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   1 /* linux/include/asm-arm/arch-h720x/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                 .equ    io_virt, IO_BASE
  15                 .equ    io_phys, IO_START
  16
  17                 .macro  addruart,rx
  18                 mrc     p15, 0, \rx, c1, c0
  19                 tst     \rx, #1                @ MMU enabled?
  20                 moveq   \rx, #io_phys          @ physical base address
  21                 movne   \rx, #io_virt          @ virtual address
  22                 add     \rx, \rx, #0x00020000   @ UART1
  23                 .endm
  24
  25                 .macro  senduart,rd,rx
  26                 str     \rd, [\rx, #0x0]        @ UARTDR
  27
  28                 .endm
  29
  30                 .macro  waituart,rd,rx
  31 1001:           ldr     \rd, [\rx, #0x18]       @ UARTFLG
  32                 tst     \rd, #1 << 5           @ UARTFLGUTXFF - 1 when full
  33                 bne     1001b
  34                 .endm
  35
  36                 .macro  busyuart,rd,rx
  37 1001:           ldr     \rd, [\rx, #0x18]       @ UARTFLG
  38                 tst     \rd, #1 << 3           @ UARTFLGUBUSY - 1 when busy
  39                 bne     1001b
  40                 .endm