From: John Crispin <john@openwrt.org>
Date: Tue, 12 Mar 2013 13:53:08 +0000 (+0000)
Subject: fixes NO_XIP on CFI0001 flash
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=48a4b3a0cdeae41563641965fc998f12a5549f47;p=librecmc%2Flibrecmc.git

fixes NO_XIP on CFI0001 flash

This patch disables the execute-in-place (XIP) support for flash on
lantiq. This has to be disabled since the bus which flash is connected
to does not support unaligned accesses. Resolves data bus errors on
Lantiq routers with Intel command set flash.

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>

SVN-Revision: 35992
---

diff --git a/target/linux/lantiq/image/ARV4510PW.dts b/target/linux/lantiq/image/ARV4510PW.dts
index f1d41da39f..e0cd38a460 100644
--- a/target/linux/lantiq/image/ARV4510PW.dts
+++ b/target/linux/lantiq/image/ARV4510PW.dts
@@ -28,6 +28,8 @@
 				#address-cells = <1>;
 				#size-cells = <1>;
 
+				lantiq,noxip;
+
 				partition@0 {
 					label = "uboot";
 					reg = <0x00000 0x20000>;
diff --git a/target/linux/lantiq/patches-3.7/0305-no_xip_nor.patch b/target/linux/lantiq/patches-3.7/0305-no_xip_nor.patch
new file mode 100644
index 0000000000..a154befded
--- /dev/null
+++ b/target/linux/lantiq/patches-3.7/0305-no_xip_nor.patch
@@ -0,0 +1,17 @@
+Index: linux-3.7.10/drivers/mtd/maps/lantiq-flash.c
+===================================================================
+--- linux-3.7.10.orig/drivers/mtd/maps/lantiq-flash.c	2013-02-27 18:22:04.000000000 +0100
++++ linux-3.7.10/drivers/mtd/maps/lantiq-flash.c	2013-03-12 10:10:22.954382685 +0100
+@@ -134,7 +134,11 @@
+ 	}
+ 
+ 	ltq_mtd->map = kzalloc(sizeof(struct map_info), GFP_KERNEL);
+-	ltq_mtd->map->phys = ltq_mtd->res->start;
++	if (of_find_property(pdev->dev.of_node, "lantiq,noxip", NULL))
++		ltq_mtd->map->phys = NO_XIP;
++	else
++		ltq_mtd->map->phys = ltq_mtd->res->start;
++	ltq_mtd->res->start;
+ 	ltq_mtd->map->size = resource_size(ltq_mtd->res);
+ 	ltq_mtd->map->virt = devm_request_and_ioremap(&pdev->dev, ltq_mtd->res);
+ 	if (!ltq_mtd->map->virt) {