qemu

qemu/run_qemu_shell.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+set -eu
+
+DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+TMPDIR=${TMPDIR:-"$DIR/tmp"}
+export TMPDIR
+
+ROOTFS="$DIR/images/alpine"
+ROOTFS_GZ="$ROOTFS.gz"
+
+mkdir -p "$TMPDIR"
+
+if [ ! -e "$ROOTFS" ]; then
+  if [ ! -f "$ROOTFS_GZ" ]; then
+    echo "missing rootfs: $ROOTFS_GZ" >&2
+    exit 1
+  fi
+
+  ROOTFS_TMP="$ROOTFS.$$"
+  trap 'rm -f "$ROOTFS_TMP"' EXIT HUP INT TERM
+  gzip -dc "$ROOTFS_GZ" > "$ROOTFS_TMP"
+  mv "$ROOTFS_TMP" "$ROOTFS"
+  trap - EXIT HUP INT TERM
+fi
+
+exec "$DIR/qemu-system-x86_64" \
+  -accel tcg \
+  -machine q35,cxl=on \
+  -m 512M,maxmem=2G,slots=4 \
+  -smp 1 \
+  -nographic -no-reboot -snapshot \
+  -kernel "$DIR/images/vmlinuz-linux" \
+  -append "root=/dev/vda rw console=ttyS0,115200 earlycon=uart8250,io,0x3f8,115200 loglevel=8 ignore_loglevel printk.time=1 devtmpfs.mount=1 pci=realloc" \
+  -drive file="$ROOTFS",file.locking=off,if=none,format=raw,id=rootfs \
+  -device virtio-blk-pci,drive=rootfs \
+  -device pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52 \
+  -device cxl-rp,id=rp0,bus=cxl.0,chassis=0,slot=0 \
+  -object memory-backend-ram,id=cxl-mem0,size=256M \
+  -object memory-backend-ram,id=dc-mem0,size=256M \
+  -device cxl-type3,bus=rp0,volatile-memdev=cxl-mem0,volatile-dc-memdev=dc-mem0,num-dc-regions=1,id=mem0 \
+  -M cxl-fmw.0.targets.0=cxl.0,cxl-fmw.0.size=512M