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

   1 /*
   2  * arch/arm/mach-tegra/include/mach/debug-macro.S
   3  *
   4  * Copyright (C) 2010 Google, Inc.
   5  *
   6  * Author:
   7  *      Colin Cross <ccross@google.com>
   8  *      Erik Gilling <konkers@google.com>
   9  *
  10  * This software is licensed under the terms of the GNU General Public
  11  * License version 2, as published by the Free Software Foundation, and
  12  * may be copied, distributed, and modified under those terms.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  */
  20
  21 #include <mach/io.h>
  22
  23         .macro  addruart,rx, tmp
  24         mrc     p15, 0, \rx, c1, c0
  25         tst     \rx, #1                 @ MMU enabled?
  26         ldreq   \rx, =IO_APB_PHYS       @ physical
  27         ldrne   \rx, =IO_APB_VIRT        @ virtual
  28 #if defined(CONFIG_TEGRA_DEBUG_UART_NONE)
  29 #error "A debug UART must be selected in the kernel config to use DEBUG_LL"
  30 #elif defined(CONFIG_TEGRA_DEBUG_UARTA)
  31         orr     \rx, \rx, #0x6000
  32 #elif defined(CONFIG_TEGRA_DEBUG_UARTB)
  33         ldr     \tmp, =0x6040
  34         orr     \rx, \rx, \tmp
  35 #elif defined(CONFIG_TEGRA_DEBUG_UARTC)
  36         orr     \rx, \rx, #0x6200
  37 #elif defined(CONFIG_TEGRA_DEBUG_UARTD)
  38         orr     \rx, \rx, #0x6300
  39 #elif defined(CONFIG_TEGRA_DEBUG_UARTE)
  40         orr     \rx, \rx, #0x6400
  41 #endif
  42         .endm
  43
  44 #define UART_SHIFT      2
  45 #include <asm/hardware/debug-8250.S>
  46