KumiSystems/openwrtv3
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

x86: add intel microcode entries to grub config

Browse source 
Create initrd enries for x86 images, that'll load intel microcode as
early as possible. To achieve that the test module for grub is enabled
which provides shell-like conditionals. Also restrict the late load of
microcode to AMD processors.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
This commit is contained in:
Tomasz Maciej Nowak 2018-11-20 17:20:43 +01:00 committed by John Crispin
parent ad83fde30d
commit 546fced2a2
4 changed files with 12 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
target/linux/x86/base-files/lib/preinit/02_load_x86_ucode
View file

@ -2,8 +2,10 @@
# Copyright (C) 2018 OpenWrt.org # Copyright (C) 2018 OpenWrt.org
do_load_x86_ucode() { do_load_x86_ucode() {
if [ -e "/sys/devices/system/cpu/microcode/reload" ]; then if grep -q AuthenticAMD /proc/cpuinfo; then
echo 1 > /sys/devices/system/cpu/microcode/reload if [ -e "/sys/devices/system/cpu/microcode/reload" ]; then
echo 1 > /sys/devices/system/cpu/microcode/reload
fi
fi fi
} }

4
target/linux/x86/image/Makefile
View file

@ -9,8 +9,8 @@ include $(INCLUDE_DIR)/image.mk
export PATH=$(TARGET_PATH):/sbin export PATH=$(TARGET_PATH):/sbin
GRUB2_MODULES = biosdisk boot chain configfile ext2 linux ls part_msdos reboot serial vga GRUB2_MODULES = biosdisk boot chain configfile ext2 linux ls part_msdos reboot serial test vga
GRUB2_MODULES_ISO = biosdisk boot chain configfile iso9660 linux ls part_msdos reboot serial vga GRUB2_MODULES_ISO = biosdisk boot chain configfile iso9660 linux ls part_msdos reboot serial test vga
GRUB_TERMINALS = GRUB_TERMINALS =
GRUB_SERIAL_CONFIG = GRUB_SERIAL_CONFIG =
GRUB_TERMINAL_CONFIG = GRUB_TERMINAL_CONFIG =

3
target/linux/x86/image/grub-iso.cfg
View file

@ -7,4 +7,7 @@ set root='(cd)'
menuentry "@TITLE@" { menuentry "@TITLE@" {
linux /boot/vmlinuz @CMDLINE@ noinitrd linux /boot/vmlinuz @CMDLINE@ noinitrd
if [ -s /boot/intel-ucode.img ]; then
initrd /boot/intel-ucode.img
fi
} }

3
target/linux/x86/image/grub.cfg
View file

@ -7,6 +7,9 @@ set root='(@ROOT@)'
menuentry "@TITLE@" { menuentry "@TITLE@" {
linux /boot/vmlinuz @CMDLINE@ noinitrd linux /boot/vmlinuz @CMDLINE@ noinitrd
if [ -s /boot/intel-ucode.img ]; then
initrd /boot/intel-ucode.img
fi
} }
menuentry "@TITLE@ (failsafe)" { menuentry "@TITLE@ (failsafe)" {
linux /boot/vmlinuz failsafe=true @CMDLINE@ noinitrd linux /boot/vmlinuz failsafe=true @CMDLINE@ noinitrd