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   1 /* linux/include/asm-arm/arch-versatile/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 #include <asm/hardware/amba_serial.h>
  15
  16                 .macro  addruart,rx
  17                 mrc     p15, 0, \rx, c1, c0
  18                 tst     \rx, #1                 @ MMU enabled?
  19                 moveq   \rx,      #0x10000000
  20                 movne   \rx,      #0xf1000000   @ virtual base
  21                 orr     \rx, \rx, #0x001F0000
  22                 orr     \rx, \rx, #0x00001000
  23                 .endm
  24
  25                 .macro  senduart,rd,rx
  26                 strb    \rd, [\rx, #UART01x_DR]
  27                 .endm
  28
  29                 .macro  waituart,rd,rx
  30 1001:           ldr     \rd, [\rx, #0x18]       @ UARTFLG
  31                 tst     \rd, #1 << 5            @ UARTFLGUTXFF - 1 when full
  32                 bne     1001b
  33                 .endm
  34
  35                 .macro  busyuart,rd,rx
  36 1001:           ldr     \rd, [\rx, #0x18]       @ UARTFLG
  37                 tst     \rd, #1 << 3            @ UARTFLGUBUSY - 1 when busy
  38                 bne     1001b
  39                 .endm