From 3d037b42b4a23b8c2b87eac8a4d1ad59d7b674fa Mon Sep 17 00:00:00 2001
From: Yousong Zhou <yszhou4tech@gmail.com>
Date: Thu, 23 May 2019 07:41:20 +0000
Subject: [PATCH] scripts/qemustart: add riscv64 support

---
 scripts/qemustart | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/scripts/qemustart b/scripts/qemustart
index dbb8deddaf..c860ab88d6 100755
--- a/scripts/qemustart
+++ b/scripts/qemustart
@@ -248,6 +248,41 @@ start_qemu_malta() {
 		"${o_qemu_extra[@]}"
 }
 
+start_qemu_riscv() {
+	local is64
+	local qemu_exe
+	local rootfs="$o_rootfs"
+	local kernel="$o_kernel"
+	local mach="${o_mach:-virt}"
+
+	# o_subtarget can be xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx, etc..
+	is64="$(echo $o_subtarget | grep -o 64)"
+	qemu_exe="qemu-system-riscv$is64"
+
+	[ -n "$kernel" ] || kernel="$o_bindir/openwrt-riscv64-${o_subtarget%-*}-vmlinux-initramfs.elf"
+
+	[ -z "$rootfs" ] || {
+		if [ ! -f "$rootfs" -a -s "$rootfs.gz" ]; then
+			gunzip "$rootfs.gz"
+		fi
+		o_qemu_extra+=( \
+			"-drive" "file=$rootfs,format=raw" \
+			"-append" "root=/dev/sda rootwait" \
+		)
+	}
+
+	[ -z "$o_network" ] || {
+		o_qemu_extra+=(
+			-netdev bridge,id=wan,br="$BR_WAN,helper=$HELPER" -device pcnet,netdev=wan,mac="$MAC_WAN"
+			-netdev bridge,id=lan,br="$BR_LAN,helper=$HELPER" -device pcnet,netdev=lan,mac="$MAC_LAN"
+		)
+	}
+
+	"$qemu_exe" -machine "$mach" -nographic \
+		-kernel "$kernel" \
+		"${o_qemu_extra[@]}"
+}
+
 start_qemu_x86() {
 	local qemu_exe
 	local kernel="$o_kernel"
@@ -327,6 +362,7 @@ start_qemu() {
 	case "$o_target" in
 		armvirt)	start_qemu_armvirt	;;
 		malta)		start_qemu_malta	;;
+		riscv)		start_qemu_riscv	;;
 		x86)		start_qemu_x86		;;
 		*)
 			__errmsg "target $o_target is not supported yet"
-- 
2.30.2