122 lines
2.1 KiB
C
122 lines
2.1 KiB
C
/*
|
|
* 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;
|
|
}
|