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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-h720x/include/mach/debug-macro.S
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/* arch/arm/mach-h720x/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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#include <mach/hardware.h>

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		.equ    io_virt, IO_VIRT

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		.equ    io_phys, IO_PHYS

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		.macro  addruart, rp, rv

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		mov     \rp, #0x00020000	@ UART1

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		add     \rv, \rp, #io_virt	@ virtual address

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		add     \rp, \rp, #io_phys	@ physical base address

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		.endm

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		.macro  senduart,rd,rx

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		str     \rd, [\rx, #0x0]        @ UARTDR

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		.endm

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		.macro  waituart,rd,rx

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1001:		ldr     \rd, [\rx, #0x18]       @ UARTFLG

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		tst     \rd, #1 << 5	       @ UARTFLGUTXFF - 1 when full

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		bne     1001b

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		.endm

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		.macro  busyuart,rd,rx

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1001:		ldr     \rd, [\rx, #0x18]       @ UARTFLG

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		tst     \rd, #1 << 3	       @ UARTFLGUBUSY - 1 when busy

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		bne     1001b

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		.endm

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