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Viewing changes to arch/arm/mach-at91/include/mach/debug-macro.S

  • Committer: Bazaar Package Importer
  • Author(s): Mathieu Poirier
  • Date: 2011-02-18 09:43:31 UTC
  • Revision ID: james.westby@ubuntu.com-20110218094331-eyubsja4f9k0yhmq
Tags: 2.6.35-1.1
Initial release.

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arch/arm/mach-at91/include/mach/debug-macro.S
 
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/*
 
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 * arch/arm/mach-at91/include/mach/debug-macro.S
 
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 *
 
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 *  Copyright (C) 2003-2005 SAN People
 
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 *
 
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 * Debugging macro include header
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License version 2 as
 
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 * published by the Free Software Foundation.
 
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 *
 
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*/
 
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#include <mach/hardware.h>
 
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#include <mach/at91_dbgu.h>
 
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        .macro  addruart, rx, tmp
 
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        mrc     p15, 0, \rx, c1, c0
 
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        tst     \rx, #1                                         @ MMU enabled?
 
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        ldreq   \rx, =(AT91_BASE_SYS + AT91_DBGU)               @ System peripherals (phys address)
 
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        ldrne   \rx, =(AT91_VA_BASE_SYS + AT91_DBGU)            @ System peripherals (virt address)
 
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        .endm
 
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        .macro  senduart,rd,rx
 
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        strb    \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)]        @ Write to Transmitter Holding Register
 
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        .endm
 
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        .macro  waituart,rd,rx
 
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1001:   ldr     \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)]         @ Read Status Register
 
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        tst     \rd, #AT91_DBGU_TXRDY                           @ DBGU_TXRDY = 1 when ready to transmit
 
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        beq     1001b
 
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        .endm
 
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        .macro  busyuart,rd,rx
 
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1001:   ldr     \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)]         @ Read Status Register
 
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        tst     \rd, #AT91_DBGU_TXEMPTY                         @ DBGU_TXEMPTY = 1 when transmission complete
 
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        beq     1001b
 
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        .endm
 
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