diff options
Diffstat (limited to 'roms/u-boot/arch/arm/cpu/arm926ejs/spear/reset.c')
-rw-r--r-- | roms/u-boot/arch/arm/cpu/arm926ejs/spear/reset.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/cpu/arm926ejs/spear/reset.c b/roms/u-boot/arch/arm/cpu/arm926ejs/spear/reset.c new file mode 100644 index 000000000..97a624e16 --- /dev/null +++ b/roms/u-boot/arch/arm/cpu/arm926ejs/spear/reset.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2009 + * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com. + */ + +#include <common.h> +#include <cpu_func.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <asm/arch/spr_syscntl.h> +#include <linux/delay.h> + +void reset_cpu(void) +{ + 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) + ; +} |