diff options
Diffstat (limited to 'arch/arm/cpu/armv7/socfpga/reset_manager.c')
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/reset_manager.c | 39 | 
1 files changed, 39 insertions, 0 deletions
| diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c b/arch/arm/cpu/armv7/socfpga/reset_manager.c new file mode 100644 index 000000000..e320c011a --- /dev/null +++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c @@ -0,0 +1,39 @@ +/* + *  Copyright (C) 2013 Altera Corporation <www.altera.com> + * + * SPDX-License-Identifier:	GPL-2.0+ + */ + + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/reset_manager.h> + +DECLARE_GLOBAL_DATA_PTR; + +static const struct socfpga_reset_manager *reset_manager_base = +		(void *)SOCFPGA_RSTMGR_ADDRESS; + +/* + * Write the reset manager register to cause reset + */ +void reset_cpu(ulong addr) +{ +	/* request a warm reset */ +	writel((1 << RSTMGR_CTRL_SWWARMRSTREQ_LSB), +		&reset_manager_base->ctrl); +	/* +	 * infinite loop here as watchdog will trigger and reset +	 * the processor +	 */ +	while (1) +		; +} + +/* + * Release peripherals from reset based on handoff + */ +void reset_deassert_peripherals_handoff(void) +{ +	writel(0, &reset_manager_base->per_mod_reset); +} |