callout_reboot_omap.s

Centrality Atlas II development software

#
# Copyright 2007, 2008, QNX Software Systems. 
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# Licensed under the Apache License, Version 2.0 (the "License"). You 
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# This file may contain contributions from others, either as 
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# Please review this entire file for other proprietary rights or license 
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/*
 * TI OMAP 1510 / 5910 system reboot
 */

#include "callout.ah"
#include <arm/omap.h>

/*
 * -----------------------------------------------------------------------
 * Routine to patch callout code
 *
 * On entry:
 *	r0 - physical address of syspage
 *	r1 - virtual  address of syspage
 *	r2 - offset from start of syspage to start of the callout routine
 *	r3 - offset from start of syspage to read/write data used by callout
 * -----------------------------------------------------------------------
 */

patch_reboot:
	stmdb	sp!,{r4,lr}
	add		r4, r0, r2					// address of callout routine

	/*
	 * Map reset control registers
	 */
	mov		r0, #0x110	// size of reset control registers
	ldr		r1, Lpaddr
	bl		callout_io_map

	/*
	 * Patch the callout routine
	 */
	CALLOUT_PATCH	r4, r0, r1, r2, ip
	ldmia	sp!,{r4,pc}

Lpaddr:	.word	OMAP_CRPM_CTRL_BASE


CALLOUT_START(reboot_omap, 0, patch_reboot)
    /*
     * Get the base address of Clock, Reset, and Power Mode Control registers (patched)
     */

    mov     ip,     #0x000000ff
    orr     ip, ip, #0x0000ff00
    orr     ip, ip, #0x00ff0000
    orr     ip, ip, #0xff000000

	mov		r1, #0x00
	add		r2,ip,#0x100
	strh	r1, [r2, #0x0000]

	mov		r1, #0x08	/* SW_RST bit */
	strh	r1, [ip, #OMAP_ARM_RSTCT1]


CALLOUT_END(reboot_omap)