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annotate target-utils/libcommon/serflush.S @ 390:bb4814eb51e4

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target-utils abb[rw] commands: call abb_init() to avoid dead hang
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 11 Jun 2014 07:11:16 +0000
parents 1a3bbab2ea26
children
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1a3bbab2ea26 loadagent: jump command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 #include "ns16550.h"
1a3bbab2ea26 loadagent: jump command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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2
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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3 .text
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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4 .code 32
1a3bbab2ea26 loadagent: jump command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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5 .global serial_flush
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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6 serial_flush:
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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7 ldr r1, =uart_base
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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8 ldr r2, [r1]
1a3bbab2ea26 loadagent: jump command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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9 1: ldrb r3, [r2, #NS16550_LSR]
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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10 tst r3, #NS16550_LSR_TEMP
1a3bbab2ea26 loadagent: jump command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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11 beq 1b
1a3bbab2ea26 loadagent: jump command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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12 bx lr