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[87.100.218.141]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54d6e5f515bsm1244639e87.222.2025.04.22.07.46.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Apr 2025 07:46:08 -0700 (PDT) From: Mikko Rapeli To: linux-yocto@lists.yoctoproject.org Cc: poky@lists.yoctoproject.org, Mikko Rapeli Subject: [PATCH 2/3] kernel-yocto.bbclass: support modular kernel configs Date: Tue, 22 Apr 2025 17:45:46 +0300 Message-ID: <20250422144547.101765-2-mikko.rapeli@linaro.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250422144547.101765-1-mikko.rapeli@linaro.org> References: <20250422144547.101765-1-mikko.rapeli@linaro.org> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 22 Apr 2025 14:46:16 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/poky/message/13596 Compile many kernel drivers as modules when recipe sets MODULAR_KERNEL = "true" This likely requires support for initramfs which includes kernel modules needed to mount the rootfs. SCC_OPTS can be used to add arguments to scc kernel config generation call. Signed-off-by: Mikko Rapeli --- meta/classes-recipe/kernel-yocto.bbclass | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/meta/classes-recipe/kernel-yocto.bbclass b/meta/classes-recipe/kernel-yocto.bbclass index cef6b9ec3f..f98720bcec 100644 --- a/meta/classes-recipe/kernel-yocto.bbclass +++ b/meta/classes-recipe/kernel-yocto.bbclass @@ -26,6 +26,12 @@ KCONF_BSP_AUDIT_LEVEL ?= "0" KMETA_AUDIT ?= "yes" KMETA_AUDIT_WERROR ?= "" +# most drivers as built in (default), or as modules +MODULAR_KERNEL = "false" + +# options to scc +SCC_OPTS ?= "${@bb.utils.contains('MODULAR_KERNEL', 'true', '-DMODULE_OR_Y=m', '', d)}" + # returns local (absolute) path names for all valid patches in the # src_uri def find_patches(d,subdir): @@ -298,7 +304,7 @@ do_kernel_metadata() { elements="`echo -n ${bsp_definition} $sccs_defconfig ${sccs} ${patches} $KERNEL_FEATURES_FINAL`" if [ -n "${elements}" ]; then echo "${bsp_definition}" > ${S}/${meta_dir}/bsp_definition - scc --force -o ${S}/${meta_dir}:cfg,merge,meta ${includes} $sccs_defconfig $bsp_definition $sccs $patches $KERNEL_FEATURES_FINAL + scc ${SCC_OPTS} --force -o ${S}/${meta_dir}:cfg,merge,meta ${includes} $sccs_defconfig $bsp_definition $sccs $patches $KERNEL_FEATURES_FINAL if [ $? -ne 0 ]; then bbfatal_log "Could not generate configuration queue for ${KMACHINE}." fi