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author | Oleksij Rempel <o.rempel@pengutronix.de> | 2019-02-15 13:43:49 +0100 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-02-18 14:25:05 +0100 |
commit | 520075d88060799bb0696f31bae7c337ad69d12b (patch) | |
tree | b3c82dd5174879a1cf45278b4b8de1de25a8742b | |
parent | 8b7d51a5854f199371be60fef91d32a24e2771cc (diff) | |
download | barebox-520075d88060799bb0696f31bae7c337ad69d12b.tar.gz barebox-520075d88060799bb0696f31bae7c337ad69d12b.tar.xz |
watchdog: add (U)EFI driver
This driver is using SetWatchdogTimer() UEFI interface and was
tested on iBASE MI991AF Mini-ITX motherboard.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r-- | common/efi/efi.c | 9 | ||||
-rw-r--r-- | drivers/watchdog/Kconfig | 6 | ||||
-rw-r--r-- | drivers/watchdog/Makefile | 1 | ||||
-rw-r--r-- | drivers/watchdog/efi_wdt.c | 64 |
4 files changed, 79 insertions, 1 deletions
diff --git a/common/efi/efi.c b/common/efi/efi.c index 1f451a157e..a7b25cbbe2 100644 --- a/common/efi/efi.c +++ b/common/efi/efi.c @@ -367,8 +367,15 @@ efi_status_t efi_main(efi_handle_t image, efi_system_table_t *sys_table) static int efi_core_init(void) { - struct device_d *dev = device_alloc("efi-cs", DEVICE_ID_SINGLE); + struct device_d *dev; + int ret; + + dev = device_alloc("efi-cs", DEVICE_ID_SINGLE); + ret = platform_device_register(dev); + if (ret) + return ret; + dev = device_alloc("efi-wdt", DEVICE_ID_SINGLE); return platform_device_register(dev); } core_initcall(efi_core_init); diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 27e9f6d8b4..96e91fc2ce 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -22,6 +22,12 @@ config WATCHDOG_AR9344 help Add support for watchdog on the QCA AR9344 SoC. +config WATCHDOG_EFI + bool "Generic EFI Watchdog Driver" + depends on EFI_BOOTUP + help + Add support for the EFI watchdog. + config WATCHDOG_DAVINCI bool "TI Davinci" depends on ARCH_DAVINCI diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index faf06110a3..69189ba1f3 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_WATCHDOG) += wd_core.o obj-$(CONFIG_WATCHDOG_AR9344) += ar9344_wdt.o +obj-$(CONFIG_WATCHDOG_EFI) += efi_wdt.o obj-$(CONFIG_WATCHDOG_DAVINCI) += davinci_wdt.o obj-$(CONFIG_WATCHDOG_OMAP) += omap_wdt.o obj-$(CONFIG_WATCHDOG_MXS28) += im28wd.o diff --git a/drivers/watchdog/efi_wdt.c b/drivers/watchdog/efi_wdt.c new file mode 100644 index 0000000000..8e3e51b7a9 --- /dev/null +++ b/drivers/watchdog/efi_wdt.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2019 Oleksij Rempel <o.rempel@pengutronix.de>, Pengutronix + */ + +#include <common.h> +#include <init.h> +#include <driver.h> +#include <efi.h> +#include <efi/efi.h> +#include <watchdog.h> + +struct efi_wdt_priv { + struct watchdog wd; + struct device_d *dev; +}; + +#define to_efi_wdt(h) container_of(h, struct efi_wdt_priv, wd) + +static int efi_wdt_set_timeout(struct watchdog *wd, unsigned timeout) +{ + struct efi_wdt_priv *priv = to_efi_wdt(wd); + efi_status_t efiret; + + efiret = BS->set_watchdog_timer(timeout, 0, 0, NULL); + if (EFI_ERROR(efiret)) { + dev_err(priv->dev, "filed to set EFI watchdog: %lx\n", efiret); + return -EINVAL; + } + + return 0; +} + +static int efi_wdt_probe(struct device_d *dev) +{ + struct efi_wdt_priv *priv; + int ret; + + priv = xzalloc(sizeof(*priv)); + + priv->wd.set_timeout = efi_wdt_set_timeout; + priv->wd.hwdev = dev; + priv->dev = dev; + + dev->priv = priv; + + priv->wd.timeout_max = U32_MAX; + + ret = watchdog_register(&priv->wd); + if (ret) + goto on_error; + + return 0; + +on_error: + free(priv); + return ret; +} + +static struct driver_d efi_wdt_driver = { + .name = "efi-wdt", + .probe = efi_wdt_probe, +}; +device_platform_driver(efi_wdt_driver); |