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/*
* $Id$
*
* Mikrotik's RouterBOOT specific prom routines
*
* Copyright (C) 2007 OpenWrt.org
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
*
* 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 program is distributed in the hope that 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <linux/types.h>
#include <linux/autoconf.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <adm5120_defs.h>
#include <prom/routerboot.h>
#include "prom_read.h"
static struct rb_hard_settings rb_hs;
static int rb_found = 0;
static int __init routerboot_load_hs(u8 *buf, u16 buflen)
{
u16 id,len;
u8 *mac;
int i,j;
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:
rb_hs.mac_count = len/RB_MAC_SIZE;
if (rb_hs.mac_count > RB_MAX_MAC_COUNT)
rb_hs.mac_count = RB_MAX_MAC_COUNT;
mac = buf;
for (i=0; i < rb_hs.mac_count; i++) {
for (j=0; j < RB_MAC_SIZE; j++)
rb_hs.macs[i][j] = mac[j];
mac += RB_MAC_SIZE;
}
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;
}
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