From 10e8e1fb758eed5cfb0cae1b770f842624851e7b Mon Sep 17 00:00:00 2001 From: Andrew Victor Date: Mon, 19 Jun 2006 15:26:51 +0100 Subject: [PATCH] [ARM] 3581/1: AT91RM9200 Internal SRAM Patch from Andrew Victor This patch maps the AT91RM9200's internal SRAM into the virtual memory address space - just below the internal peripheral registers. Signed-off-by: Andrew Victor Signed-off-by: Russell King --- arch/arm/mach-at91rm9200/common.c | 6 ++++++ include/asm-arm/arch-at91rm9200/hardware.h | 5 ++++- include/asm-arm/arch-at91rm9200/vmalloc.h | 2 +- 3 files changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-at91rm9200/common.c b/arch/arm/mach-at91rm9200/common.c index 3848fd2..40d29a73 100644 --- a/arch/arm/mach-at91rm9200/common.c +++ b/arch/arm/mach-at91rm9200/common.c @@ -17,6 +17,7 @@ #include #include +#include "generic.h" static struct map_desc at91rm9200_io_desc[] __initdata = { { @@ -94,6 +95,11 @@ static struct map_desc at91rm9200_io_desc[] __initdata = { .pfn = __phys_to_pfn(AT91_BASE_TCB0), .length = SZ_16K, .type = MT_DEVICE, + }, { + .virtual = AT91_SRAM_VIRT_BASE, + .pfn = __phys_to_pfn(AT91_SRAM_BASE), + .length = AT91_SRAM_SIZE, + .type = MT_DEVICE, }, }; diff --git a/include/asm-arm/arch-at91rm9200/hardware.h b/include/asm-arm/arch-at91rm9200/hardware.h index 59e6f44..87f40df 100644 --- a/include/asm-arm/arch-at91rm9200/hardware.h +++ b/include/asm-arm/arch-at91rm9200/hardware.h @@ -50,9 +50,12 @@ #define AT91_VA_BASE_TCB0 AT91_IO_P2V(AT91_BASE_TCB0) /* Internal SRAM */ -#define AT91_BASE_SRAM 0x00200000 /* Internal SRAM base address */ +#define AT91_SRAM_BASE 0x00200000 /* Internal SRAM base address */ #define AT91_SRAM_SIZE 0x00004000 /* Internal SRAM SIZE (16Kb) */ + /* Internal SRAM is mapped below the IO devices */ +#define AT91_SRAM_VIRT_BASE (AT91_IO_VIRT_BASE - AT91_SRAM_SIZE) + /* Serial ports */ #define AT91_NR_UART 5 /* 4 USART3's and one DBGU port */ diff --git a/include/asm-arm/arch-at91rm9200/vmalloc.h b/include/asm-arm/arch-at91rm9200/vmalloc.h index 34d9718..4c367eb 100644 --- a/include/asm-arm/arch-at91rm9200/vmalloc.h +++ b/include/asm-arm/arch-at91rm9200/vmalloc.h @@ -21,6 +21,6 @@ #ifndef __ASM_ARCH_VMALLOC_H #define __ASM_ARCH_VMALLOC_H -#define VMALLOC_END (AT91_IO_VIRT_BASE & PGDIR_MASK) +#define VMALLOC_END (AT91_SRAM_VIRT_BASE & PGDIR_MASK) #endif -- 2.7.4