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Commit eadefeff authored by Sascha Hauer's avatar Sascha Hauer
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[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: default avatarGuennadi Liakhovetski <lg@denx.de>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 6c1249e5

arch/arm/plat-mxc/include/mach/io.h

+20 −0
Original line number Original line Diff line number Diff line
@@ -14,6 +14,26 @@ 
/* Allow IO space to be anywhere in the memory */

/* Allow IO space to be anywhere in the memory */

#define IO_SPACE_LIMIT 0xffffffff

#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 */

/* io address mapping macro */

#define __io(a)			((void __iomem *)(a))

#define __io(a)			((void __iomem *)(a))