1 /* 2 * (C) Copyright 2009 3 * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 #include <asm/io.h> 26 #include <asm/arch/hardware.h> 27 #include <asm/arch/spr_syscntl.h> 28 29 void reset_cpu(ulong ignored) 30 { 31 struct syscntl_regs *syscntl_regs_p = 32 (struct syscntl_regs *)CONFIG_SPEAR_SYSCNTLBASE; 33 34 printf("System is going to reboot ...\n"); 35 36 /* 37 * This 1 second delay will allow the above message 38 * to be printed before reset 39 */ 40 udelay((1000 * 1000)); 41 42 /* Going into slow mode before resetting SOC */ 43 writel(0x02, &syscntl_regs_p->scctrl); 44 45 /* 46 * Writing any value to the system status register will 47 * reset the SoC 48 */ 49 writel(0x00, &syscntl_regs_p->scsysstat); 50 51 /* system will restart */ 52 while (1) 53 ; 54 } 55