FreeCalypso > hg > freecalypso-sw

annotate target-utils/libcommon/serflush.S @ 275:cedf09b6b5ac

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started laying the foundation for fc-fsio host utility
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 23 Feb 2014 20:27:15 +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
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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
1a3bbab2ea26 loadagent: jump command implemented
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