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linux-raspberrypi: Change to Linux Yocto style kernel recipes

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Yocto style recipes provide support for application of kernel
configuration fragments which is achieved with this change.

For further details see the Yocto Linux Kernel Development Manual

ref: http://www.yoctoproject.org/docs/1.6/kernel-dev/kernel-dev.html

In addition .bb files are simplified to take a SRCBRANCH which is
used by the SRC_URI set in linux-raspberrypi.inc and together with
the existing SRCREV define a checkout from the linux-raspberrypi
git repository.

A default configuration, defconfig, is provided as a baseline.
This is generated from bcmrpi_defconfig, as used in the existing
recipes, and so configuration options should be the same.

To change the kernel configuration a new configuration fragment
may be generated, as explained in the kernel development documentation
above, and this file then added to the SRC_URI via a .bbappend.

Added some minor refactoring and removed some useless code.

Change-Id: Ic72e14ec14ec3f042aeda0c6820f896be9c02e69
Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
This commit is contained in:
Alex J Lennon
2014-06-12 17:44:54 +01:00
committed by Andrei Gherzan
parent b6d899e4d2
commit 67a1c4eaaf
9 changed files with 3820 additions and 187 deletions
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recipes-kernel/linux/linux-raspberrypi.inc
+15 -24
View File
@@ -1,36 +1,27 @@
require linux.inc
FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
inherit kernel
require recipes-kernel/linux/linux-yocto.inc
DESCRIPTION = "Linux Kernel for Raspberry Pi"
SECTION = "kernel"
LICENSE = "GPLv2"
LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
SRC_URI += " \
file://defconfig \
"
COMPATIBLE_MACHINE = "raspberrypi"
PV_append = "+git${SRCREV}"
# NOTE: For now we pull in the default config from the RPi kernel GIT tree.
KERNEL_DEFCONFIG = "bcmrpi_defconfig"
SRC_URI = " \
git://github.com/raspberrypi/linux.git;protocol=git;branch=${KBRANCH} \
file://sl030raspberrypii2ckernel.patch \
file://defconfig \
"
S = "${WORKDIR}/git"
# CMDLINE for raspberrypi
CMDLINE_raspberrypi = "dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
UDEV_GE_141 ?= "1"
do_kernel_configme_prepend() {
install -m 0644 ${S}/arch/${ARCH}/configs/${KERNEL_DEFCONFIG} ${WORKDIR}/defconfig || die "No default configuration for ${MACHINE} / ${KERNEL_DEFCONFIG} available."
}
do_install_prepend() {
install -d ${D}/lib/firmware
}
CMDLINE ?= " \
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 \
root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
do_deploy_append() {
# Deploy cmdline.txt
install -d ${DEPLOYDIR}/bcm2835-bootfiles
echo "${CMDLINE}" > ${DEPLOYDIR}/bcm2835-bootfiles/cmdline.txt
}
COMPATIBLE_MACHINE = "raspberrypi"