1/* arch/arm/plat-samsung/include/plat/debug-macro.S 2 * 3 * Copyright 2005, 2007 Simtec Electronics 4 * http://armlinux.simtec.co.uk/ 5 * Ben Dooks <ben@simtec.co.uk> 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#include <linux/serial_s3c.h> 13 14/* The S5PV210/S5PC110 implementations are as belows. */ 15 16 .macro fifo_level_s5pv210 rd, rx 17 ldr \rd, [\rx, # S3C2410_UFSTAT] 18ARM_BE8(rev \rd, \rd) 19 and \rd, \rd, #S5PV210_UFSTAT_TXMASK 20 .endm 21 22 .macro fifo_full_s5pv210 rd, rx 23 ldr \rd, [\rx, # S3C2410_UFSTAT] 24ARM_BE8(rev \rd, \rd) 25 tst \rd, #S5PV210_UFSTAT_TXFULL 26 .endm 27 28/* The S3C2440 implementations are used by default as they are the 29 * most widely re-used */ 30 31 .macro fifo_level_s3c2440 rd, rx 32 ldr \rd, [\rx, # S3C2410_UFSTAT] 33ARM_BE8(rev \rd, \rd) 34 and \rd, \rd, #S3C2440_UFSTAT_TXMASK 35 .endm 36 37#ifndef fifo_level 38#define fifo_level fifo_level_s3c2440 39#endif 40 41 .macro fifo_full_s3c2440 rd, rx 42 ldr \rd, [\rx, # S3C2410_UFSTAT] 43ARM_BE8(rev \rd, \rd) 44 tst \rd, #S3C2440_UFSTAT_TXFULL 45 .endm 46 47#ifndef fifo_full 48#define fifo_full fifo_full_s3c2440 49#endif 50 51 .macro senduart,rd,rx 52 strb \rd, [\rx, # S3C2410_UTXH] 53 .endm 54 55 .macro busyuart, rd, rx 56 ldr \rd, [\rx, # S3C2410_UFCON] 57ARM_BE8(rev \rd, \rd) 58 tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? 59 beq 1001f @ 60 @ FIFO enabled... 611003: 62 fifo_full \rd, \rx 63 bne 1003b 64 b 1002f 65 661001: 67 @ busy waiting for non fifo 68 ldr \rd, [\rx, # S3C2410_UTRSTAT] 69ARM_BE8(rev \rd, \rd) 70 tst \rd, #S3C2410_UTRSTAT_TXFE 71 beq 1001b 72 731002: @ exit busyuart 74 .endm 75 76 .macro waituart,rd,rx 77 ldr \rd, [\rx, # S3C2410_UFCON] 78ARM_BE8(rev \rd, \rd) 79 tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? 80 beq 1001f @ 81 @ FIFO enabled... 821003: 83 fifo_level \rd, \rx 84 teq \rd, #0 85 bne 1003b 86 b 1002f 871001: 88 @ idle waiting for non fifo 89 ldr \rd, [\rx, # S3C2410_UTRSTAT] 90ARM_BE8(rev \rd, \rd) 91 tst \rd, #S3C2410_UTRSTAT_TXFE 92 beq 1001b 93 941002: @ exit busyuart 95 .endm 96