ARM: EXYNOS: add support uart for EXYNOS4 and EXYNOS5

Actually, the base address of uart is different between EXYNOS4
and EXYNOS5 and this patch enables to support uart for EXYNOS4
and EXYNOS5 SoCs at runtime.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 12 insertions, 5 deletions

diff --git a/arch/arm/mach-exynos/include/mach/uncompress.h b/arch/arm/mach-exynos/include/mach/uncompress.h
index 21d97bcd9ac..493f4f365dd 100644
--- a/arch/arm/mach-exynos/include/mach/uncompress.h
+++ b/arch/arm/mach-exynos/include/mach/uncompress.h
@@ -1,9 +1,8 @@
-/* linux/arch/arm/mach-exynos4/include/mach/uncompress.h
- *
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+/*
+ * Copyright (c) 2010-2012 Samsung Electronics Co., Ltd.
  *              http://www.samsung.com
  *
- * EXYNOS4 - uncompress code
+ * EXYNOS - uncompress code
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -13,12 +12,20 @@
 #ifndef __ASM_ARCH_UNCOMPRESS_H
 #define __ASM_ARCH_UNCOMPRESS_H __FILE__
 
+#include <asm/mach-types.h>
+
 #include <mach/map.h>
+
+volatile u8 *uart_base;
+
 #include <plat/uncompress.h>
 
 static void arch_detect_cpu(void)
 {
-        /* we do not need to do any cpu detection here at the moment. */
+        if (machine_is_smdk5250())
+                uart_base = (volatile u8 *)EXYNOS5_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
+        else
+                uart_base = (volatile u8 *)EXYNOS4_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
 
         /*
          * For preventing FIFO overrun or infinite loop of UART console,