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

   1 /* arch/arm/mach-msm7200/include/mach/debug-macro.S
   2  *
   3  * Copyright (C) 2007 Google, Inc.
   4  * Author: Brian Swetland <swetland@google.com>
   5  *
   6  * This software is licensed under the terms of the GNU General Public
   7  * License version 2, as published by the Free Software Foundation, and
   8  * may be copied, distributed, and modified under those terms.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17
  18
  19 #include <mach/hardware.h>
  20 #include <mach/msm_iomap.h>
  21
  22 #ifdef CONFIG_MSM_DEBUG_UART
  23         .macro  addruart, rx, tmp
  24         @ see if the MMU is enabled and select appropriate base address
  25         mrc     p15, 0, \rx, c1, c0
  26         tst     \rx, #1
  27         ldreq   \rx, =MSM_DEBUG_UART_PHYS
  28         ldrne   \rx, =MSM_DEBUG_UART_BASE
  29         .endm
  30
  31         .macro  senduart,rd,rx
  32         teq     \rx, #0
  33         strne   \rd, [\rx, #0x0C]
  34         .endm
  35
  36         .macro  waituart,rd,rx
  37         @ wait for TX_READY
  38 1001:   ldr     \rd, [\rx, #0x08]
  39         tst     \rd, #0x04
  40         beq     1001b
  41         .endm
  42 #else
  43         .macro  addruart, rx, tmp
  44         .endm
  45
  46         .macro  senduart,rd,rx
  47         .endm
  48
  49         .macro  waituart,rd,rx
  50         .endm
  51 #endif
  52
  53         .macro  busyuart,rd,rx
  54         .endm