mirror of https://gitee.com/openkylin/linux.git
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* Copyright (c) 2010-2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* EXYNOS - uncompress code
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_UNCOMPRESS_H
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#define __ASM_ARCH_UNCOMPRESS_H __FILE__
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#include <asm/mach-types.h>
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#include <mach/map.h>
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volatile u8 *uart_base;
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#include <plat/uncompress.h>
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static unsigned int __raw_readl(unsigned int ptr)
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{
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return *((volatile unsigned int *)ptr);
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}
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static void arch_detect_cpu(void)
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{
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u32 chip_id = __raw_readl(EXYNOS_PA_CHIPID);
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/*
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* product_id is bits 31:12
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* bits 23:20 describe the exynosX family
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*
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*/
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chip_id >>= 20;
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chip_id &= 0xf;
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if (chip_id == 0x5)
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uart_base = (volatile u8 *)EXYNOS5_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
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else
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uart_base = (volatile u8 *)EXYNOS4_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
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/*
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* For preventing FIFO overrun or infinite loop of UART console,
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* fifo_max should be the minimum fifo size of all of the UART channels
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*/
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fifo_mask = S5PV210_UFSTAT_TXMASK;
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fifo_max = 15 << S5PV210_UFSTAT_TXSHIFT;
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}
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#endif /* __ASM_ARCH_UNCOMPRESS_H */
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