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

   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 #ifdef CONFIG_ARCH_OMAP1
  18                 moveq   \rx, #0xff000000        @ physical base address
  19                 movne   \rx, #0xfe000000        @ virtual base
  20                 orr     \rx, \rx, #0x00fb0000
  21 #ifdef CONFIG_OMAP_LL_DEBUG_UART3
  22                 orr     \rx, \rx, #0x00009000   @ UART 3
  23 #endif
  24 #if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3)
  25                 orr     \rx, \rx, #0x00000800   @ UART 2 & 3
  26 #endif
  27
  28 #elif  CONFIG_ARCH_OMAP2
  29                 moveq   \rx, #0x48000000        @ physical base address
  30                 movne   \rx, #0xd8000000        @ virtual base
  31                 orr     \rx, \rx, #0x0006a000
  32 #ifdef CONFIG_OMAP_LL_DEBUG_UART2
  33                 add     \rx, \rx, #0x00002000   @ UART 2
  34 #endif
  35 #ifdef CONFIG_OMAP_LL_DEBUG_UART3
  36                 add     \rx, \rx, #0x00004000   @ UART 3
  37 #endif
  38 #endif
  39                 .endm
  40
  41                 .macro  senduart,rd,rx
  42                 strb    \rd, [\rx]
  43                 .endm
  44
  45                 .macro  busyuart,rd,rx
  46 1001:           ldrb    \rd, [\rx, #(0x5 << 2)] @ OMAP-1510 and friends
  47                 and     \rd, \rd, #0x60
  48                 teq     \rd, #0x60
  49                 beq     1002f
  50                 ldrb    \rd, [\rx, #(0x5 << 0)] @ OMAP-730 only
  51                 and     \rd, \rd, #0x60
  52                 teq     \rd, #0x60
  53                 bne     1001b
  54 1002:
  55                 .endm
  56
  57                 .macro  waituart,rd,rx
  58                 .endm