/* linux/include/asm-arm/arch-s3c2410/debug-macro.S * * Debugging macro include header * * Copyright (C) 1994-1999 Russell King * Copyright (C) 2005 Simtec Electronics * * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks * * 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 * published by the Free Software Foundation. */ #include #include #include #define S3C2410_UART1_OFF (0x4000) #define SHIFT_2440TXF (14-9) .macro addruart, rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 ldreq \rx, = S3C24XX_PA_UART ldrne \rx, = S3C24XX_VA_UART #if CONFIG_DEBUG_S3C_UART != 0 add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART) #endif .endm .macro fifo_full_s3c24xx rd, rx @ check for arm920 vs arm926. currently assume all arm926 @ devices have an 64 byte FIFO identical to the s3c2440 mrc p15, 0, \rd, c0, c0 and \rd, \rd, #0xff0 teq \rd, #0x260 beq 1004f mrc p15, 0, \rd, c1, c0 tst \rd, #1 addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART) addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART) bic \rd, \rd, #0xff000 ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ] and \rd, \rd, #0x00ff0000 teq \rd, #0x00440000 @ is it 2440? 1004: ldr \rd, [ \rx, # S3C2410_UFSTAT ] moveq \rd, \rd, lsr #SHIFT_2440TXF tst \rd, #S3C2410_UFSTAT_TXFULL .endm .macro fifo_full_s3c2410 rd, rx ldr \rd, [ \rx, # S3C2410_UFSTAT ] tst \rd, #S3C2410_UFSTAT_TXFULL .endm /* fifo level reading */ .macro fifo_level_s3c24xx rd, rx @ check for arm920 vs arm926. currently assume all arm926 @ devices have an 64 byte FIFO identical to the s3c2440 mrc p15, 0, \rd, c0, c0 and \rd, \rd, #0xff0 teq \rd, #0x260 beq 10000f mrc p15, 0, \rd, c1, c0 tst \rd, #1 addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART) addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART) bic \rd, \rd, #0xff000 ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ] and \rd, \rd, #0x00ff0000 teq \rd, #0x00440000 @ is it 2440? 10000: ldr \rd, [ \rx, # S3C2410_UFSTAT ] andne \rd, \rd, #S3C2410_UFSTAT_TXMASK andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK .endm .macro fifo_level_s3c2410 rd, rx ldr \rd, [ \rx, # S3C2410_UFSTAT ] and \rd, \rd, #S3C2410_UFSTAT_TXMASK .endm /* Select the correct implementation depending on the configuration. The * S3C2440 will get selected by default, as these are the most widely * used variants of these */ #if defined(CONFIG_CPU_LLSERIAL_S3C2410_ONLY) #define fifo_full fifo_full_s3c2410 #define fifo_level fifo_level_s3c2410 #elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY) #define fifo_full fifo_full_s3c24xx #define fifo_level fifo_level_s3c24xx #endif /* include the reset of the code which will do the work */ #include