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-rw-r--r--arch/arm/mach-exynos/include/mach/uncompress.h32
1 files changed, 27 insertions, 5 deletions
diff --git a/arch/arm/mach-exynos/include/mach/uncompress.h b/arch/arm/mach-exynos/include/mach/uncompress.h
index 21d97bc..2979995 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 +12,35 @@
#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 unsigned int __raw_readl(unsigned int ptr)
+{
+ return *((volatile unsigned int *)ptr);
+}
+
static void arch_detect_cpu(void)
{
- /* we do not need to do any cpu detection here at the moment. */
+ u32 chip_id = __raw_readl(EXYNOS_PA_CHIPID);
+
+ /*
+ * product_id is bits 31:12
+ * bits 23:20 describe the exynosX family
+ *
+ */
+ chip_id >>= 20;
+ chip_id &= 0xf;
+
+ if (chip_id == 0x5)
+ 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,