diff --git a/meta-arm/classes/sbsign.bbclass b/meta-arm/classes/sbsign.bbclass new file mode 100644 index 00000000..551b951d --- /dev/null +++ b/meta-arm/classes/sbsign.bbclass @@ -0,0 +1,31 @@ +# Sign binaries for UEFI Secure Boot +# +# Usage in recipes: +# +# Set binary to sign per recipe: +# SBSIGN_TARGET_BINARY = "${B}/binary_to_sign" +# +# Then call do_sbsign() in correct stage of the build +# do_compile:append() { +# do_sbsign +# } + +DEPENDS += 'gen-sbkeys' +DEPENDS += "sbsigntool-native" + +SBSIGN_KEY = "${SBSIGN_KEYS_DIR}/db.key" +SBSIGN_CERT = "${SBSIGN_KEYS_DIR}/db.crt" +SBSIGN_TARGET_BINARY ?= "binary_to_sign" + +# Not adding as task since recipes may need to sign binaries at different +# stages. Instead they can call this function when needed by calling this function +do_sbsign() { + bbnote "Signing ${PN} binary ${SBSIGN_TARGET_BINARY} with ${SBSIGN_KEY} and ${SBSIGN_CERT}" + ${STAGING_BINDIR_NATIVE}/sbsign \ + --key "${SBSIGN_KEY}" \ + --cert "${SBSIGN_CERT}" \ + --output "${SBSIGN_TARGET_BINARY}.signed" \ + "${SBSIGN_TARGET_BINARY}" + cp "${SBSIGN_TARGET_BINARY}" "${SBSIGN_TARGET_BINARY}.unsigned" + cp "${SBSIGN_TARGET_BINARY}.signed" "${SBSIGN_TARGET_BINARY}" +} diff --git a/meta-arm/recipes-bsp/u-boot/u-boot-uefi-secureboot.inc b/meta-arm/recipes-bsp/u-boot/u-boot-uefi-secureboot.inc new file mode 100644 index 00000000..e58035a9 --- /dev/null +++ b/meta-arm/recipes-bsp/u-boot/u-boot-uefi-secureboot.inc @@ -0,0 +1,17 @@ +FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:" + +SRC_URI += "file://uefi-secureboot.cfg" + +inherit sbsign + +DEPENDS += 'python3-pyopenssl-native' + +do_compile:prepend() { + export CRYPTOGRAPHY_OPENSSL_NO_LEGACY=1 + + "${S}"/tools/efivar.py set -i "${S}"/ubootefi.var -n pk -d "${SBSIGN_KEYS_DIR}"/PK.esl -t file + "${S}"/tools/efivar.py set -i "${S}"/ubootefi.var -n kek -d "${SBSIGN_KEYS_DIR}"/KEK.esl -t file + "${S}"/tools/efivar.py set -i "${S}"/ubootefi.var -n db -d "${SBSIGN_KEYS_DIR}"/db.esl -t file + "${S}"/tools/efivar.py set -i "${S}"/ubootefi.var -n dbx -d "${SBSIGN_KEYS_DIR}"/dbx.esl -t file + "${S}"/tools/efivar.py print -i "${S}"/ubootefi.var +} diff --git a/meta-arm/recipes-bsp/u-boot/u-boot/uefi-secureboot.cfg b/meta-arm/recipes-bsp/u-boot/u-boot/uefi-secureboot.cfg new file mode 100644 index 00000000..acdcfddd --- /dev/null +++ b/meta-arm/recipes-bsp/u-boot/u-boot/uefi-secureboot.cfg @@ -0,0 +1,10 @@ +CONFIG_CMD_BOOTMENU=y +CONFIG_USE_BOOTCOMMAND=y +CONFIG_BOOTCOMMAND="bootmenu" +CONFIG_USE_PREBOOT=y +CONFIG_EFI_VAR_BUF_SIZE=65536 +CONFIG_FIT_SIGNATURE=y +CONFIG_EFI_SECURE_BOOT=y +CONFIG_EFI_VARIABLES_PRESEED=y +CONFIG_PREBOOT="setenv bootmenu_0 UEFI Boot Manager=bootefi bootmgr; setenv bootmenu_1 UEFI Maintenance Menu=eficonfig" +CONFIG_PREBOOT_DEFINED=y diff --git a/meta-arm/recipes-bsp/u-boot/u-boot_%.bbappend b/meta-arm/recipes-bsp/u-boot/u-boot_%.bbappend index 0683a783..8542ccfc 100644 --- a/meta-arm/recipes-bsp/u-boot/u-boot_%.bbappend +++ b/meta-arm/recipes-bsp/u-boot/u-boot_%.bbappend @@ -2,3 +2,5 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:" SRC_URI:append:qemuarm64-secureboot = " file://qemuarm64.cfg" SRC_URI:append:qemuarm-secureboot = " file://qemuarm.cfg" + +require ${@bb.utils.contains('MACHINE_FEATURES', 'uefi-secureboot', 'u-boot-uefi-secureboot.inc', '', d)} diff --git a/meta-arm/recipes-core/systemd/systemd-boot-uefi-secureboot.inc b/meta-arm/recipes-core/systemd/systemd-boot-uefi-secureboot.inc new file mode 100644 index 00000000..84196a68 --- /dev/null +++ b/meta-arm/recipes-core/systemd/systemd-boot-uefi-secureboot.inc @@ -0,0 +1,7 @@ +inherit sbsign + +SBSIGN_TARGET_BINARY = "${B}/src/boot/efi/systemd-boot${EFI_ARCH}.efi" + +do_compile:append() { + do_sbsign +} diff --git a/meta-arm/recipes-core/systemd/systemd-boot_%.bbappend b/meta-arm/recipes-core/systemd/systemd-boot_%.bbappend new file mode 100644 index 00000000..9850bbf9 --- /dev/null +++ b/meta-arm/recipes-core/systemd/systemd-boot_%.bbappend @@ -0,0 +1 @@ +require ${@bb.utils.contains('MACHINE_FEATURES', 'uefi-secureboot', 'systemd-boot-uefi-secureboot.inc', '', d)} diff --git a/meta-arm/recipes-core/systemd/systemd-efi.inc b/meta-arm/recipes-core/systemd/systemd-efi.inc new file mode 100644 index 00000000..5572e51a --- /dev/null +++ b/meta-arm/recipes-core/systemd/systemd-efi.inc @@ -0,0 +1 @@ +PACKAGECONFIG:append = " efi" diff --git a/meta-arm/recipes-core/systemd/systemd_%.bbappend b/meta-arm/recipes-core/systemd/systemd_%.bbappend new file mode 100644 index 00000000..660358c2 --- /dev/null +++ b/meta-arm/recipes-core/systemd/systemd_%.bbappend @@ -0,0 +1 @@ +require ${@bb.utils.contains('MACHINE_FEATURES', 'efi', 'systemd-efi.inc', '', d)} diff --git a/meta-arm/recipes-kernel/linux/linux-yocto%.bbappend b/meta-arm/recipes-kernel/linux/linux-yocto%.bbappend index a287d0e1..71e643a9 100644 --- a/meta-arm/recipes-kernel/linux/linux-yocto%.bbappend +++ b/meta-arm/recipes-kernel/linux/linux-yocto%.bbappend @@ -25,3 +25,5 @@ SRC_URI:append:qemuarm = " \ FFA_TRANSPORT_INCLUDE = "${@bb.utils.contains('MACHINE_FEATURES', 'arm-ffa', 'arm-ffa-transport.inc', '' , d)}" require ${FFA_TRANSPORT_INCLUDE} + +require ${@bb.utils.contains('MACHINE_FEATURES', 'uefi-secureboot', 'linux-yocto-uefi-secureboot.inc', '', d)} diff --git a/meta-arm/recipes-kernel/linux/linux-yocto-uefi-secureboot.inc b/meta-arm/recipes-kernel/linux/linux-yocto-uefi-secureboot.inc new file mode 100644 index 00000000..5c1f4de7 --- /dev/null +++ b/meta-arm/recipes-kernel/linux/linux-yocto-uefi-secureboot.inc @@ -0,0 +1,14 @@ +KERNEL_FEATURES += "cfg/efi-ext.scc" + +inherit sbsign + +# shell variable set inside do_compile task +SBSIGN_TARGET_BINARY = "$KERNEL_IMAGE" + +do_compile:append() { + KERNEL_IMAGE=$(find ${B} -name ${KERNEL_IMAGETYPE} -print -quit) + do_sbsign +} + +RRECOMMENDS:${PN} += "kernel-module-efivarfs" +RRECOMMENDS:${PN} += "kernel-module-efivars"