ARM: Add a new arch + board for QEMU's 'virt' machine
authorTuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Tue, 19 Sep 2017 20:18:07 +0000 (23:18 +0300)
committerTom Rini <trini@konsulko.com>
Fri, 6 Oct 2017 15:28:16 +0000 (11:28 -0400)
commit32f11829266f2ede9afac051f980d4ae9b52f963
treec04cf39d1440814c1018564292a52c1eaf78be77
parent3675cb044e68bc1145444f3c4f9af5c02864607b
ARM: Add a new arch + board for QEMU's 'virt' machine

This board builds an U-Boot binary that is bootable with QEMU's 'virt'
machine on ARM. The minimal QEMU command line is:

    qemu-system-arm -machine virt,highmem=off -bios u-boot.bin

(Note that the 'highmem=off' parameter to the 'virt' machine is required for
PCI to work in U-Boot.) This command line enables the following:
    - u-boot.bin loaded and executing in the emulated flash at address 0x0
    - A generated device tree blob placed at the start of RAM
    - A freely configurable amount of RAM, described by the DTB
    - A PL011 serial port, discoverable via the DTB
    - An ARMv7 architected timer
    - PSCI for rebooting the system
    - A generic ECAM-based PCI host controller, discoverable via the DTB

Additionally, QEMU allows plugging a bunch of useful peripherals to the PCI bus.
The following ones are supported by both U-Boot and Linux:

- To add a Serial ATA disk via an Intel ICH9 AHCI controller, pass e.g.:
    -drive if=none,file=disk.img,id=mydisk -device ich9-ahci,id=ahci -device ide-drive,drive=mydisk,bus=ahci.0
- To add an Intel E1000 network adapter, pass e.g.:
    -net nic,model=e1000 -net user
- To add an EHCI-compliant USB host controller, pass e.g.:
    -device usb-ehci,id=ehci
- To add a NVMe disk, pass e.g.:
    -drive if=none,file=disk.img,id=mydisk -device nvme,drive=mydisk,serial=foo

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
arch/arm/Kconfig
arch/arm/mach-qemu/Kconfig [new file with mode: 0644]
board/emulation/qemu-arm/MAINTAINERS [new file with mode: 0644]
board/emulation/qemu-arm/Makefile [new file with mode: 0644]
board/emulation/qemu-arm/qemu-arm.c [new file with mode: 0644]
configs/qemu_arm_defconfig [new file with mode: 0644]
include/configs/qemu-arm.h [new file with mode: 0644]