diff options
| -rw-r--r-- | drivers/sysreset/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/sysreset/Makefile | 1 | ||||
| -rw-r--r-- | drivers/sysreset/sysreset_microblaze.c | 30 |
3 files changed, 37 insertions, 0 deletions
diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig index cec612ed50..f2524c18b7 100644 --- a/drivers/sysreset/Kconfig +++ b/drivers/sysreset/Kconfig @@ -23,6 +23,12 @@ config SYSRESET_GPIO example on Microblaze where reset logic can be controlled via GPIO pin which triggers cpu reset. +config SYSRESET_MICROBLAZE + bool "Enable support for Microblaze soft reset" + depends on MICROBLAZE + help + This is soft reset on Microblaze which does jump to 0x0 address. + config SYSRESET_PSCI bool "Enable support for PSCI System Reset" depends on ARM_PSCI_FW diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile index ca533cfefa..223a0716f0 100644 --- a/drivers/sysreset/Makefile +++ b/drivers/sysreset/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_SYSRESET) += sysreset-uclass.o obj-$(CONFIG_SYSRESET_GPIO) += sysreset_gpio.o +obj-$(CONFIG_SYSRESET_MICROBLAZE) += sysreset_microblaze.o obj-$(CONFIG_SYSRESET_PSCI) += sysreset_psci.o obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o diff --git a/drivers/sysreset/sysreset_microblaze.c b/drivers/sysreset/sysreset_microblaze.c new file mode 100644 index 0000000000..514c95817f --- /dev/null +++ b/drivers/sysreset/sysreset_microblaze.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Xilinx, Inc. - Michal Simek + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <sysreset.h> +#include <linux/err.h> + +static int microblaze_sysreset_request(struct udevice *dev, + enum sysreset_t type) +{ + puts("Microblaze soft reset sysreset\n"); + __asm__ __volatile__ (" mts rmsr, r0;" \ + "bra r0"); + + return -EINPROGRESS; +} + +static struct sysreset_ops microblaze_sysreset = { + .request = microblaze_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_microblaze) = { + .id = UCLASS_SYSRESET, + .name = "mb_soft_reset", + .ops = µblaze_sysreset, +}; |