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

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
line wrap: on
line source

	.text
	.org	0

@ allow entry in Thumb state
	.code	16
	bx	pc
	nop

	.code	32

@ set CPSR like mot931c payload does
	msr	CPSR_c, #0xd3
@ disable the watchdog
	ldr	r1, =0xfffff802
	mov	r0, #0xf5
	strh	r0, [r1, #2]
	mov	r0, #0xa0
	strh	r0, [r1, #2]
@ MODEM UART
	ldr	r6, =0xffff5800
@ wait for any previous output to flush out
1:	ldrb	r0, [r6, #5]
	tst	r0, #0x20
	beq	1b
@ send our indication
	adr	r1, outstr
	mov	r2, #6
1:	ldrb	r0, [r1], #1
	strb	r0, [r6]
	subs	r2, r2, #1
	bne	1b
@ wait for this output to go out to the TxD pin
1:	ldrb	r0, [r6, #5]
	tst	r0, #0x40
	beq	1b
@ enable the Calypso boot ROM
	ldr	r1, =0xFFFFFB10
	mov	r2, #0x0100
	strh	r2, [r1]
@ jump to it!
	mov	pc, #0
	.ltorg
outstr:	.byte	2,2,2,'O','K',2