diff options
Diffstat (limited to 'include/asm-arm/plat-s3c/debug-macro.S')
| -rw-r--r-- | include/asm-arm/plat-s3c/debug-macro.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/asm-arm/plat-s3c/debug-macro.S b/include/asm-arm/plat-s3c/debug-macro.S new file mode 100644 index 00000000000..a43bbfa90a0 --- /dev/null +++ b/include/asm-arm/plat-s3c/debug-macro.S @@ -0,0 +1,57 @@ +/* linux/include/asm-arm/plat-s3c/debug-macro.S + * + * Copyright 2005, 2007 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * 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/plat-s3c/regs-serial.h> + +#define S3C2410_UART1_OFF (0x4000) + + .macro senduart,rd,rx + strb \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: + fifo_full \rd, \rx + 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: + fifo_level \rd, \rx + 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 |