FreeCalypso > hg > freecalypso-tools

annotate target-utils/tf-breakin/payload.S @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents e7502631a0f9
children
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1 .text
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2 .org 0
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3
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4 @ allow entry in Thumb state
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5 .code 16
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6 bx pc
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7 nop
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8
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9 .code 32
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11 @ set CPSR like mot931c payload does
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12 msr CPSR_c, #0xd3
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13 @ disable the watchdog
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14 ldr r1, =0xfffff802
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15 mov r0, #0xf5
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16 strh r0, [r1, #2]
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17 mov r0, #0xa0
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18 strh r0, [r1, #2]
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19 @ MODEM UART
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20 ldr r6, =0xffff5800
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21 @ wait for any previous output to flush out
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22 1: ldrb r0, [r6, #5]
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23 tst r0, #0x20
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24 beq 1b
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25 @ send our indication
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26 adr r1, outstr
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27 mov r2, #6
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28 1: ldrb r0, [r1], #1
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29 strb r0, [r6]
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30 subs r2, r2, #1
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31 bne 1b
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32 @ wait for this output to go out to the TxD pin
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33 1: ldrb r0, [r6, #5]
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34 tst r0, #0x40
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35 beq 1b
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36 @ enable the Calypso boot ROM
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37 ldr r1, =0xFFFFFB10
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38 mov r2, #0x0100
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39 strh r2, [r1]
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40 @ jump to it!
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41 mov pc, #0
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42 .ltorg
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43 outstr: .byte 2,2,2,'O','K',2