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 DAVINCI_IRAM_BASE 0x00008000 /* ARM Internal RAM */
26 #define PHYS_OFFSET DAVINCI_DDR_BASE
29 * Increase size of DMA-consistent memory region
31 #define CONSISTENT_DMA_SIZE (14<<20)
35 * Restrict DMA-able region to workaround silicon bug. The bug
36 * restricts buffers available for DMA to video hardware to be
40 __arch_adjust_zones(int node
, unsigned long *size
, unsigned long *holes
)
42 unsigned int sz
= (128<<20) >> PAGE_SHIFT
;
47 size
[1] = size
[0] - sz
;
51 #define arch_adjust_zones(node, zone_size, holes) \
52 if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes)
54 #define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1)
55 #define MAX_DMA_ADDRESS (PAGE_OFFSET + (128<<20))
59 #endif /* __ASM_ARCH_MEMORY_H */