| Ben Dooks | c116c1d | 2010-01-29 09:02:12 +0000 | [diff] [blame] | 1 | /* arch/arm/plat-samsung/include/plat/debug-macro.S |
| Ben Dooks | 498e03b | 2007-07-22 16:08:48 +0100 | [diff] [blame] | 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 | |
| Ben Dooks | a2b7ba9 | 2008-10-07 22:26:09 +0100 | [diff] [blame] | 12 | #include <plat/regs-serial.h> |
| Ben Dooks | 498e03b | 2007-07-22 16:08:48 +0100 | [diff] [blame] | 13 | |
| Kukjin Kim | 5f7f6a4 | 2010-01-29 10:12:14 +0900 | [diff] [blame] | 14 | /* The S5PV210/S5PC110 and S5P6442 implementations are as belows. */ |
| 15 | |
| 16 | .macro fifo_level_s5pv210 rd, rx |
| 17 | ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| 18 | and \rd, \rd, #S5PV210_UFSTAT_TXMASK |
| 19 | .endm |
| 20 | |
| 21 | .macro fifo_full_s5pv210 rd, rx |
| 22 | ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| 23 | tst \rd, #S5PV210_UFSTAT_TXFULL |
| 24 | .endm |
| 25 | |
| Ben Dooks | cbc4dbf | 2007-07-22 16:10:23 +0100 | [diff] [blame] | 26 | /* The S3C2440 implementations are used by default as they are the |
| 27 | * most widely re-used */ |
| 28 | |
| 29 | .macro fifo_level_s3c2440 rd, rx |
| 30 | ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| 31 | and \rd, \rd, #S3C2440_UFSTAT_TXMASK |
| 32 | .endm |
| 33 | |
| 34 | #ifndef fifo_level |
| Ben Dooks | f0c9eb4 | 2008-10-21 14:06:25 +0100 | [diff] [blame] | 35 | #define fifo_level fifo_level_s3c2440 |
| Ben Dooks | cbc4dbf | 2007-07-22 16:10:23 +0100 | [diff] [blame] | 36 | #endif |
| 37 | |
| 38 | .macro fifo_full_s3c2440 rd, rx |
| 39 | ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| 40 | tst \rd, #S3C2440_UFSTAT_TXFULL |
| 41 | .endm |
| 42 | |
| 43 | #ifndef fifo_full |
| 44 | #define fifo_full fifo_full_s3c2440 |
| 45 | #endif |
| Ben Dooks | 498e03b | 2007-07-22 16:08:48 +0100 | [diff] [blame] | 46 | |
| 47 | .macro senduart,rd,rx |
| 48 | strb \rd, [\rx, # S3C2410_UTXH ] |
| 49 | .endm |
| 50 | |
| 51 | .macro busyuart, rd, rx |
| 52 | ldr \rd, [ \rx, # S3C2410_UFCON ] |
| 53 | tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? |
| 54 | beq 1001f @ |
| 55 | @ FIFO enabled... |
| 56 | 1003: |
| 57 | fifo_full \rd, \rx |
| 58 | bne 1003b |
| 59 | b 1002f |
| 60 | |
| 61 | 1001: |
| 62 | @ busy waiting for non fifo |
| 63 | ldr \rd, [ \rx, # S3C2410_UTRSTAT ] |
| 64 | tst \rd, #S3C2410_UTRSTAT_TXFE |
| 65 | beq 1001b |
| 66 | |
| 67 | 1002: @ exit busyuart |
| 68 | .endm |
| 69 | |
| 70 | .macro waituart,rd,rx |
| Ben Dooks | 498e03b | 2007-07-22 16:08:48 +0100 | [diff] [blame] | 71 | ldr \rd, [ \rx, # S3C2410_UFCON ] |
| 72 | tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? |
| 73 | beq 1001f @ |
| 74 | @ FIFO enabled... |
| 75 | 1003: |
| 76 | fifo_level \rd, \rx |
| 77 | teq \rd, #0 |
| 78 | bne 1003b |
| 79 | b 1002f |
| 80 | 1001: |
| 81 | @ idle waiting for non fifo |
| 82 | ldr \rd, [ \rx, # S3C2410_UTRSTAT ] |
| 83 | tst \rd, #S3C2410_UTRSTAT_TXFE |
| 84 | beq 1001b |
| 85 | |
| 86 | 1002: @ exit busyuart |
| 87 | .endm |