[linux-yocto] [kernel-cache][PATCHv2 1/1] bsp/beaglebone: support qemu -machine virt
Purpose: Support booting a beaglebone image with runqemu. If the kernel supports Qemu's virt machine, runqemu works almost for free. The device tree for machine virt is included in Qemu, which simplifies everything quite a bit. This change adds ARCH_VIRT=y and some drivers to the beaglebone kernel configuration which allows to: export MACHINE="beaglebone-yocto" bitbake core-image-minimale runqemu This also works out of an eSDK. Whithout this feature usually two different SDKs need to be compiled and maintained. One SDK is used for development in Qemu, another one is used to develop for the real target hardware. [Yocto #13384] Signed-off-by: Adrian Freihofer --- bsp/beaglebone/beaglebone.scc | 5 + bsp/beaglebone/qemu-bb.cfg| 9 + bsp/beaglebone/qemu-bb.scc| 1 + 3 files changed, 15 insertions(+) create mode 100644 bsp/beaglebone/qemu-bb.cfg create mode 100644 bsp/beaglebone/qemu-bb.scc diff --git a/bsp/beaglebone/beaglebone.scc b/bsp/beaglebone/beaglebone.scc index 4b15ec06..2a5e67b1 100644 --- a/bsp/beaglebone/beaglebone.scc +++ b/bsp/beaglebone/beaglebone.scc @@ -5,3 +5,8 @@ include features/usb-net/usb-net.scc include features/input/input.scc include cfg/usb-mass-storage.scc include wifi.scc + +# With these addons, runqemu just works (-machine virt) +# The size of the zImage is increased by 168k for kernel 5.0. +include cfg/virtio.scc +include qemu-bb.scc diff --git a/bsp/beaglebone/qemu-bb.cfg b/bsp/beaglebone/qemu-bb.cfg new file mode 100644 index ..28b3d4ec --- /dev/null +++ b/bsp/beaglebone/qemu-bb.cfg @@ -0,0 +1,9 @@ +CONFIG_ARCH_VIRT=y +CONFIG_SERIAL_AMBA_PL011=y +CONFIG_SERIAL_AMBA_PL011_CONSOLE=y +CONFIG_SPI=y +CONFIG_SPI_PL022=y +CONFIG_ARM_SP805_WATCHDOG=y +CONFIG_RTC_DRV_PL031=y +CONFIG_PL330_DMA=y +CONFIG_ARM_TIMER_SP804=y diff --git a/bsp/beaglebone/qemu-bb.scc b/bsp/beaglebone/qemu-bb.scc new file mode 100644 index ..8bbcae8d --- /dev/null +++ b/bsp/beaglebone/qemu-bb.scc @@ -0,0 +1 @@ +kconf hardware qemu-bb.cfg -- 2.11.0 -- ___ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
[linux-yocto] [kernel-cache][PATCHv2 0/1] qemu support for ARM devices
Hi, Bruce, Compared to v1, this is more or less a rewrite. It is now very similar to the qemuarma15 BSP as suggested by you. The qemuarm15 BSP generates a kernel of 7046128 bytes. The current Beaglebone yocto configuration produces a kernel of 6451976 bytes. In addition to the configuration flags already set in the Beaglebone configuration, the qemuarm15 configuration includes cfg/virtio.scc and qemuarma15.scc. The virtio.scc is well suited for both. The qemuarma15.scc is too heavy for the Beaglebone, mainly due to SMP and NEON. The kernel configuration with this patch results in a Beaglebone kernel with a size of 6623704 bytes, which is a plus of ~170k. But this makes it possible to start the Beaglebone images in Qemu with graphics. Adrian Freihofer (1): bsp/beaglebone: support qemu -machine virt bsp/beaglebone/beaglebone.scc | 5 + bsp/beaglebone/qemu-bb.cfg| 9 + bsp/beaglebone/qemu-bb.scc| 1 + 3 files changed, 15 insertions(+) create mode 100644 bsp/beaglebone/qemu-bb.cfg create mode 100644 bsp/beaglebone/qemu-bb.scc -- 2.11.0 -- ___ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
[linux-yocto] [kernel-cache][PATCH 0/2] qemu support for ARM devices
The purpose/idea is documented here: https://bugzilla.yoctoproject.org/show_bug.cgi?id=13384 Adrian Freihofer (2): features: add qemu-guest bsp/beaglebone: include qemu-guest feature bsp/beaglebone/beaglebone.scc | 1 + features/qemu-guest/qemu-arm-virt.cfg | 10 ++ features/qemu-guest/qemu-arm-virt.scc | 4 3 files changed, 15 insertions(+) create mode 100644 features/qemu-guest/qemu-arm-virt.cfg create mode 100644 features/qemu-guest/qemu-arm-virt.scc -- 2.11.0 -- ___ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
[linux-yocto] [kernel-cache][PATCH 1/2] features: add qemu-guest
Purpose: Provide an easy way to add ARCH_VIRT=y to the kernel configuration. This allows to boot ARM images compiled for real hardware in Qemu as well. Including this feature e.g. into the Beaglebone BSP allows to: export MACHINE="beaglebone-yocto" bitbake core-image-minimale runqemu This also works with the eSDK. Whithout this feature usually two different SDKs need to be compiled and maintained. One SDK is used for development in Qemu, another one is used to develop for the real target hardware. Note: For newer aarch64 devices a pci variant of this config snipped might be beneficial. [Yocto #13384] Signed-off-by: Adrian Freihofer --- features/qemu-guest/qemu-arm-virt.cfg | 10 ++ features/qemu-guest/qemu-arm-virt.scc | 4 2 files changed, 14 insertions(+) create mode 100644 features/qemu-guest/qemu-arm-virt.cfg create mode 100644 features/qemu-guest/qemu-arm-virt.scc diff --git a/features/qemu-guest/qemu-arm-virt.cfg b/features/qemu-guest/qemu-arm-virt.cfg new file mode 100644 index ..7aec61de --- /dev/null +++ b/features/qemu-guest/qemu-arm-virt.cfg @@ -0,0 +1,10 @@ +CONFIG_ARCH_VIRT=y +CONFIG_VIRTIO_BLK=y +CONFIG_VIRTIO_BLK_SCSI=y +CONFIG_VIRTIO_NET=y +CONFIG_SERIAL_AMBA_PL011=y +CONFIG_SERIAL_AMBA_PL011_CONSOLE=y +CONFIG_HW_RANDOM=y +CONFIG_HW_RANDOM_VIRTIO=y +CONFIG_VIRTIO_MMIO=y +CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y diff --git a/features/qemu-guest/qemu-arm-virt.scc b/features/qemu-guest/qemu-arm-virt.scc new file mode 100644 index ..54682dcf --- /dev/null +++ b/features/qemu-guest/qemu-arm-virt.scc @@ -0,0 +1,4 @@ +define KFEATURE_DESCRIPTION "Enable options for ARM images in Qemu" +define KFEATURE_COMPATIBILITY board + +kconf hardware qemu-arm-virt.cfg -- 2.11.0 -- ___ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
