arch/arm/mach-omap2/include/mach/debug-macro.S

   1 /* arch/arm/mach-omap2/include/mach/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_OMAP2
  18                 moveq   \rx, #0x48000000        @ physical base address
  19                 movne   \rx, #0xfa000000        @ virtual base
  20                 orr     \rx, \rx, #0x0006a000
  21 #ifdef CONFIG_OMAP_LL_DEBUG_UART2
  22                 add     \rx, \rx, #0x00002000   @ UART 2
  23 #endif
  24 #ifdef CONFIG_OMAP_LL_DEBUG_UART3
  25                 add     \rx, \rx, #0x00004000   @ UART 3
  26 #endif
  27
  28 #elif defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
  29                 moveq   \rx, #0x48000000        @ physical base address
  30                 movne   \rx, #0xfa000000        @ 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, #0x00fb0000   @ UART 3
  37                 add     \rx, \rx, #0x00006000
  38 #endif
  39 #endif
  40                 .endm
  41
  42                 .macro  senduart,rd,rx
  43                 strb    \rd, [\rx]
  44                 .endm
  45
  46                 .macro  busyuart,rd,rx
  47 1001:           ldrb    \rd, [\rx, #(0x5 << 2)] @ OMAP-1510 and friends
  48                 and     \rd, \rd, #0x60
  49                 teq     \rd, #0x60
  50                 beq     1002f
  51                 ldrb    \rd, [\rx, #(0x5 << 0)] @ OMAP-730 only
  52                 and     \rd, \rd, #0x60
  53                 teq     \rd, #0x60
  54                 bne     1001b
  55 1002:
  56                 .endm
  57
  58                 .macro  waituart,rd,rx
  59                 .endm