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   1 /* linux/include/asm-arm/arch-omap/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, #0xff000000        @ physical base address
  18                 movne   \rx, #0xfe000000        @ virtual base
  19                 orr     \rx, \rx, #0x00fb0000
  20 #ifdef CONFIG_OMAP_LL_DEBUG_UART3
  21                 orr     \rx, \rx, #0x00009000   @ UART 3
  22 #endif
  23 #if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3)
  24                 orr     \rx, \rx, #0x00000800   @ UART 2 & 3
  25 #endif
  26                 .endm
  27
  28                 .macro  senduart,rd,rx
  29                 strb    \rd, [\rx]
  30                 .endm
  31
  32                 .macro  busyuart,rd,rx
  33 1001:           ldrb    \rd, [\rx, #(0x5 << 2)] @ OMAP-1510 and friends
  34                 and     \rd, \rd, #0x60
  35                 teq     \rd, #0x60
  36                 beq     1002f
  37                 ldrb    \rd, [\rx, #(0x5 << 0)] @ OMAP-730 only
  38                 and     \rd, \rd, #0x60
  39                 teq     \rd, #0x60
  40                 bne     1001b
  41 1002:
  42                 .endm
  43
  44                 .macro  waituart,rd,rx
  45                 .endm