[arch-releng] [PATCH 1/1] concatenate initramfs images for early microcode update
Gerardo Exequiel Pozzi
vmlinuz386 at gmail.com
Wed Oct 29 15:05:58 UTC 2014
On 10/29/2014 11:56 AM, Christian Hesse wrote:
> Gerardo Exequiel Pozzi <vmlinuz386 at gmail.com> on Wed, 2014/10/29 11:35:
>> On 10/29/2014 11:02 AM, list at eworm.de wrote:
>>> From: Christian Hesse <mail at eworm.de>
>>>
>>> https://www.kernel.org/doc/Documentation/x86/early-microcode.txt
>>> ---
>>> configs/releng/build.sh | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/configs/releng/build.sh b/configs/releng/build.sh
>>> index 07ff911..8b6beee 100755
>>> --- a/configs/releng/build.sh
>>> +++ b/configs/releng/build.sh
>>> @@ -90,7 +90,7 @@ make_customize_airootfs() {
>>> # Prepare kernel/initramfs ${install_dir}/boot/
>>> make_boot() {
>>> mkdir -p ${work_dir}/iso/${install_dir}/boot/${arch}
>>> - cp ${work_dir}/${arch}/airootfs/boot/archiso.img
>>> ${work_dir}/iso/${install_dir}/boot/${arch}/archiso.img
>>> + cat ${work_dir}/${arch}/airootfs/boot/intel-ucode.img
>>> ${work_dir}/${arch}/airootfs/boot/archiso.img >
>>> ${work_dir}/iso/${install_dir}/boot/${arch}/archiso.img
>>
>> This does not look good. archiso.img is compressed, while
>> intel-ucode.img is uncompressed.
>
> Both of these are cpio archives. So what's wrong?
>
> # file initramfs-linux.img intel-ucode.img
> initramfs-linux.img: ASCII cpio archive (SVR4 with no CRC)
> intel-ucode.img: ASCII cpio archive (SVR4 with no CRC)
Looks like you are you working with uncompressed initcpio images (ie you
made a change to the default mkinitcpio.conf provided by archiso.)
If prefer this way:
--- archiso_intel_ucode ---
#!/bin/bash
build() {
cd /tmp
bsdcpio -i -d < /boot/intel-ucode.bin
add_file /tmp/kernel/x86/microcode/GenuineIntel.bin
/kernel/x86/microcode/GenuineIntel.bin
}
help() {
cat <<HELPEOF
This hook adds intel microcode updates to the early boot stage.
HELPEOF
}
# vim: set ft=sh ts=4 sw=4 et:
----------------------------
>
>>> cp ${work_dir}/${arch}/airootfs/boot/vmlinuz-linux
>>> ${work_dir}/iso/${install_dir}/boot/${arch}/vmlinuz }
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