Xen ARM with Virtualization Extensions/Lager

The Lager board based on Renesas R-Car H2 SoC is now supported in Xen upstream.

Prepare U-boot

Get u-boot sources

Clone sources from: git://git.denx.de/u-boot.git Checkout on commit, hash: f7ca1f7, net: sh-eth: Add cache writeback control after setting bit of DMA descriptor

Apply additional patches

Download archive with needed patches (renesas_uboot_patches.tar) from: [1]

Apply patches from renesas_uboot_patches.tar

Build u-boot

Build u-boot with "lager_xen_defconfig" configuration:

# make lager_xen_defconfig ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

Flash u-boot

Flash u-boot to QSPI as described in Start-Up Guide fot Renesas Lager board.

Check u-boot environment variables

bootargs=console=ttySC6,38400
bootcmd=tftp 0x70007fc0 xen-uImage;tftp 0x70f00000 uImage-r8a7790-lager.dtb;tftp 0x72000000 zImage-uImage;tftp 0x74000000 xenpolicy;bootm 0x70007fc0 – 0x70f00000

where:

• xen-uImage – Xen image
• uImage-r8a7790-lager.dtb – device tree blob
• zImage-uImage – Dom0 kernel image
• xenpolicy – Xen policy binary

Prepare Xen

Get Xen source

Clone sources from upstream: git://xenbits.xen.org/xen.git Checkout on branch: stable-4.5

Apply patches from Mailing List

Three patches were posted to [xen-devel] that need to be applied. Make sure it is the most recent version posted: http://markmail.org/message/houjwx7vima3a53i

Configure Xen

# XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- debug=y XSM_ENABLE=y CONFIG_EARLY_PRINTK=lager ./configure

Build Xen

Build Xen with command with earlyprintk support:

# make xen XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- debug=y XSM_ENABLE=y CONFIG_EARLY_PRINTK=lager

Build Xen with command without earlyprintk support:

# make xen XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- debug=y XSM_ENABLE=y

Make uImage for Xen

Make uImage for Xen with command:

# mkimage -A arm -C none -T kernel -a 0x90000000 -e 0x90000000 -n "XEN" -d xen/xen xen-uImage

Build xenpolicy

Build xenpolicy binary:

# make -C tools/flask/policy

Prepare Dom0 / Device Tree

(TBD)

Prepare other domains

(TBD)