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xen, raspi4, linux-yocto-dev: Enable Xen on Raspberry Pi 4

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Enable linux-yocto-dev as the Linux kernel for Xen on the
Raspberry Pi 4, with the bcm-2xxx-rpi4 KMACHINE and KBRANCH.

Set a Raspberry Pi SD card variable to increase the size of the boot
partition to accommodate both the kernel and the Xen hypervisor.

Signed-off-by: Christopher Clark <christopher.w.clark@gmail.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
This commit is contained in:
Christopher Clark 2020-08-07 00:05:03 -07:00 committed by Bruce Ashfield
parent 066225be3a
commit dc08df210c
2 changed files with 14 additions and 0 deletions
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4
conf/distro/include/meta-virt-xen.inc
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@ -17,3 +17,7 @@ RPI_SDIMG_EXTRA_DEPENDS_append_raspberrypi4-64 = " xen:do_deploy"
DEPLOYPAYLOAD_raspberrypi4-64 = "xen-${MACHINE}:xen"
# We need the GIC enabled for Xen to work
RPI_EXTRA_CONFIG_append_raspberrypi4-64 = "\nenable_gic=1"
# Increase boot partition for space for kernel and Xen
BOOT_SPACE_raspberrypi4-64 = "61440"
# Override the meta-raspberrypi default kernel preference
PREFERRED_PROVIDER_virtual/kernel_raspberrypi4-64 = "linux-yocto-dev"

10
dynamic-layers/raspberrypi/recipes-kernel/linux/linux-yocto-dev.bbappend Normal file
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@ -0,0 +1,10 @@
# For a Xen-enabled distro on the Raspberry Pi, override the contents of cmdline.txt
# with Xen-on-ARM-specific command line options
DEFAULT_CMDLINE := "${CMDLINE}"
XEN_LINUX_CMDLINE ?= "console=hvc0 clk_ignore_unused earlycon=xenboot debug root=/dev/mmcblk0p2 rootwait"
CMDLINE = "${@bb.utils.contains('DISTRO_FEATURES', 'xen', '${XEN_LINUX_CMDLINE}', '${DEFAULT_CMDLINE}', d)}"
KBRANCH_raspberrypi4-64 = "standard/bcm-2xxx-rpi"
KMACHINE_raspberrypi4-64 = "bcm-2xxx-rpi4"
COMPATIBLE_MACHINE_raspberrypi4-64 = "(raspberrypi4-64)"