include/asm-arm/arch-iop3xx/debug-macro.S

   1 /* linux/include/asm-arm/arch-iop3xx/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                 mov     \rx, #0xfe000000        @ physical
  16 #if defined(CONFIG_ARCH_IQ80321) || defined(CONFIG_ARCH_IQ31244)
  17                 orr     \rx, \rx, #0x00800000   @ location of the UART
  18 #elif defined(CONFIG_ARCH_IOP331)
  19                 mrc     p15, 0, \rx, c1, c0
  20                 tst     \rx, #1                 @ MMU enabled?
  21                 moveq   \rx, #0x000fe000        @ Physical Base
  22                 movne   \rx, #0
  23                 orr     \rx, \rx, #0xfe000000
  24                 orr     \rx, \rx, #0x00f00000   @ Virtual Base
  25                 orr     \rx, \rx, #0x00001700   @ location of the UART
  26 #else
  27 #error Unknown IOP3XX implementation
  28 #endif
  29                 .endm
  30
  31                 .macro  senduart,rd,rx
  32                 strb    \rd, [\rx]
  33                 .endm
  34
  35                 .macro  busyuart,rd,rx
  36 1002:           ldrb    \rd, [\rx, #0x5]
  37                 and     \rd, \rd, #0x60
  38                 teq     \rd, #0x60
  39                 bne     1002b
  40                 .endm
  41
  42                 .macro  waituart,rd,rx
  43 #if !defined(CONFIG_ARCH_IQ80321) || !defined(CONFIG_ARCH_IQ31244) || !defined(CONFIG_ARCH_IQ80331)
  44 1001:           ldrb    \rd, [\rx, #0x6]
  45                 tst     \rd, #0x10
  46                 beq     1001b
  47 #endif
  48                 .endm