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

   1 /* linux/include/asm-arm/arch-imx/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, #0x00000000        @ physical
  18                 movne   \rx, #0xe0000000        @ virtual
  19                 orr     \rx, \rx, #0x00200000
  20                 orr     \rx, \rx, #0x00006000   @ UART1 offset
  21                 .endm
  22
  23                 .macro  senduart,rd,rx
  24                 str     \rd, [\rx, #0x40]       @ TXDATA
  25                 .endm
  26
  27                 .macro  waituart,rd,rx
  28                 .endm
  29
  30                 .macro  busyuart,rd,rx
  31 1002:           ldr     \rd, [\rx, #0x98]       @ SR2
  32                 tst     \rd, #1 << 3            @ TXDC
  33                 beq     1002b                   @ wait until transmit done
  34                 .endm