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OSL reconstruction: os_isr.c: interrupt control functions done
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 07 May 2014 20:18:11 +0000
parents 1a3bbab2ea26
children
line wrap: on
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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