arch/arm/include/asm/hardware/debug-pl01x.S

   1 /* arch/arm/include/asm/hardware/debug-pl01x.S
   2  *
   3  * Debugging macro include header
   4  *
   5  *  Copyright (C) 1994-1999 Russell King
   6  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12 */
  13 #include <linux/amba/serial.h>
  14
  15                 .macro  senduart,rd,rx
  16                 strb    \rd, [\rx, #UART01x_DR]
  17                 .endm
  18
  19                 .macro  waituart,rd,rx
  20 1001:           ldr     \rd, [\rx, #UART01x_FR]
  21  ARM_BE8(       rev     \rd, \rd )
  22                 tst     \rd, #UART01x_FR_TXFF
  23                 bne     1001b
  24                 .endm
  25
  26                 .macro  busyuart,rd,rx
  27 1001:           ldr     \rd, [\rx, #UART01x_FR]
  28  ARM_BE8(       rev     \rd, \rd )
  29                 tst     \rd, #UART01x_FR_BUSY
  30                 bne     1001b
  31                 .endm