mirror of
https://github.com/AsahiLinux/u-boot
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10107efedd
In order to test that U-Boot actually maintains the watchdog device(s)
during long-running busy-loops, such as those where we wait for the
user to stop autoboot, we need a watchdog device that actually does
something during those loops; we cannot test that behaviour via the DM
test framework.
So introduce a relatively simple watchdog device which is simply based
on calling the host OS' alarm() function; that has the nice property
that a new call to alarm() simply sets a new deadline, and alarm(0)
cancels any existing alarm. These properties are precisely what we
need to implement start/reset/stop. We install our own handler so that
we get a known message printed if and when the watchdog fires, and by
just invoking that handler directly, we get expire_now for free.
The actual calls to the various OS functions (alarm, signal, raise)
need to be done in os.c, and since the driver code cannot get access
to the values of SIGALRM or SIG_DFL (that would require including a
host header, and that's only os.c which can do that), we cannot simply
do trivial wrappers for signal() and raise(), but instead create
specialized functions just for use by this driver.
Apart from enabling this driver for sandbox{,64}_defconfig, also
enable the wdt command which was useful for hand-testing this new
driver (especially with running u-boot under strace).
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
362 lines
10 KiB
Text
362 lines
10 KiB
Text
menu "Watchdog Timer Support"
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config WATCHDOG
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bool "Enable U-Boot watchdog reset"
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depends on !HW_WATCHDOG
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select CYCLIC
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help
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This option enables U-Boot watchdog support where U-Boot is using
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watchdog_reset function to service watchdog device in U-Boot. Enable
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this option if you want to service enabled watchdog by U-Boot. Disable
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this option if you want U-Boot to start watchdog but never service it.
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config WATCHDOG_AUTOSTART
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bool "Automatically start watchdog timer"
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depends on WDT
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default n if ARCH_SUNXI
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default y
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help
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Automatically start watchdog timer and start servicing it during
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init phase. Enabled by default. Disable this option if you want
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to compile U-Boot with CONFIG_WDT support but do not want to
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activate watchdog, like when CONFIG_WDT option is disabled. You
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would be able to start watchdog manually by 'wdt' command. Useful
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when you want to have support for 'wdt' command but do not want
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to have watchdog enabled by default.
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config WATCHDOG_TIMEOUT_MSECS
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int "Watchdog timeout in msec"
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default 128000 if ARCH_MX31 || ARCH_MX5 || ARCH_MX6
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default 128000 if ARCH_MX7 || ARCH_VF610
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default 30000 if ARCH_SOCFPGA
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default 16000 if ARCH_SUNXI
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default 60000
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help
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Watchdog timeout in msec
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config HW_WATCHDOG
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bool
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config IMX_WATCHDOG
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bool "Enable Watchdog Timer support for IMX and LSCH2 of NXP"
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select HW_WATCHDOG if !WDT
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help
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Select this to enable the IMX and LSCH2 of Layerscape watchdog
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driver.
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config WATCHDOG_RESET_DISABLE
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bool "Disable reset watchdog"
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depends on IMX_WATCHDOG
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help
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Disable reset watchdog, which can let WATCHDOG_RESET invalid, so
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that the watchdog will not be fed in u-boot.
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config OMAP_WATCHDOG
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bool "TI OMAP watchdog driver"
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depends on ARCH_OMAP2PLUS
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select HW_WATCHDOG
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help
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Say Y here to enable the OMAP3+ watchdog driver.
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config ULP_WATCHDOG
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bool "i.MX7ULP watchdog"
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help
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Say Y here to enable i.MX7ULP watchdog driver.
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config DESIGNWARE_WATCHDOG
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bool "Designware watchdog timer support"
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depends on WDT
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default y if ROCKCHIP_RK3399
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help
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Enable this to support Designware Watchdog Timer IP, present e.g.
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on Altera SoCFPGA SoCs.
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config WDT
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bool "Enable driver model for watchdog timer drivers"
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depends on DM
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imply WATCHDOG
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select CYCLIC
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help
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Enable driver model for watchdog timer. At the moment the API
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is very simple and only supports four operations:
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start, stop, reset and expire_now (expire immediately).
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What exactly happens when the timer expires is up to a particular
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device/driver.
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config WDT_APPLE
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bool "Apple watchdog timer support"
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depends on WDT
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default y if ARCH_APPLE
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help
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Enable support for the watchdog timer on Apple SoCs.
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The watchdog will perform a full SoC reset resulting in a
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reboot of the entire system.
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config WDT_ARMADA_37XX
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bool "Marvell Armada 37xx watchdog timer support"
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depends on WDT && ARMADA_3700
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help
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Enable this to support Watchdog Timer on Marvell Armada 37xx SoC.
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There are 4 possible clocks which can be used on these SoCs. This
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driver uses the second clock (ID 1), assuming that so will also
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Linux's driver.
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config WDT_ASPEED
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bool "Aspeed ast2400/ast2500 watchdog timer support"
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depends on WDT
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default y if ARCH_ASPEED
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help
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Select this to enable watchdog timer for Aspeed ast2500/ast2400 devices.
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The watchdog timer is stopped when initialized. It performs reset, either
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full SoC reset or CPU or just some peripherals, based on the flags.
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It currently does not support Boot Flash Addressing Mode Detection or
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Second Boot.
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config WDT_AST2600
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bool "Aspeed AST2600 watchdog timer support"
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depends on WDT
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default y if ASPEED_AST2600
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help
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Select this to enable watchdog timer for Aspeed ast2500/ast2400 devices.
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The watchdog timer is stopped when initialized. It performs reset, either
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full SoC reset or CPU or just some peripherals, based on the flags.
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config WDT_AT91
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bool "AT91 watchdog timer support"
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depends on WDT
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help
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Select this to enable Microchip watchdog timer, which can be found on
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some AT91 devices.
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config WDT_BCM6345
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bool "BCM6345 watchdog timer support"
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depends on WDT && (ARCH_BMIPS || ARCH_BCM68360 || \
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ARCH_BCM6858 || ARCH_BCM63158 || \
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ARCH_BCM6753)
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help
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Select this to enable watchdog timer for BCM6345 SoCs.
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The watchdog timer is stopped when initialized.
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It performs full SoC reset.
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config WDT_BOOKE
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bool "PowerPC Book-E watchdog driver"
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depends on WDT && MPC85xx
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help
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Watchdog driver for PowerPC Book-E chips, such as the Freescale
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MPC85xx SOCs and the IBM PowerPC 440.
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config WDT_CDNS
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bool "Cadence watchdog timer support"
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depends on WDT
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imply WATCHDOG
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help
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Select this to enable Cadence watchdog timer, which can be found on some
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Xilinx Microzed Platform.
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config WDT_CORTINA
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bool "Cortina Access CAxxxx watchdog timer support"
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depends on WDT
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help
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Cortina Access CAxxxx watchdog timer support.
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This driver support all CPU ISAs supported by Cortina
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Access CAxxxx SoCs.
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config WDT_GPIO
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bool "External gpio watchdog support"
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depends on WDT
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depends on DM_GPIO
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help
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Support for external watchdog fed by toggling a gpio. See
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doc/device-tree-bindings/watchdog/gpio-wdt.txt for
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information on how to describe the watchdog in device tree.
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config WDT_MAX6370
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bool "MAX6370 watchdog timer support"
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depends on WDT
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select DM_GPIO
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help
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Select this to enable max6370 watchdog timer.
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config WDT_MESON_GXBB
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bool "Amlogic watchdog timer support"
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depends on WDT
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help
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Select this to enable Meson watchdog timer,
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which can be found on some Amlogic platforms.
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config WDT_MPC8xx
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bool "MPC8xx watchdog timer support"
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depends on WDT && MPC8xx
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select HW_WATCHDOG
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help
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Select this to enable mpc8xx watchdog timer
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config WDT_MT7620
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bool "MediaTek MT7620 watchdog timer support"
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depends on WDT && SOC_MT7620
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help
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Select this to enable watchdog timer on MediaTek MT7620 and earlier
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SoC chips.
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config WDT_MT7621
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bool "MediaTek MT7621 watchdog timer support"
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depends on WDT && (SOC_MT7621 || SOC_MT7628)
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help
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Select this to enable Ralink / Mediatek watchdog timer,
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which can be found on some MediaTek chips.
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config WDT_MTK
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bool "MediaTek watchdog timer support"
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depends on WDT && ARCH_MEDIATEK
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help
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Select this to enable watchdog timer for MediaTek SoCs.
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The watchdog timer is stopped when initialized.
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It performs full SoC reset.
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config WDT_NPCM
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bool "Nuvoton watchdog timer support"
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depends on WDT && ARCH_NPCM
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help
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This enables Nuvoton npcm7xx/npcm8xx watchdog timer driver,
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The watchdog timer is stopped when initialized.
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It performs full SoC reset.
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config WDT_OCTEONTX
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bool "Octeon core watchdog support"
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depends on WDT && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
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default y
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imply WATCHDOG
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help
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This enables the Octeon watchdog driver, which can be found on
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various Octeon parts such as Octeon II/III and OcteonTX/TX2.
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config WDT_OMAP3
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bool "TI OMAP watchdog timer support"
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depends on WDT && ARCH_OMAP2PLUS
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default y if AM33XX
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help
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This enables OMAP3+ watchdog timer driver, which can be
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found on some TI chipsets and inline with driver model.
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config WDT_ORION
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bool "Orion watchdog timer support"
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depends on WDT
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select CLK
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help
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Select this to enable Orion watchdog timer, which can be found on some
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Marvell Armada chips.
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config WDT_K3_RTI
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bool "Texas Instruments K3 RTI watchdog"
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depends on WDT && ARCH_K3
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help
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Say Y here if you want to include support for the K3 watchdog
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timer (RTI module) available in the K3 generation of processors.
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if WDT_K3_RTI
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config WDT_K3_RTI_LOAD_FW
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bool "Load watchdog firmware"
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depends on REMOTEPROC
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help
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Automatically load the specified firmware image into the MCU R5F
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core 0. On the AM65x, this firmware is supposed to handle the expiry
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of the watchdog timer, typically by resetting the system.
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config WDT_K3_RTI_FW_FILE
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string "Watchdog firmware image file"
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default "k3-rti-wdt.fw"
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depends on WDT_K3_RTI_LOAD_FW
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help
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Firmware image to be embedded into U-Boot and loaded on watchdog
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start.
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endif
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config WDT_SANDBOX
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bool "Enable Watchdog Timer support for Sandbox"
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depends on SANDBOX && WDT
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help
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Enable Watchdog Timer support in Sandbox. This is a dummy device that
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can be probed and supports all of the methods of WDT, but does not
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really do anything.
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config WDT_ALARM_SANDBOX
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bool "Enable SIGALRM-based Watchdog Timer support for Sandbox"
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depends on SANDBOX && WDT
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help
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Enable support for a SIGALRM-based watchdog timer in Sandbox. This is
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a watchdog device based on the host OS' alarm() function, which will
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kill the sandbox with SIGALRM unless properly maintained.
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config WDT_SBSA
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bool "SBSA watchdog timer support"
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depends on WDT
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help
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Select this to enable SBSA watchdog timer.
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This driver can operate ARM SBSA Generic Watchdog as a single stage.
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In the single stage mode, when the timeout is reached, your system
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will be reset by WS1. The first signal (WS0) is ignored.
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config WDT_SL28CPLD
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bool "sl28cpld watchdog timer support"
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depends on WDT && SL28CPLD
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help
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Enable support for the watchdog timer in the Kontron sl28cpld
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management controller.
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config WDT_SP805
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bool "SP805 watchdog timer support"
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depends on WDT
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help
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Select this to enable SP805 watchdog timer, which can be found on some
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nxp layerscape chips.
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config WDT_STM32MP
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bool "IWDG watchdog driver for STM32 MP's family"
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depends on WDT
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imply WATCHDOG
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help
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Enable the STM32 watchdog (IWDG) driver. Enable support to
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configure STM32's on-SoC watchdog.
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config WDT_SUNXI
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bool "Allwinner sunxi watchdog timer support"
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depends on WDT && ARCH_SUNXI
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default y
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help
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Enable support for the watchdog timer in Allwinner sunxi SoCs.
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config XILINX_TB_WATCHDOG
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bool "Xilinx Axi watchdog timer support"
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depends on WDT
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imply WATCHDOG
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help
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Select this to enable Xilinx Axi watchdog timer, which can be found on some
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Xilinx Microblaze Platforms.
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config WDT_XILINX
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bool "Xilinx window watchdog timer support"
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depends on WDT && ARCH_VERSAL
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select REGMAP
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imply WATCHDOG
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help
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Select this to enable Xilinx window watchdog timer, which can be found on
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Xilinx Versal Platforms.
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config WDT_TANGIER
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bool "Intel Tangier watchdog timer support"
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depends on WDT && INTEL_MID
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help
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This enables support for watchdog controller available on
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Intel Tangier SoC. If you're using a board with Intel Tangier
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SoC, say Y here.
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config SPL_WDT
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bool "Enable driver model for watchdog timer drivers in SPL"
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depends on SPL_DM
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help
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Enable driver model for watchdog timer in SPL.
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This is similar to CONFIG_WDT in U-Boot.
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endmenu
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