Thanks, looks good
On Mon, Jun 8, 2026 at 4:09 AM Moteen Shah <[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]> > --- > > Hello all, > 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 v4: > - Switch from dhcpcd to udhcpc -q (busybox, already in initramfs); > -q exits after obtaining lease so no background service survives > switch-root (Jonathan) > - Drop dhcpcd from RDEPENDS (Jonathan) > > Changes in v3: > - Remove FILESEXTRAPATHS:prepend - redundant in a standalone recipe (Denys) > - Remove PACKAGE_ARCH = "${MACHINE_ARCH}" - script is not machine-specific > (Denys) > - Drop k3.inc patch; move CPSW modules into RDEPENDS:append:bsp-next of > the recipe, linking module inclusion to NFS boot recipe inclusion > - Gate initramfs-module-netsetup on :bsp-next in packagegroup so staging > kernels (where CPSW is built-in =y) are unaffected > > Bootlogs: https://gist.github.com/Jamm02/2d078c20f0062394b0b7d09da7ee0a57 > > .../initramfs-module-netsetup/83-netsetup | 54 +++++++++++++++++++ > .../initramfs-module-netsetup_1.0.bb | 30 +++++++++++ > .../packagegroup-ti-core-initramfs.bb | 2 + > 3 files changed, 86 insertions(+) > create mode 100644 > meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup > create mode 100644 > meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup_1.0.bb > > diff --git > a/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup > b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup > new file mode 100644 > index 00000000..8e76bac4 > --- /dev/null > +++ b/meta-ti-bsp/recipes-ti/initramfs/initramfs-module-netsetup/83-netsetup > @@ -0,0 +1,54 @@ > +#!/bin/sh > +# Configure network via DHCP before NFS root mount. Polls for an Ethernet > +# interface with sleep 1 per iteration to allow the Ethernet driver deferred > +# probe chain to settle after udev loads the modules. > + > +netsetup_enabled() { > + [ "${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..ec04ea9d > --- /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://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420" > + > +SRC_URI = "file://83-netsetup" > + > +S = "${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:${PN} = "\ > + initramfs-framework-base \ > +" > + > +RDEPENDS:${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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