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   1 /* linux/include/asm-arm/arch-ebsa285/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/dec21285.h>
  15
  16 #ifndef CONFIG_DEBUG_DC21285_PORT
  17         /* For NetWinder debugging */
  18                 .macro  addruart,rx
  19                 mrc     p15, 0, \rx, c1, c0
  20                 tst     \rx, #1                 @ MMU enabled?
  21                 moveq   \rx, #0x7c000000        @ physical
  22                 movne   \rx, #0xff000000        @ virtual
  23                 orr     \rx, \rx, #0x000003f8
  24                 .endm
  25
  26 #define UART_SHIFT      0
  27 #define FLOW_CONTROL
  28 #include <asm/hardware/debug-8250.S>
  29
  30 #else
  31         /* For EBSA285 debugging */
  32                 .equ    dc21285_high, ARMCSR_BASE & 0xff000000
  33                 .equ    dc21285_low,  ARMCSR_BASE & 0x00ffffff
  34
  35                 .macro  addruart,rx
  36                 mrc     p15, 0, \rx, c1, c0
  37                 tst     \rx, #1                 @ MMU enabled?
  38                 moveq   \rx, #0x42000000
  39                 movne   \rx, #dc21285_high
  40                 .if     dc21285_low
  41                 orrne   \rx, \rx, #dc21285_low
  42                 .endif
  43                 .endm
  44
  45                 .macro  senduart,rd,rx
  46                 str     \rd, [\rx, #0x160]      @ UARTDR
  47                 .endm
  48
  49                 .macro  busyuart,rd,rx
  50 1001:           ldr     \rd, [\rx, #0x178]      @ UARTFLG
  51                 tst     \rd, #1 << 3
  52                 bne     1001b
  53                 .endm
  54
  55                 .macro  waituart,rd,rx
  56                 .endm
  57 #endif