Hi All. I made some changes :
a) Removed the changed from the dts file. Instead changed boot.cmd to ############################################################################# # SUNXI Xen Boot Script # Arch Linux ARM adaption of the cmd file which can be found at http://openmirage.org/wiki/xen-on-cubieboard2 # Addresses suitable for 1GB system, adjust as appropriate for a 2GB system. # Top of RAM: 0x80000000 # Xen relocate addr 0x7fe00000 setenv kernel_addr_r 0x7f600000 # 8M setenv ramdisk_addr_r 0x7ee00000 # 8M setenv fdt_addr 0x7ec00000 # 2M setenv xen_addr_r 0x7ea00000 # 2M setenv fdt_high 0xffffffff # Load fdt in place instead of relocating # Load xen/xen to ${xen_addr_r}. fatload mmc 0 ${xen_addr_r} /xen setenv bootargs "console=dtuart dtuart=/soc@01c00000/serial@01c28000 dom0_mem=256M" # Load appropriate .dtb file to ${fdt_addr} fatload mmc 0 ${fdt_addr} /sun7i-a20-cubieboard2.dtb fdt addr ${fdt_addr} 0x40000 fdt resize fdt chosen fdt set /chosen \#address-cells <1> fdt set /chosen \#size-cells <1> # Load Linux arch/arm/boot/zImage to ${kernel_addr_r} fatload mmc 0 ${kernel_addr_r} /vmlinuz fdt mknod /chosen module@0 fdt set /chosen/module@0 compatible "xen,linux-zimage" "xen,multiboot-module" fdt set /chosen/module@0 reg <${kernel_addr_r} 0x${filesize} > fdt set /chosen/module@0 bootargs "console=hvc0 rw root=/dev/mmcblk0p2 rootwait clk_ignore_unused" bootz ${xen_addr_r} - ${fdt_addr} ############################################################################# b) Now, when I boot, I get the following bootup-logs : ############################################################################# U-Boot SPL 2018.05-rc2-00118-gec5c4a8 (Apr 28 2018 - 08:40:48 +0530) DRAM: 1024 MiB CPU: 912000000Hz, AXI/AHB/APB: 3/2/2 Trying to boot from MMC1 U-Boot 2018.05-rc2-00118-gec5c4a8 (Apr 28 2018 - 08:40:48 +0530) Allwinner Technology CPU: Allwinner A20 (SUN7I) Model: Cubietech Cubieboard2 I2C: ready DRAM: 1 GiB MMC: SUNXI SD/MMC: 0 Loading Environment from FAT... *** Warning - bad CRC, using default environment Failed (-5) In: serial Out: serial Err: serial SCSI: SATA link 0 timeout. AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl SATA mode flags: ncq stag pm led clo only pmp pio slum part ccc apst Net: eth0: ethernet@01c50000 starting USB... USB0: USB EHCI 1.00 USB1: USB OHCI 1.0 USB2: USB EHCI 1.00 USB3: USB OHCI 1.0 scanning bus 0 for devices... 1 USB Device(s) found scanning bus 2 for devices... 1 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... Found U-Boot script /boot.scr 1344 bytes read in 17 ms (77.1 KiB/s) ## Executing script at 43100000 819208 bytes read in 66 ms (11.8 MiB/s) 26147 bytes read in 23 ms (1.1 MiB/s) 4076736 bytes read in 247 ms (15.7 MiB/s) ## Flattened Device Tree blob at 7ec00000 Booting using the fdt blob at 0x7ec00000 reserving fdt memory region: addr=7ec00000 size=7000 Using Device Tree in place at 7ec00000, end 7ec09fff Starting kernel ... - UART enabled - - CPU 00000000 booting - - Xen starting in Hyp mode - - Zero BSS - - Setting up control registers - - Turning on paging - - Ready - (XEN) Checking for initrd in /chosen (XEN) RAM: 0000000040000000 - 000000007fffffff (XEN) (XEN) MODULE[0]: 000000007ec00000 - 000000007ec07000 Device Tree (XEN) MODULE[1]: 000000007f600000 - 000000007f9e34c0 Kernel console=hvc0 rw root=/dev/mmcblk0p2 rootwait clk_ignore_unused (XEN) RESVD[0]: 000000007ec00000 - 000000007ec07000 (XEN) (XEN) Command line: console=dtuart dtuart=/soc@01c00000/serial@01c28000 dom0_mem=256M (XEN) Placing Xen at 0x000000007fe00000-0x0000000080000000 (XEN) Update BOOTMOD_XEN from 000000007ea00000-000000007eb0d781 => 000000007fe00000-000000007ff0d781 (XEN) Xen heap: 000000007c000000-000000007e000000 (8192 pages) (XEN) Dom heap: 253952 pages (XEN) Domain heap initialised (XEN) Booting using Device Tree (XEN) Platform: Allwinner ARMv7 (XEN) Looking for dtuart at "/soc@01c00000/serial@01c28000", options "" (XEN) Unable to find device "/soc@01c00000/serial@01c28000" (XEN) Bad console= option 'dtuart' Xen 4.11-unstable (XEN) Xen version 4.11-unstable (debian@) (gcc (Debian 4.6.3-14) 4.6.3) debug=y Mon Apr 30 04:52:58 UTC 2018 (XEN) Latest ChangeSet: Mon Apr 16 10:56:00 2018 +0000 git:a6aa678 (XEN) Processor: 410fc074: "ARM Limited", variant: 0x0, part 0xc07, rev 0x4 (XEN) 32-bit Execution: (XEN) Processor Features: 00001131:00011011 (XEN) Instruction Sets: AArch32 A32 Thumb Thumb-2 ThumbEE Jazelle (XEN) Extensions: GenericTimer Security (XEN) Debug Features: 02010555 (XEN) Auxiliary Features: 00000000 (XEN) Memory Model Features: 10101105 40000000 01240000 02102211 (XEN) ISA Features: 02101110 13112111 21232041 11112131 10011142 00000000 (XEN) Using SMC Calling Convention v1.0 (XEN) Using PSCI v0.1 (XEN) SMP: Allowing 2 CPUs (XEN) Generic Timer IRQ: phys=30 hyp=26 virt=27 Freq: 24000 KHz (XEN) GICv2 initialization: (XEN) gic_dist_addr=0000000001c81000 (XEN) gic_cpu_addr=0000000001c82000 (XEN) gic_hyp_addr=0000000001c84000 (XEN) gic_vcpu_addr=0000000001c86000 (XEN) gic_maintenance_irq=25 (XEN) GICv2: 160 lines, 2 cpus, secure (IID 0100143b). (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN) Allocated console ring of 16 KiB. (XEN) VFP implementer 0x41 architecture 2 part 0x30 variant 0x7 rev 0x4 (XEN) Bringing up CPU1 - CPU 00000001 booting - - Xen starting in Hyp mode - - Setting up control registers - - Turning on paging - - Ready - (XEN) CPU 1 booted. (XEN) Brought up 2 CPUs (XEN) P2M: 40-bit IPA (XEN) P2M: 3 levels with order-1 root, VTCR 0x80003558 (XEN) I/O virtualisation disabled (XEN) build-id: 5b458a2ea80127f76c657ac2621bcd437261f509 (XEN) alternatives: Patching with alt table 100af574 -> 100af5a4 (XEN) grant_table.c:1769:IDLEv0 Expanding d0 grant table from 0 to 1 frames (XEN) *** LOADING DOMAIN 0 *** (XEN) Loading kernel from boot module @ 000000007f600000 (XEN) Allocating 1:1 mappings totalling 256MB for dom0: (XEN) BANK[0] 0x00000060000000-0x00000070000000 (256MB) (XEN) Grant table range: 0x0000007fe00000-0x0000007fe40000 (XEN) Allocating PPI 16 for event channel interrupt (XEN) Loading zImage from 000000007f600000 to 0000000067c00000-0000000067fe34c0 (XEN) Loading dom0 DTB to 0x0000000068000000-0x00000000680060d5 (XEN) Initial low memory virq threshold set at 0x4000 pages. (XEN) Scrubbing Free RAM on 1 nodes using 2 CPUs (XEN) ....done. (XEN) Std. Loglevel: All (XEN) Guest Loglevel: All (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen) (XEN) Freed 288kB init memory. (XEN) d0v0: vGICD: unhandled word write 0xffffffff to ICACTIVER4 (XEN) d0v0: vGICD: unhandled word write 0xffffffff to ICACTIVER8 (XEN) d0v0: vGICD: unhandled word write 0xffffffff to ICACTIVER12 (XEN) d0v0: vGICD: unhandled word write 0xffffffff to ICACTIVER16 (XEN) d0v0: vGICD: unhandled word write 0xffffffff to ICACTIVER0 [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.17.0-rc2-dirty (ajay@latitude-3480) (gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11)) #9 SMP Sun Apr 29 11:8 [ 0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=10c5387d [ 0.000000] CPU: div instructions available: patching division code [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt: Machine model: Cubietech Cubieboard2 [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] Xen 4.11 support found [ 0.000000] cma: Reserved 16 MiB at 0x6f000000 [ 0.000000] psci: probing for conduit method from DT. [ 0.000000] psci: PSCIv1.1 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: Trusted OS migration not required [ 0.000000] psci: SMC Calling Convention v1.1 [ 0.000000] random: get_random_bytes called from start_kernel+0xa0/0x3fc with crng_init=0 [ 0.000000] percpu: Embedded 16 pages/cpu @(ptrval) s34764 r8192 d22580 u65536 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 65024 [ 0.000000] Kernel command line: console=hvc0 rw root=/dev/mmcblk0p2 rootwait clk_ignore_unused [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) [ 0.000000] Memory: 233356K/262144K available (6144K kernel code, 427K rwdata, 1528K rodata, 1024K init, 249K bss, 12404K reserved, 16384K ) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) [ 0.000000] vmalloc : 0xd0800000 - 0xff800000 ( 752 MB) [ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0x(ptrval) - 0x(ptrval) (7136 kB) [ 0.000000] .init : 0x(ptrval) - 0x(ptrval) (1024 kB) [ 0.000000] .data : 0x(ptrval) - 0x(ptrval) ( 428 kB) [ 0.000000] .bss : 0x(ptrval) - 0x(ptrval) ( 250 kB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 [ 0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt). [ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns [ 0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns [ 0.000021] Switching to timer-based delay loop, resolution 41ns [ 0.000363] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns [ 0.000587] clocksource: hstimer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370868154 ns [ 0.000919] Console: colour dummy device 80x30 [ 0.288101] console [hvc0] enabled [ 0.291596] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000) [ 0.301983] pid_max: default: 32768 minimum: 301 [ 0.306807] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.313450] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.321155] CPU: Testing write buffer coherency: ok [ 0.326523] /cpus/cpu@0 missing clock-frequency property [ 0.331929] /cpus/cpu@1 missing clock-frequency property [ 0.337304] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.344422] xen:grant_table: Grant tables using version 1 layout [ 0.350544] Grant table initialized [ 0.354158] xen:events: Using FIFO-based ABI [ 0.358487] Xen: initializing cpu0 [ 0.362075] Setting up static identity map for 0x60100000 - 0x60100060 [ 0.368858] Hierarchical SRCU implementation. [ 0.374021] smp: Bringing up secondary CPUs ... (XEN) d0v1: vGICD: unhandled word write 0xffffffff to ICACTIVER0 [ 0.385338] Xen: initializing cpu1 [ 0.385427] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.385704] smp: Brought up 1 node, 2 CPUs [ 0.399002] SMP: Total of 2 processors activated (96.00 BogoMIPS). [ 0.405260] CPU: All CPU(s) started in SVC mode. [ 0.410729] devtmpfs: initialized [ 0.420269] Built 1 zonelists, mobility grouping on. Total pages: 62371 [ 0.427816] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4 [ 0.435774] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.445681] futex hash table entries: 512 (order: 3, 32768 bytes) [ 0.452035] pinctrl core: initialized pinctrl subsystem [ 0.458206] NET: Registered protocol family 16 [ 0.463723] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.472429] xen:swiotlb_xen: Warning: only able to allocate 4 MB for software IO TLB [ 0.482360] software IO TLB [mem 0x6e000000-0x6e400000] (4MB) mapped at [(ptrval)-(ptrval)] [ 0.490848] hw-breakpoint: Failed to enable monitor mode on CPU 0. [ 0.511454] xen:balloon: Initialising balloon driver [ 0.518136] SCSI subsystem initialized [ 0.522612] usbcore: registered new interface driver usbfs [ 0.528158] usbcore: registered new interface driver hub [ 0.533651] usbcore: registered new device driver usb [ 0.538971] pps_core: LinuxPPS API ver. 1 registered [ 0.544017] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giome...@linux.it> [ 0.553197] PTP clock support registered [ 0.557413] Advanced Linux Sound Architecture Driver Initialized. [ 0.564659] clocksource: Switched to clocksource arch_sys_counter [ 0.579029] OF: /thermal-zones/cpu_thermal/cooling-maps/map0: could not find phandle [ 0.586908] missing cooling_device property [ 0.591101] failed to build thermal zone cpu_thermal: -22 [ 0.596769] NET: Registered protocol family 2 [ 0.601698] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes) [ 0.609472] TCP established hash table entries: 2048 (order: 1, 8192 bytes) [ 0.616536] TCP bind hash table entries: 2048 (order: 2, 16384 bytes) [ 0.623017] TCP: Hash tables configured (established 2048 bind 2048) [ 0.629574] UDP hash table entries: 256 (order: 1, 8192 bytes) [ 0.635496] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) [ 0.641976] NET: Registered protocol family 1 [ 0.647420] RPC: Registered named UNIX socket transport module. [ 0.653356] RPC: Registered udp transport module. [ 0.658210] RPC: Registered tcp transport module. [ 0.662918] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.671474] workingset: timestamp_bits=30 max_order=16 bucket_order=0 [ 0.685118] NFS: Registering the id_resolver key type [ 0.690225] Key type id_resolver registered [ 0.694440] Key type id_legacy registered [ 0.701273] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248) [ 0.708770] io scheduler noop registered [ 0.712700] io scheduler deadline registered [ 0.717334] io scheduler cfq registered (default) [ 0.722077] io scheduler mq-deadline registered [ 0.726696] io scheduler kyber registered [ 0.731450] sun4i-usb-phy 1c13400.phy: could not find pctldev for node /soc@1c00000/pinctrl@1c20800/usb0_id_detect_pin@0, deferring probe [ 0.747298] sun4i-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver [ 0.763143] xen:xen_evtchn: Event-channel device installed [ 0.818679] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled [ 0.830086] sun4i-backend 1e60000.display-backend: Couldn't find matching frontend, frontend features disabled [ 0.840566] sun4i-drm display-engine: bound 1e60000.display-backend (ops 0xc0748f94) [ 0.848402] sun4i-backend 1e40000.display-backend: Couldn't find matching frontend, frontend features disabled [ 0.858694] sun4i-drm display-engine: bound 1e40000.display-backend (ops 0xc0748f94) [ 0.866884] sun4i-drm display-engine: No panel or bridge found... RGB output disabled [ 0.874814] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0747f24) [ 0.882853] sun4i-drm display-engine: No panel or bridge found... RGB output disabled [ 0.890743] sun4i-drm display-engine: bound 1c0d000.lcd-controller (ops 0xc0747f24) [ 0.898849] sun4i-drm display-engine: bound 1c16000.hdmi (ops 0xc0749998) [ 0.905747] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 0.912374] [drm] No driver support for vblank timestamp query. [ 1.418423] [drm] Cannot find any crtc or sizes [ 1.423838] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0 [ 1.432355] Invalid max_queues (4), will use default max: 2. [ 1.439357] libphy: Fixed MDIO Bus: probed [ 1.443479] CAN device driver interface [ 1.448069] sun7i-dwmac 1c50000.ethernet: PTP uses main clock [ 1.453837] sun7i-dwmac 1c50000.ethernet: no reset control found [ 1.459957] sun7i-dwmac 1c50000.ethernet: no regulator found [ 1.466042] sun7i-dwmac 1c50000.ethernet: Ring mode enabled [ 1.471652] sun7i-dwmac 1c50000.ethernet: DMA HW capability register supported [ 1.478929] sun7i-dwmac 1c50000.ethernet: Normal descriptors [ 1.494720] libphy: stmmac: probed [ 1.498149] mdio_bus stmmac-0:01: attached PHY driver [unbound] (mii_bus:phy_addr=stmmac-0:01, irq=POLL) [ 1.508780] xen_netfront: Initialising Xen virtual ethernet driver [ 1.515120] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.521652] ehci-platform: EHCI generic platform driver [ 1.527443] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 1.533705] ohci-platform: OHCI generic platform driver [ 1.541166] sunxi-rtc 1c20d00.rtc: rtc core: registered rtc-sunxi as rtc0 [ 1.548026] sunxi-rtc 1c20d00.rtc: RTC enabled [ 1.552620] i2c /dev entries driver [ 1.557597] axp20x-i2c 1-0034: AXP20x variant AXP209 found [ 1.582423] input: axp20x-pek as /devices/platform/soc@1c00000 /1c2ac00.i2c/i2c-1/1-0034/axp20x-pek/input/input0 [ 1.593816] ldo1: supplied by regulator-dummy [ 1.598547] ldo2: supplied by regulator-dummy [ 1.604304] ldo3: supplied by regulator-dummy [ 1.609551] ldo4: supplied by regulator-dummy [ 1.614120] ldo5: supplied by regulator-dummy [ 1.619921] dcdc2: supplied by regulator-dummy [ 1.625276] dcdc3: supplied by regulator-dummy [ 1.631568] axp20x-i2c 1-0034: AXP20X driver loaded [ 1.638062] Registered IR keymap rc-empty [ 1.642244] rc rc0: sunxi-ir as /devices/platform/soc@1c00000/ 1c21800.ir/rc/rc0 [ 1.649831] input: sunxi-ir as /devices/platform/soc@1c00000/ 1c21800.ir/rc/rc0/input1 [ 1.658402] sunxi-ir 1c21800.ir: initialized sunXi IR driver [ 1.665721] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0) [ 1.674051] cpu cpu0: failed to get clock: -2 [ 1.678510] cpufreq-dt: probe of cpufreq-dt failed with error -2 [ 1.686126] sunxi-mmc 1c0f000.mmc: Got CD GPIO [ 1.714999] sunxi-mmc 1c0f000.mmc: base:0x(ptrval) irq:27 [ 1.721679] sun4i-ss 1c15000.crypto-engine: Die ID 0 [ 1.728729] usbcore: registered new interface driver usbhid [ 1.734324] usbhid: USB HID core driver [ 1.743178] sun4i-codec 1c22c00.codec: ASoC: Failed to create component debugfs directory [ 1.753930] sun4i-codec 1c22c00.codec: Codec <-> 1c22c00.codec mapping ok [ 1.762798] NET: Registered protocol family 17 [ 1.767356] can: controller area network core (rev 20170425 abi 9) [ 1.773642] NET: Registered protocol family 29 [ 1.778191] can: raw protocol (rev 20170425) [ 1.782466] can: broadcast manager protocol (rev 20170425 t) [ 1.788241] can: netlink gateway (rev 20170425) max_hops=1 [ 1.793991] Key type dns_resolver registered [ 1.798438] Registering SWP/SWPB emulation handler [ 1.804279] random: fast init done [ 1.859746] mmc0: host does not support reading read-only switch, assuming write-enable [ 1.874042] mmc0: new high speed SDHC card at address aaaa [ 1.880897] mmcblk0: mmc0:aaaa SS16G 14.8 GiB [ 1.891605] mmcblk0: p1 p2 [ 1.924710] ahci-sunxi 1c18000.sata: controller can't do PMP, turning off CAP_PMP [ 1.932248] ahci-sunxi 1c18000.sata: SSS flag set, parallel bus scan disabled [ 1.939478] ahci-sunxi 1c18000.sata: AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl platform mode [ 1.948464] ahci-sunxi 1c18000.sata: flags: ncq sntf stag pm led clo only pio slum part ccc [ 1.958331] scsi host0: ahci-sunxi [ 1.962147] ata1: SATA max UDMA/133 mmio [mem 0x01c18000-0x01c18fff] port 0x100 irq 33 [ 1.970760] ehci-platform 1c14000.usb: EHCI Host Controller [ 1.976458] ehci-platform 1c14000.usb: new USB bus registered, assigned bus number 1 [ 1.984532] ehci-platform 1c14000.usb: irq 29, io mem 0x01c14000 [ 2.014698] ehci-platform 1c14000.usb: USB 2.0 started, EHCI 1.00 [ 2.021857] hub 1-0:1.0: USB hub found [ 2.025702] hub 1-0:1.0: 1 port detected [ 2.030547] ehci-platform 1c1c000.usb: EHCI Host Controller [ 2.036234] ehci-platform 1c1c000.usb: new USB bus registered, assigned bus number 2 [ 2.044307] ehci-platform 1c1c000.usb: irq 34, io mem 0x01c1c000 [ 2.074667] ehci-platform 1c1c000.usb: USB 2.0 started, EHCI 1.00 [ 2.081787] hub 2-0:1.0: USB hub found [ 2.085639] hub 2-0:1.0: 1 port detected [ 2.090439] ohci-platform 1c14400.usb: Generic Platform OHCI controller [ 2.097158] ohci-platform 1c14400.usb: new USB bus registered, assigned bus number 3 [ 2.105231] ohci-platform 1c14400.usb: irq 30, io mem 0x01c14400 [ 2.179624] hub 3-0:1.0: USB hub found [ 2.183442] hub 3-0:1.0: 1 port detected [ 2.188291] ohci-platform 1c1c400.usb: Generic Platform OHCI controller [ 2.195033] ohci-platform 1c1c400.usb: new USB bus registered, assigned bus number 4 [ 2.203132] ohci-platform 1c1c400.usb: irq 35, io mem 0x01c1c400 [ 2.279656] hub 4-0:1.0: USB hub found [ 2.283474] hub 4-0:1.0: 1 port detected [ 2.288374] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator [ 2.297035] ata1: SATA link down (SStatus 0 SControl 300) [ 2.299725] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver [ 2.310399] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 5 [ 2.319258] hub 5-0:1.0: USB hub found [ 2.323068] hub 5-0:1.0: 1 port detected [ 2.339055] sunxi-rtc 1c20d00.rtc: setting system clock to 2018-04-30 05:37:21 UTC (1525066641) [ 2.347999] clk: Not disabling unused clocks [ 2.352298] vcc3v0: disabling [ 2.355339] vcc5v0: disabling [ 2.358364] ALSA device list: [ 2.361380] #0: sun4i-codec [ 2.444375] EXT4-fs (mmcblk0p2): recovery complete [ 2.450240] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) [ 2.458430] VFS: Mounted root (ext4 filesystem) on device 179:2. [ 2.475217] devtmpfs: mounted [ 2.480063] Freeing unused kernel memory: 1024K [ 3.494805] [drm] Cannot find any crtc or sizes INIT: version 2.88 booting [info] Using makefile-style concurrent boot in runlevel S. [....] Starting the hotplug events dispatcher: udevd[ 4.321664] udevd[184]: starting version 175 . ok [....] Synthesizing the initial hotplug events...done. [....] Waiting for /dev to be fully populated...done. [....] Setting preliminary keymap...done. [....] Activating swap...done. [ 7.118505] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null) [....] Cleaning up temporary files... /tmp. ok [....] Activating lvm and md swap...done. [....] Checking file systems...fsck from util-linux 2.20.1 done. [....] Mounting local filesystems...done. [....] Activating swapfile swap...done. [....] Cleaning up temporary files.... ok [....] Setting kernel variables ...done. [....] Setting up resolvconf.../etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.cf done. [ 10.616291] random: dd: uninitialized urandom read (512 bytes read) [....] Configuring network interfaces...Internet Systems Consortium DHCP Client 4.2.2 Copyright 2004-2011 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ [ 11.077914] Generic PHY stmmac-0:01: attached PHY driver [Generic PHY] (mii_bus:phy_addr=stmmac-0:01, irq=POLL) [ 11.091988] sun7i-dwmac 1c50000.ethernet eth0: RX IPC Checksum Offload disabled [ 11.099411] sun7i-dwmac 1c50000.ethernet eth0: No MAC Management Counters available [ 11.107103] sun7i-dwmac 1c50000.ethernet eth0: PTP not supported by HW Listening on LPF/eth0/02:0f:06:c3:45:7c Sending on LPF/eth0/02:0f:06:c3:45:7c Sending on Socket/fallback DHCPREQUEST on eth0 to 255.255.255.255 port 67 [ 12.175471] sun7i-dwmac 1c50000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx DHCPREQUEST on eth0 to 255.255.255.255 port 67 DHCPACK from 10.20.50.50 /etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /etc/resolvconf/run/resolv.conf bound to 10.20.55.141 -- renewal in 248256 seconds. done. [....] Cleaning up temporary files.... ok [info] Setting console screen modes. setterm: cannot (un)set powersave mode: Inappropriate ioctl for device [info] Skipping font and keymap setup (handled by console-setup). [....] Setting up console font and keymap...done. [....] Setting up X socket directories... /tmp/.X11-unix /tmp/.ICE-unix. ok INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd. ok [ 21.960384] random: dbus-daemon: uninitialized urandom read (12 bytes read) [ 21.996335] random: dbus-daemon: uninitialized urandom read (12 bytes read) [ 22.038283] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting periodic command scheduler: cron. ok [....] Starting system message bus: dbus. ok [....] Starting OpenBSD Secure Shell server: sshd. ok ############################################################################# c) After I ssh into the machine, following just hangs (without returning to prompt) : debian@debian-armhf:~$ sudo xl list Name ID Mem VCPUs State Time(s) Now what am I missing? On Sun, Apr 29, 2018 at 11:30 AM, Ajay Garg <ajaygargn...@gmail.com> wrote: > I changed the /chosen node in the dts file to > > ####################################### > chosen { > stdout-path = "serial0:115200n8"; > xen,xen-bootargs = "dom0_mem=752M console=dtuart dtuart=serial0 > dom0_max_vcpus=4"; > xen,dom0-bootargs = "console=ttyS0,115200 rw root=/dev/mmcblk0p2 > ignore_loglevel cma=128M"; > modules { > #address-cells = <2>; > #size-cells = <2>; > module@1 { > compatible = "xen,linux-zimage", "xen,multiboot-module"; > reg = <0x0 0x7a000000 0x0 0x02000000>; > }; > }; > }; > ####################################### > > > > Also, the xen-related features in the kernel are as follows (created by > default after selecting "Kernel features => Xen guest support on ARM" in > menuconfig) : > > ####################################### > CONFIG_XEN_DOM0=y > CONFIG_XEN=y > CONFIG_XEN_BLKDEV_FRONTEND=y > CONFIG_XEN_NETDEV_FRONTEND=y > CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y > CONFIG_HVC_XEN=y > CONFIG_HVC_XEN_FRONTEND=y > CONFIG_XEN_FBDEV_FRONTEND=y > CONFIG_XEN_BALLOON=y > CONFIG_XEN_SCRUB_PAGES=y > CONFIG_XEN_DEV_EVTCHN=y > CONFIG_XEN_BACKEND=y > CONFIG_XENFS=y > CONFIG_XEN_COMPAT_XENFS=y > CONFIG_XEN_SYS_HYPERVISOR=y > CONFIG_XEN_XENBUS_FRONTEND=y > CONFIG_XEN_GNTDEV=m > CONFIG_XEN_GRANT_DEV_ALLOC=m > CONFIG_SWIOTLB_XEN=y > CONFIG_XEN_PRIVCMD=y > CONFIG_XEN_AUTO_XLATE=y > > > # CONFIG_XEN_BLKDEV_BACKEND is not set > # CONFIG_XEN_SCSI_FRONTEND is not set > # CONFIG_XEN_NETDEV_BACKEND is not set > # CONFIG_XEN_WDT is not set > # CONFIG_XEN_PVCALLS_FRONTEND is not set > # CONFIG_XEN_PVCALLS_BACKEND is not set > ####################################### > > However, I see absolutely no change in the observations; no xen-related > log on the serial-console, and "sudo xl list" gives the same error messages. > > What am I lacking? > > > On Sat, Apr 28, 2018 at 11:06 PM, Andrew Cooper <andrew.coop...@citrix.com > > wrote: > >> On 28/04/18 18:34, Ajay Garg wrote: >> >> Hi Andrew. >> >> Thanks for the reply. >> >> On Sat, Apr 28, 2018 at 10:57 PM, Andrew Cooper < >> andrew.coop...@citrix.com> wrote: >> >>> On 28/04/18 18:12, Ajay Garg wrote: >>> >>> Hi All. >>> >>> We have brought up the cubieboard2 from almost scratch, following are >>> the steps done : >>> >>> <snip> >>> >>> == getting xen ready == >>> >>> i) >>> Compiled xen on cubieboard itself, via : >>> >>> * git clone git://xenbits.xen.org/xen.git >>> * cd xen >>> . * ./configure --libdir=/usr/lib >>> * make debball CONFIG_EARLY_PRINTK=sun7i -j4 >>> * sudo dpkg -i dist/xen-upstream-4.11-unstable.deb >>> * sudo reboot >>> >>> ii) >>> Upon reboot, "sudo xl list" gives following : >>> >>> ################################################################## >>> debian@debian-armhf:~$ sudo xl list >>> [sudo] password for debian: >>> xencall: error: Could not obtain handle on privileged command interface: >>> No such file or directory >>> libxl: error: libxl.c:102:libxl_ctx_alloc: cannot open libxc handle: No >>> such file or directory >>> cannot init xl context >>> ################################################################## >>> >>> >>> This means that /dev/xen/privcmd (or the legacy /proc/xen/privcmd) >>> device isn't available. >>> >>> First check that you have actually booted Xen with Linux as dom0. You >>> don't show any logs in this final section, and simply installing the >>> debball and rebooting won't typically cause Xen to be the head of the boot >>> list. >>> >> >> Yes, I haven't been able to setup xen bootup. >> >> That's why, requested help regarding the changes that are required in >> https://github.com/torvalds/linux/blob/master/arch/arm/boot/ >> dts/sun7i-a20-cubieboard2.dts, that would cause dom0 to boot up. >> >> >> Sorry for the confusion. >> >> >> Ah - sorry. I misunderstood. I'm afraid you're going to have to wait >> for some people more knowledge about ARM to answer. >> >> ~Andrew >> > > > > -- > Regards, > Ajay > -- Regards, Ajay
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