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authorSascha Hauer <s.hauer@pengutronix.de>2008-10-15 09:50:23 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2008-10-30 15:56:14 +0100
commiteadefeff9c5572d82c2f5d907a0bfb3ba55ce901 (patch)
tree430359c3e4c25be1c6df3997e6be7565701db667 /arch
parent6c1249e588cbf0484fc3e6b0f0fc4a5892749b4d (diff)
downloadlinux-linaro-stable-eadefeff9c5572d82c2f5d907a0bfb3ba55ce901.tar.gz
[ARM] MX3: Use ioremap wrapper to map SoC devices nonshared
The internal devices of the MX3 Processor have to be mapped MT_DEVICE_NONSHARED devices, otherwise cache corruptions occur. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/plat-mxc/include/mach/io.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/include/mach/io.h b/arch/arm/plat-mxc/include/mach/io.h
index 65b6810124c1..5d4cb1196441 100644
--- a/arch/arm/plat-mxc/include/mach/io.h
+++ b/arch/arm/plat-mxc/include/mach/io.h
@@ -14,6 +14,26 @@
/* Allow IO space to be anywhere in the memory */
#define IO_SPACE_LIMIT 0xffffffff
+#ifdef CONFIG_ARCH_MX3
+#define __arch_ioremap __mx3_ioremap
+#define __arch_iounmap __iounmap
+
+static inline void __iomem *
+__mx3_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
+{
+ if (mtype == MT_DEVICE) {
+ /* Access all peripherals below 0x80000000 as nonshared device
+ * but leave l2cc alone.
+ */
+ if ((phys_addr < 0x80000000) && ((phys_addr < L2CC_BASE_ADDR) ||
+ (phys_addr >= L2CC_BASE_ADDR + L2CC_SIZE)))
+ mtype = MT_DEVICE_NONSHARED;
+ }
+
+ return __arm_ioremap(phys_addr, size, mtype);
+}
+#endif
+
/* io address mapping macro */
#define __io(a) ((void __iomem *)(a))