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Viewing changes to arch/arm/mach-lh7a40x/include/mach/debug-macro.S

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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arch/arm/mach-lh7a40x/include/mach/debug-macro.S
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/* arch/arm/mach-lh7a40x/include/mach/debug-macro.S
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 *
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 * Debugging macro include header
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 *
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 *  Copyright (C) 1994-1999 Russell King
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 *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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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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        @ It is not known if this will be appropriate for every 40x
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        @ board.
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                .macro  addruart, rp, rv
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                mov     \rp, #0x00000700        @ offset from base
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                orr     \rv, \rp, #0xf8000000   @ virtual base
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                orr     \rp, \rp, #0x80000000   @ physical base
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                .endm
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                .macro  senduart,rd,rx
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                strb    \rd, [\rx]              @ DATA
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                .endm
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                .macro  busyuart,rd,rx          @ spin while busy
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1001:           ldr     \rd, [\rx, #0x10]       @ STATUS
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                tst     \rd, #1 << 3            @ BUSY (TX FIFO not empty)
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                bne     1001b                   @ yes, spin
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                .endm
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                .macro  waituart,rd,rx          @ wait for Tx FIFO room
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1001:           ldrb    \rd, [\rx, #0x10]       @ STATUS
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                tst     \rd, #1 << 5            @ TXFF (TX FIFO full)
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                bne     1001b                   @ yes, spin
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                .endm