blob: 03acfb41070db19c40e8f6e3bc4ba03ba31fc6a7 [file] [log] [blame]
Patrick Williams8b8bc412016-08-17 15:02:23 -05001DESCRIPTION = "Linux Kernel for Raspberry Pi"
2SECTION = "kernel"
3LICENSE = "GPLv2"
4LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
5
Brad Bishopd7bf8c12018-02-25 22:55:05 -05006COMPATIBLE_MACHINE = "^rpi$"
Patrick Williams8b8bc412016-08-17 15:02:23 -05007
8PE = "1"
9PV = "${LINUX_VERSION}+git${SRCPV}"
10
Brad Bishopd7bf8c12018-02-25 22:55:05 -050011inherit kernel siteinfo
12require recipes-kernel/linux/linux-yocto.inc
13
Brad Bishop9392c692018-09-07 15:37:17 +010014SRC_URI += "file://rpi-kernel-misc.cfg"
15
Brad Bishopd7bf8c12018-02-25 22:55:05 -050016KCONFIG_MODE = "--alldefconfig"
17KBUILD_DEFCONFIG_raspberrypi0-wifi ?= "bcmrpi_defconfig"
18KBUILD_DEFCONFIG_raspberrypi ?= "bcmrpi_defconfig"
19KBUILD_DEFCONFIG_raspberrypi2 ?= "bcm2709_defconfig"
20KBUILD_DEFCONFIG_raspberrypi3 ?= "bcm2709_defconfig"
21KBUILD_DEFCONFIG_raspberrypi3-64 ?= "bcmrpi3_defconfig"
Patrick Williams8b8bc412016-08-17 15:02:23 -050022
23# CMDLINE for raspberrypi
Brad Bishop316dfdd2018-06-25 12:45:53 -040024SERIAL = "${@oe.utils.conditional("ENABLE_UART", "1", "console=serial0,115200", "", d)}"
25CMDLINE ?= "dwc_otg.lpm_enable=0 ${SERIAL} root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
Patrick Williams8b8bc412016-08-17 15:02:23 -050026
27# Add the kernel debugger over console kernel command line option if enabled
Brad Bishop316dfdd2018-06-25 12:45:53 -040028CMDLINE_append = ' ${@oe.utils.conditional("ENABLE_KGDB", "1", "kgdboc=serial0,115200", "", d)}'
Patrick Williams8b8bc412016-08-17 15:02:23 -050029
Brad Bishopd7bf8c12018-02-25 22:55:05 -050030# Disable rpi logo on boot
Brad Bishop316dfdd2018-06-25 12:45:53 -040031CMDLINE_append += ' ${@oe.utils.conditional("DISABLE_RPI_BOOT_LOGO", "1", "logo.nologo", "", d)}'
Brad Bishopd7bf8c12018-02-25 22:55:05 -050032
33# You can define CMDLINE_DEBUG as "debug" in your local.conf or distro.conf
34# to enable kernel debugging.
35CMDLINE_DEBUG ?= ""
36CMDLINE_append = " ${CMDLINE_DEBUG}"
37
Brad Bishop316dfdd2018-06-25 12:45:53 -040038KERNEL_INITRAMFS ?= '${@oe.utils.conditional("INITRAMFS_IMAGE_BUNDLE", "1", "1", "", d)}'
Brad Bishopd7bf8c12018-02-25 22:55:05 -050039
Patrick Williams8b8bc412016-08-17 15:02:23 -050040KERNEL_MODULE_AUTOLOAD += "${@bb.utils.contains("MACHINE_FEATURES", "pitft28r", "stmpe-ts", "", d)}"
41
Brad Bishopd7bf8c12018-02-25 22:55:05 -050042# A LOADADDR is needed when building a uImage format kernel. This value is not
43# set by default in rpi-4.8.y and later branches so we need to provide it
44# manually. This value unused if KERNEL_IMAGETYPE is not uImage.
45KERNEL_EXTRA_ARGS += "LOADADDR=0x00008000"
46
47# Set a variable in .configure
48# $1 - Configure variable to be set
49# $2 - value [n/y/value]
50kernel_configure_variable() {
51 # Remove the config
52 CONF_SED_SCRIPT="$CONF_SED_SCRIPT /CONFIG_$1[ =]/d;"
53 if test "$2" = "n"
54 then
55 echo "# CONFIG_$1 is not set" >> ${B}/.config
56 else
57 echo "CONFIG_$1=$2" >> ${B}/.config
58 fi
Patrick Williams8b8bc412016-08-17 15:02:23 -050059}
60
Brad Bishop316dfdd2018-06-25 12:45:53 -040061config_setup() {
62 # From kernel.bbclass. Unfortunately, this is needed to support builds that
63 # use devtool. The reason is as follows:
64 #
65 # - In devtool builds, externalsrc.bbclass gets inherited and sets a list of
66 # SRCTREECOVEREDTASKS, which don't get run because they affect the source
67 # tree and, when using devtool, we want the developer's changes to be the
68 # single source of truth. kernel-yocto.bbclass adds do_kernel_configme to
69 # SRCTREECOVEREDTASKS, so it doesn't run in a devtool build., In a normal
70 # non-devtool build, do_kernel_configme creates ${B}.config.
71 #
72 # - Normally (e.g. in linux-yocto), it would be OK that do_kernel_configme
73 # doesn't run, because the first few lines of do_configure in kernel.bbclass
74 # populate ${B}.config from either ${S}.config (if it exists) for custom
75 # developer changes, or otherwise from ${WORDIR}/defconfig.
76 #
77 # - In linux-raspberrypi, we add do_configure_prepend, which tweaks
78 # ${B}.config. Since this runs *before* the kernel.bbclass do_configure,
79 # ${B}.config doesn't yet exist and we hit an error. Thus we need to move
80 # the logic from do_configure up to before our do_configure_prepend. Because
81 # we are copying only a portion of do_configure and not the whole thing,
82 # there is no clean way to do it using OE functionality, so we just
83 # copy-and-paste.
84 if [ "${S}" != "${B}" ] && [ -f "${S}/.config" ] && [ ! -f "${B}/.config" ]; then
85 mv "${S}/.config" "${B}/.config"
86 fi
87
88 # Copy defconfig to .config if .config does not exist. This allows
89 # recipes to manage the .config themselves in do_configure_prepend().
90 if [ -f "${WORKDIR}/defconfig" ] && [ ! -f "${B}/.config" ]; then
91 cp "${WORKDIR}/defconfig" "${B}/.config"
92 fi
93}
94
Brad Bishopd7bf8c12018-02-25 22:55:05 -050095do_configure_prepend() {
Brad Bishop316dfdd2018-06-25 12:45:53 -040096 config_setup
97
Brad Bishopd7bf8c12018-02-25 22:55:05 -050098 mv -f ${B}/.config ${B}/.config.patched
99 CONF_SED_SCRIPT=""
100
Brad Bishopd7bf8c12018-02-25 22:55:05 -0500101 # Localversion
102 kernel_configure_variable LOCALVERSION "\"\""
Brad Bishopd7bf8c12018-02-25 22:55:05 -0500103
Brad Bishopd7bf8c12018-02-25 22:55:05 -0500104 if [ ! -z "${KERNEL_INITRAMFS}" ]; then
Brad Bishopd7bf8c12018-02-25 22:55:05 -0500105 kernel_configure_variable OVERLAY_FS y
106 kernel_configure_variable SQUASHFS y
107 kernel_configure_variable UBIFS_FS y
108 fi
Brad Bishopd7bf8c12018-02-25 22:55:05 -0500109
110 # Activate the configuration options for VC4
111 VC4GRAPHICS="${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "1", "0", d)}"
112 if [ ${VC4GRAPHICS} = "1" ]; then
113 kernel_configure_variable I2C_BCM2835 y
114 kernel_configure_variable DRM y
115 kernel_configure_variable DRM_FBDEV_EMULATION y
116 kernel_configure_variable DRM_VC4 y
117 fi
118
119 # Keep this the last line
120 # Remove all modified configs and add the rest to .config
121 sed -e "${CONF_SED_SCRIPT}" < '${B}/.config.patched' >> '${B}/.config'
122 rm -f ${B}/.config.patched
Brad Bishopd7bf8c12018-02-25 22:55:05 -0500123}
124
125do_compile_append_raspberrypi3-64() {
126 cc_extra=$(get_cc_option)
127 oe_runmake dtbs CC="${KERNEL_CC} $cc_extra " LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS}
Patrick Williams8b8bc412016-08-17 15:02:23 -0500128}
129
Patrick Williams8b8bc412016-08-17 15:02:23 -0500130do_deploy_append() {
131 # Deploy cmdline.txt
132 install -d ${DEPLOYDIR}/bcm2835-bootfiles
133 PITFT="${@bb.utils.contains("MACHINE_FEATURES", "pitft", "1", "0", d)}"
134 if [ ${PITFT} = "1" ]; then
135 PITFT_PARAMS="fbcon=map:10 fbcon=font:VGA8x8"
136 fi
137 echo "${CMDLINE}${PITFT_PARAMS}" > ${DEPLOYDIR}/bcm2835-bootfiles/cmdline.txt
138}