mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-22 17:38:58 +02:00
015aed1317
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7916 3c298f89-4303-0410-b956-a3cf2f4a3e73
125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
/*
|
|
* $Id$
|
|
*
|
|
* ZyXEL's Bootbase specific prom routines
|
|
*
|
|
* Copyright (C) 2007 OpenWrt.org
|
|
* Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
|
|
*
|
|
* 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 <asm/byteorder.h>
|
|
|
|
#include <adm5120_defs.h>
|
|
#include <prom/zynos.h>
|
|
#include "prom_read.h"
|
|
|
|
#define ZYNOS_INFO_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x3F90)
|
|
#define ZYNOS_HDBG_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x4000)
|
|
#define BOOTEXT_ADDR_MIN KSEG1ADDR(ADM5120_SRAM0_BASE)
|
|
#define BOOTEXT_ADDR_MAX (BOOTEXT_ADDR_MIN + (2*1024*1024))
|
|
|
|
static int bootbase_found = 0;
|
|
static struct zynos_board_info *board_info;
|
|
|
|
struct bootbase_info bootbase_info;
|
|
|
|
static inline int bootbase_dbgarea_present(u8 *data)
|
|
{
|
|
u32 t;
|
|
|
|
t = prom_read_be32(data+5);
|
|
if (t != ZYNOS_MAGIC_DBGAREA1)
|
|
return 0;
|
|
|
|
t = prom_read_be32(data+9);
|
|
if (t != ZYNOS_MAGIC_DBGAREA2)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static inline u32 bootbase_get_bootext_addr(void)
|
|
{
|
|
return prom_read_be32(&board_info->bootext_addr);
|
|
}
|
|
|
|
static inline u16 bootbase_get_vendor_id(void)
|
|
{
|
|
#define CHECK_VENDOR(n) (strnicmp(board_info->vendor,(n),strlen(n)) == 0)
|
|
unsigned char vendor[ZYNOS_NAME_LEN];
|
|
int i;
|
|
|
|
for (i=0; i<ZYNOS_NAME_LEN; i++)
|
|
vendor[i]=board_info->vendor[i];
|
|
|
|
if CHECK_VENDOR(ZYNOS_VENDOR_ZYXEL)
|
|
return ZYNOS_VENDOR_ID_ZYXEL;
|
|
|
|
if CHECK_VENDOR(ZYNOS_VENDOR_DLINK)
|
|
return ZYNOS_VENDOR_ID_DLINK;
|
|
|
|
if CHECK_VENDOR(ZYNOS_VENDOR_LUCENT)
|
|
return ZYNOS_VENDOR_ID_LUCENT;
|
|
|
|
if CHECK_VENDOR(ZYNOS_VENDOR_NETGEAR)
|
|
return ZYNOS_VENDOR_ID_NETGEAR;
|
|
|
|
return ZYNOS_VENDOR_ID_OTHER;
|
|
}
|
|
|
|
static inline u16 bootbase_get_board_id(void)
|
|
{
|
|
return prom_read_be16(&board_info->board_id);
|
|
}
|
|
|
|
int __init bootbase_present(void)
|
|
{
|
|
u32 t;
|
|
|
|
if (bootbase_found)
|
|
goto out;
|
|
|
|
/* check presence of the dbgarea */
|
|
if (bootbase_dbgarea_present((u8 *)ZYNOS_HDBG_ADDR) == 0)
|
|
goto out;
|
|
|
|
board_info = (struct zynos_board_info *)(ZYNOS_INFO_ADDR);
|
|
|
|
/* check for a valid BootExt address */
|
|
t = bootbase_get_bootext_addr();
|
|
if ((t < BOOTEXT_ADDR_MIN) || (t > BOOTEXT_ADDR_MAX))
|
|
goto out;
|
|
|
|
bootbase_info.vendor_id = bootbase_get_vendor_id();
|
|
bootbase_info.board_id = bootbase_get_board_id();
|
|
|
|
bootbase_found = 1;
|
|
|
|
out:
|
|
return bootbase_found;
|
|
}
|
|
|