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Add support of secure warm-boot #2532

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merged 3 commits into from
Feb 14, 2023
Merged

Add support of secure warm-boot #2532

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b8dd8d2
[secure boot]Add support of secure warm-boot by forcing kexec to veri…
davidpil2002 Nov 29, 2022
0ef8677
[secure boot]Add invoke kernel function to avoid duplication of kexec…
davidpil2002 Feb 8, 2023
4cd2598
[secure boot]move bootctl call check inside else condtion to avoid ab…
davidpil2002 Feb 8, 2023
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21 changes: 19 additions & 2 deletions scripts/fast-reboot
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Original file line number Diff line number Diff line change
Expand Up @@ -442,9 +442,20 @@ function load_aboot_secureboot_kernel() {
swipath=$next_image kexec=true loadonly=true ENV_EXTRA_CMDLINE="$BOOT_OPTIONS" bash -
}

function invoke_kexec() {
/sbin/kexec -l "$KERNEL_IMAGE" --initrd="$INITRD" --append="$BOOT_OPTIONS" $@
}

function load_kernel() {
# Load kernel into the memory
/sbin/kexec -a -l "$KERNEL_IMAGE" --initrd="$INITRD" --append="$BOOT_OPTIONS"
invoke_kexec -a
}

function load_kernel_secure() {
# Load kernel into the memory secure
# -s flag is for enforcing the new load kernel(vmlinuz) to be signed and verify.
# not using -a flag, this flag can fallback to an old kexec load that do not support Secure Boot verification
invoke_kexec -s
}

function unload_kernel()
Expand Down Expand Up @@ -601,7 +612,13 @@ fi
if is_secureboot && grep -q aboot_machine= /host/machine.conf; then
load_aboot_secureboot_kernel
else
load_kernel
# check if secure boot is enable in UEFI
SECURE_UPGRADE_ENABLED=$(bootctl status 2>/dev/null | grep -c "Secure Boot: enabled")
if [ ${SECURE_UPGRADE_ENABLED} -eq 1 ]; then
load_kernel_secure
else
load_kernel
fi
fi

init_warm_reboot_states
Expand Down