Set/Get Cached BIOS Upgrade Mode

Change History

openUBMC Version	Revision Date	Description
25.06	2025/06/26	Initial draft: add command details

Obtains or sets the BIOS upgrade mode that has been cached.

BasicSetting

Byte	Data Field
NetFn	30h
CMD	92h
1:3	Manufacturer ID, LS Byte first. The length is fixed to three bytes. For example, if the vendor ID is 2011 and the corresponding hexadecimal value is 0x0007DB, the first byte is DBh, the second byte is 07h, and the third byte is 00h.
4	Sub command, sub command=43h
5	Actions of the Cached BIOS Upgrade Mode command 0x00: set 0x01: query
6	Cached BIOS Upgrade Mode switch, valid when Byte5 is 0x00 0x00 (default): The cached BIOS takes effect after the OS is restarted or powered off. 0x01: The cached BIOS takes effect only after the OS is powered off. 0x02: The cached BIOS does not take effect after the OS is restarted or powered off.

Byte	Data Field
1	Completion Code d6- indicates that the command is not registered with the BMC and is not supported.
2:4	Manufacturer ID, LS Byte first. The length is fixed to three bytes. For example, if the vendor ID is 2011 and the corresponding hexadecimal value is 0x0007DB, the first byte is DBh, the second byte is 07h, and the third byte is 00h. This field exists when the request byte 5 is 0x01.
5	Corresponding switch status. This parameter exists when the requested Byte5 is 0x01, and the result is returned. 0x00 (default): The cached BIOS takes effect after the OS is restarted or powered off. 0x01: The cached BIOS takes effect only after the OS is powered off. 0x02: The cached BIOS does not take effect after the OS is restarted or powered off.

Request:

bash

ipmicmd -k "0f 00 30 92 db 07 00 43 01 01" smi 0

Response:

text

0f 31 00 92 00 db 07 00 00