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[ARM] 4428/1: modify at91 includes to handle non-MMU at91x40 family

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Modify the common at91 hardware support to deal with the non-MMU
at91x40 family. The base RAM (which is most likely not DRAM) is
set to the configured value. Virtual IO device mapping is set
to be 1 to 1 with the physical addresses.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Greg Ungerer
2007-06-04 06:46:26 +01:00
committed by Russell King
parent 7067222400
commit feb4722552
1 changed files with 16 additions and 1 deletions
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17
include/asm-arm/arch-at91/hardware.h
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@@ -26,18 +26,29 @@
#include <asm/arch/at91sam9263.h> #include <asm/arch/at91sam9263.h>
#elif defined(CONFIG_ARCH_AT91SAM9RL) #elif defined(CONFIG_ARCH_AT91SAM9RL)
#include <asm/arch/at91sam9rl.h> #include <asm/arch/at91sam9rl.h>
#elif defined(CONFIG_ARCH_AT91X40)
#include <asm/arch/at91x40.h>
#else #else
#error "Unsupported AT91 processor" #error "Unsupported AT91 processor"
#endif #endif
#ifdef CONFIG_MMU
/* /*
* Remap the peripherals from address 0xFFF78000 .. 0xFFFFFFFF * Remap the peripherals from address 0xFFF78000 .. 0xFFFFFFFF
* to 0xFEF78000 .. 0xFF000000. (544Kb) * to 0xFEF78000 .. 0xFF000000. (544Kb)
*/ */
#define AT91_IO_PHYS_BASE 0xFFF78000 #define AT91_IO_PHYS_BASE 0xFFF78000
#define AT91_IO_SIZE (0xFFFFFFFF - AT91_IO_PHYS_BASE + 1)
#define AT91_IO_VIRT_BASE (0xFF000000 - AT91_IO_SIZE) #define AT91_IO_VIRT_BASE (0xFF000000 - AT91_IO_SIZE)
#else
/*
* Identity mapping for the non MMU case.
*/
#define AT91_IO_PHYS_BASE AT91_BASE_SYS
#define AT91_IO_VIRT_BASE AT91_IO_PHYS_BASE
#endif
#define AT91_IO_SIZE (0xFFFFFFFF - AT91_IO_PHYS_BASE + 1)
/* Convert a physical IO address to virtual IO address */ /* Convert a physical IO address to virtual IO address */
#define AT91_IO_P2V(x) ((x) - AT91_IO_PHYS_BASE + AT91_IO_VIRT_BASE) #define AT91_IO_P2V(x) ((x) - AT91_IO_PHYS_BASE + AT91_IO_VIRT_BASE)
@@ -66,7 +77,11 @@
#define AT91_CHIPSELECT_7 0x80000000 #define AT91_CHIPSELECT_7 0x80000000
/* SDRAM */ /* SDRAM */
#ifdef CONFIG_DRAM_BASE
#define AT91_SDRAM_BASE CONFIG_DRAM_BASE
#else
#define AT91_SDRAM_BASE AT91_CHIPSELECT_1 #define AT91_SDRAM_BASE AT91_CHIPSELECT_1
#endif
/* Clocks */ /* Clocks */
#define AT91_SLOW_CLOCK 32768 /* slow clock */ #define AT91_SLOW_CLOCK 32768 /* slow clock */