provide squashfs for bcm47xx including cfgfs partition

Signed-off-by: Thorsten Glaser <tg@mirbsd.org>

1 files changed, 75 insertions, 12 deletions

diff --git a/target/linux/patches/2.6.36/brcm.patch b/target/linux/patches/2.6.36/brcm.patch
index 44db7d0d5..10a9a4947 100644
--- a/target/linux/patches/2.6.36/brcm.patch
+++ b/target/linux/patches/2.6.36/brcm.patch
@@ -1,4 +1,3 @@
-diff -Nur linux-2.6.36.orig/arch/mips/bcm47xx/Makefile linux-2.6.36/arch/mips/bcm47xx/Makefile
 --- linux-2.6.36.orig/arch/mips/bcm47xx/Makefile	2010-10-20 22:30:22.000000000 +0200
 +++ linux-2.6.36/arch/mips/bcm47xx/Makefile	2010-12-22 16:39:15.000000000 +0100
 @@ -3,4 +3,4 @@
@@ -7,16 +6,16 @@ diff -Nur linux-2.6.36.orig/arch/mips/bcm47xx/Makefile linux-2.6.36/arch/mips/bc
  
 -obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o wgt634u.o
 +obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o platform.o
-diff -Nur linux-2.6.36.orig/arch/mips/bcm47xx/platform.c linux-2.6.36/arch/mips/bcm47xx/platform.c
---- linux-2.6.36.orig/arch/mips/bcm47xx/platform.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.36/arch/mips/bcm47xx/platform.c	2010-12-22 16:57:43.000000000 +0100
-@@ -0,0 +1,81 @@
+--- /dev/null	Fri Jan  7 17:21:57 2011
++++ linux-2.6.36/arch/mips/bcm47xx/platform.c	Fri Jan  7 17:21:42 2011
+@@ -0,0 +1,147 @@
 +/*
 + * This file is subject to the terms and conditions of the GNU General Public
 + * License.  See the file "COPYING" in the main directory of this archive
 + * for more details.
 + *
-+ * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
++ * Copyright (C) 2010, 2011 Waldemar Brodkorb <wbx@openadk.org>
++ * Copyright © 2007, 2011 Thorsten Glaser <tg@freewrt.org>
 + */
 +
 +#include <linux/platform_device.h>
@@ -28,19 +27,35 @@ diff -Nur linux-2.6.36.orig/arch/mips/bcm47xx/platform.c linux-2.6.36/arch/mips/
 +#include <asm/mach-bcm47xx/nvram.h>
 +
 +#define NVRAM_FLASH_SIZE 0x10000
++#define CFGFS_FLASH_SIZE (64 * 1024)
 +
 +static struct mtd_partition bcm47xx_partitions[] = {
++#define SLOT_CFE 0
 +	{
 +		.name       = "cfe",
 +		.offset     = 0,
 +		.size       = 0x40000,		/* 256k */
 +		.mask_flags = MTD_WRITEABLE	/* force read-only */
 +	},
++#define SLOT_LINUX 1
 +	{
 +		.name   = "linux",
 +		.offset = 0,
 +		.size   = 0,
 +	},
++#define SLOT_ROOTFS 2
++	{
++		.name   = "rootfs",
++		.offset = 0,
++		.size   = 0,
++	},
++#define SLOT_CFGFS 3
++	{
++		.name   = "cfgfs",
++		.offset = 0,
++		.size   = 0,
++	},
++#define SLOT_NVRAM 4
 +	{
 +		.name   = "nvram",
 +		.offset = 0,
@@ -69,18 +84,67 @@ diff -Nur linux-2.6.36.orig/arch/mips/bcm47xx/platform.c linux-2.6.36/arch/mips/
 +	&bcm47xx_flash,
 +};
 +
++struct bcm47xx_trx_header {
++#define BCM47XX_TRX_MAGIC 0x30524448
++	u32 magic;
++	u32 len;
++	u32 crc32;
++	u32 flag_version;
++	u32 offsets[3];
++};
++
++#define UPTODOWN(slot, psize) do {			\
++	posn -= psize; left -= psize;			\
++	bcm47xx_partitions[slot].offset = posn;		\
++	bcm47xx_partitions[slot].size = psize;		\
++} while (/* CONSTCOND */ 0)
++
 +static int __init bcm47xx_register_devices(void)
 +{
 +	u32 flash_size;
++	size_t left, posn;
 +	struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
++	struct bcm47xx_trx_header *trx_hdr;
++
++	trx_hdr = (void *)KSEG1ADDR(mcore->flash_window + 0x40000);
 +
 +	/* devices might have 2, 4 or 8 MB flash size */
++#ifdef BCM47XX_OVERRIDE_FLASHSIZE
++	flash_size = BCM47XX_OVERRIDE_FLASHSIZE;
++	mcore->flash_window_size = flash_size;
++#define BCM47XX_OVERRODE_FLASHSIZE " (overridden)"
++#else
 +	flash_size = mcore->flash_window_size;
-+	printk(KERN_INFO "FLASH SIZE: %x\n", flash_size);
-+	bcm47xx_partitions[1].offset = 0x40000;
-+	bcm47xx_partitions[1].size = flash_size - NVRAM_FLASH_SIZE - 0x40000;
-+	bcm47xx_partitions[2].offset = flash_size - NVRAM_FLASH_SIZE;
-+	bcm47xx_partitions[2].size = NVRAM_FLASH_SIZE;
++#define BCM47XX_OVERRODE_FLASHSIZE ""
++#endif
++	printk(KERN_INFO "FLASH SIZE%s: %x\n", BCM47XX_OVERRODE_FLASHSIZE,
++	    flash_size);
++
++	left = flash_size - 0x40000;
++	posn = flash_size;
++	UPTODOWN(SLOT_NVRAM, NVRAM_FLASH_SIZE);
++	UPTODOWN(SLOT_CFGFS, CFGFS_FLASH_SIZE);
++	bcm47xx_partitions[SLOT_LINUX].offset = 0x40000;
++	bcm47xx_partitions[SLOT_LINUX].size = left;
++
++	if (trx_hdr->magic == BCM47XX_TRX_MAGIC) {
++		bcm47xx_partitions[SLOT_ROOTFS].offset =
++		    bcm47xx_partitions[SLOT_LINUX].offset +
++		    trx_hdr->offsets[1];
++		bcm47xx_partitions[SLOT_ROOTFS].size =
++		    bcm47xx_partitions[SLOT_LINUX].size -
++		    trx_hdr->offsets[1];
++	} else
++		printk("bcm47xx/platform: no TRX header found\n");
++
++	printk(KERN_INFO "=== Flash map dump ===\n");
++	for (posn = 0; posn < bcm47xx_flash_data.nr_parts; ++posn)
++		printk(KERN_INFO " #%u %08X @%08X '%s'\n",
++		    (unsigned int)posn,
++		    (unsigned int)bcm47xx_partitions[posn].size,
++		    (unsigned int)bcm47xx_partitions[posn].offset,
++		    bcm47xx_partitions[posn].name);
++	printk(KERN_INFO "=== Hope this works, have a nice day\n");
 +
 +	bcm47xx_flash_data.width = mcore->flash_buswidth;
 +	bcm47xx_flash_resource.start = mcore->flash_window;
@@ -92,7 +156,6 @@ diff -Nur linux-2.6.36.orig/arch/mips/bcm47xx/platform.c linux-2.6.36/arch/mips/
 +}
 +
 +device_initcall(bcm47xx_register_devices);
-diff -Nur linux-2.6.36.orig/drivers/ssb/driver_mipscore.c linux-2.6.36/drivers/ssb/driver_mipscore.c
 --- linux-2.6.36.orig/drivers/ssb/driver_mipscore.c	2010-10-20 22:30:22.000000000 +0200
 +++ linux-2.6.36/drivers/ssb/driver_mipscore.c	2010-12-22 16:38:53.000000000 +0100
 @@ -193,7 +193,7 @@