FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/serextra.S @ 921:74d284add54d

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fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents 3229940734e5
children
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3229940734e5 loadagent: binary memload command implemented
Mychaela Falconia <falcon@freecalypso.org>
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1 #include "ns16550.h"
3229940734e5 loadagent: binary memload command implemented
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2
3229940734e5 loadagent: binary memload command implemented
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3 @ extra serial I/O functions for loadagent binary operations
3229940734e5 loadagent: binary memload command implemented
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4
3229940734e5 loadagent: binary memload command implemented
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5 .text
3229940734e5 loadagent: binary memload command implemented
Mychaela Falconia <falcon@freecalypso.org>
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6 .code 32
3229940734e5 loadagent: binary memload command implemented
Mychaela Falconia <falcon@freecalypso.org>
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7 .globl serial_out_if_empty
3229940734e5 loadagent: binary memload command implemented
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8 serial_out_if_empty:
3229940734e5 loadagent: binary memload command implemented
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9 ldr r1, =uart_base
3229940734e5 loadagent: binary memload command implemented
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10 ldr r2, [r1]
3229940734e5 loadagent: binary memload command implemented
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11 ldrb r3, [r2, #NS16550_LSR]
3229940734e5 loadagent: binary memload command implemented
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12 tst r3, #NS16550_LSR_THRE
3229940734e5 loadagent: binary memload command implemented
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13 strneb r0, [r2, #NS16550_THR]
3229940734e5 loadagent: binary memload command implemented
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14 bx lr