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authorBen Dooks <ben-linux@fluff.org>2006-06-18 16:21:52 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-06-18 16:21:52 +0100
commit68d5969378fc21d9f70c0fdbc25176a68d873922 (patch)
tree117635d7e73759a97bd34966320941c7f7b801a1 /include
parent4833acb2e19f669ce87c439a7d91ead600d8a7c9 (diff)
downloadlinux-2.6.34-ux500-68d5969378fc21d9f70c0fdbc25176a68d873922.tar.gz
[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 <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/asm-arm/arch-s3c2410/map.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/asm-arm/arch-s3c2410/map.h b/include/asm-arm/arch-s3c2410/map.h
index c380d264a84..5e4c8c37bc6 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 */