From 6c17839b36190effdcfb8710e19f9157000fb7d8 Mon Sep 17 00:00:00 2001 From: Vipin KUMAR Date: Fri, 15 Jan 2010 19:15:43 +0530 Subject: SPEAr : Adding basic SPEAr architecture support. SPEAr Architecture support added. It contains the support for following SPEAr blocks - Timer - System controller - Misc registers Signed-off-by: Vipin --- cpu/arm926ejs/spear/reset.c | 54 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100755 cpu/arm926ejs/spear/reset.c (limited to 'cpu/arm926ejs/spear/reset.c') diff --git a/cpu/arm926ejs/spear/reset.c b/cpu/arm926ejs/spear/reset.c new file mode 100755 index 0000000..73ad86d --- /dev/null +++ b/cpu/arm926ejs/spear/reset.c @@ -0,0 +1,54 @@ +/* + * (C) Copyright 2009 + * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.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 +#include +#include +#include + +void reset_cpu(ulong ignored) +{ + struct syscntl_regs *syscntl_regs_p = + (struct syscntl_regs *)CONFIG_SPEAR_SYSCNTLBASE; + + printf("System is going to reboot ...\n"); + + /* + * This 1 second delay will allow the above message + * to be printed before reset + */ + udelay((1000 * 1000)); + + /* Going into slow mode before resetting SOC */ + writel(0x02, &syscntl_regs_p->scctrl); + + /* + * Writing any value to the system status register will + * reset the SoC + */ + writel(0x00, &syscntl_regs_p->scsysstat); + + /* system will restart */ + while (1) + ; +} -- cgit v1.1