1/*
2 * Copyright (c) 2010-2012 Samsung Electronics Co., Ltd.
3 *		http://www.samsung.com
4 *
5 * EXYNOS - uncompress code
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10*/
11
12#ifndef __ASM_ARCH_UNCOMPRESS_H
13#define __ASM_ARCH_UNCOMPRESS_H __FILE__
14
15#include <asm/mach-types.h>
16
17#include <mach/map.h>
18
19volatile u8 *uart_base;
20
21#include <plat/uncompress.h>
22
23static unsigned int __raw_readl(unsigned int ptr)
24{
25	return *((volatile unsigned int *)ptr);
26}
27
28static void arch_detect_cpu(void)
29{
30	u32 chip_id = __raw_readl(EXYNOS_PA_CHIPID);
31
32	/*
33	 * product_id is bits 31:12
34	 *    bits 23:20 describe the exynosX family
35	 *
36	 */
37	chip_id >>= 20;
38	chip_id &= 0xf;
39
40	if (chip_id == 0x5)
41		uart_base = (volatile u8 *)EXYNOS5_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
42	else
43		uart_base = (volatile u8 *)EXYNOS4_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
44
45	/*
46	 * For preventing FIFO overrun or infinite loop of UART console,
47	 * fifo_max should be the minimum fifo size of all of the UART channels
48	 */
49	fifo_mask = S5PV210_UFSTAT_TXMASK;
50	fifo_max = 15 << S5PV210_UFSTAT_TXSHIFT;
51}
52#endif /* __ASM_ARCH_UNCOMPRESS_H */
53