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/*
* Copyright 2004-2008 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_MXC_MEMORY_H__
#define __ASM_ARCH_MXC_MEMORY_H__
#include <asm/page.h>
#include <asm/sizes.h>
/* Start of physical RAM */
#if defined(CONFIG_MACH_MXC30031ADS) || defined(CONFIG_MACH_MX35EVB)
#define PHYS_OFFSET UL(0x90000000)
#endif
#ifdef CONFIG_MACH_MX27ADS
#define PHYS_OFFSET UL(0xA0000000)
#endif
#ifdef CONFIG_MACH_MX37_3DS
#define PHYS_OFFSET UL(0x40000000)
#endif
#ifndef PHYS_OFFSET
#define PHYS_OFFSET UL(0x80000000)
#endif
/* Size of contiguous memory for DMA and other h/w blocks */
#define CONSISTENT_DMA_SIZE (14 * SZ_1M)
/*!
* @defgroup Memory_MX27 Memory Map
* @ingroup MSL_MX27
*/
/*!
* @defgroup Memory_MX31 Memory Map
* @ingroup MSL_MX31
*/
/*!
* @defgroup Memory_MXC91321 Memory Map
* @ingroup MSL_MXC91321
*/
/*!
* @file arch-mxc/memory.h
* @brief This file contains macros needed by the Linux kernel and drivers.
*
* @ingroup Memory_MX27 Memory_MX31 Memory_MXC91321
*/
#ifndef __ASSEMBLY__
#ifdef CONFIG_DMA_ZONE_SIZE
#define MXC_DMA_ZONE_SIZE ((CONFIG_DMA_ZONE_SIZE * SZ_1M) >> PAGE_SHIFT)
#else
#define MXC_DMA_ZONE_SIZE ((12 * SZ_1M) >> PAGE_SHIFT)
#endif
static inline void __arch_adjust_zones(int node, unsigned long *zone_size,
unsigned long *zhole_size)
{
if (node != 0)
return;
/* Create separate zone to reserve memory for DMA */
zone_size[1] = zone_size[0] - MXC_DMA_ZONE_SIZE;
zone_size[0] = MXC_DMA_ZONE_SIZE;
zhole_size[1] = zhole_size[0];
zhole_size[0] = 0;
}
#define arch_adjust_zones(node, size, holes) \
__arch_adjust_zones(node, size, holes)
#endif
/*!
* Virtual view <-> DMA view memory address translations
* This macro is used to translate the virtual address to an address
* suitable to be passed to set_dma_addr()
*/
#define __virt_to_bus(a) __virt_to_phys(a)
/*!
* Used to convert an address for DMA operations to an address that the
* kernel can use.
*/
#define __bus_to_virt(a) __phys_to_virt(a)
#endif /* __ASM_ARCH_MXC_MEMORY_H__ */
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