[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 <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 5 insertions, 2 deletions

diff --git a/include/asm-arm/arch-at91rm9200/hardware.h b/include/asm-arm/arch-at91rm9200/hardware.h
index 59e6f44d3a0d..87f40df57140 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 34d9718feb90..4c367eb57f47 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