u-boot/arch/arm/cpu/armv7/omap-common/reset.c
Lokesh Vutla 702395073f ARM: OMAP3+: Detect reset type
Certain modules are not affected by means of
a warm reset and need not be configured again.
Adding an API to detect the reset reason warm/cold.

This will be used to skip the module configurations
that are retained across a warm reset.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
2012-07-07 14:07:34 +02:00

41 lines
1.2 KiB
C

/*
*
* Common layer for reset related functionality of OMAP based socs.
*
* (C) Copyright 2012
* Texas Instruments, <www.ti.com>
*
* Sricharan R <r.sricharan@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <linux/compiler.h>
void __weak reset_cpu(unsigned long ignored)
{
writel(PRM_RSTCTRL_RESET, PRM_RSTCTRL);
}
u32 __weak warm_reset(void)
{
return (readl(PRM_RSTST) & PRM_RSTST_WARM_RESET_MASK);
}