| /* 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. |
| * |
| * Modifications: |
| * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA |
| */ |
| |
| #include <asm/arch/map.h> |
| #include <asm/arch/regs-serial.h> |
| #include <asm/arch/regs-gpio.h> |
| |
| #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_S3C2410_UART != 0 |
| add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C2410_UART) |
| #endif |
| .endm |
| |
| .macro senduart,rd,rx |
| str \rd, [\rx, # S3C2410_UTXH ] |
| .endm |
| |
| .macro busyuart, rd, rx |
| ldr \rd, [ \rx, # S3C2410_UFCON ] |
| tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? |
| beq 1001f @ |
| @ FIFO enabled... |
| 1003: |
| 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? |
| |
| ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| moveq \rd, \rd, lsr #SHIFT_2440TXF |
| tst \rd, #S3C2410_UFSTAT_TXFULL |
| bne 1003b |
| b 1002f |
| |
| 1001: |
| @ busy waiting for non fifo |
| ldr \rd, [ \rx, # S3C2410_UTRSTAT ] |
| tst \rd, #S3C2410_UTRSTAT_TXFE |
| beq 1001b |
| |
| 1002: @ exit busyuart |
| .endm |
| |
| .macro waituart,rd,rx |
| |
| ldr \rd, [ \rx, # S3C2410_UFCON ] |
| tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? |
| beq 1001f @ |
| @ FIFO enabled... |
| 1003: |
| 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? |
| |
| ldr \rd, [ \rx, # S3C2410_UFSTAT ] |
| andne \rd, \rd, #S3C2410_UFSTAT_TXMASK |
| andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK |
| teq \rd, #0 |
| bne 1003b |
| b 1002f |
| |
| 1001: |
| @ idle waiting for non fifo |
| ldr \rd, [ \rx, # S3C2410_UTRSTAT ] |
| tst \rd, #S3C2410_UTRSTAT_TXFE |
| beq 1001b |
| |
| 1002: @ exit busyuart |
| .endm |
