doc: qemu-riscv: Update QEMU run command

Explicitly pass the "-bios" option to QEMU to run U-Boot, instead
of the "-kernel" option, as we know that "-bios" behavior will be
changed since QEMU 5.1.0.

This also updates validated QEMU version to 5.0.0.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
index c390006..b68db95 100644 (file)
--- a/doc/board/emulation/qemu-riscv.rst
+++ b/doc/board/emulation/qemu-riscv.rst
@@ -40,11 +40,11 @@ The minimal QEMU command line to get U-Boot up and running is:
 
 - For 32-bit RISC-V::
 
-    qemu-system-riscv32 -nographic -machine virt -kernel u-boot
+    qemu-system-riscv32 -nographic -machine virt -bios u-boot
 
 - For 64-bit RISC-V::
 
-    qemu-system-riscv64 -nographic -machine virt -kernel u-boot
+    qemu-system-riscv64 -nographic -machine virt -bios u-boot
 
 The commands above create targets with 128MiB memory by default.
 A freely configurable amount of RAM can be created via the '-m'
@@ -56,7 +56,7 @@ For instructions on how to run U-Boot in supervisor mode on QEMU
 with OpenSBI, see the documentation available with OpenSBI:
 https://github.com/riscv/opensbi/blob/master/docs/platform/qemu_virt.md
 
-These have been tested in QEMU 4.2.0.
+These have been tested in QEMU 5.0.0.
 
 Running U-Boot SPL
 ------------------
@@ -98,10 +98,10 @@ configurations are:
 
 - For 32-bit RISC-V::
 
-    qemu-system-riscv32 -nographic -machine virt -kernel spl/u-boot-spl \
+    qemu-system-riscv32 -nographic -machine virt -bios spl/u-boot-spl \
     -device loader,file=u-boot.itb,addr=0x80200000
 
 - For 64-bit RISC-V::
 
-    qemu-system-riscv64 -nographic -machine virt -kernel spl/u-boot-spl \
+    qemu-system-riscv64 -nographic -machine virt -bios spl/u-boot-spl \
     -device loader,file=u-boot.itb,addr=0x80200000