riscv: Add QEMU virt board support
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.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 49f87de..168ca3d 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -11,9 +11,13 @@
config TARGET_AX25_AE350
bool "Support ax25-ae350"
+config TARGET_QEMU_VIRT
+ bool "Support QEMU Virt Board"
+
endchoice
source "board/AndesTech/ax25-ae350/Kconfig"
+source "board/emulation/qemu-riscv/Kconfig"
choice
prompt "CPU selection"