bcm53xx: add initial support for ARM based BCM47XX and BCM53XX SoCs

This was only tested on a Netgear R6250, but it could also work on
other devices when the correct images are generated.
It is only possible to boot into a ram disk, no Ethernet, Wifi, flash,
USB is supported.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 37268

1 files changed, 83 insertions, 0 deletions

diff --git a/target/linux/bcm53xx/patches-3.10/0015-bcma-fix-handling-of-big-addrl.patch b/target/linux/bcm53xx/patches-3.10/0015-bcma-fix-handling-of-big-addrl.patch
new file mode 100644
index 0000000000..6a76f5d716
--- /dev/null
+++ b/target/linux/bcm53xx/patches-3.10/0015-bcma-fix-handling-of-big-addrl.patch
@@ -0,0 +1,83 @@
+From 8204277ed0f4aeb7bb38d0d5f39d9ebcced92576 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Fri, 5 Jul 2013 00:24:38 +0200
+Subject: [PATCH 15/17] bcma: fix handling of big addrl
+
+The return value of bcma_erom_get_addr_desc() is a unsigned value and it
+could wrap around in the two complement writing.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/bcma/scan.c |   16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+--- a/drivers/bcma/scan.c
++++ b/drivers/bcma/scan.c
+@@ -213,7 +213,7 @@ static s32 bcma_erom_get_mst_port(struct
+ 	return ent;
+ }
+ 
+-static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 __iomem **eromptr,
++static u32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 __iomem **eromptr,
+ 				  u32 type, u8 port)
+ {
+ 	u32 addrl, addrh, sizel, sizeh = 0;
+@@ -225,7 +225,7 @@ static s32 bcma_erom_get_addr_desc(struc
+ 	    ((ent & SCAN_ADDR_TYPE) != type) ||
+ 	    (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) {
+ 		bcma_erom_push_ent(eromptr);
+-		return -EINVAL;
++		return (u32)-EINVAL;
+ 	}
+ 
+ 	addrl = ent & SCAN_ADDR_ADDR;
+@@ -273,7 +273,7 @@ static int bcma_get_next_core(struct bcm
+ 			      struct bcma_device_id *match, int core_num,
+ 			      struct bcma_device *core)
+ {
+-	s32 tmp;
++	u32 tmp;
+ 	u8 i, j;
+ 	s32 cia, cib;
+ 	u8 ports[2], wrappers[2];
+@@ -351,11 +351,11 @@ static int bcma_get_next_core(struct bcm
+ 	 * the main register space for the core
+ 	 */
+ 	tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
+-	if (tmp <= 0) {
++	if (tmp == 0 || IS_ERR_VALUE(tmp)) {
+ 		/* Try again to see if it is a bridge */
+ 		tmp = bcma_erom_get_addr_desc(bus, eromptr,
+ 					      SCAN_ADDR_TYPE_BRIDGE, 0);
+-		if (tmp <= 0) {
++		if (tmp == 0 || IS_ERR_VALUE(tmp)) {
+ 			return -EILSEQ;
+ 		} else {
+ 			bcma_info(bus, "Bridge found\n");
+@@ -369,7 +369,7 @@ static int bcma_get_next_core(struct bcm
+ 		for (j = 0; ; j++) {
+ 			tmp = bcma_erom_get_addr_desc(bus, eromptr,
+ 				SCAN_ADDR_TYPE_SLAVE, i);
+-			if (tmp < 0) {
++			if (IS_ERR_VALUE(tmp)) {
+ 				/* no more entries for port _i_ */
+ 				/* pr_debug("erom: slave port %d "
+ 				 * "has %d descriptors\n", i, j); */
+@@ -386,7 +386,7 @@ static int bcma_get_next_core(struct bcm
+ 		for (j = 0; ; j++) {
+ 			tmp = bcma_erom_get_addr_desc(bus, eromptr,
+ 				SCAN_ADDR_TYPE_MWRAP, i);
+-			if (tmp < 0) {
++			if (IS_ERR_VALUE(tmp)) {
+ 				/* no more entries for port _i_ */
+ 				/* pr_debug("erom: master wrapper %d "
+ 				 * "has %d descriptors\n", i, j); */
+@@ -404,7 +404,7 @@ static int bcma_get_next_core(struct bcm
+ 		for (j = 0; ; j++) {
+ 			tmp = bcma_erom_get_addr_desc(bus, eromptr,
+ 				SCAN_ADDR_TYPE_SWRAP, i + hack);
+-			if (tmp < 0) {
++			if (IS_ERR_VALUE(tmp)) {
+ 				/* no more entries for port _i_ */
+ 				/* pr_debug("erom: master wrapper %d "
+ 				 * has %d descriptors\n", i, j); */