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 19 volatile u8 *uart_base; 20 21 #include <plat/uncompress.h> 22 __raw_readl(unsigned int ptr)23static unsigned int __raw_readl(unsigned int ptr) 24 { 25 return *((volatile unsigned int *)ptr); 26 } 27 arch_detect_cpu(void)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