arch/arm/mach-ks8695/include/mach/debug-macro.S

   1 /*
   2  * arch/arm/mach-ks8695/include/mach/debug-macro.S
   3  *
   4  * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
   5  * Copyright (C) 2006 Simtec Electronics
   6  *
   7  * KS8695 - Debug macros
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <mach/hardware.h>
  15 #include <mach/regs-uart.h>
  16
  17         .macro  addruart, rp, rv, tmp
  18                 ldr     \rp, =KS8695_UART_PA            @ physical base address
  19                 ldr     \rv, =KS8695_UART_VA            @ virtual base address
  20         .endm
  21
  22         .macro  senduart, rd, rx
  23                 str     \rd, [\rx, #KS8695_URTH]        @ Write to Transmit Holding Register
  24         .endm
  25
  26         .macro  busyuart, rd, rx
  27 1001:           ldr     \rd, [\rx, #KS8695_URLS]        @ Read Line Status Register
  28                 tst     \rd, #URLS_URTE                 @ Holding & Shift registers empty?
  29                 beq     1001b
  30         .endm
  31
  32         .macro  waituart, rd, rx
  33 1001:           ldr     \rd, [\rx, #KS8695_URLS]        @ Read Line Status Register
  34                 tst     \rd, #URLS_URTHRE               @ Holding Register empty?
  35                 beq     1001b
  36         .endm