Add support for secure boot without shim #92
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Disabling inside lockdown and shim_lock verifieirs with patch is unneeded, as there is already a `--disable-shim-lock`[1] option, which should be used instead. [1] https://www.gnu.org/software/grub/manual/grub/html_node/UEFI-secure-boot-and-shim.html Signed-off-by: Piotr Łobacz <[email protected]>
In `meta-signing-key/classes/user-key-store.bbclass` file, there is already an implementation of sb_sign() function with support for both scerarions: - bootloader is verified by shim_cert.crt - shim is not used, and DB.crt is used to verify bootloader directly but when building with MOK_SB ?= "0", grub is being build as `grub(ia32/x64).efi` and with shim_lock support enabled. Disabling shim_lock for running secure boot without shim fixes the issue: error: ../../grub-core/kern/efi/sb.c:180:shim_lock protocol not found. during boot. Disabling renaming of grub efi into `grubx64.efi` leaves it, as it is in EFI_BOOT_IMAGE variable, set in `yocto/openembedded-core/meta/conf/image-uefi.conf`, as this will be our first efi boot file. Signed-off-by: Piotr Łobacz <[email protected]>
Packages like shim, seloader etc. are currently being installed always, as packages listed in `packagegroup-efi-secure-boot.bb`. Instead of installing them for each scheme, they should be installed conditionally, as run dependencies of grub-efi package. Signed-off-by: Piotr Łobacz <[email protected]>
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This pull request fixes some minor issues with additional changes like: