arch/arm/include/debug/icedcc.S

   1 /*
   2  *  arch/arm/include/debug/icedcc.S
   3  *
   4  *  Copyright (C) 1994-1999 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  */
  11
  12                 @@ debug using ARM EmbeddedICE DCC channel
  13
  14                 .macro  addruart, rp, rv, tmp
  15                 .endm
  16
  17 #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7)
  18
  19                 .macro  senduart, rd, rx
  20                 mcr     p14, 0, \rd, c0, c5, 0
  21                 .endm
  22
  23                 .macro  busyuart, rd, rx
  24 1001:
  25                 mrc     p14, 0, \rx, c0, c1, 0
  26                 tst     \rx, #0x20000000
  27                 beq     1001b
  28                 .endm
  29
  30                 .macro  waituart, rd, rx
  31                 mov     \rd, #0x2000000
  32 1001:
  33                 subs    \rd, \rd, #1
  34                 bmi     1002f
  35                 mrc     p14, 0, \rx, c0, c1, 0
  36                 tst     \rx, #0x20000000
  37                 bne     1001b
  38 1002:
  39                 .endm
  40
  41 #elif defined(CONFIG_CPU_XSCALE)
  42
  43                 .macro  senduart, rd, rx
  44                 mcr     p14, 0, \rd, c8, c0, 0
  45                 .endm
  46
  47                 .macro  busyuart, rd, rx
  48 1001:
  49                 mrc     p14, 0, \rx, c14, c0, 0
  50                 tst     \rx, #0x10000000
  51                 beq     1001b
  52                 .endm
  53
  54                 .macro  waituart, rd, rx
  55                 mov     \rd, #0x10000000
  56 1001:
  57                 subs    \rd, \rd, #1
  58                 bmi     1002f
  59                 mrc     p14, 0, \rx, c14, c0, 0
  60                 tst     \rx, #0x10000000
  61                 bne     1001b
  62 1002:
  63                 .endm
  64
  65 #else
  66
  67                 .macro  senduart, rd, rx
  68                 mcr     p14, 0, \rd, c1, c0, 0
  69                 .endm
  70
  71                 .macro  busyuart, rd, rx
  72 1001:
  73                 mrc     p14, 0, \rx, c0, c0, 0
  74                 tst     \rx, #2
  75                 beq     1001b
  76
  77                 .endm
  78
  79                 .macro  waituart, rd, rx
  80                 mov     \rd, #0x2000000
  81 1001:
  82                 subs    \rd, \rd, #1
  83                 bmi     1002f
  84                 mrc     p14, 0, \rx, c0, c0, 0
  85                 tst     \rx, #2
  86                 bne     1001b
  87 1002:
  88                 .endm
  89
  90 #endif  /* CONFIG_CPU_V6 */