2 * DaVinci memory space definitions
4 * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
6 * 2007 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
11 #ifndef __ASM_ARCH_MEMORY_H
12 #define __ASM_ARCH_MEMORY_H
14 /**************************************************************************
16 **************************************************************************/
18 #include <asm/sizes.h>
20 /**************************************************************************
22 **************************************************************************/
23 #define DAVINCI_DDR_BASE 0x80000000
24 #define DA8XX_DDR_BASE 0xc0000000
26 #if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
27 #error Cannot enable DaVinci and DA8XX platforms concurrently
28 #elif defined(CONFIG_ARCH_DAVINCI_DA8XX)
29 #define PLAT_PHYS_OFFSET DA8XX_DDR_BASE
31 #define PLAT_PHYS_OFFSET DAVINCI_DDR_BASE
34 #define DDR2_SDRCR_OFFSET 0xc
35 #define DDR2_SRPD_BIT BIT(23)
36 #define DDR2_MCLKSTOPEN_BIT BIT(30)
37 #define DDR2_LPMODEN_BIT BIT(31)
40 * Increase size of DMA-consistent memory region
42 #define CONSISTENT_DMA_SIZE (14<<20)
46 * Restrict DMA-able region to workaround silicon bug. The bug
47 * restricts buffers available for DMA to video hardware to be
51 __arch_adjust_zones(unsigned long *size, unsigned long *holes)
53 unsigned int sz = (128<<20) >> PAGE_SHIFT;
55 size[1] = size[0] - sz;
59 #define arch_adjust_zones(zone_size, holes) \
60 if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(zone_size, holes)
62 #define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1)
63 #define MAX_DMA_ADDRESS (PAGE_OFFSET + (128<<20))
67 #endif /* __ASM_ARCH_MEMORY_H */