3 comments:
Patch Set #6, Line 11: This is to let the payload (LinuxBoot) do some handling.
What kind of handling?
In payload,
u-root reads and checks CMOS clear and valid bits via IPMI OEM command,
If bits both are set to 1, u-root add a SEL and sends IPMI CMOS clear command to BMC then reboot.
Patch Set #6, Line 13: Tested on OCP Delta Lake
How is this tested? How do you simulate RTC failure?
Remove RTC battery.
File src/mainboard/ocp/deltalake/ipmi.h:
Patch Set #6, Line 42: uint8_t boot_dev4;
Regarding boot order, how does the difference between systemboot and UEFI BDS affect it? What is boo […]
It’s an OEM defined IPMI command structure,
Byte boot_mode includes CMOS clear and boot flag valid bits,
they are OEM defined and are used to detect if CMOS clear request has been set or not,
the boot_dev bytes are part of the command structure,
they represent boot order from boot_dev0 to boot_dev4, but in this change we do not touch them.
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