| /* |
| * DaVinci memory space definitions |
| * |
| * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com> |
| * |
| * 2007 (c) MontaVista Software, Inc. This file is licensed under |
| * the terms of the GNU General Public License version 2. This program |
| * is licensed "as is" without any warranty of any kind, whether express |
| * or implied. |
| */ |
| #ifndef __ASM_ARCH_MEMORY_H |
| #define __ASM_ARCH_MEMORY_H |
| |
| /************************************************************************** |
| * Included Files |
| **************************************************************************/ |
| #include <asm/page.h> |
| #include <asm/sizes.h> |
| |
| /************************************************************************** |
| * Definitions |
| **************************************************************************/ |
| #define DAVINCI_DDR_BASE 0x80000000 |
| #define DA8XX_DDR_BASE 0xc0000000 |
| |
| #if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx) |
| #error Cannot enable DaVinci and DA8XX platforms concurrently |
| #elif defined(CONFIG_ARCH_DAVINCI_DA8XX) |
| #define PHYS_OFFSET DA8XX_DDR_BASE |
| #else |
| #define PHYS_OFFSET DAVINCI_DDR_BASE |
| #endif |
| |
| #define DDR2_SDRCR_OFFSET 0xc |
| #define DDR2_SRPD_BIT BIT(23) |
| #define DDR2_MCLKSTOPEN_BIT BIT(30) |
| #define DDR2_LPMODEN_BIT BIT(31) |
| |
| /* |
| * Increase size of DMA-consistent memory region |
| */ |
| #define CONSISTENT_DMA_SIZE (14<<20) |
| |
| #ifndef __ASSEMBLY__ |
| /* |
| * Restrict DMA-able region to workaround silicon bug. The bug |
| * restricts buffers available for DMA to video hardware to be |
| * below 128M |
| */ |
| static inline void |
| __arch_adjust_zones(int node, unsigned long *size, unsigned long *holes) |
| { |
| unsigned int sz = (128<<20) >> PAGE_SHIFT; |
| |
| if (node != 0) |
| sz = 0; |
| |
| size[1] = size[0] - sz; |
| size[0] = sz; |
| } |
| |
| #define arch_adjust_zones(node, zone_size, holes) \ |
| if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes) |
| |
| #define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1) |
| #define MAX_DMA_ADDRESS (PAGE_OFFSET + (128<<20)) |
| |
| #endif |
| |
| #endif /* __ASM_ARCH_MEMORY_H */ |
