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Fri, 07 Aug 2026 07:39:06 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/meta-ti/message/20236 Introduce a minimal initramfs image used to probe boot-essential and other modules that cannot be built directly into the upstream Linux kernel image without growing it unnecessarily. ti-soc.inc wires the enable/trigger logic (ti-core-initramfs.inc) in so any K3 image's do_image_wic automatically depends on it once TI_CORE_INITRAMFS_ENABLED is set. Signed-off-by: Moteen Shah --- v3: Add missing PV = "1.0" to both new recipes v2: Simplified subject line .../machine/include/ti-core-initramfs.inc | 23 +++++++++++ meta-ti-bsp/conf/machine/include/ti-soc.inc | 1 + .../packagegroup-ti-core-initramfs.bb | 27 +++++++++++++ .../recipes-ti/initramfs/ti-core-initramfs.bb | 39 +++++++++++++++++++ 4 files changed, 90 insertions(+) create mode 100644 meta-ti-bsp/conf/machine/include/ti-core-initramfs.inc create mode 100644 meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb create mode 100644 meta-ti-bsp/recipes-ti/initramfs/ti-core-initramfs.bb -- 2.34.1 diff --git a/meta-ti-bsp/conf/machine/include/ti-core-initramfs.inc b/meta-ti-bsp/conf/machine/include/ti-core-initramfs.inc new file mode 100644 index 00000000..15c05e04 --- /dev/null +++ b/meta-ti-bsp/conf/machine/include/ti-core-initramfs.inc @@ -0,0 +1,23 @@ +#------------------------------------------------------------------------------ +# +# To turn off the ti-core-initramfs.cpio creation just set: +# +# TI_CORE_INITRAMFS_ENABLED = "0" +# +#------------------------------------------------------------------------------ +TI_CORE_INITRAMFS_ENABLED ?= "${@ '1' if d.getVar('TI_CORE_INITRAMFS_KERNEL_MODULES') or d.getVar('TI_CORE_INITRAMFS_EXTRA_INSTALL') or bb.utils.contains('DISTRO_FEATURES', 'luks', True, False, d) else '0'}" + +TI_CORE_INITRAMFS_KERNEL_MODULES ?= "" +TI_CORE_INITRAMFS_EXTRA_INSTALL ?= "" + +TI_CORE_INITRAMFS_IMAGE = "ti-core-initramfs" +TI_CORE_INITRAMFS_IMAGE_FILE = "${TI_CORE_INITRAMFS_IMAGE}.cpio.xz" + +#------------------------------------------------------------------------------ +# Apply all of the needed changes to create/use the initramfs (if enabled). +#------------------------------------------------------------------------------ +do_image_wic[depends] += "${@ '${TI_CORE_INITRAMFS_IMAGE}:do_image_complete' if d.getVar('TI_CORE_INITRAMFS_ENABLED') == "1" else ''}" + +TI_WKS_INITRAMFS ?= "${@ ',initrd=${TI_CORE_INITRAMFS_IMAGE_FILE}' if d.getVar('TI_CORE_INITRAMFS_ENABLED') == "1" else ''}" + +IMAGE_BOOT_FILES += "${@ '${TI_CORE_INITRAMFS_IMAGE_FILE}' if d.getVar('TI_CORE_INITRAMFS_ENABLED') == "1" else ''}" diff --git a/meta-ti-bsp/conf/machine/include/ti-soc.inc b/meta-ti-bsp/conf/machine/include/ti-soc.inc index 438dd6ab..c4472113 100644 --- a/meta-ti-bsp/conf/machine/include/ti-soc.inc +++ b/meta-ti-bsp/conf/machine/include/ti-soc.inc @@ -3,6 +3,7 @@ SOC_FAMILY = "ti-soc" require conf/machine/include/soc-family.inc require conf/machine/include/ti-extras.inc +require conf/machine/include/ti-core-initramfs.inc # kernel, initrd load addresses for the fitImage in all TI platforms UBOOT_ENTRYPOINT = "0x82000000" diff --git a/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb b/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb new file mode 100644 index 00000000..7f62dd19 --- /dev/null +++ b/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb @@ -0,0 +1,27 @@ +SUMMARY = "Minimal initramfs for boot requirements" + +LICENSE = "MIT" + +PV = "1.0" + +PACKAGE_ARCH = "${MACHINE_ARCH}" + +inherit packagegroup + +TI_CORE_INITRAMFS_KERNEL_MODULES ?= "" + +RDEPENDS:${PN} += "\ + ${TI_CORE_INITRAMFS_KERNEL_MODULES} \ + ${VIRTUAL-RUNTIME_base-utils} \ + ${VIRTUAL-RUNTIME_login_manager} \ + ${VIRTUAL-RUNTIME_init_manager} \ + ${VIRTUAL-RUNTIME_dev_manager} \ + ${VIRTUAL-RUNTIME_update-alternatives} \ + netbase \ + base-files \ + base-passwd \ + initramfs-framework-base \ + initramfs-module-udev \ + initramfs-module-nfsrootfs \ + nfs-utils-mount \ +" diff --git a/meta-ti-bsp/recipes-ti/initramfs/ti-core-initramfs.bb b/meta-ti-bsp/recipes-ti/initramfs/ti-core-initramfs.bb new file mode 100644 index 00000000..5688044e --- /dev/null +++ b/meta-ti-bsp/recipes-ti/initramfs/ti-core-initramfs.bb @@ -0,0 +1,39 @@ +SUMMARY = "TI SDK minimal initramfs image" + +DESCRIPTION = "Image meant to probe boot essential modules\ + and other modules to reach the userspace, which cannot be\ + built inside the upstream linux kernel image.\ +" + +LICENSE = "MIT" + +PV = "1.0" + +INITRAMFS_FSTYPES = "cpio cpio.xz" + +INITRAMFS_MAXSIZE = "131072" + +IMAGE_NAME = "ti-core-initramfs" + +export IMAGE_BASENAME = "${IMAGE_NAME}" + +TI_CORE_INITRAMFS_EXTRA_INSTALL ?= "" + +PACKAGE_INSTALL = "\ + packagegroup-ti-core-initramfs \ + ${TI_CORE_INITRAMFS_EXTRA_INSTALL} \ +" + +# Ensure the initramfs only contains the bare minimum +IMAGE_FEATURES = "" +IMAGE_LINGUAS = "" + +# on the kernel image. +PACKAGE_EXCLUDE = "kernel-image-*" + +IMAGE_FSTYPES = "${INITRAMFS_FSTYPES}" +IMAGE_NAME_SUFFIX ?= "" +IMAGE_ROOTFS_SIZE = "8192" +IMAGE_ROOTFS_EXTRA_SPACE = "0" + +inherit image From patchwork Fri Aug 7 07:38:35 2026 Content-Type: text/plain; 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Fri, 07 Aug 2026 07:39:06 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/meta-ti/message/20238 From: Ryan Eatmon ti-core-initramfs.inc appends the initramfs image file to IMAGE_BOOT_FILES. A weak default (?=) elsewhere in the same variable's assignment chain can silently drop that append depending on include order, so switch k3.inc's own default to a normal append (+=) to guarantee the required boot files are never clobbered. Signed-off-by: Ryan Eatmon Signed-off-by: Moteen Shah --- v2: Simplified subject line; added my own Signed-off-by alongside the original author's instead of replacing it meta-ti-bsp/conf/machine/include/k3.inc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.34.1 diff --git a/meta-ti-bsp/conf/machine/include/k3.inc b/meta-ti-bsp/conf/machine/include/k3.inc index d17ae71b..21738316 100644 --- a/meta-ti-bsp/conf/machine/include/k3.inc +++ b/meta-ti-bsp/conf/machine/include/k3.inc @@ -44,7 +44,7 @@ MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS += "ti-pka-fw" IMAGE_FSTYPES += "tar.xz wic.xz wic.bmap" -IMAGE_BOOT_FILES ?= "${SPL_BINARYNAME} u-boot.${UBOOT_SUFFIX} tiboot3.bin tiboot3-*-evm.bin" +IMAGE_BOOT_FILES += "${SPL_BINARYNAME} u-boot.${UBOOT_SUFFIX} tiboot3.bin tiboot3-*-evm.bin" IMAGE_EFI_BOOT_FILES ?= "${IMAGE_BOOT_FILES}" EFI_PROVIDER ?= "grub-efi" From patchwork Fri Aug 7 07:38:36 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moteen Shah X-Patchwork-Id: 94745 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 456A5C5AC7A for ; 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Fri, 07 Aug 2026 07:39:16 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/meta-ti/message/20239 Add an initramfs-framework module (83-netsetup) that brings up an Ethernet interface via DHCP before mounting an NFS root, polling for the interface to allow the driver's deferred-probe chain to settle after udev loads modules. Pull it into the initramfs packagegroup under bsp-next and bsp-ti-6_12, matching the kernel-module CPSW driver sets those brandings need for the direct (non-proxy) CPSW path. Signed-off-by: Moteen Shah --- v2: Shortened subject to fit under 80 chars .../initramfs-module-netsetup/83-netsetup | 54 +++++++++++++++++++ .../initramfs-module-netsetup_1.0.bb | 30 +++++++++++ .../packagegroup-ti-core-initramfs.bb | 3 ++ 3 files changed, 87 insertions(+) create mode 100755 meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup create mode 100644 meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb diff --git a/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup new file mode 100755 index 00000000..8e76bac4 --- /dev/null +++ b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup @@ -0,0 +1,54 @@ +#!/bin/sh +# Configure network via DHCP before NFS root mount. Polls for an Ethernet +# interface with sleep 1 per iteration to allow the Ethernet driver deferred +# probe chain to settle after udev loads the modules. + +netsetup_enabled() { + [ "${bootparam_root}" = "/dev/nfs" ] || return 1 + return 0 +} + +netsetup_run() { + local iface timeout devtype + + # Extract interface from ip= kernel param (format: client:server:gw:mask:host:device:autoconf) + iface="" + case "${bootparam_ip}" in + dhcp|on|any|"") + ;; + *) + iface=$(echo "${bootparam_ip}" | cut -d: -f6) + ;; + esac + + udevadm trigger --action=add --subsystem-match=net + udevadm settle --timeout=10 + + # Poll up to 60 seconds for an Ethernet interface (ARPHRD_ETHER = type 1). + msg "netsetup: waiting for ethernet interface..." + timeout=60 + while [ "${timeout}" -gt 0 ]; do + if [ -n "${iface}" ] && [ -d "/sys/class/net/${iface}" ]; then + break + fi + for dev in /sys/class/net/*; do + [ -f "${dev}/type" ] || continue + devtype=$(cat "${dev}/type") + [ "${devtype}" = "1" ] || continue + iface=$(basename "${dev}") + break + done + [ -n "${iface}" ] && [ -d "/sys/class/net/${iface}" ] && break + sleep 1 + timeout=$((timeout - 1)) + done + + if [ -z "${iface}" ] || [ ! -d "/sys/class/net/${iface}" ]; then + msg "netsetup: no ethernet interface found after 60s, skipping DHCP" + return + fi + + msg "netsetup: configuring ${iface} via DHCP" + + udhcpc -q -i "${iface}" +} diff --git a/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb new file mode 100644 index 00000000..6b465462 --- /dev/null +++ b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb @@ -0,0 +1,30 @@ +SUMMARY = "initramfs support for DHCP network configuration before NFS root mount" + +LICENSE = "MIT" +LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420" + +SRC_URI = "file://83-netsetup" + +S = "${WORKDIR}" + +do_install() { + install -d ${D}/init.d + install -m 0755 ${WORKDIR}/83-netsetup ${D}/init.d/83-netsetup +} + +FILES:${PN} = "/init.d/83-netsetup" + +RDEPENDS:${PN} = "\ + initramfs-framework-base \ +" + +RDEPENDS:${PN}:append:bsp-next = " \ + kernel-module-ti-am65-cpsw-nuss \ + kernel-module-k3-cppi-desc-pool \ + kernel-module-davinci-mdio \ + kernel-module-ti-cpsw-ale \ + kernel-module-ti-cpsw-sl \ + kernel-module-phylink \ + kernel-module-mdio-bitbang \ + kernel-module-phy-gmii-sel \ +" diff --git a/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb b/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb index 7f62dd19..79100920 100644 --- a/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb +++ b/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb @@ -25,3 +25,6 @@ RDEPENDS:${PN} += "\ initramfs-module-nfsrootfs \ nfs-utils-mount \ " + +RDEPENDS:${PN}:append:bsp-next = " initramfs-module-netsetup" +RDEPENDS:${PN}:append:bsp-ti-6_12 = " initramfs-module-netsetup" From patchwork Fri Aug 7 07:38:37 2026 Content-Type: text/plain; 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Fri, 07 Aug 2026 07:39:06 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/meta-ti/message/20237 Add the CPSW proxy-client and remoteproc/rpmsg kernel modules needed for NFS boot to work on j722s. Signed-off-by: Moteen Shah --- v2: Simplified subject line and commit message .../initramfs/initramfs-module-netsetup_1.0.bb | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb index 6b465462..a10d98fa 100644 --- a/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb +++ b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb @@ -28,3 +28,18 @@ RDEPENDS:${PN}:append:bsp-next = " \ kernel-module-mdio-bitbang \ kernel-module-phy-gmii-sel \ " + +# CPSW proxy-client path: CPSW is owned by a remote core, Linux talks to it +# over rpmsg/mailbox instead of driving the switch directly. Scoped to the +# j722s SoC family specifically (not the bsp-ti-6_12 kernel branding) since +# this is a chip-level hardware architecture, not something every K3 SoC on +# this kernel necessarily builds modules for. +RDEPENDS:${PN}:append:j722s = " \ + kernel-module-ti-cpsw-proxy-client \ + kernel-module-omap-mailbox \ + kernel-module-ti-k3-dsp-remoteproc \ + kernel-module-ti-k3-m4-remoteproc \ + kernel-module-ti-k3-r5-remoteproc \ + kernel-module-rpmsg-char \ + kernel-module-rpmsg-ctrl \ +"