On Fri, Jun 5, 2026 at 8:17 AM Moteen Shah via lists.yoctoproject.org
<[email protected]> wrote:
>
> Add a standalone initramfs-module-netsetup recipe that installs
> 83-netsetup, an initramfs-framework module that configures the network
> interface via DHCP before the NFS root mount. The recipe's RDEPENDS
> pulls in CPSW and its dependencies, so the kernel modules and DHCP
> client are only included when NFS boot support is needed.
>
> Include initramfs-module-netsetup in packagegroup-ti-core-initramfs
> gated on :bsp-next, where AM65_CPSW_NUSS became a loadable module.
> TI staging kernels (6.6/6.12/6.18) still have CPSW built-in (=y).
>
> Signed-off-by: Moteen Shah <[email protected]>
> ---
> Hi everyone,
> AM65_CPSW_NUSS and its dependencies changed from built-in (=y) to
> loadable modules (=m) in linux-next. This breaks NFS boot because the
> Ethernet driver is no longer available before the NFS root mount.
>
> Add a standalone initramfs-module-netsetup recipe that waits for the
> Ethernet interface to appear after udev loads the modules and then
> configures it via DHCP before the nfsrootfs module runs. The CPSW
> kernel modules are declared as RDEPENDS:append:bsp-next of the recipe
> so they are only pulled in for bsp-next kernels and only when NFS boot
> support is needed.
>
> Changes in v3:
> - Remove FILESEXTRAPATHS:prepend - redundant in a standalone recipe (Denys)
> - Remove PACKAGE_ARCH = "${MACHINE_ARCH}" - script is not machine-specific
> (Denys)
> - Drop k3.inc patch; move CPSW modules into RDEPENDS:append:bsp-next of
> the recipe, linking module inclusion to NFS boot recipe inclusion
> - Gate initramfs-module-netsetup on :bsp-next in packagegroup so staging
> kernels (where CPSW is built-in =y) are unaffected
>
> .../initramfs-module-netsetup/83-netsetup | 54 +++++++++++++++++++
> .../initramfs-module-netsetup_1.0.bb | 31 +++++++++++
> .../packagegroup-ti-core-initramfs.bb | 2 +
> 3 files changed, 87 insertions(+)
> create mode 100644
> meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup
> create mode 100644
> meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb
>
> diff --git
> a/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup
> b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup
> new file mode 100644
> index 00000000..b71bc3b3
> --- /dev/null
> +++ b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup
> @@ -0,0 +1,54 @@
> +#!/bin/sh
> +# Configure network via DHCP before NFS root mount. Polls for an Ethernet
> +# interface with sleep 1 per iteration to allow the Ethernet driver deferred
> +# probe chain to settle after udev loads the modules.
> +
> +netsetup_enabled() {
> + [ "${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 ${iface} via DHCP"
> +
> + dhcpcd --waitip "${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..cdb6116a
> --- /dev/null
> +++ b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb
> @@ -0,0 +1,31 @@
> +SUMMARY = "initramfs support for DHCP network configuration before NFS root
> mount"
> +
> +LICENSE = "MIT"
> +LIC_FILES_CHKSUM =
> "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
> +
> +SRC_URI = "file://83-netsetup"
> +
> +S = "${UNPACKDIR}"
> +
> +do_install() {
> + install -d ${D}/init.d
> + install -m 0755 ${UNPACKDIR}/83-netsetup ${D}/init.d/83-netsetup
> +}
> +
> +FILES:${PN} = "/init.d/83-netsetup"
> +
> +RDEPENDS:${PN} = "\
> + initramfs-framework-base \
> + dhcpcd \
Sorry, I didn't notice this earlier. Is there a reason not to use
busybox-udhcpc which is already included?
This adds two packages:
+dhcpcd aarch64 10.3.0-r0.0
+libudev1 aarch64 1:259.5-r0.arago7.0
And increased the size by 1.6MB on arago-wrynose
+1,685,504 ti-core-initramfs.cpio
+327,560 ti-core-initramfs.cpio.xz
> +"
> +
> +RDEPENDS:${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 a9eff847..b4e6adff 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
> @@ -23,3 +23,5 @@ RDEPENDS:${PN} += "\
> initramfs-module-nfsrootfs \
> nfs-utils-mount \
> "
> +
> +RDEPENDS:${PN}:append:bsp-next = " initramfs-module-netsetup"
> --
> 2.34.1
>
>
>
>
--
Jonathan Cormier
Senior Software Engineer
Office: 315.425.4045 x222
http://www.CriticalLink.com
6712 Brooklawn Parkway, Syracuse, NY 13211
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