[adm5120] refactor kernel code (part 1), mark it as broken now

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7916 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/adm5120-2.6/files/arch/mips/adm5120/prom/bootbase.c

@@ -0,0 +1,124 @@
+/*
+ *  $Id$
+ *
+ *  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;
+}
+