Currently devices on the virtio bus is not automatically enumerated,
which means peripherals on the virtio bus are not discovered by their
drivers. This uses board_init() to do the virtio enumeration.

Signed-off-by: Bin Meng <bmeng...@gmail.com>
Reviewed-by: Simon Glass <s...@chromium.org>
---

Changes in v3: None
Changes in v2: None

 board/emulation/qemu-riscv/Kconfig      | 3 +++
 board/emulation/qemu-riscv/qemu-riscv.c | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/board/emulation/qemu-riscv/Kconfig 
b/board/emulation/qemu-riscv/Kconfig
index af23363..5ae56da 100644
--- a/board/emulation/qemu-riscv/Kconfig
+++ b/board/emulation/qemu-riscv/Kconfig
@@ -18,5 +18,8 @@ config SYS_TEXT_BASE
 config BOARD_SPECIFIC_OPTIONS # dummy
        def_bool y
        imply SYS_NS16550
+       imply VIRTIO_MMIO
+       imply VIRTIO_NET
+       imply VIRTIO_BLK
 
 endif
diff --git a/board/emulation/qemu-riscv/qemu-riscv.c 
b/board/emulation/qemu-riscv/qemu-riscv.c
index 041e716..2730a28 100644
--- a/board/emulation/qemu-riscv/qemu-riscv.c
+++ b/board/emulation/qemu-riscv/qemu-riscv.c
@@ -4,12 +4,21 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <fdtdec.h>
+#include <virtio_types.h>
+#include <virtio.h>
 
 #define MROM_FDT_ADDR  0x1020
 
 int board_init(void)
 {
+       /*
+        * Make sure virtio bus is enumerated so that peripherals
+        * on the virtio bus can be discovered by their drivers
+        */
+       virtio_init();
+
        return 0;
 }
 
-- 
2.7.4

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