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>
2017-09-19 20:18:07 +00:00
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if ARCH_QEMU
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config SYS_VENDOR
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default "emulation"
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config SYS_BOARD
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default "qemu-arm"
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config SYS_CONFIG_NAME
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default "qemu-arm"
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2020-04-10 07:37:21 +00:00
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choice
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prompt "QEMU ARM architecture"
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default TARGET_QEMU_ARM_64BIT
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2018-01-11 14:11:23 +00:00
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config TARGET_QEMU_ARM_32BIT
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2020-04-10 07:37:21 +00:00
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bool "ARMv7-A, 32bit"
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2018-01-11 14:11:23 +00:00
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select ARCH_SUPPORT_PSCI
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2018-07-23 13:55:15 +00:00
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select CPU_V7A
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2018-04-12 01:24:46 +00:00
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select SYS_ARCH_TIMER
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2018-01-11 14:11:23 +00:00
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config TARGET_QEMU_ARM_64BIT
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2020-04-10 07:37:21 +00:00
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bool "ARMv8, 64bit"
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2018-01-11 14:11:23 +00:00
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select ARM64
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2020-04-10 07:37:21 +00:00
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endchoice
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endif
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