diff options
Diffstat (limited to 'arch/arm/mach-zynq/slcr.c')
| -rw-r--r-- | arch/arm/mach-zynq/slcr.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c index c3c24fd8b306..26320ebf3493 100644 --- a/arch/arm/mach-zynq/slcr.c +++ b/arch/arm/mach-zynq/slcr.c @@ -15,6 +15,7 @@ */ #include <linux/io.h> +#include <linux/reboot.h> #include <linux/mfd/syscon.h> #include <linux/of_address.h> #include <linux/regmap.h> @@ -92,20 +93,21 @@ u32 zynq_slcr_get_device_id(void) } /** - * zynq_slcr_system_reset - Reset the entire system. + * zynq_slcr_system_restart - Restart the entire system. + * + * @nb: Pointer to restart notifier block (unused) + * @action: Reboot mode (unused) + * @data: Restart handler private data (unused) + * + * Return: 0 always */ -void zynq_slcr_system_reset(void) +static +int zynq_slcr_system_restart(struct notifier_block *nb, + unsigned long action, void *data) { u32 reboot; /* - * Unlock the SLCR then reset the system. - * Note that this seems to require raw i/o - * functions or there's a lockup? - */ - zynq_slcr_unlock(); - - /* * Clear 0x0F000000 bits of reboot status register to workaround * the FSBL not loading the bitstream after soft-reboot * This is a temporary solution until we know more. @@ -113,8 +115,14 @@ void zynq_slcr_system_reset(void) zynq_slcr_read(&reboot, SLCR_REBOOT_STATUS_OFFSET); zynq_slcr_write(reboot & 0xF0FFFFFF, SLCR_REBOOT_STATUS_OFFSET); zynq_slcr_write(1, SLCR_PS_RST_CTRL_OFFSET); + return 0; } +static struct notifier_block zynq_slcr_restart_nb = { + .notifier_call = zynq_slcr_system_restart, + .priority = 192, +}; + /** * zynq_slcr_cpu_start - Start cpu * @cpu: cpu number @@ -219,6 +227,8 @@ int __init zynq_early_slcr_init(void) /* unlock the SLCR so that registers can be changed */ zynq_slcr_unlock(); + register_restart_handler(&zynq_slcr_restart_nb); + pr_info("%s mapped to %p\n", np->name, zynq_slcr_base); of_node_put(np); |