commit: f1009fdc9d720bde0b2332179a44a0be51dcd9c6
Author: Rick Farina (Zero_Chaos) <zerochaos <AT> gentoo <DOT> org>
AuthorDate: Thu Oct 27 04:36:31 2016 +0000
Commit: Richard Farina <zerochaos <AT> gentoo <DOT> org>
CommitDate: Thu Oct 27 04:36:31 2016 +0000
URL: https://gitweb.gentoo.org/proj/genkernel.git/commit/?id=f1009fdc
initial early-microcode support
automatically detect if it is possible to prepend cpu ucode to the
initramfs, and then, you know, do it. Left a few blanks because it's
super later and I'm tired of working on this. I can continue if no one
beats me to it.
gen_funcs.sh | 2 +-
gen_initramfs.sh | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/gen_funcs.sh b/gen_funcs.sh
index 7e974de..1bdaa7b 100755
--- a/gen_funcs.sh
+++ b/gen_funcs.sh
@@ -262,7 +262,7 @@ then
for i in ${TMPDIR_CONTENTS}
do
print_info 1 " >> removing ${i}"
- rm ${TMPDIR}/${i}
+ rm -r ${TMPDIR}/${i}
done
fi
}
diff --git a/gen_initramfs.sh b/gen_initramfs.sh
index ea4a771..fb74929 100755
--- a/gen_initramfs.sh
+++ b/gen_initramfs.sh
@@ -1040,6 +1040,40 @@ create_initramfs() {
print_info 1 " >> Not compressing cpio
data ..."
fi
fi
+ ## To early load microcode we need to follow some pretty
specific steps
+ ## mostly laid out in
linux/Documentation/x86/early-microcode.txt
+ #if CONFIG_MICROCODE=y; then
+ print_info 1 "early-microcode: >> Preparing..."
+ UCODEDIR="${TMPDIR}/ucode_tmp/kernel/x86/microcode/"
+ mkdir -p "${UCODEDIR}"
+ #if CONFIG_MICROCODE_INTEL=y; then
+ if [ "$(ls -A /lib/firmware/intel-ucode)" ];
then
+ print_info 1 " >>
adding GenuineIntel.bin"
+ cat /lib/firmware/intel-ucode/* >
"${UCODEDIR}/GenuineIntel.bin" || gen_die "Failed to concat intel cpu ucode"
+ #else
+ #print_info 1 "CONFIG_MICROCODE_INTEL=y
set but no ucode available. Please install
sys-firmware/intel-microcode[split-ucode]"
+ fi
+ #fi
+ #if CONFIG_MICROCODE_AMD=y; then
+ if [ "$(ls -A /lib/firmware/amd-ucode)" ]; then
+ print_info 1 " >>
adding AuthenticAMD.bin"
+ cat /lib/firmware/amd-ucode/*.bin >
"${UCODEDIR}/AuthenticAMD.bin" || gen_dir "Failed to concat amd cpu ucode"
+ #else
+ #print_info 1 "CONFIG_MICROCODE_AMD=y
set but no ucode available. Please install sys-firmware/linux-firmware"
+ fi
+ #fi
+ if [ "$(ls -A ${UCODE})" ]; then
+ print_info 1 "early-microcode: >> Creating
cpio..."
+ pushd "${TMPDIR}/ucode_tmp" > /dev/null
+ find . | cpio -o -H newc > ../ucode.cpio ||
gen_die "Failed to create cpu microcode cpio"
+ popd > /dev/null
+ print_info 1 "early-microcode: >> Prepending
early-microcode to initramfs"
+ cat "${TMPDIR}/ucode.cpio" "${CPIO}" >
"${CPIO}.early-microcode" || gen_die "Failed to prepend early-microcode to
initramfs"
+ mv -f "${CPIO}.early-microcode" "${CPIO}" ||
gen_die "Rename failed"
+ #else
+ #print_info 1 "CONFIG_MICROCODE=y is set but no
microcode found"
+ fi
+ #fi
if isTrue "${WRAP_INITRD}"
then
local mkimage_cmd=$(type -p mkimage)
