1/* arch/arm/mach-s3c2410/include/mach/debug-macro.S 2 * 3 * Debugging macro include header 4 * 5 * Copyright (C) 1994-1999 Russell King 6 * Copyright (C) 2005 Simtec Electronics 7 * 8 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13*/ 14 15#include <mach/map.h> 16#include <mach/regs-gpio.h> 17#include <plat/regs-serial.h> 18 19#define S3C2410_UART1_OFF (0x4000) 20#define SHIFT_2440TXF (14-9) 21 22 .macro addruart, rp, rv, tmp 23 ldr \rp, = S3C24XX_PA_UART 24 ldr \rv, = S3C24XX_VA_UART 25#if CONFIG_DEBUG_S3C_UART != 0 26 add \rp, \rp, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART) 27 add \rv, \rv, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART) 28#endif 29 .endm 30 31 .macro fifo_full_s3c24xx rd, rx 32 @ check for arm920 vs arm926. currently assume all arm926 33 @ devices have an 64 byte FIFO identical to the s3c2440 34 mrc p15, 0, \rd, c0, c0 35 and \rd, \rd, #0xff0 36 teq \rd, #0x260 37 beq 1004f 38 mrc p15, 0, \rd, c1, c0 39 tst \rd, #1 40 addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART) 41 addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART) 42 bic \rd, \rd, #0xff000 43 ldr \rd, [\rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0)] 44 and \rd, \rd, #0x00ff0000 45 teq \rd, #0x00440000 @ is it 2440? 461004: 47 ldr \rd, [\rx, # S3C2410_UFSTAT] 48 moveq \rd, \rd, lsr #SHIFT_2440TXF 49 tst \rd, #S3C2410_UFSTAT_TXFULL 50 .endm 51 52 .macro fifo_full_s3c2410 rd, rx 53 ldr \rd, [\rx, # S3C2410_UFSTAT] 54 tst \rd, #S3C2410_UFSTAT_TXFULL 55 .endm 56 57/* fifo level reading */ 58 59 .macro fifo_level_s3c24xx rd, rx 60 @ check for arm920 vs arm926. currently assume all arm926 61 @ devices have an 64 byte FIFO identical to the s3c2440 62 mrc p15, 0, \rd, c0, c0 63 and \rd, \rd, #0xff0 64 teq \rd, #0x260 65 beq 10000f 66 mrc p15, 0, \rd, c1, c0 67 tst \rd, #1 68 addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART) 69 addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART) 70 bic \rd, \rd, #0xff000 71 ldr \rd, [\rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0)] 72 and \rd, \rd, #0x00ff0000 73 teq \rd, #0x00440000 @ is it 2440? 74 7510000: 76 ldr \rd, [\rx, # S3C2410_UFSTAT] 77 andne \rd, \rd, #S3C2410_UFSTAT_TXMASK 78 andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK 79 .endm 80 81 .macro fifo_level_s3c2410 rd, rx 82 ldr \rd, [\rx, # S3C2410_UFSTAT] 83 and \rd, \rd, #S3C2410_UFSTAT_TXMASK 84 .endm 85 86/* Select the correct implementation depending on the configuration. The 87 * S3C2440 will get selected by default, as these are the most widely 88 * used variants of these 89*/ 90 91#if defined(CONFIG_CPU_LLSERIAL_S3C2410_ONLY) 92#define fifo_full fifo_full_s3c2410 93#define fifo_level fifo_level_s3c2410 94#elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY) 95#define fifo_full fifo_full_s3c24xx 96#define fifo_level fifo_level_s3c24xx 97#endif 98 99/* include the reset of the code which will do the work */ 100 101#include <debug/samsung.S> 102