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initramfs-framework: add nfsrootfs module

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nfsrootfs module mounts rootfs via nfs parsing "nfsroot" and "ip" cmdline options.

(From OE-Core rev: d1737f2dabac5e338061863c78a91b4c115365c7)

Signed-off-by: Oleksii Konoplitskyi <okonopli@cisco.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Oleksii Konoplitskyi 2018-05-25 16:56:48 +03:00 committed by Richard Purdie
parent cfd0c39fbf
commit f94c0c8e6f
2 changed files with 55 additions and 0 deletions
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48
meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs Normal file
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@ -0,0 +1,48 @@
#!/bin/sh
nfsrootfs_enabled() {
if [ ${bootparam_root} != "/dev/nfs" ] || [ -z ${bootparam_nfsroot} ]; then
return 1
fi
return 0
}
nfsrootfs_run() {
local nfs_opts
local location
local flags
local server_ip
nfs_opts=""
if [ "${bootparam_nfsroot#*,}" != "${bootparam_nfsroot}" ]; then
nfs_opts="-o ${bootparam_nfsroot#*,}"
fi
location="${bootparam_nfsroot%%,*}"
if [ "${location#*:}" = "${location}" ]; then
# server-ip not given. Get server ip from ip option
server_ip=""
if [ "${bootparam_ip#*:}" != "${bootparam_ip}" ]; then
server_ip=$(echo "$bootparam_ip" | cut -d: -f2)
fi
if [ -z "$server_ip" ]; then
fatal "Server IP is not set. Update ip or nfsroot options."
fi
location=${server_ip}:${location}
fi
flags="-o nolock"
if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | grep -w -q "ro"; then
if [ -n "$bootparam_rootflags" ]; then
bootparam_rootflags="$bootparam_rootflags,"
fi
bootparam_rootflags="${bootparam_rootflags}ro"
fi
if [ -n "$bootparam_rootflags" ]; then
flags="$flags -o $bootparam_rootflags"
fi
mount -t nfs ${flags} ${nfs_opts} ${location} ${ROOTFS_DIR}
}

7
meta/recipes-core/initrdscripts/initramfs-framework_1.0.bb
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@ -9,6 +9,7 @@ inherit allarch
SRC_URI = "file://init \
file://exec \
file://nfsrootfs \
file://rootfs \
file://finish \
file://mdev \
@ -24,6 +25,7 @@ do_install() {
# base
install -m 0755 ${WORKDIR}/init ${D}/init
install -m 0755 ${WORKDIR}/nfsrootfs ${D}/init.d/85-nfsrootfs
install -m 0755 ${WORKDIR}/rootfs ${D}/init.d/90-rootfs
install -m 0755 ${WORKDIR}/finish ${D}/init.d/99-finish
@ -53,6 +55,7 @@ PACKAGES = "${PN}-base \
initramfs-module-mdev \
initramfs-module-udev \
initramfs-module-e2fs \
initramfs-module-nfsrootfs \
initramfs-module-rootfs \
initramfs-module-debug \
"
@ -83,6 +86,10 @@ SUMMARY_initramfs-module-e2fs = "initramfs support for ext4/ext3/ext2 filesystem
RDEPENDS_initramfs-module-e2fs = "${PN}-base"
FILES_initramfs-module-e2fs = "/init.d/10-e2fs"
SUMMARY_initramfs-module-nfsrootfs = "initramfs support for locating and mounting the root partition via nfs"
RDEPENDS_initramfs-module-nfsrootfs = "${PN}-base"
FILES_initramfs-module-nfsrootfs = "/init.d/85-nfsrootfs"
SUMMARY_initramfs-module-rootfs = "initramfs support for locating and mounting the root partition"
RDEPENDS_initramfs-module-rootfs = "${PN}-base"
FILES_initramfs-module-rootfs = "/init.d/90-rootfs"