| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* linux/include/asm-arm/arch-s3c2410/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 | * Modifications: |
| 15 | * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA |
| 16 | */ |
| 17 | |
| 18 | #include <asm/arch/map.h> |
| 19 | #include <asm/arch/regs-serial.h> |
| 20 | #include <asm/arch/regs-gpio.h> |
| 21 | |
| 22 | #define S3C2410_UART1_OFF (0x4000) |
| 23 | #define SHIFT_2440TXF (14-9) |
| 24 | |
| 25 | .macro addruart, rx |
| 26 | mrc p15, 0, \rx, c1, c0 |
| 27 | tst \rx, #1 |
| 28 | ldreq \rx, = S3C2410_PA_UART |
| 29 | ldrne \rx, = S3C24XX_VA_UART |
| 30 | #if CONFIG_DEBUG_S3C2410_UART != 0 |
| 31 | add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C2410_UART) |
| 32 | #endif |
| 33 | .endm |
| 34 | |
| 35 | .macro senduart,rd,rx |
| 36 | str \rd, [\rx, # S3C2410_UTXH ] |
| 37 | .endm |
| 38 | |
| 39 | .macro busyuart, rd, rx |
| 40 | ldr \rd, [ \rx, # S3C2410_UFCON ] |
| 41 | tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? |
| 42 | beq 1001f @ |
| 43 | @ FIFO enabled... |
| 44 | 1003: |
| 45 | mrc p15, 0, \rd, c1, c0 |
| 46 | tst \rd, #1 |
| 47 | addeq \rd, \rx, #(S3C2410_PA_GPIO - S3C2410_PA_UART) |
| 48 | addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART) |
| 49 | bic \rd, \rd, #0xff000 |
| 50 | ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ] |
| 51 | and \rd, \rd, #0x00ff0000 |
| 52 | teq \rd, #0x00440000 @ is it 2440? |
| 53 | |
| 54 | ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| 55 | moveq \rd, \rd, lsr #SHIFT_2440TXF |
| 56 | tst \rd, #S3C2410_UFSTAT_TXFULL |
| 57 | bne 1003b |
| 58 | b 1002f |
| 59 | |
| 60 | 1001: |
| 61 | @ busy waiting for non fifo |
| 62 | ldr \rd, [ \rx, # S3C2410_UTRSTAT ] |
| 63 | tst \rd, #S3C2410_UTRSTAT_TXFE |
| 64 | beq 1001b |
| 65 | |
| 66 | 1002: @ exit busyuart |
| 67 | .endm |
| 68 | |
| 69 | .macro waituart,rd,rx |
| 70 | |
| 71 | ldr \rd, [ \rx, # S3C2410_UFCON ] |
| 72 | tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? |
| 73 | beq 1001f @ |
| 74 | @ FIFO enabled... |
| 75 | 1003: |
| 76 | mrc p15, 0, \rd, c1, c0 |
| 77 | tst \rd, #1 |
| 78 | addeq \rd, \rx, #(S3C2410_PA_GPIO - S3C2410_PA_UART) |
| 79 | addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART) |
| 80 | bic \rd, \rd, #0xff000 |
| 81 | ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ] |
| 82 | and \rd, \rd, #0x00ff0000 |
| 83 | teq \rd, #0x00440000 @ is it 2440? |
| 84 | |
| 85 | ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| 86 | andne \rd, \rd, #S3C2410_UFSTAT_TXMASK |
| 87 | andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK |
| 88 | teq \rd, #0 |
| 89 | bne 1003b |
| 90 | b 1002f |
| 91 | |
| 92 | 1001: |
| 93 | @ idle waiting for non fifo |
| 94 | ldr \rd, [ \rx, # S3C2410_UTRSTAT ] |
| 95 | tst \rd, #S3C2410_UTRSTAT_TXFE |
| 96 | beq 1001b |
| 97 | |
| 98 | 1002: @ exit busyuart |
| 99 | .endm |