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fixes NO_XIP on CFI0001 flash

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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
This commit is contained in:
John Crispin 2013-03-12 13:53:08 +00:00
parent 7e1c5b0be8
commit 48a4b3a0cd
2 changed files with 19 additions and 0 deletions
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2
target/linux/lantiq/image/ARV4510PW.dts
View file

@ -28,6 +28,8 @@
#address-cells = <1>;
#size-cells = <1>;
lantiq,noxip;
partition@0 {
label = "uboot";
reg = <0x00000 0x20000>;

17
target/linux/lantiq/patches-3.7/0305-no_xip_nor.patch Normal file
View file

@ -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) {