On Tue, Jun 02, 2026 at 04:18:10PM +0530, Moteen Shah via
lists.yoctoproject.org wrote:
> Add 83-netsetup, an initramfs-framework module that configures the
> network interface via DHCP before the NFS root mount. Needed when the
> Ethernet driver is a loadable module and the deferred probe chain
> requires time to settle after udev loads the modules. Also add dhcpcd
> to packagegroup-ti-core-initramfs to support DHCP configuration.
>
> Signed-off-by: Moteen Shah <[email protected]>
> ---
> .../initramfs-framework/83-netsetup | 54 +++++++++++++++++++
> .../initramfs-framework_%.bbappend | 15 ++++++
> .../packagegroup-ti-core-initramfs.bb | 2 +
> 3 files changed, 71 insertions(+)
> create mode 100644
> meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework/83-netsetup
> create mode 100644
> meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework_%.bbappend
>
> diff --git
> a/meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework/83-netsetup
> b/meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework/83-netsetup
> new file mode 100644
> index 00000000..b71bc3b3
> --- /dev/null
> +++
> b/meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework/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 ${iface} via DHCP"
> +
> + dhcpcd --waitip "${iface}"
> +}
> diff --git
> a/meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework_%.bbappend
> b/meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework_%.bbappend
> new file mode 100644
> index 00000000..c8955689
> --- /dev/null
> +++
> b/meta-ti-bsp/recipes-core/initramfs-scripts/initramfs-framework_%.bbappend
> @@ -0,0 +1,15 @@
> +FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
> +
> +SUMMARY:initramfs-module-netsetup = "initramfs support for DHCP network
> setup before NFS root mount"
This should probably be a standalone initramfs-module* recipe, instead of a
bbappend.
> +SRC_URI:append = " file://83-netsetup"
> +
> +PACKAGES =+ "initramfs-module-netsetup"
> +
> +RDEPENDS:initramfs-module-netsetup = "${PN}-base"
> +
> +FILES:initramfs-module-netsetup = "/init.d/83-netsetup"
> +
> +do_install:append() {
> + install -m 0755 ${UNPACKDIR}/83-netsetup ${D}/init.d/83-netsetup
> +}
> diff --git
> a/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb
> b/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb
> index a9eff847..ede0639d 100644
> --- a/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb
> +++ b/meta-ti-bsp/recipes-ti/initramfs/packagegroup-ti-core-initramfs.bb
> @@ -18,6 +18,8 @@ RDEPENDS:${PN} += "\
> netbase \
> base-files \
> base-passwd \
> + dhcpcd \
> + initramfs-module-netsetup \
> initramfs-framework-base \
> initramfs-module-udev \
> initramfs-module-nfsrootfs \
> --
> 2.34.1
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