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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2008-10-15 09:50:23 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2008-10-30 15:56:14 +0100 |
| commit | eadefeff9c5572d82c2f5d907a0bfb3ba55ce901 (patch) | |
| tree | 430359c3e4c25be1c6df3997e6be7565701db667 | |
| parent | 6c1249e588cbf0484fc3e6b0f0fc4a5892749b4d (diff) | |
| download | op-kernel-dev-eadefeff9c5572d82c2f5d907a0bfb3ba55ce901.zip op-kernel-dev-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>
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/io.h | 20 |
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 65b6810..5d4cb11 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)) |
