diff options
Diffstat (limited to 'arch/mips/ralink/reset.c')
| -rw-r--r-- | arch/mips/ralink/reset.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mips/ralink/reset.c b/arch/mips/ralink/reset.c new file mode 100644 index 0000000000..4875637ef4 --- /dev/null +++ b/arch/mips/ralink/reset.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * + * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * Copyright (C) 2013 John Crispin <john@phrozen.org> + */ + +#include <linux/pm.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/delay.h> + +#include <asm/reboot.h> + +#include <asm/mach-ralink/ralink_regs.h> + +/* Reset Control */ +#define SYSC_REG_RESET_CTRL 0x034 + +#define RSTCTL_RESET_PCI BIT(26) +#define RSTCTL_RESET_SYSTEM BIT(0) + +static void ralink_restart(char *command) +{ + if (IS_ENABLED(CONFIG_PCI)) { + rt_sysc_m32(0, RSTCTL_RESET_PCI, SYSC_REG_RESET_CTRL); + mdelay(50); + } + + local_irq_disable(); + rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL); + unreachable(); +} + +static int __init mips_reboot_setup(void) +{ + _machine_restart = ralink_restart; + + return 0; +} + +arch_initcall(mips_reboot_setup); |