10fc3fa81d
QEMU is supported on both 32-bit and 64-bit RISC-V hosts, so let's enable support for it in buildroot. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
161 lines
4.7 KiB
Plaintext
161 lines
4.7 KiB
Plaintext
config BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
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bool
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# Only tested on these architectures
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default y if BR2_aarch64
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default y if BR2_arm && !BR2_ARM_CPU_ARMV4 && !BR2_ARM_CPU_ARMV5
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default y if BR2_i386
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default y if BR2_mips
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default y if BR2_mipsel
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default y if BR2_powerpc64
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default y if BR2_powerpc64le
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default y if BR2_riscv
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default y if BR2_x86_64
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comment "QEMU requires a toolchain with wchar, threads, gcc >= 8"
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depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
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depends on BR2_USE_MMU
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depends on !(BR2_TOOLCHAIN_HAS_THREADS && BR2_USE_WCHAR) || \
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!BR2_TOOLCHAIN_GCC_AT_LEAST_8
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config BR2_PACKAGE_QEMU
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bool "QEMU"
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depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
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depends on BR2_TOOLCHAIN_GCC_AT_LEAST_8
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depends on BR2_TOOLCHAIN_HAS_THREADS
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depends on BR2_USE_WCHAR # gettext
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depends on BR2_USE_MMU # fork()
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select BR2_PACKAGE_LIBGLIB2
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select BR2_PACKAGE_PIXMAN
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select BR2_PACKAGE_ZLIB
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help
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QEMU is a generic and open source machine emulator and
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virtualizer.
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When used as a machine emulator, QEMU can run OSes and
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programs made for one machine (e.g. an ARM board) on a
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different machine (e.g. your own PC). By using dynamic
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translation, it achieves very good performance.
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When used as a virtualizer, QEMU achieves near native
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performances by executing the guest code directly on the
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host CPU. QEMU supports virtualization when executing under
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the Xen hypervisor or using the KVM kernel module in
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Linux. When using KVM, QEMU can virtualize x86, server and
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embedded PowerPC, and S390 guests.
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http://qemu.org/
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if BR2_PACKAGE_QEMU
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comment "Emulators selection"
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config BR2_PACKAGE_QEMU_CUSTOM_TARGETS
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string "Enable specific targets"
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help
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Enter here the list of QEMU targets you want to build. For
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example:
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System emulation | User-land emulation
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----------------------+-----------------------
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i386-softmmu | i386-linux-user
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arm-softmmu | ppc-linux-user
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x86_64-softmmu | sparc-bsd-user
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... | ...
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comment "Networking options"
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config BR2_PACKAGE_QEMU_SLIRP
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bool "Enable user mode networking (SLIRP)"
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select BR2_PACKAGE_SLIRP
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help
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Enable user mode network stack, which is the default
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networking backend. It requires no administrator privileges
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and generally is the easiest to use but has some
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limitations:
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- there is a lot of overhead so the performance is poor;
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- in general ICMP does not work (can't ping from/to a guest)
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- on Linux hosts, ping does work from within the guest, but it
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needs initial setup by root (once per host)
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- the guest is not directly accessible from the host or the
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external network
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User Networking is implemented using "slirp", which provides a
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full TCP/IP stack within QEMU and uses that stack to implement
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a virtual NAT'd network.
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Notice that this option does not disable other networking
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modes.
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if BR2_PACKAGE_QEMU_CUSTOM_TARGETS = ""
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comment "... or you can select emulator families to enable, below:"
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config BR2_PACKAGE_QEMU_SYSTEM
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bool "Enable all systems emulation"
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depends on !BR2_STATIC_LIBS # dtc
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select BR2_PACKAGE_QEMU_FDT
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help
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Say 'y' to build all system emulators/virtualisers that QEMU
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supports.
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comment "systems emulation needs a toolchain w/ dynamic library"
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depends on BR2_STATIC_LIBS
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config BR2_PACKAGE_QEMU_LINUX_USER
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bool "Enable all Linux user-land emulation"
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# Incompatible "struct sigevent" definition on musl
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depends on !BR2_TOOLCHAIN_USES_MUSL
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help
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Say 'y' to build all Linux user-land emulators that QEMU
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supports.
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# Note: bsd-user can not be build on Linux
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comment "Linux user-land emulation needs a glibc or uClibc toolchain"
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depends on BR2_TOOLCHAIN_USES_MUSL
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endif # BR2_PACKAGE_QEMU_CUSTOM_TARGETS == ""
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config BR2_PACKAGE_QEMU_HAS_EMULS
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def_bool y
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depends on BR2_PACKAGE_QEMU_SYSTEM || BR2_PACKAGE_QEMU_LINUX_USER || BR2_PACKAGE_QEMU_CUSTOM_TARGETS != ""
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if BR2_PACKAGE_QEMU_HAS_EMULS
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comment "Frontends"
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config BR2_PACKAGE_QEMU_SDL
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bool "Enable SDL frontend"
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depends on !BR2_STATIC_LIBS # sdl2
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select BR2_PACKAGE_SDL2
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help
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Say 'y' to enable the SDL frontend, that is, a graphical
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window presenting the VM's display.
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comment "SDL frontend needs a toolchain w/ dynamic library"
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depends on BR2_STATIC_LIBS
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comment "Misc. features"
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config BR2_PACKAGE_QEMU_FDT
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bool "Enable FDT"
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depends on !BR2_STATIC_LIBS # dtc
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select BR2_PACKAGE_DTC
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help
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Say 'y' here to have QEMU capable of constructing Device
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Trees, and passing them to the VMs.
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comment "FDT support needs a toolchain w/ dynamic library"
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depends on BR2_STATIC_LIBS
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endif # BR2_PACKAGE_QEMU_HAS_EMULS
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config BR2_PACKAGE_QEMU_TOOLS
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bool "Enable tools"
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help
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Say 'y' here to include tools packaged with QEMU
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(e.g. qemu-img).
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endif # BR2_PACKAGE_QEMU
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