kumquat-buildroot/board/qemu/x86
Romain Naour 80a044703a configs/qemu: update defconfigs to Linux 5.4.35
Linux version are changed to the new LTS kernel 5.4.35 for all qemu
defconfigs, except for riscv and csky. Thoses defconfigs are left
unchanged because they require either a custom Linux repository
or a specific kernel header version causing some difficulties when
upgrading to 5.4.35.

Update the nios2-10m50 linux.fragment to update the .dtb build directory
due to a change in kernel 4.20 [1]:

    nios2: build .dtb files in dts directory

    Align nios2 with other architectures which build the dtb files in the
    same directory as the dts files. This is also in line with most other
    build targets which are located in the same directory as the source.
    This move will help enable the 'dtbs' target which builds all the dtbs
    regardless of kernel config.

    This transition could break some scripts if they expect dtb files in
    the old location.

For x86 and x86_64 kernel, add the CONFIG_PCI symbol due a change in kernel
5.0 [2]. The option was previously enabled by default (default y).

    PCI: consolidate PCI config entry in drivers/pci

    There is no good reason to duplicate the PCI menu in every architecture.
    Instead provide a selectable HAVE_PCI symbol that indicates availability
    of PCI support, and a FORCE_PCI symbol to for PCI on and the handle the
    rest in drivers/pci.

Update the kernel of ppc-mac99 defconfig added in Buildroot 2019.08.

This version bump was tested on gitlab [4] using the newly introduced
boot-qemu-image.py script [5].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=118864869805123bf82d666062542440a0fda5dd
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=eb01d42a77785ff96b6e66a2a2e7027fc6d78e4a
[3] a8fac3fcfc
[4] https://gitlab.com/kubu93/buildroot/pipelines/139819874
[5] 0c79350638

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-04-25 22:19:29 +02:00
..
linux.config configs/qemu: update defconfigs to Linux 5.4.35 2020-04-25 22:19:29 +02:00
post-build.sh configs/qemu{x86, x86_64}: add a serial console 2020-02-16 22:24:56 +01:00
readme.txt board/qemu: add defconfig file name as tag after the qemu command line 2020-04-13 21:51:12 +02:00

Run the emulation with:

  qemu-system-i386 -M pc -kernel output/images/bzImage -drive file=output/images/rootfs.ext2,if=virtio,format=raw -append "rootwait root=/dev/vda console=tty1 console=ttyS0" -serial stdio -net nic,model=virtio -net user # qemu_x86_defconfig

Optionally add -smp N to emulate a SMP system with N CPUs.

The login prompt will appear in the graphical window.

Tested with QEMU 2.12.0