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README.txt2021-Sep-21 22:14:592.7Ktext/plain; charset=utf-8
alpha-mmclock-qemu.patch2021-Jul-29 19:05:230.7Ktext/x-diff; charset=utf-8
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- thanks to @thorpej for making the Qemu patches 
------------------------------------------------------------------

# First git clone qemu sources 
# (Make sure you have all the dependencies needed to build qemu from source) 
# Read https://wiki.qemu.org/Hosts/Linux 

git clone https://github.com/qemu/qemu 

cd qemu
wget http://45.76.81.249/AXP/NetBSD/alpha-mmclock-qemu.patch 
patch -p1 < alpha-mmclock-qemu.patch 
./configure --target-list=alpha-softmmu 
make 
sudo make install 

# To install NetBSD-current Alpha 
# Download the current ISO installer 

wget http://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/latest/images/NetBSD-9.99.87-alpha.iso 
mv NetBSD-9.99.87-alpha.iso netbsd.iso 

# Create a loader for qemu -> save as run.sh and make executable 

qemu-system-alpha \
-m 1024 \
-kernel NETBSD \
-drive file=disk.img,media=disk,format=qcow2,index=0 \
-drive file=netbsd.iso,media=cdrom,format=raw,index=1 \
-net nic \
-net user,hostfwd=tcp::2222-:22 

# the NETBSD kernel (installation one) from the ISO 

sudo mount -o loop netbsd.iso /mnt/cdrom 
cp /mnt/cdrom/NETBSD . 
sudo umount /mnt/cdrom 
 

# Setup a disk for the installation 

qemu-img create -f qcow2 disk.img 20G 

# Run the loader script  

./run.sh 

# Install NetBSD Normally 
# Once done a full setup shutdown the VM 
# shutdown -p now

# Download the QEMU NetBSD kernel 

wget http://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/latest/alpha/binary/kernel/netbsd-GENERIC.QEMU.gz 
gunzip netbsd-GENERIC.QEMU.gz 

# Change the run.sh to reflect the new kernel (not NETBSD the installer one) 
# And add the append to point to proper rootfs on wd0a 

qemu-system-alpha \
-m 1024 \
-kernel netbsd-GENERIC.QEMU \
-append "-root=wd0a -dump=wd0b" \
-drive file=disk.img,media=disk,format=qcow2,index=0 \
-drive file=netbsd.iso,media=cdrom,format=raw,index=1 \
-net nic \
-net user,hostfwd=tcp::2222-:22

# run 
# Once loaded tell the kernel that rootfs is on wd0 
# And hit enter for the swap and init (defaults) 
# you should boot to the installed NetBSD Alpha 

# One observation that seems to speedup the whole emulation experience is 
# to disable IPV6 on dhcpcd if you run qemu under MacOS BigSur (M1) 

# Simply add the following to your /etc/rc.conf 
dhcpcd_flags=" -4 -qM wm0" 


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