From 453356e6757b74a718b89cbaef0efeb384cdaa8f Mon Sep 17 00:00:00 2001
From: Florian Fainelli <florian@openwrt.org>
Date: Thu, 3 Aug 2006 14:43:03 +0000
Subject: [PATCH] Use the rewritten flash map driver, huge thanks nbd !
SVN-Revision: 4425
---
.../patches/040-bcm963xx_flashmap.patch | 241 +++++++++++-------
1 file changed, 150 insertions(+), 91 deletions(-)
diff --git a/openwrt/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch b/openwrt/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
index d8acdfa9a0..c160e23dce 100644
--- a/openwrt/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
+++ b/openwrt/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
@@ -1,135 +1,194 @@
-diff -urN linux-2.6.16.7/drivers/mtd/maps/bcm963xx.c linux-2.6.16.7-brcm63xx/drivers/mtd/maps/bcm963xx.c
---- linux-2.6.16.7/drivers/mtd/maps/bcm963xx.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.16.7-brcm63xx/drivers/mtd/maps/bcm963xx.c 2006-07-07 22:00:36.000000000 +0200
-@@ -0,0 +1,106 @@
+diff -urN linux-2.6.17/drivers/mtd/maps/bcm963xx-flash.c linux-2.6.17-brcm63xx/drivers/mtd/maps/bcm963xx-flash.c
+--- linux-2.6.17/drivers/mtd/maps/bcm963xx-flash.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.17-brcm63xx/drivers/mtd/maps/bcm963xx-flash.c 2006-08-03 16:29:52.000000000 +0200
+@@ -0,0 +1,116 @@
+/*
-+ * A simple flash mapping code for BCM963xx board flash memory
-+ * It is simple because it only treats all the flash memory as ROM
-+ * It is used with chips/map_rom.c
++ * $Id$
++ * Copyright (C) 2006 Florian Fainelli
++ * Copyright (C) $Date$ $Author$
++ *
++ * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
++ */
++
++/* This is the BCM963xx flash map driver, in its actual state it only supports BCM96348 devices
++ * this driver is able to manage both bootloader we found on these boards : CFE and RedBoot
++ *
++ * RedBoot :
++ * - this bootloader allows us to parse partitions and therefore deduce the MTD partition table
++ *
++ * CFE :
++ * - we have to use a "physically mapped flash" defined bellow
+ *
-+ * Song Wang (songw@broadcom.com)
+ */
+
-+#include <linux/module.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <linux/init.h>
+#include <asm/io.h>
-+#include <linux/mtd/mtd.h>
++#include <linux/init.h>
+#include <linux/mtd/map.h>
-+#include <linux/config.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
+
-+#include <board.h>
-+#include <bcmTag.h>
-+#define VERSION "1.0"
++#define WINDOW_ADDR 0x1e400000 /* Real address of the flash */
++#define WINDOW_SIZE 0x800000 /* Size of flash */
++#define BUSWIDTH 2 /* Buswidth */
+
-+extern PFILE_TAG kerSysImageTagGet(void);
++extern int boot_loader_type; /* For RedBoot / CFE detection */
++extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
++static struct mtd_partition *parsed_parts;
+
-+static struct mtd_info *mymtd;
++static void __exit bcm963xx_mtd_cleanup(void);
+
-+static map_word brcm_physmap_read16(struct map_info *map, unsigned long ofs)
-+{
-+ map_word val;
-+
-+ val.x[0] = __raw_readw(map->map_priv_1 + ofs);
-+
-+ return val;
-+}
++static struct mtd_info *bcm963xx_mtd_info;
+
-+static void brcm_physmap_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-+{
-+ memcpy_fromio(to, map->map_priv_1 + from, len);
-+}
++static struct map_info bcm963xx_map = {
++ .name = "bcm963xx",
++ .size = WINDOW_SIZE,
++ .bankwidth = BUSWIDTH,
++ .phys = WINDOW_ADDR,
++};
+
-+static struct map_info brcm_physmap_map = {
-+ .name = "Physically mapped flash",
-+ .bankwidth = 2,
-+ .read = brcm_physmap_read16,
-+ .copy_from = brcm_physmap_copy_from
++static struct mtd_partition bcm963xx_parts[] = {
++ { name: "bootloader", size: 0, offset: 0, mask_flags: MTD_WRITEABLE },
++ { name: "rootfs", size: 0, offset: 0},
++ { name: "jffs2", size: 5 * 0x10000, offset: 57*0x10000}
+};
+
-+static int __init init_brcm_physmap(void)
++static int __init bcm963xx_mtd_init(void)
+{
-+ PFILE_TAG pTag = NULL;
-+ u_int32_t rootfs_addr, kernel_addr;
-+ FLASH_ADDR_INFO info;
++ printk("bcm963xx: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
++ bcm963xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
-+ printk("bcm963xx_mtd driver v%s\n", VERSION);
-+ kerSysFlashAddrInfoGet( &info );
++ if (!bcm963xx_map.virt) {
++ printk("bcm963xx: Failed to ioremap\n");
++ return -EIO;
++ }
+
-+ /* Read the flash memory map from flash memory. */
-+ if (!(pTag = kerSysImageTagGet())) {
-+ printk("Failed to read image tag from flash\n");
-+ return -EIO;
-+ }
++ simple_map_init(&bcm963xx_map);
+
-+ rootfs_addr = (u_int32_t) simple_strtoul(pTag->rootfsAddress, NULL, 10);
-+ kernel_addr = (u_int32_t) simple_strtoul(pTag->kernelAddress, NULL, 10);
-+
-+ brcm_physmap_map.size = kernel_addr - rootfs_addr;
-+ brcm_physmap_map.map_priv_1 = (unsigned long)rootfs_addr;
++ bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
+
-+ if (!brcm_physmap_map.map_priv_1) {
-+ printk("Wrong rootfs starting address\n");
-+ return -EIO;
-+ }
-+
-+ if (brcm_physmap_map.size <= 0) {
-+ printk("Wrong rootfs size\n");
-+ return -EIO;
-+ }
-+
-+ mymtd = do_map_probe("map_rom", &brcm_physmap_map);
-+ if (mymtd) {
-+ mymtd->owner = THIS_MODULE;
-+ add_mtd_device(mymtd);
++ if (bcm963xx_mtd_info) {
++ bcm963xx_mtd_info->owner = THIS_MODULE;
++ int parsed_nr_parts = 0;
++ char * part_type;
+
-+ return 0;
-+ }
++#ifdef CONFIG_MTD_REDBOOT_PARTS
++ if (parsed_nr_parts == 0) {
++ int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0);
++ if (ret > 0) {
++ part_type = "RedBoot";
++ parsed_nr_parts = ret;
++ }
++ }
++#endif
++ add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
+
++ return 0;
++ }
++ iounmap(bcm963xx_map.virt);
+ return -ENXIO;
+}
+
-+static void __exit cleanup_brcm_physmap(void)
++static void __exit bcm963xx_mtd_cleanup(void)
+{
-+ if (mymtd) {
-+ del_mtd_device(mymtd);
-+ map_destroy(mymtd);
++ if (bcm963xx_mtd_info) {
++ del_mtd_partitions(bcm963xx_mtd_info);
++ map_destroy(bcm963xx_mtd_info);
+ }
-+ if (brcm_physmap_map.map_priv_1) {
-+ brcm_physmap_map.map_priv_1 = 0;
++
++ if (bcm963xx_map.virt) {
++ iounmap(bcm963xx_map.virt);
++ bcm963xx_map.virt = 0;
+ }
+}
+
-+module_init(init_brcm_physmap);
-+module_exit(cleanup_brcm_physmap);
-+
++module_init(bcm963xx_mtd_init);
++module_exit(bcm963xx_mtd_cleanup);
+
+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Song Wang songw@broadcom.com");
-+MODULE_DESCRIPTION("Configurable MTD map driver for read-only root file system");
-diff -urN linux-2.6.16.7/drivers/mtd/maps/Kconfig linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Kconfig
---- linux-2.6.16.7/drivers/mtd/maps/Kconfig 2006-04-17 23:53:25.000000000 +0200
-+++ linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Kconfig 2006-07-07 22:02:13.000000000 +0200
++MODULE_AUTHOR("Florian Fainelli");
+diff -urN linux-2.6.17/drivers/mtd/maps/Kconfig linux-2.6.17-brcm63xx/drivers/mtd/maps/Kconfig
+--- linux-2.6.17/drivers/mtd/maps/Kconfig 2006-06-18 03:49:35.000000000 +0200
++++ linux-2.6.17-brcm63xx/drivers/mtd/maps/Kconfig 2006-08-03 16:32:05.000000000 +0200
@@ -224,6 +224,13 @@
Flash memory access on 4G Systems MTX-1 Board. If you have one of
these boards and would like to use the flash chips on it, say 'Y'.
+config MTD_BCM963XX
-+ tristate "BCM963xx Flash device"
-+ depends on MIPS && MIPS_BRCM
-+ help
-+ This driver seems to detect and provide a valid flash map to the system
-+ of course, it needs checking and testing.
++ tristate "BCM963xx Flash device"
++ depends on MIPS && MIPS_BRCM
++ help
++ Flash memory access on BCM963xx boards. Currently only works with
++ RedBoot, CFE support coming soon.
+
config MTD_DILNETPC
tristate "CFI Flash device mapped on DIL/Net PC"
depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
-diff -urN linux-2.6.16.7/drivers/mtd/maps/Makefile linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Makefile
---- linux-2.6.16.7/drivers/mtd/maps/Makefile 2006-04-17 23:53:25.000000000 +0200
-+++ linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Makefile 2006-07-07 22:01:29.000000000 +0200
+diff -urN linux-2.6.17/drivers/mtd/maps/Makefile linux-2.6.17-brcm63xx/drivers/mtd/maps/Makefile
+--- linux-2.6.17/drivers/mtd/maps/Makefile 2006-06-18 03:49:35.000000000 +0200
++++ linux-2.6.17-brcm63xx/drivers/mtd/maps/Makefile 2006-08-03 16:32:27.000000000 +0200
@@ -71,3 +71,4 @@
obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
-+obj-$(CONFIG_MTD_BCM963XX) += bcm963xx.o
++obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o
+diff -urN linux-2.6.17/drivers/mtd/redboot.c linux-2.6.17-brcm63xx/drivers/mtd/redboot.c
+--- linux-2.6.17/drivers/mtd/redboot.c 2006-06-18 03:49:35.000000000 +0200
++++ linux-2.6.17-brcm63xx/drivers/mtd/redboot.c 2006-08-03 16:32:39.000000000 +0200
+@@ -39,7 +39,7 @@
+ return 1;
+ }
+
+-static int parse_redboot_partitions(struct mtd_info *master,
++int parse_redboot_partitions(struct mtd_info *master,
+ struct mtd_partition **pparts,
+ unsigned long fis_origin)
+ {
+@@ -120,11 +120,19 @@
+ goto out;
+ }
+
++ if (!fis_origin) {
++ for (i = 0; i < numslots; i++) {
++ if (!strncmp(buf[i].name, "RedBoot", 8)) {
++ fis_origin = (buf[i].flash_base & (master->size << 1) - 1);
++ }
++ }
++ }
++
+ for (i = 0; i < numslots; i++) {
+ struct fis_list *new_fl, **prev;
+
+ if (buf[i].name[0] == 0xff)
+- continue;
++ break;
+ if (!redboot_checksum(&buf[i]))
+ break;
+
+@@ -135,11 +143,10 @@
+ goto out;
+ }
+ new_fl->img = &buf[i];
+- if (fis_origin) {
+- buf[i].flash_base -= fis_origin;
+- } else {
+- buf[i].flash_base &= master->size-1;
+- }
++ if (fis_origin) {
++ buf[i].flash_base -= fis_origin;
++ }
++ buf[i].flash_base &= (master->size << 1) - 1;
+
+ /* I'm sure the JFFS2 code has done me permanent damage.
+ * I now think the following is _normal_
--
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