Messages in this thread | | | From | Paul Menzel <> | Subject | Early loading of microcode updates with all firmware | Date | Fri, 30 Jun 2017 12:44:43 +0200 |
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Dear Borislav,
Thank you for recently updating the document *Early load microcode* [1].
My goal is to include all microcode updates from AMD and Intel, as the image is supposed to run on several systems.
Therefore, I included the files in the initramfs image, under `/lib/firmware`, and selected the microcode related Kconfig options.
``` $ grep MICROCODE /boot/config-4.11.7.mx64.161 CONFIG_MICROCODE=y CONFIG_MICROCODE_INTEL=y CONFIG_MICROCODE_AMD=y CONFIG_MICROCODE_OLD_INTERFACE=y ```
But, the microcode is not updated. For example, I have to manually run the command below.
``` $ echo 1 | sudo tee /sys/devices/system/cpu/microcode/reload ```
Reading the document, that method is not explicitly mentioned there, so I guess it’s not supported.
So two question. If I want to add it to the initramfs image, the document says to prepend the updates. But I am unclear how to create `microcode.bin` to contain all the files in `/lib/firmware/intel-ucode/`, and then the ones for AMD devices. Do I just concatenate both?
Regarding the section *Builtin microcode*, it would be quite cumbersome to list all the microcode files. It looks like wildcards like `*` are not supported. At least the build breaks, if `intel-ucode/*` is used in the prompt.
Kind regards,
Paul
[1] https://www.kernel.org/doc/Documentation/x86/early-microcode.txt
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