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- /* arch/arm/mach-s3c2410/include/mach/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 <mach/map.h>
- #include <mach/regs-gpio.h>
- #include <plat/regs-serial.h>
- #define S3C2410_UART1_OFF (0x4000)
- #define SHIFT_2440TXF (14-9)
- .macro addruart, rx, tmp
- 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 <plat/debug-macro.S>
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