FreeCalypso > hg > freecalypso-sw
annotate target-utils/libcommon/serio.S @ 945:86ff6d0b0a97
loadtools: fc-compalram trivial utility added
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
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date | Mon, 02 Nov 2015 17:36:02 +0000 |
parents | d7591faa1258 |
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1
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1 #include "ns16550.h" |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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2 |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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3 @ this module implements the elementary serial I/O operations |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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4 |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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5 .text |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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6 .code 32 |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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7 .global serial_out |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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8 serial_out: |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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9 ldr r1, =uart_base |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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10 ldr r2, [r1] |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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11 1: ldrb r3, [r2, #NS16550_LSR] |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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12 tst r3, #NS16550_LSR_THRE |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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13 beq 1b |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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14 strb r0, [r2, #NS16550_THR] |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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15 bx lr |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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16 |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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17 .global serial_in_poll |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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18 serial_in_poll: |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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changeset
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19 ldr r1, =uart_base |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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changeset
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20 ldr r2, [r1] |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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21 ldrb r3, [r2, #NS16550_LSR] |
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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22 tst r3, #NS16550_LSR_DR |
393
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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23 ldrneb r0, [r2, #NS16550_RBR] |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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24 mvneq r0, #0 |
1
da98dc08f575
loadagent: beginning to lay the foundation
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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25 bx lr |
393
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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26 |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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27 .global serial_flush |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
11
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28 serial_flush: |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
11
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29 ldr r1, =uart_base |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
11
diff
changeset
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30 ldr r2, [r1] |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
11
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31 1: ldrb r3, [r2, #NS16550_LSR] |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
11
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32 tst r3, #NS16550_LSR_TEMP |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
11
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33 beq 1b |
d7591faa1258
target-utils serial I/O made consistent with other projects
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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34 bx lr |