;
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break;
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case RB_ID_MEMORY_SIZE:
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rb_hs.mem_size = prom_read_le32(buf);
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break;
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case RB_ID_MAC_ADDRESS_COUNT:
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rb_hs.mac_count = prom_read_le32(buf);
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break;
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case RB_ID_MAC_ADDRESS_PACK:
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rb_hs.mac_count = len/RB_MAC_SIZE;
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if (rb_hs.mac_count > RB_MAX_MAC_COUNT)
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rb_hs.mac_count = RB_MAX_MAC_COUNT;
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mac = buf;
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for (i=0; i < rb_hs.mac_count; i++) {
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for (j=0; j < RB_MAC_SIZE; j++)
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rb_hs.macs[i][j] = mac[j];
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mac += RB_MAC_SIZE;
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}
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break;
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}
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buf += len;
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buflen -= len;
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}
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return 0;
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}
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#define RB_BS_OFFS 0x14
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#define RB_OFFS_MAX (128*1024)
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int __init routerboot_present(void)
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{
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struct rb_bios_settings *bs;
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u8 *base;
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u32 off,len;
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if (rb_found)
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goto out;
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base = (u8 *)KSEG1ADDR(ADM5120_SRAM0_BASE);
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bs = (struct rb_bios_settings *)(base + RB_BS_OFFS);
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off = prom_read_le32(&bs->hs_offs);
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len = prom_read_le32(&bs->hs_size);
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if (off > RB_OFFS_MAX)
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goto out;
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if (routerboot_load_hs(base+off, len) != 0)
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goto out;
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rb_found = 1;
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out:
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return rb_found;
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}
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char *routerboot_get_boardname(void)
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{
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if (rb_found == 0)
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return NULL;
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return rb_hs.name;
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}
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