mirror of
git://git.yoctoproject.org/meta-raspberrypi.git
synced 2025-07-19 21:09:03 +02:00
207 lines
8.0 KiB
PHP
207 lines
8.0 KiB
PHP
DESCRIPTION = "Linux Kernel for Raspberry Pi"
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SECTION = "kernel"
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LICENSE = "GPLv2"
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LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
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COMPATIBLE_MACHINE = "^rpi$"
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PE = "1"
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PV = "${LINUX_VERSION}+git${SRCPV}"
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inherit kernel siteinfo
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require recipes-kernel/linux/linux-yocto.inc
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KCONFIG_MODE = "--alldefconfig"
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KBUILD_DEFCONFIG_raspberrypi0-wifi ?= "bcmrpi_defconfig"
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KBUILD_DEFCONFIG_raspberrypi ?= "bcmrpi_defconfig"
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KBUILD_DEFCONFIG_raspberrypi2 ?= "bcm2709_defconfig"
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KBUILD_DEFCONFIG_raspberrypi3 ?= "bcm2709_defconfig"
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KBUILD_DEFCONFIG_raspberrypi3-64 ?= "bcmrpi3_defconfig"
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# CMDLINE for raspberrypi
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CMDLINE ?= "dwc_otg.lpm_enable=0 console=serial0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
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# Add the kernel debugger over console kernel command line option if enabled
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CMDLINE_append = ' ${@oe.utils.conditional("ENABLE_KGDB", "1", "kgdboc=serial0,115200", "", d)}'
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# Disable rpi logo on boot
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CMDLINE_append += ' ${@oe.utils.conditional("DISABLE_RPI_BOOT_LOGO", "1", "logo.nologo", "", d)}'
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# You can define CMDLINE_DEBUG as "debug" in your local.conf or distro.conf
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# to enable kernel debugging.
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CMDLINE_DEBUG ?= ""
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CMDLINE_append = " ${CMDLINE_DEBUG}"
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# Quirk for udev greater or equal 141
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UDEV_GE_141 ?= "1"
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# Enable OABI compat for people stuck with obsolete userspace
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ARM_KEEP_OABI ?= "1"
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KERNEL_INITRAMFS ?= '${@oe.utils.conditional("INITRAMFS_IMAGE_BUNDLE", "1", "1", "", d)}'
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KERNEL_MODULE_AUTOLOAD += "${@bb.utils.contains("MACHINE_FEATURES", "pitft28r", "stmpe-ts", "", d)}"
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# A LOADADDR is needed when building a uImage format kernel. This value is not
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# set by default in rpi-4.8.y and later branches so we need to provide it
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# manually. This value unused if KERNEL_IMAGETYPE is not uImage.
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KERNEL_EXTRA_ARGS += "LOADADDR=0x00008000"
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# Set a variable in .configure
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# $1 - Configure variable to be set
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# $2 - value [n/y/value]
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kernel_configure_variable() {
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# Remove the config
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CONF_SED_SCRIPT="$CONF_SED_SCRIPT /CONFIG_$1[ =]/d;"
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if test "$2" = "n"
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then
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echo "# CONFIG_$1 is not set" >> ${B}/.config
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else
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echo "CONFIG_$1=$2" >> ${B}/.config
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fi
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}
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config_setup() {
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# From kernel.bbclass. Unfortunately, this is needed to support builds that
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# use devtool. The reason is as follows:
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#
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# - In devtool builds, externalsrc.bbclass gets inherited and sets a list of
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# SRCTREECOVEREDTASKS, which don't get run because they affect the source
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# tree and, when using devtool, we want the developer's changes to be the
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# single source of truth. kernel-yocto.bbclass adds do_kernel_configme to
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# SRCTREECOVEREDTASKS, so it doesn't run in a devtool build., In a normal
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# non-devtool build, do_kernel_configme creates ${B}.config.
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#
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# - Normally (e.g. in linux-yocto), it would be OK that do_kernel_configme
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# doesn't run, because the first few lines of do_configure in kernel.bbclass
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# populate ${B}.config from either ${S}.config (if it exists) for custom
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# developer changes, or otherwise from ${WORDIR}/defconfig.
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#
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# - In linux-raspberrypi, we add do_configure_prepend, which tweaks
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# ${B}.config. Since this runs *before* the kernel.bbclass do_configure,
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# ${B}.config doesn't yet exist and we hit an error. Thus we need to move
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# the logic from do_configure up to before our do_configure_prepend. Because
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# we are copying only a portion of do_configure and not the whole thing,
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# there is no clean way to do it using OE functionality, so we just
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# copy-and-paste.
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if [ "${S}" != "${B}" ] && [ -f "${S}/.config" ] && [ ! -f "${B}/.config" ]; then
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mv "${S}/.config" "${B}/.config"
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fi
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# Copy defconfig to .config if .config does not exist. This allows
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# recipes to manage the .config themselves in do_configure_prepend().
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if [ -f "${WORKDIR}/defconfig" ] && [ ! -f "${B}/.config" ]; then
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cp "${WORKDIR}/defconfig" "${B}/.config"
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fi
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}
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do_configure_prepend() {
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config_setup
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mv -f ${B}/.config ${B}/.config.patched
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CONF_SED_SCRIPT=""
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# oabi / eabi support
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kernel_configure_variable AEABI y
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if [ "${ARM_KEEP_OABI}" = "1" ] ; then
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kernel_configure_variable OABI_COMPAT y
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else
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kernel_configure_variable OABI_COMPAT n
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fi
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# Set cmdline
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kernel_configure_variable CMDLINE "\"${CMDLINE}\""
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# Localversion
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kernel_configure_variable LOCALVERSION "\"\""
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kernel_configure_variable LOCALVERSION_AUTO n
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# Udev quirks
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# Newer versions of udev mandate that sysfs doesn't have deprecated entries
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if [ "${UDEV_GE_141}" = "1" ] ; then
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kernel_configure_variable SYSFS_DEPRECATED n
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kernel_configure_variable SYSFS_DEPRECATED_V2 n
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kernel_configure_variable HOTPLUG y
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kernel_configure_variable UEVENT_HELPER_PATH "\"\""
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kernel_configure_variable UNIX y
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kernel_configure_variable SYSFS y
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kernel_configure_variable PROC_FS y
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kernel_configure_variable TMPFS y
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kernel_configure_variable INOTIFY_USER y
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kernel_configure_variable SIGNALFD y
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kernel_configure_variable TMPFS_POSIX_ACL y
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kernel_configure_variable BLK_DEV_BSG y
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kernel_configure_variable DEVTMPFS y
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kernel_configure_variable DEVTMPFS_MOUNT y
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fi
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# Newer inits like systemd need cgroup support
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if [ "${KERNEL_ENABLE_CGROUPS}" = "1" ] ; then
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kernel_configure_variable CGROUP_SCHED y
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kernel_configure_variable CGROUPS y
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kernel_configure_variable CGROUP_NS y
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kernel_configure_variable CGROUP_FREEZER y
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kernel_configure_variable CGROUP_DEVICE y
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kernel_configure_variable CPUSETS y
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kernel_configure_variable PROC_PID_CPUSET y
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kernel_configure_variable CGROUP_CPUACCT y
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kernel_configure_variable RESOURCE_COUNTERS y
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fi
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# root-over-nfs-over-usb-eth support. Limited, but should cover some cases
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# Enable this by setting a proper CMDLINE_NFSROOT_USB.
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if [ ! -z "${CMDLINE_NFSROOT_USB}" ]; then
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oenote "Configuring the kernel for root-over-nfs-over-usb-eth with CMDLINE ${CMDLINE_NFSROOT_USB}"
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kernel_configure_variable INET y
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kernel_configure_variable IP_PNP y
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kernel_configure_variable USB_GADGET y
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kernel_configure_variable USB_GADGET_SELECTED y
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kernel_configure_variable USB_ETH y
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kernel_configure_variable NFS_FS y
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kernel_configure_variable ROOT_NFS y
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kernel_configure_variable ROOT_NFS y
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kernel_configure_variable CMDLINE "\"${CMDLINE_NFSROOT_USB}\""
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fi
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if [ ! -z "${KERNEL_INITRAMFS}" ]; then
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kernel_configure_variable BLK_DEV_INITRD y
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kernel_configure_variable INITRAMFS_SOURCE ""
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kernel_configure_variable RD_GZIP y
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kernel_configure_variable OVERLAY_FS y
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kernel_configure_variable SQUASHFS y
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kernel_configure_variable UBIFS_FS y
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fi
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# Activate CONFIG_LEGACY_PTYS
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kernel_configure_variable LEGACY_PTYS y
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# this module is built externally via drbd-utils
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kernel_configure_variable BLK_DEV_DRBD n
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# Activate the configuration options for VC4
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VC4GRAPHICS="${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "1", "0", d)}"
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if [ ${VC4GRAPHICS} = "1" ]; then
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kernel_configure_variable I2C_BCM2835 y
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kernel_configure_variable DRM y
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kernel_configure_variable DRM_FBDEV_EMULATION y
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kernel_configure_variable DRM_VC4 y
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fi
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# Keep this the last line
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# Remove all modified configs and add the rest to .config
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sed -e "${CONF_SED_SCRIPT}" < '${B}/.config.patched' >> '${B}/.config'
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rm -f ${B}/.config.patched
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}
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do_compile_append_raspberrypi3-64() {
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cc_extra=$(get_cc_option)
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oe_runmake dtbs CC="${KERNEL_CC} $cc_extra " LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS}
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}
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do_deploy_append() {
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# Deploy cmdline.txt
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install -d ${DEPLOYDIR}/bcm2835-bootfiles
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PITFT="${@bb.utils.contains("MACHINE_FEATURES", "pitft", "1", "0", d)}"
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if [ ${PITFT} = "1" ]; then
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PITFT_PARAMS="fbcon=map:10 fbcon=font:VGA8x8"
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fi
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echo "${CMDLINE}${PITFT_PARAMS}" > ${DEPLOYDIR}/bcm2835-bootfiles/cmdline.txt
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}
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