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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019
 
 

ucodeadm(8)

Name

ucodeadm - update processor microcode

Synopsis

/usr/sbin/ucodeadm -v
/usr/sbin/ucodeadm -umicrocode-text-file
/usr/sbin/ucodeadm -i [-R path] microcode-text-file

Description

The ucodeadm utility can be used to report running microcode revision on the processors, update microcode, or install microcode on the target system to be used during the boot process.

The microcode-text-file can be obtained from processor vendors.

Options

–v

Report microcode revision.

–u microcode-text-file

Update microcode on all cross-call interrupt ready processors.

–i microcode-text-file

Install microcode files on target system to be used during the next boot cycle. The text file name must have the vendor name prefix, such as “intel” or “amd”.

By default the microcode files will be installed at:

 /platform/i86pc/ucode/$VENDORSTR/

where VENDORSTR is either “GenuineIntel” or “AuthenticAMD”.

–R alternate path

Install microcode path in the alternate path.

Examples

Example 1 Reporting the Microcode Revision

The following example displays the microcode revision that is currently running:

# ucodeadm -v
Example 2 Updating the Processor Microcode

The following example updates the processor microcode to intel-ucode.txt:

# ucodeadm -u intel-ucode.txt
Example 3 Installing the Microcode on the Target System

The following example installs the microcode on the target system, /export/ucode-path:

# ucodeadm -i -R /export/ucode-path intel-ucode.txt

If an alternate path is used when installing the microcode on the target system, the installed microcode file is not used on the next boot cycle.

Exit Status

The following exit values are returned:

0

Successful completion.

>0

An error occurred.

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
system/core-os
Interface Stability
Committed

See Also

attributes(7), psradm(8), psrinfo(8)