brcm47xx: add initial support for kernel 3.8

This contains the following new bigger changes:
 * new partition parser which still could lake some features or have bugs
 * new nand flash driver
 * using physmap-flash flash driver for parallel flash
 * some changes to the serial flash driver

With these changes OpenWrt starts using more of the mainline flash drivers.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35632 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 41 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.8/021-mtd-bcm47xxpart-register-extra-firmware-partition.patch b/target/linux/brcm47xx/patches-3.8/021-mtd-bcm47xxpart-register-extra-firmware-partition.patch
new file mode 100644
index 0000000000..c5399f24c4
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.8/021-mtd-bcm47xxpart-register-extra-firmware-partition.patch
@@ -0,0 +1,41 @@
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -61,6 +61,8 @@ static int bcm47xxpart_parse(struct mtd_
+ 	uint32_t offset;
+ 	uint32_t blocksize = 0x10000;
+ 	struct trx_header *trx;
++	int trx_part = -1;
++	int last_trx_part = -1;
+ 
+ 	/* Alloc */
+ 	parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS,
+@@ -131,6 +133,10 @@ static int bcm47xxpart_parse(struct mtd_
+ 		if (buf[0x000 / 4] == TRX_MAGIC) {
+ 			trx = (struct trx_header *)buf;
+ 
++			trx_part = curr_part;
++			bcm47xxpart_add_part(&parts[curr_part++], "firmware",
++					     offset, 0);
++
+ 			i = 0;
+ 			/* We have LZMA loader if offset[2] points to sth */
+ 			if (trx->offset[2]) {
+@@ -154,6 +160,8 @@ static int bcm47xxpart_parse(struct mtd_
+ 					     offset + trx->offset[i], 0);
+ 			i++;
+ 
++			last_trx_part = curr_part - 1;
++
+ 			/*
+ 			 * We have whole TRX scanned, skip to the next part. Use
+ 			 * roundown (not roundup), as the loop will increase
+@@ -174,6 +182,9 @@ static int bcm47xxpart_parse(struct mtd_
+ 				       parts[i + 1].offset : master->size;
+ 
+ 		parts[i].size = next_part_offset - parts[i].offset;
++		if (i == last_trx_part && trx_part >= 0)
++			parts[trx_part].size = next_part_offset -
++					       parts[trx_part].offset;
+ 	}
+ 
+ 	*pparts = parts;