kernel/arch/arm/include/debug/asm9260.S

   1 /* Debugging macro include header
   2  *
   3  *  Copyright (C) 1994-1999 Russell King
   4  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
   5  *  Modified for ASM9260 by Oleksij Remepl <linux@rempel-privat.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  */
  12
  13                 .macro  addruart, rp, rv, tmp
  14                 ldr     \rp, = CONFIG_DEBUG_UART_PHYS
  15                 ldr     \rv, = CONFIG_DEBUG_UART_VIRT
  16                 .endm
  17
  18                 .macro  waituart,rd,rx
  19                 .endm
  20
  21                 .macro  senduart,rd,rx
  22                 str     \rd, [\rx, #0x50]       @ TXDATA
  23                 .endm
  24
  25                 .macro  busyuart,rd,rx
  26 1002:           ldr     \rd, [\rx, #0x60]       @ STAT
  27                 tst     \rd, #1 << 27           @ TXEMPTY
  28                 beq     1002b                   @ wait until transmit done
  29                 .endm