41 lines
860 B
ArmAsm
41 lines
860 B
ArmAsm
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/* linux/include/asm-arm/arch-ixp2000/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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.macro addruart,rx
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0xc0000000 @ Physical base
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movne \rx, #0xfe000000 @ virtual base
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orrne \rx, \rx, #0x00f00000
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orr \rx, \rx, #0x00030000
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#ifdef __ARMEB__
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orr \rx, \rx, #0x00000003
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#endif
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro busyuart,rd,rx
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1002: ldrb \rd, [\rx, #0x14]
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tst \rd, #0x20
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beq 1002b
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.endm
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.macro waituart,rd,rx
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nop
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nop
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nop
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.endm
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