include/asm-arm/arch-ixp2000/debug-macro.S

   1 /* linux/include/asm-arm/arch-ixp2000/debug-macro.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
  14                 .macro  addruart,rx
  15                 mrc     p15, 0, \rx, c1, c0
  16                 tst     \rx, #1                 @ MMU enabled?
  17                 moveq   \rx, #0xc0000000        @ Physical base
  18                 movne   \rx, #0xfe000000        @ virtual base
  19                 orrne   \rx, \rx, #0x00f00000
  20                 orr     \rx, \rx, #0x00030000
  21 #ifdef  __ARMEB__
  22                 orr     \rx, \rx, #0x00000003
  23 #endif
  24                 .endm
  25
  26                 .macro  senduart,rd,rx
  27                 strb    \rd, [\rx]
  28                 .endm
  29
  30                 .macro  busyuart,rd,rx
  31 1002:           ldrb    \rd, [\rx, #0x14]
  32                 tst     \rd, #0x20
  33                 beq     1002b
  34                 .endm
  35
  36                 .macro  waituart,rd,rx
  37                 nop
  38                 nop
  39                 nop
  40                 .endm