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4d5a4efedb
- Note that the early loading is now available for AMD systems after 2024-02-22 src snapshot, 34467bd76. - Do not refer to old port names - Refer to sysutils/cpu-microcode-* so we are covered if any new CPU microcode ports are added to the tree Reviewed by: chs Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D44048
53 lines
1.7 KiB
Text
53 lines
1.7 KiB
Text
[
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{ type: install
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message: <<EOM
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This port includes an RC script, which is one of two methods to update
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the CPU microcode on a FreeBSD system.
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1. Early loading.
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This method does not use the RC script included here.
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This is the preferred method, because it ensures that any CPU features
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added or removed by a microcode update are visible to the kernel by
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applying the update before the kernel performs CPU feature detection.
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To enable updates using early loading, add the following lines to
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/boot/loader.conf:
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cpu_microcode_load="YES"
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and the appropriate one of these lines:
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cpu_microcode_name="/boot/firmware/intel-ucode.bin"
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cpu_microcode_name="/boot/firmware/amd-ucode.bin"
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The microcode update will be loaded when the system is rebooted.
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AMD systems running FreeBSD prior to 2024-02-22 snapshot
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34467bd76 only support late loading.
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2. Late loading.
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This method, which does use the RC script included here, is enabled by
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adding the following line to /etc/rc.conf:
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microcode_update_enable="YES"
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The microcode update is then applied upon reboot or when the microcode
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update service is run via:
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# service microcode_update start
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If the CPU requires a microcode update, a console message such as the
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following will appear:
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Updating CPU Microcode...
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%%DATADIR%%/m32306c3_00000022.fw: updating cpu /dev/cpuctl0 from rev 0x17 to rev 0x22... done.
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%%DATADIR%%/m32306c3_00000022.fw: updating cpu /dev/cpuctl2 from rev 0x17 to rev 0x22... done.
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%%DATADIR%%/m32306c3_00000022.fw: updating cpu /dev/cpuctl4 from rev 0x17 to rev 0x22... done.
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%%DATADIR%%/m32306c3_00000022.fw: updating cpu /dev/cpuctl6 from rev 0x17 to rev 0x22... done.
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Done.
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It is safe to enable both methods.
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EOM
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}
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]
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