1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Processor reset using WDT.
4 *
5 * Copyright (C) 2012 Dmitry Bondar <bond@inmys.ru>
6 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
7 */
8
9 #include <common.h>
10 #include <asm/io.h>
11 #include <asm/arch/timer_defs.h>
12 #include <asm/arch/hardware.h>
13
reset_cpu(unsigned long a)14 void reset_cpu(unsigned long a)
15 {
16 struct davinci_timer *const wdttimer =
17 (struct davinci_timer *)DAVINCI_WDOG_BASE;
18 writel(0x08, &wdttimer->tgcr);
19 writel(readl(&wdttimer->tgcr) | 0x03, &wdttimer->tgcr);
20 writel(0, &wdttimer->tim12);
21 writel(0, &wdttimer->tim34);
22 writel(0, &wdttimer->prd12);
23 writel(0, &wdttimer->prd34);
24 writel(readl(&wdttimer->tcr) | 0x40, &wdttimer->tcr);
25 writel(readl(&wdttimer->wdtcr) | 0x4000, &wdttimer->wdtcr);
26 writel(0xa5c64000, &wdttimer->wdtcr);
27 writel(0xda7e4000, &wdttimer->wdtcr);
28 writel(0x4000, &wdttimer->wdtcr);
29 while (1)
30 /*nothing*/;
31 }
32