From 68d5969378fc21d9f70c0fdbc25176a68d873922 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sun, 18 Jun 2006 16:21:52 +0100 Subject: [PATCH] [ARM] 3552/1: S3C24XX: Move VA of GPIO for low-level debug Patch from Ben Dooks Using the low-level debug routines early in the kernel debug cause the 1:1 mapping to get into the TLB, which is not flushed until after the CPU detection process (which needs the GPIO VA). This patch moves the VA for the GPIO to the same offset as the physical offset of the UART to the GPIO. Signed-off-by: Ben Dooks Signed-off-by: Russell King --- include/asm-arm/arch-s3c2410/map.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/include/asm-arm/arch-s3c2410/map.h b/include/asm-arm/arch-s3c2410/map.h index c380d264a8..5e4c8c37bc 100644 --- a/include/asm-arm/arch-s3c2410/map.h +++ b/include/asm-arm/arch-s3c2410/map.h @@ -126,9 +126,18 @@ #define S3C24XX_SZ_IIS SZ_1M /* GPIO ports */ -#define S3C24XX_VA_GPIO S3C2410_ADDR(0x00E00000) + +/* the calculation for the VA of this must ensure that + * it is the same distance apart from the UART in the + * phsyical address space, as the initial mapping for the IO + * is done as a 1:1 maping. This puts it (currently) at + * 0xF6800000, which is not in the way of any current mapping + * by the base system. +*/ + #define S3C2400_PA_GPIO (0x15600000) #define S3C2410_PA_GPIO (0x56000000) +#define S3C24XX_VA_GPIO ((S3C2410_PA_GPIO - S3C24XX_PA_UART) + S3C24XX_VA_UART) #define S3C24XX_SZ_GPIO SZ_1M /* RTC */ -- 2.39.5