fix magicbox, convert mtd mapping to platform_device, add support for combined flash layout

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7336 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/magicbox-2.6/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 ARCH:=powerpc
 BOARD:=magicbox
 BOARDNAME:=Magicbox
-FEATURES:=jffs2
+FEATURES:=squashfs jffs2
 
 include $(INCLUDE_DIR)/kernel-build.mk
 

target/linux/magicbox-2.6/config/default

@@ -28,7 +28,7 @@ CONFIG_BLK_DEV_MAGICBOX_IDE=y
 CONFIG_BOOT_LOAD=0x00400000
 # CONFIG_BT is not set
 # CONFIG_BUBINGA is not set
-CONFIG_CMDLINE="console=ttyS0,115200 init=/etc/preinit"
+CONFIG_CMDLINE="root=/dev/mtdblock1 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200 init=/etc/preinit"
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CONSISTENT_SIZE=0x00200000
 CONFIG_CONSISTENT_START=0xff100000
@@ -103,7 +103,6 @@ CONFIG_MTD_COMPLEX_MAPPINGS=y
 # CONFIG_MTD_DOC2001PLUS is not set
 CONFIG_MTD_GEN_PROBE=y
 # CONFIG_MTD_JEDECPROBE is not set
-CONFIG_MTD_MAGICMAP=y
 CONFIG_MTD_MAP_BANK_WIDTH_1=y
 # CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
 CONFIG_MTD_MAP_BANK_WIDTH_2=y
@@ -117,13 +116,17 @@ CONFIG_MTD_MAP_BANK_WIDTH_4=y
 CONFIG_MTD_PARTITIONS=y
 # CONFIG_MTD_PCI is not set
 # CONFIG_MTD_PHRAM is not set
-# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_BANKWIDTH=2
+CONFIG_MTD_PHYSMAP_LEN=0
+CONFIG_MTD_PHYSMAP_START=0xffc00000
 # CONFIG_MTD_PLATRAM is not set
 # CONFIG_MTD_PMC551 is not set
 # CONFIG_MTD_RAM is not set
 # CONFIG_MTD_REDBOOT_PARTS is not set
 # CONFIG_MTD_ROM is not set
 # CONFIG_MTD_SLRAM is not set
+CONFIG_MTD_SPLIT_ROOTFS=y
 # CONFIG_NATSEMI is not set
 # CONFIG_NE2K_PCI is not set
 # CONFIG_NET_VENDOR_3COM is not set

target/linux/magicbox-2.6/files/arch/ppc/platforms/4xx/magicbox.c

@@ -24,6 +24,9 @@
 #include <linux/tty.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
 
 #include <asm/system.h>
 #include <asm/pci-bridge.h>
@@ -214,6 +217,50 @@ bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip)
 #endif /* DEBUG */
 }
 
+static struct resource magicbox_flash_resource = {
+	.start = 0xffc00000,
+	.end   = 0xffffffffULL,
+	.flags = IORESOURCE_MEM,
+};
+
+static struct mtd_partition magicbox_flash_parts[] = {
+	{
+		.name = "linux",
+		.offset = 0x0,
+		.size = 0x3c0000,
+	},
+	{
+		.name = "rootfs",
+		.offset = 0x100000,
+		.size = 0x2c0000,
+	}
+};
+
+static struct physmap_flash_data magicbox_flash_data = {
+	.width		= 2,
+	.parts		= magicbox_flash_parts,
+	.nr_parts	= ARRAY_SIZE(magicbox_flash_parts),
+};
+
+static struct platform_device magicbox_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev = {
+			.platform_data = &magicbox_flash_data,
+		},
+	.num_resources	= 1,
+	.resource	= &magicbox_flash_resource,
+};
+
+static int magicbox_setup_flash(void)
+{
+	platform_device_register(&magicbox_flash_device);
+
+	return 0;
+};
+
+arch_initcall (magicbox_setup_flash);
+
 void __init
 magicbox_setup_arch(void)
 {

target/linux/magicbox-2.6/files/drivers/mtd/maps/magicmap.c

@@ -1,113 +0,0 @@
-/*
- * magicmap.c: Copyleft 2005  Karol Lewandowski
- *
- * Mapping for MagicBox flash.
- * Based on walnut.c.
- *
- * Heikki Lindholm <holindho@infradead.org>
- *
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-#include <linux/autoconf.h>
-#include <asm/io.h>
-
-static struct mtd_info *flash;
-
-static struct map_info magic_map = {
-	.name =		"Magically mapped flash",
-	.phys =         0xffc00000,
-	.size =		0x400000,
-	.bankwidth =	2,
-};
-
-static struct mtd_partition magic_partitions[] = {
-	{
-		.name =   "linux",
-		.offset = 0x0,
-		.size =   0x3c0000,
-	},
-	{
-		.name =   "rootfs",
-		.offset = 0x100000,
-		.size =   0x2c0000,
-	},
-	{
-		.name =   "bootloader",
-		.offset = 0x3c0000,
-		.size =   0x040000,
-		.mask_flags = MTD_WRITEABLE,
-	},
-};
-
-int __init init_magic(void)
-{
-	u32 size, len;
-	
-	magic_map.virt =
-		(void __iomem *)ioremap(magic_map.phys, magic_map.size);
-
-	if (!magic_map.virt) {
-		printk("Failed to ioremap flash.\n");
-		return -EIO;
-	}
-
-	simple_map_init(&magic_map);
-
-	flash = do_map_probe("cfi_probe", &magic_map);
-	if (flash) {
-		flash->owner = THIS_MODULE;
-		if (flash->read(flash, 12, sizeof(u32), &len, (char *) &size) ||
-			len != 4)
-			return -ENXIO;
-		size += 0x40; /* header size of the uImage */
-		if (size < 0x400000) {
-			/* skip to next erase block */
-			if (size & (flash->erasesize - 1)) {
-				size |= (flash->erasesize - 1);
-				size += 1;
-			}
-			magic_partitions[1].offset = size;
-			magic_partitions[1].size = magic_partitions[2].offset - size;
-		}
-		
-		add_mtd_partitions(flash, magic_partitions,
-					ARRAY_SIZE(magic_partitions));
-	} else {
-		printk("map probe failed for flash\n");
-		return -ENXIO;
-	}
-
-	return 0;
-}
-
-static void __exit cleanup_magic(void)
-{
-	if (flash) {
-		del_mtd_partitions(flash);
-		map_destroy(flash);
-	}
-
-	if (magic_map.virt) {
-		iounmap((void *)magic_map.virt);
-		magic_map.virt = NULL;
-	}
-}
-
-module_init(init_magic);
-module_exit(cleanup_magic);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Karol Lewandowski");
-MODULE_DESCRIPTION("MTD map and partitions for IBM 405EP MagicBox boards");

target/linux/magicbox-2.6/image/Makefile

@@ -21,16 +21,17 @@ endef
 
 define Image/Build/jffs2-64k
 	( \
-		dd if=$(KDIR)/uImage bs=65536 conv=sync; \
+		dd if=$(KDIR)/uImage bs=1024k conv=sync; \
 		dd if=$(KDIR)/root.$(1) bs=65536 conv=sync; \
 	) > $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-$(1).img
 endef
 
-#define Image/Build/jffs2-128k
+define Image/Build/squashfs
-#	( \
+	$(call prepare_generic_squashfs,$(KDIR)/root.squashfs)
-#		dd if=$(LINUX_DIR)/arch/ppc/boot/images/uImage bs=131072 conv=sync; \
+	( \
-#		dd if=$(KDIR)/root.$(1) bs=131072 conv=sync; \
+		dd if=$(LINUX_DIR)/arch/ppc/boot/images/uImage bs=1024k conv=sync; \
-#	) > $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-$(1).img
+		dd if=$(KDIR)/root.$(1) bs=65536 conv=sync; \
-#endef
+	) > $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-$(1).img
+endef
 
 $(eval $(call BuildImage))

target/linux/magicbox-2.6/patches/002-flash_map.patch

@@ -1,30 +0,0 @@
-diff -urN linux.old/drivers/mtd/maps/Kconfig linux.dev/drivers/mtd/maps/Kconfig
---- linux.old/drivers/mtd/maps/Kconfig	2006-08-30 06:30:59.000000000 +0200
-+++ linux.dev/drivers/mtd/maps/Kconfig	2006-08-30 06:11:51.000000000 +0200
-@@ -323,6 +323,15 @@
- 	  Walnut board. If you have one of these boards and would like to
- 	  use the flash chips on it, say 'Y'.
- 
-+config MTD_MAGICMAP
-+	tristate "Flash device mapped on IBM 405EP MagicBox"
-+	depends on MTD_CFI && MTD_PARTITIONS && 40x && MAGICBOX
-+	help
-+	  This enables access routines for the flash chips on the IBM 405EP
-+	  MagicBox board. If you have one of these boards and would like to
-+	  use the flash chips on it, say 'Y'.
-+
-+
- config MTD_EBONY
- 	tristate "Flash devices mapped on IBM 440GP Ebony"
- 	depends on MTD_JEDECPROBE && EBONY
-diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile
---- linux.old/drivers/mtd/maps/Makefile	2006-08-30 06:30:59.000000000 +0200
-+++ linux.dev/drivers/mtd/maps/Makefile	2006-08-30 06:11:51.000000000 +0200
-@@ -58,6 +58,7 @@
- obj-$(CONFIG_MTD_BEECH)		+= beech-mtd.o
- obj-$(CONFIG_MTD_ARCTIC)	+= arctic-mtd.o
- obj-$(CONFIG_MTD_WALNUT)        += walnut.o
-+obj-$(CONFIG_MTD_MAGICMAP)      += magicmap.o
- obj-$(CONFIG_MTD_H720X)		+= h720x-flash.o
- obj-$(CONFIG_MTD_SBC8240)	+= sbc8240.o
- obj-$(CONFIG_MTD_NOR_TOTO)	+= omap-toto-flash.o