diff options
Diffstat (limited to 'qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mx25/reset.c')
| -rw-r--r-- | qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mx25/reset.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mx25/reset.c b/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mx25/reset.c new file mode 100644 index 000000000..5db689dbb --- /dev/null +++ b/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mx25/reset.c @@ -0,0 +1,40 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke <azu@sysgo.de> + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> + * + * (C) Copyright 2009 + * Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> + +/* + * Reset the cpu by setting up the watchdog timer and let it time out + */ +void reset_cpu(ulong ignored) +{ + struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE; + /* Disable watchdog and set Time-Out field to 0 */ + writew(0, ®s->wcr); + + /* Write Service Sequence */ + writew(WSR_UNLOCK1, ®s->wsr); + writew(WSR_UNLOCK2, ®s->wsr); + + /* Enable watchdog */ + writew(WCR_WDE, ®s->wcr); + + while (1) ; +} |