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view target-utils/libcommon/serflush.S @ 291:69e8ae2b5ba2

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fc-fsio: fwrite implementation started
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 01 Mar 2014 02:36:25 +0000
parents 1a3bbab2ea26
children
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#include "ns16550.h"

	.text
	.code	32
	.global	serial_flush
serial_flush:
	ldr	r1, =uart_base
	ldr	r2, [r1]
1:	ldrb	r3, [r2, #NS16550_LSR]
	tst	r3, #NS16550_LSR_TEMP
	beq	1b
	bx	lr