diff options
Diffstat (limited to 'roms/u-boot/arch/mips/mach-pic32/reset.c')
-rw-r--r-- | roms/u-boot/arch/mips/mach-pic32/reset.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/roms/u-boot/arch/mips/mach-pic32/reset.c b/roms/u-boot/arch/mips/mach-pic32/reset.c new file mode 100644 index 000000000..8071b13f7 --- /dev/null +++ b/roms/u-boot/arch/mips/mach-pic32/reset.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com> + * + */ + +#include <common.h> +#include <asm/io.h> +#include <mach/pic32.h> + +/* SYSKEY */ +#define UNLOCK_KEY1 0xaa996655 +#define UNLOCK_KEY2 0x556699aa +#define LOCK_KEY 0 + +#define RSWRST 0x1250 + +void _machine_restart(void) +{ + void __iomem *base; + + base = pic32_get_syscfg_base(); + + /* unlock sequence */ + writel(LOCK_KEY, base + SYSKEY); + writel(UNLOCK_KEY1, base + SYSKEY); + writel(UNLOCK_KEY2, base + SYSKEY); + + /* soft reset */ + writel(0x1, base + RSWRST); + (void) readl(base + RSWRST); + + while (1) + ; +} |