| /* 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 <asm/arch/map.h> |
| #include <asm/arch/regs-gpio.h> |
| #include <asm/plat-s3c/regs-serial.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_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 <asm/plat-s3c/debug-macro.S> |
