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| author | Ahmad Fatoum <ahmad@a3f.at> | 2021-04-16 08:24:36 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-05-03 14:07:21 +0200 |
| commit | 263d3c2105edec00e1e3e67770eb0a870567dbc4 (patch) | |
| tree | 434e93307b0eb357e1e5833128bdfeab1e971556 /drivers/watchdog/Kconfig | |
| parent | ffdb6a435e7ed5576f37d6cea14157d6ce51e16b (diff) | |
| download | barebox-263d3c2105edec00e1e3e67770eb0a870567dbc4.tar.gz barebox-263d3c2105edec00e1e3e67770eb0a870567dbc4.tar.xz | |
watchdog: add support for Intel TCO watchdog timer
Variants of the iTCO are integrated into many Intel southbridges.
They are most often accessed via PCI. Add a driver for the variant
found in the q35 QEMU machine.
It should be straight forward to extend the itco_chipset_info array
to support more variants in future as the need arises. To test, use:
qemu-system-x86_64 -M q35 -global ICH9-LPC.noreboot=false
The last option corresponds to a pin strap option, which can't be
influenced from within the VM.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Link: https://lore.barebox.org/20210416062436.332665-5-ahmad@a3f.at
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/watchdog/Kconfig')
| -rw-r--r-- | drivers/watchdog/Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index df85a227ac..b785181c59 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -124,4 +124,21 @@ config GPIO_WATCHDOG If you say yes here you get support for watchdog device controlled through GPIO-line. +config ITCO_WDT + bool "Intel TCO Timer/Watchdog" + depends on X86 + depends on PCI + help + Hardware driver for the intel TCO timer based watchdog devices. + These drivers are included in the Intel 82801 I/O Controller + Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB + controller hub. + + The TCO (Total Cost of Ownership) timer is a watchdog timer + that will reboot the machine after its second expiration. + + On some motherboards the driver may fail to reset the chipset's + NO_REBOOT flag which prevents the watchdog from rebooting the + machine. + endif |