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openwrt-xburst/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
florian 0876cd76ed Use the rewritten flash map driver, huge thanks nbd ! 
git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4425 3c298f89-4303-0410-b956-a3cf2f4a3e73
2006-08-03 14:43:03 +00:00

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6.4 KiB
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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 @@
+/*
+ * $Id$
+ * 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
+ *
+ */
+
+#include <asm/io.h>
+#include <linux/init.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#define WINDOW_ADDR 0x1e400000 /* Real address of the flash */
+#define WINDOW_SIZE 0x800000 /* Size of flash */
+#define BUSWIDTH 2 /* Buswidth */
+
+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 void __exit bcm963xx_mtd_cleanup(void);
+
+static struct mtd_info *bcm963xx_mtd_info;
+
+static struct map_info bcm963xx_map = {
+ .name = "bcm963xx",
+ .size = WINDOW_SIZE,
+ .bankwidth = BUSWIDTH,
+ .phys = WINDOW_ADDR,
+};
+
+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 bcm963xx_mtd_init(void)
+{
+ printk("bcm963xx: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
+ bcm963xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (!bcm963xx_map.virt) {
+ printk("bcm963xx: Failed to ioremap\n");
+ return -EIO;
+ }
+
+ simple_map_init(&bcm963xx_map);
+
+ bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
+
+ if (bcm963xx_mtd_info) {
+ bcm963xx_mtd_info->owner = THIS_MODULE;
+ int parsed_nr_parts = 0;
+ char * part_type;
+
+#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 bcm963xx_mtd_cleanup(void)
+{
+ if (bcm963xx_mtd_info) {
+ del_mtd_partitions(bcm963xx_mtd_info);
+ map_destroy(bcm963xx_mtd_info);
+ }
+
+ if (bcm963xx_map.virt) {
+ iounmap(bcm963xx_map.virt);
+ bcm963xx_map.virt = 0;
+ }
+}
+
+module_init(bcm963xx_mtd_init);
+module_exit(bcm963xx_mtd_cleanup);
+
+MODULE_LICENSE("GPL");
+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
+ 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-2.6.17/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-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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