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

   1 /* linux/include/asm-arm/arch-imx/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 #include <asm/arch/hardware.h>
  15
  16 #ifdef CONFIG_MACH_MX31ADS
  17 #include <asm/arch/board-mx31ads.h>
  18 #endif
  19
  20                 .macro  addruart,rx
  21                 mrc     p15, 0, \rx, c1, c0
  22                 tst     \rx, #1                 @ MMU enabled?
  23                 ldreq   \rx, =MXC_LL_UART_PADDR @ physical
  24                 ldrne   \rx, =MXC_LL_UART_VADDR @ virtual
  25                 .endm
  26
  27                 .macro  senduart,rd,rx
  28                 str     \rd, [\rx, #0x40]       @ TXDATA
  29                 .endm
  30
  31                 .macro  waituart,rd,rx
  32                 .endm
  33
  34                 .macro  busyuart,rd,rx
  35 1002:           ldr     \rd, [\rx, #0x98]       @ SR2
  36                 tst     \rd, #1 << 3            @ TXDC
  37                 beq     1002b                   @ wait until transmit done
  38                 .endm