Re: [Xen-devel] Xen on (RELEASE-4.4.0) crashed when booting on Cubieboard2

[duqi <duqi_2009@xxxxxxx>]

At 2014-04-07 16:46:32,"Ian Campbell" <Ian.Campbell@xxxxxxxxxx> wrote:
>On Sun, 2014-04-06 at 10:32 +0100, Julien Grall wrote:
>> Please try the instructions on the wiki page before trying fancy things...
>
>Yes, agreed, please follow the wiki page exactly and ask if things don't
>work as expected.
>

Hello,

We have tried to follow the wiki page's instruction to boot dom0 on xen , but 
we found that there are something wrong with it. We made some simple 
modification about bootargs. The command we used is here:

setenv kernel_addr_r  0x7f400000                                
setenv fdt_addr       0x7ea00000                                                
                                                 
setenv xen_addr_r     0x7e800000                                
                                                                
fatload mmc 0 ${xen_addr_r} /boot/xen
fatload mmc 0 ${fdt_addr} /boot/sun7i-a20-cubieboard2-xen2.dtb
fatload mmc 0 ${kernel_addr_r} /boot/zImage
setenv fdt_high      0xffffffff 
fdt addr ${fdt_addr} 0x40000
fdt resize

setenv bootargs "sync_console console=dtuart 
dtuart=/soc@01c00000/serial@01c28000 dom0_mem=128M"
fdt chosen
fdt set /chosen \#address-cells <1>
fdt set /chosen \#size-cells <1>
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} 0xf000000>     
fdt set /chosen/module@0 bootargs "console=hvc0,115200n8 debug ignore_loglevel 
rw earlyprintk=xen clk_ignore_unused init=/init"  

bootz ${xen_addr_r} - ${fdt_addr}

Whithout this change , it would be stuck at the start of the dom0's boot.

Add the modification , the dom0's booting is nothing different . Coud you give 
me some advices?

Thank you very much.  

Here is the kerneldump now:
Kernel image @ 0x7e800000 [ 0x000000 - 0x0cf700 ]
## Flattened Device Tree blob at 7ea00000
   Booting using the fdt blob at 0x7ea00000
   reserving fdt memory region: addr=7ea00000 size=3000
   Using Device Tree in place at 7ea00000, end 7ea05fff

Starting kernel ...

 Xen 4.4.0
(XEN) Xen version 4.4.0 (root@) (arm-linux-gnueabihf-gcc (Ubuntu/Linaro 
4.7.2-1ubuntu1) 4.7.2) debug=n Wed Apr  9 17:35:22 CST 24
(XEN) Latest ChangeSet: Fri Mar 14 12:00:11 2014 +0000 git:69bae51-dirty
(XEN) Console output is synchronous.
(XEN) Processor: 410fc074: "ARM Limited", variant: 0x0, part 0xc07, rev 0x4
(XEN) 32-bit Execution:
(XEN)   Processor Features: 00001131:00011011
(XEN)     Instruction Sets: AArch32 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) Generic Timer IRQ: phys=30 hyp=26 virt=27
(XEN) Using generic timer at 24000 KHz
(XEN) GIC 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) GIC: 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) Brought up 1 CPUs
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Populate P2M 0x68000000->0x70000000 (1:1 mapping for dom0)
(XEN) Loading kernel from boot module 2
(XEN) Loading zImage from 000000007f400000 to 000000006f800000-000000006ff08fa0
(XEN) Loading dom0 DTB to 0x000000006f600000-0x000000006f6028f3
(XEN) Scrubbing Free RAM: .........done.
(XEN) Initial low memory virq threshold set at 0x4000 pages.
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) **********************************************
(XEN) ******* WARNING: CONSOLE OUTPUT IS SYNCHRONOUS
(XEN) ******* This option is intended to aid debugging of Xen by ensuring
(XEN) ******* that all output is synchronously delivered on the serial line.
(XEN) ******* However it can introduce SIGNIFICANT latencies and affect
(XEN) ******* timekeeping. It is NOT recommended for production use!
(XEN) **********************************************
(XEN) 3... 2... 1... 
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to 
Xen)
(XEN) Freed 244kB init memory.
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.13.0-rc4 (root@Lenovo-G480) (gcc version 4.7.2 
(Ubuntu/Linaro 4.7.2-1ubuntu1) ) #16 SMP Wed Apr 94
[    0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing 
instruction cache
[    0.000000] Machine model: Cubietech Cubieboard2
[    0.000000] debug: ignoring loglevel setting.
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 32768
[    0.000000] free_area_init_node: node 0, pgdat c0cbc3c0, node_mem_map 
c0dc5000
[    0.000000]   Normal zone: 256 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 32768 pages, LIFO batch:7
[    0.000000] psci: probing function IDs from device-tree
[    0.000000] PERCPU: Embedded 9 pages/cpu @c0ecc000 s13696 r8192 d14976 u36864
[    0.000000] pcpu-alloc: s13696 r8192 d14976 u36864 alloc=9*4096
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total 
pages: 32512
[    0.000000] Kernel command line: console=hvc0,115200n8 debug ignore_loglevel 
\ 
[    0.000000] rw earlyprintk=xen clk_ignore_unused init=/init
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] allocated 262144 bytes of page_cgroup
[    0.000000] please try 'cgroup_disable=memory' option if you don't want 
memory cgroups
[    0.000000] Memory: 115512K/131072K available (6592K kernel code, 803K 
rwdata, 2828K rodata, 2857K init, 975K bss, 15560K res)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc093b47c   (9422 kB)
[    0.000000]       .init : 0xc093c000 - 0xc0c06580   (2858 kB)
[    0.000000]       .data : 0xc0c08000 - 0xc0cd0c80   ( 804 kB)
[    0.000000]        .bss : 0xc0cd0c80 - 0xc0dc4be8   ( 976 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
[    0.000000] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 
2863311519744ns
[    0.000000] Switching to timer-based delay loop
[    0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 
178956969942ns
[    0.000000] sched_clock: 32 bits at 160MHz, resolution 6ns, wraps every 
26843545593ns
[    0.000000] Console: colour dummy device 80x30
[    0.000358] Calibrating delay loop (skipped), value calculated using timer 
frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.000373] pid_max: default: 32768 minimum: 301
[    0.000550] Security Framework initialized
[    0.000604] SELinux:  Initializing.
[    0.000648] SELinux:  Starting in permissive mode
[    0.000843] Mount-cache hash table entries: 512
[    0.003913] Initializing cgroup subsys memory
[    0.003964] Initializing cgroup subsys devices
[    0.003977] Initializing cgroup subsys freezer
[    0.003987] Initializing cgroup subsys net_cls
[    0.003997] Initializing cgroup subsys blkio
[    0.004006] Initializing cgroup subsys perf_event
[    0.004130] CPU: Testing write buffer coherency: ok
[    0.004177] ftrace: allocating 27217 entries in 54 pages
[    0.040679] /cpus/cpu@0 missing clock-frequency property
[    0.040709] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.040748] Setting up static identity map for 0x68638440 - 0x686384d8
[    0.048085] Brought up 1 CPUs
[    0.048103] SMP: Total of 1 processors activated.
[    0.048112] CPU: All CPU(s) started in SVC mode.
[    0.048920] devtmpfs: initialized
[    0.053746] VFP support v0.3: implementor 41 architecture 2 part 30 variant 
7 rev 4
[    0.053875] Xen 4.4 support found, events_irq=31 gnttab_frame_pfn=1d00
[    0.053952] xen:grant_table: Grant tables using version 1 layout
[    0.054023] Grant table initialized
[    0.060588] atomic64 test passed
[    0.060607] pinctrl core: initialized pinctrl subsystem
[    0.061059] regulator-dummy: no parameters
[    0.061582] NET: Registered protocol family 16
[    0.062114] Xen: initializing cpu0
[    0.062401] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.064145] xen:swiotlb_xen: Warning: only able to allocate 8 MB for 
software IO TLB
[    0.067369] software IO TLB [mem 0x6d800000-0x6e000000] (8MB) mapped at 
[c5800000-c5ffffff]
[    0.069918] No ATAGs?
[    0.069943] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint 
registers.
[    0.069954] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.070829] Serial: AMBA PL011 UART driver
[    0.078203] bio: create slab <bio-0> at 0
[    0.079239] edma-dma-engine edma-dma-engine.0: Can't allocate PaRAM dummy 
slot
[    0.079274] edma-dma-engine: probe of edma-dma-engine.0 failed with error -5
[    0.079418] xen:balloon: Initialising balloon driver
[    0.079537] reg-fixed-voltage ahci-5v.4: could not find pctldev for node 
/soc@01c00000/pinctrl@01c20800/ahci_pwr_pin@0, defere
[    0.079556] platform ahci-5v.4: Driver reg-fixed-voltage requests probe 
deferral
[    0.079580] reg-fixed-voltage usb1-vbus.5: could not find pctldev for node 
/soc@01c00000/pinctrl@01c20800/usb1_vbus_pin@0, dee
[    0.079595] platform usb1-vbus.5: Driver reg-fixed-voltage requests probe 
deferral
[    0.079664] reg-fixed-voltage usb2-vbus.6: could not find pctldev for node 
/soc@01c00000/pinctrl@01c20800/usb2_vbus_pin@0, dee
[    0.079680] platform usb2-vbus.6: Driver reg-fixed-voltage requests probe 
deferral
[    0.080949] SCSI subsystem initialized
[    0.081246] libata version 3.00 loaded.
[    0.081547] usbcore: registered new interface driver usbfs
[    0.081656] usbcore: registered new interface driver hub
[    0.081826] usbcore: registered new device driver usb
[    0.082082] pps_core: LinuxPPS API ver. 1 registered
[    0.082093] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo 
Giometti <giometti@xxxxxxxx>
[    0.082119] PTP clock support registered
[    0.083275] NetLabel: Initializing
[    0.083290] NetLabel:  domain hash size = 128
[    0.083296] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.083366] NetLabel:  unlabeled traffic allowed by default
[    0.083725] Switched to clocksource arch_sys_counter
[    0.139540] NET: Registered protocol family 2
[    0.140540] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.140569] TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
[    0.140593] TCP: Hash tables configured (established 1024 bind 1024)
[    0.140663] TCP: reno registered
[    0.140681] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.140714] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.141021] NET: Registered protocol family 1
[    0.141504] RPC: Registered named UNIX socket transport module.
[    0.141519] RPC: Registered udp transport module.
[    0.141526] RPC: Registered tcp transport module.
[    0.141533] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.315258] audit: initializing netlink socket (disabled)
[    0.315325] type=2000 audit(0.300:1): initialized
[    0.505186] zbud: loaded
[    0.505818] VFS: Disk quotas dquot_6.5.2
[    0.506096] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.508520] NFS: Registering the id_resolver key type
[    0.508590] Key type id_resolver registered
[    0.508599] Key type id_legacy registered
[    0.508618] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.508976] msgmni has been set to 225
[    0.509349] SELinux:  Registering netfilter hooks
[    0.512514] alg: No test for stdrng (krng)
[    0.512547] NET: Registered protocol family 38
[    0.512865] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 
250)
[    0.513075] io scheduler noop registered
[    0.513086] io scheduler deadline registered
[    0.513302] io scheduler cfq registered (default)
[    0.516506] sunxi-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.517786] xen:xen_evtchn: Event-channel device installed
[    1.314027] console [hvc0] enabled
[    1.317439] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    1.325154] Serial: AMBA driver
[    1.328282] Serial: IMX driver
[    1.332376] [drm] Initialized drm 1.1.0 20060810
[    1.338817] libphy: Fixed MDIO Bus: probed
[    1.343453] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.349991] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.356162] ohci-omap3: OHCI OMAP3 driver
[    1.360534] usbcore: registered new interface driver usbserial
[    1.366381] usbcore: registered new interface driver usbserial_generic
[    1.372908] usbserial: USB Serial support registered for generic
[    1.379269] mousedev: PS/2 mouse device common for all mice
[    1.386133] device-mapper: uevent: version 1.0.3
[    1.391177] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: 
dm-devel@xxxxxxxxxx
[    1.400531] #sunxi_mmc_probe# the host->sg_cpu=c883e000
[    1.406026] sunxi-mci 1c0f000.mmc: base:0xc88be000 irq:64
[    1.411671] hidraw: raw HID events driver (C) Jiri Kosina
[    1.417115] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
[    1.423668] mmc0: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 21 width 0 timing 0
[    1.431001] sunxi-mci 1c0f000.mmc: power on!
[    1.436012] usbcore: registered new interface driver usbhid
[    1.441520] usbhid: USB HID core driver
[    1.445903] drop_monitor: Initializing network drop monitor service
[    1.452381] ip_tables: (C) 2000-2006 Netfilter Core Team
[    1.457709] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
timing 0
[    1.465358] sunxi-mci 1c0f000.mmc: ios->clock: 400000
[    1.470481] sunxi-mci 1c0f000.mmc: setting clk to 400000, rounded 400000


duqi.
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