Hi Lukas, On Mon, Sep 17, 2018 at 5:02 AM Auer, Lukas <lukas.a...@aisec.fraunhofer.de> wrote: > > Hi Bin, > > On Mon, 2018-09-10 at 21:54 -0700, Bin Meng wrote: > > This adds QEMU RISC-V 'virt' board target support, with the hope of > > helping people easily test U-Boot on RISC-V. > > > > The QEMU virt machine models a generic RISC-V virtual machine with > > support for the VirtIO standard networking and block storage devices. > > It has CLINT, PLIC, 16550A UART devices in addition to VirtIO and > > it also uses device-tree to pass configuration information to guest > > software. It implements RISC-V privileged architecture spec v1.10. > > > > Both 32-bit and 64-bit builds are supported. Support is pretty much > > preliminary, only booting to U-Boot shell with the UART driver on > > a single core. Booting Linux is not supported yet. > > > > Signed-off-by: Bin Meng <bmeng...@gmail.com> > > > > --- > > Reviewed-by: Lukas Auer <lukas.a...@aisec.fraunhofer.de> > > [snip] > > > > > diff --git a/board/emulation/qemu-riscv/Kconfig > > b/board/emulation/qemu-riscv/Kconfig > > new file mode 100644 > > index 0000000..029f5efb > > --- /dev/null > > +++ b/board/emulation/qemu-riscv/Kconfig > > @@ -0,0 +1,21 @@ > > +if TARGET_QEMU_VIRT > > + > > +config SYS_BOARD > > + default "qemu-riscv" > > + > > +config SYS_VENDOR > > + default "emulation" > > + > > +config SYS_CPU > > + default "qemu" > > + > > +config SYS_CONFIG_NAME > > + default "qemu-riscv" > > + > > +config SYS_TEXT_BASE > > + default 0x80000000 > > + > > +config BOARD_SPECIFIC_OPTIONS # dummy > > + def_bool y > > + > > Out of curiosity, what is BOARD_SPECIFIC_OPTIONS used for? I see that > other boards have included it as well, but I don't see it actually used > anywhere.
This option is used to select or imply some board-specific options, mostly drivers, so that we can avoid specifying them in the board defconfig files. I think I should have at least moved the CONFIG_SYS_NS16550 here. I am also working on virtio drivers, and once they are done, these drivers can be implied here too. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
