Re: [Xen-devel] REGRESSION: Xen 4.13 RC5 fails to bootstrap Dom0 on ARM

[Roman Shaposhnik <roman@zededa.com>]

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On Tue, Dec 17, 2019 at 5:51 PM Stefano Stabellini
<sstabellini@kernel.org> wrote:
>
> On Tue, 17 Dec 2019, Roman Shaposhnik wrote:
> > On Tue, Dec 17, 2019 at 11:26 AM Stefano Stabellini
> > <sstabellini@kernel.org> wrote:
> > >
> > > On Tue, 17 Dec 2019, Roman Shaposhnik wrote:
> > > > On Tue, Dec 17, 2019 at 10:30 AM Stefano Stabellini
> > > > <sstabellini@kernel.org> wrote:
> > > > >
> > > > > On Tue, 17 Dec 2019, Julien Grall wrote:
> > > > > > Hi,
> > > > > >
> > > > > > On 17/12/2019 04:39, Roman Shaposhnik wrote:
> > > > > > > On Mon, Dec 16, 2019 at 6:55 PM Stefano Stabellini
> > > > > > > <sstabellini@kernel.org> wrote:
> > > > > > > > On Mon, 16 Dec 2019, Roman Shaposhnik wrote:
> > > > > > > > If I sum all the memory sizes together I get 0x3ddfd000 which is 990M.
> > > > > > > > If so, I wonder how you could boot succesfully with dom0_mem=1024M even
> > > > > > > > on Xen 4.12... :-?
> > > > > > >
> > > > > > > That is a very interesting observation indeed! I actually don't
> > > > > > > remember where that device tree came from, but I think it was from one
> > > > > > > of the Linaro sites.
> > > > > >
> > > > > > This is mostly likely because of:
> > > > > >
> > > > > > commit 6341a674573f1834f083f0ab0f5b36b075f9e02e
> > > > > > Author: Julien Grall <julien.grall@arm.com>
> > > > > > Date:   Wed Aug 21 22:42:31 2019 +0100
> > > > > >
> > > > > >     xen/arm: domain_build: Don't continue if unable to allocate all dom0 banks
> > > > > >
> > > > > >     Xen will only print a warning if there are memory unallocated when using
> > > > > >     1:1 mapping (only used by dom0). This also includes the case where no
> > > > > >     memory has been allocated.
> > > > > >
> > > > > >     It will bring to all sort of issues that can be hard to diagnostic for
> > > > > >     users (the warning can be difficult to spot or disregard).
> > > > > >
> > > > > >     If the users request 1GB of memory, then most likely they want the exact
> > > > > >     amount and not 512MB. So panic if all the memory has not been allocated.
> > > > > >
> > > > > >     After this change, the behavior is the same as for non-1:1 memory
> > > > > >     allocation (used by domU).
> > > > > >
> > > > > >     At the same time, reflow the message to have the format on a single
> > > > > >     line.
> > > > > >
> > > > > >     Signed-off-by: Julien Grall <julien.grall@arm.com>
> > > > > >     Acked-by: Stefano Stabellini <sstabellini@kernel.org>
> > > > >
> > > > > Ah! Roman, could you please post the full boot log of a successful 4.12
> > > > > boot?
> > > > >
> > > > > If it has a "Failed to allocate requested dom0 memory" message, then we
> > > > > know what the issue is.
> > > >
> > > > Aha! Our messages seems to have crossed ;-) Full log is attached and
> > > > yes -- that's
> > > > the problem indeed.
> > > >
> > > > So at least that mystery is solved. But I'm still not able to get to a
> > > > full 1G of memory
> > > > even with your update to the device tree file. Any chance you can send me the
> > > > device tree file that works for you?
> > >
> > > I didn't try on real hardware, I only tried on QEMU with a similar
> > > configuration. I went back and check the HiKey device tree I used and it
> > > is the same as yours (including the ramoops reserved-memory error).
> > >
> > > Apparently there are 1G and 2G variants of the HiKey, obviously both
> > > yours and my device tree are for the 1G variant. I try to dig through
> > > the docs but couldn't find the details of the 2G variant. I cannot find
> > > anywhere the memory range for the top 1G of memory not even on the
> > > LeMaker docs! :-/
> >
> > Yup. That's exactly the issue on my end as well - can't seem to find an
> > authoritative source for that devicetree.
> >
> > I did find this, though:
> >      https://releases.linaro.org/96boards/hikey/linaro/debian/15.11/
> > which looks like it has the latest (at least file timestamp-wise) devicetree.
> >
> > If you look at the memory and reserved memory nodes there, they
> > are actually much simpler than what we've got:
> >
> >         memory {
> >                 device_type = "memory";
> >                 reg = <0x0 0x0 0x0 0x40000000>;
> >         };
>
> Which is still 1G, but it is surprisingly simpler.
>
>
> >         reserved-memory {
> >                 #address-cells = <0x2>;
> >                 #size-cells = <0x2>;
> >                 ranges;
> >
> >                 mcu-buf@05e00000 {
> >                         no-map;
> >                         reg = <0x0 0x5e00000 0x0 0x100000 0x0
> > 0x740f000 0x0 0x1000>;
> >                 };
> >
> >                 mbox-buf@06dff000 {
> >                         no-map;
> >                         reg = <0x0 0x6dff000 0x0 0x1000>;
> >                 };
> >         };
> >
> > So -- just on a whim -- I changed it to:
> >     reg = <0x0 0x0 0x0 0x80000000>;
>
> I would have tried that too :-)
>
>
> > Interestingly enough, Xen booted, and complained about only 192MB
> > unallocated this time.
> > So, I dropped the size of Dom0 to 640M and I got it boot and here's
> > what I'm seeing as
> > an output of xl info:
> >    total_memory           : 1120
> >    free_memory            : 390
> > It still nowhere close to 2G.
> >
> > Then I booted the Linux kernel without Xen and it correctly identified
> > all 2G worth of RAM, and in fact,
>
> Good! We can work with that.

So that is, in fact, my first question -- why is Xen not showing
available memory in xl info?

> > when I converted /sys/firmware/devicetree/base back into dts, here's
> > what I've got:
> >
> >         memory {
> >                 device_type = "memory";
> >                 reg = <0x0 0x0 0x0 0x5e00000 0x0 0x5f00000 0x0 0x1000
> > 0x0 0x5f02000 0x0 0xefd000 0x0 0x6e00000 0x0 0x60f000 0x0 0x7410000
> > 0x0 0x1aaf0000 0x0 0x21f00000 0x0 0x100000 0x0 0x22000000 0x0
> > 0x1c000000>;
> >         };
> >
> >         reserved-memory {
> >                 ranges;
> >                 #size-cells = <0x2>;
> >                 #address-cells = <0x2>;
> >
> >                 ramoops@21f00000 {
> >                         ftrace-size = <0x20000>;
> >                         console-size = <0x20000>;
> >                         reg = <0x0 0x21f00000 0x0 0x100000>;
> >                         record-size = <0x20000>;
> >                         compatible = "ramoops";
> >                 };
> >
> >                 linux,cma {
> >                         linux,cma-default;
> >                         reusable;
> >                         size = <0x0 0x8000000>;
> >                         compatible = "shared-dma-pool";
> >                 };
> >         };
> >
> > If you look at the REG -- it does now add up to 2Gb,
>
> I am a bit confused by this. I did the calculation twice and it is still
> only 990MB. In fact, what you pasted here really looks like the old
> device tree. Is it possible that you run the test with the old device
> tree?

There's something weird going on when it comes to Linux on this
box. Basically, it seems that regardless of what devicetree I pass,
Linux kernel seems to successfully discover all of 2G of memory.

For example, I'm attaching a Linux boot log that clearly shows:
   Memory: 1877336K/2062392K available
Even though I double checked that devicetree is only advertising 1G.

But see below for more on this:

> > but booting Xen
> > with it has exactly theo
> > same effect as booting it with: reg = <0x0 0x0 0x0 0x80000000>;
> >
> > I am attaching a full log, and I see the following in the logs:
> >
> > (XEN) Allocating 1:1 mappings totalling 720MB for dom0:
> > (XEN) BANK[0] 0x00000008000000-0x0000001c000000 (320MB)
> > (XEN) BANK[1] 0x00000040000000-0x00000058000000 (384MB)
> > (XEN) BANK[2] 0x0000007b000000-0x0000007c000000 (16MB)
> >
> > Which sort of makes sense, I guess -- but I still don't understand
> > where all these ranges
> > are coming from and how come Xen doesn't see the full 2Gb even with various
> > devicetrees I tried.
> >
> > Any ideas here would be greatly apprecaited!
>
> I think you might have run the test with the old device tree by mistake?
> If you are sure that Linux can boot OK with memory as:
>
>   reg = <0x0 0x0 0x0 0x80000000>;
>
> and correctly sees 2GB, then it should work with Xen too.

Well, that's the issue -- it seems that Linux somehow doesn't depend *at all*
on what I put in devicetrees -- it always detects full 2G.

> In fact, looking at the logs you pasted, the choice of memory for dom0:
>
>   0x40000000-0x58000000
>   0x7b000000-0x7c000000
>
> means that Xen was succesfully able to see the RAM above 0x40000000!
> So, it looked like it already worked some extent!

Exactly! That's the other surprising bit -- I noticed that too -- its not like
Xen doesn't see any of the memory above 1G -- it just doesn't see enough of it.

So the question is -- what is Linux doing that Xen doesn't?

Thanks,
Roman.

[-- Attachment #2: linux.log --]
[-- Type: application/octet-stream, Size: 24830 bytes --]

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd033]
[    0.000000] Linux version 4.19.5 (root@350845ae5335) (gcc version 6.3.0 (Alpine 6.3.0)) #1 SMP PREEMPT Sat Sep 7 06:30:56 UTC 2019
[    0.000000] Machine model: HiKey Development Board
[    0.000000] efi: Getting EFI parameters from FDT:
[    0.000000] efi: EFI v2.40 by Linaro HiKey EFI Nov 28 2015 10:50:07
[    0.000000] efi:
[    0.000000] Reserved memory: created CMA memory pool at 0x0000000072c00000, size 128 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] NUMA: No NUMA configuration found
[    0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x000000007fffffff]
[    0.000000] NUMA: NODE_DATA [mem 0x7ff28680-0x7ff29e3f]
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000000000000-0x000000007fffffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000005dfffff]
[    0.000000]   node   0: [mem 0x0000000005f00000-0x0000000006dfefff]
[    0.000000]   node   0: [mem 0x0000000006e00000-0x000000000740efff]
[    0.000000]   node   0: [mem 0x0000000007410000-0x0000000034ffffff]
[    0.000000]   node   0: [mem 0x00000000350f0000-0x000000003dffffff]
[    0.000000]   node   0: [mem 0x0000000040000000-0x000000007ff6dfff]
[    0.000000]   node   0: [mem 0x000000007ff6e000-0x000000007fffefff]
[    0.000000]   node   0: [mem 0x000000007ffff000-0x000000007fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000007fffffff]
[    0.000000] On node 0 totalpages: 515598
[    0.000000]   DMA32 zone: 8192 pages used for memmap
[    0.000000]   DMA32 zone: 0 pages reserved
[    0.000000]   DMA32 zone: 515598 pages, LIFO batch:63
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.0 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 v1.0
[    0.000000] random: get_random_bytes called from start_kernel+0xac/0x414 with crng_init=0
[    0.000000] percpu: Embedded 23 pages/cpu @(____ptrval____) s56664 r8192 d29352 u94208
[    0.000000] pcpu-alloc: s56664 r8192 d29352 u94208 alloc=23*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [0] 4 [0] 5 [0] 6 [0] 7
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: enabling workaround for ARM erratum 843419
[    0.000000] CPU features: enabling workaround for ARM erratum 845719
[    0.000000] CPU features: detected: Kernel page table isolation (KPTI)
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 507406
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/kernel console=ttyAMA0 console=ttyAMA1 console=ttyAMA2 console=ttyAMA3 root=PARTUUID=f71bd987-d99a-4c88-9781-cf4c26cae55e rootdelay=3
[    0.000000] Memory: 1877336K/2062392K available (10108K kernel code, 1676K rwdata, 5016K rodata, 1280K init, 376K bss, 53984K reserved, 131072K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000] rcu: 	RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=8.
[    0.000000] 	Tasks RCU enabled.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
[    0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[    0.000000] GIC: Using split EOI/Deactivate mode
[    0.000000] clocksource: arm,sp804: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 99544814920 ns
[    0.000005] sched_clock: 32 bits at 19MHz, resolution 52ns, wraps every 111848106981ns
[    0.000365] arch_timer: cp15 timer(s) running at 1.20MHz (phys).
[    0.000373] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x11b661f8e, max_idle_ns: 1763180809113 ns
[    0.000589] Console: colour dummy device 80x25
[    0.000666] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.40 BogoMIPS (lpj=4800)
[    0.000676] pid_max: default: 32768 minimum: 301
[    0.000743] Security Framework initialized
[    0.001397] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.001724] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.001759] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.001775] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.024371] ASID allocator initialised with 32768 entries
[    0.032370] rcu: Hierarchical SRCU implementation.
[    0.044499] Remapping and enabling EFI services.
[    0.052444] smp: Bringing up secondary CPUs ...
[    0.084735] Detected VIPT I-cache on CPU1
[    0.084789] CPU1: Booted secondary processor 0x0000000001 [0x410fd033]
[    0.116824] Detected VIPT I-cache on CPU2
[    0.116871] CPU2: Booted secondary processor 0x0000000103 [0x410fd033]
[    0.148820] Detected VIPT I-cache on CPU3
[    0.148845] CPU3: Booted secondary processor 0x0000000101 [0x410fd033]
[    0.180884] Detected VIPT I-cache on CPU4
[    0.180913] CPU4: Booted secondary processor 0x0000000002 [0x410fd033]
[    0.212960] Detected VIPT I-cache on CPU5
[    0.212986] CPU5: Booted secondary processor 0x0000000102 [0x410fd033]
[    0.245027] Detected VIPT I-cache on CPU6
[    0.245051] CPU6: Booted secondary processor 0x0000000100 [0x410fd033]
[    0.277091] Detected VIPT I-cache on CPU7
[    0.277119] CPU7: Booted secondary processor 0x0000000003 [0x410fd033]
[    0.277190] smp: Brought up 1 node, 8 CPUs
[    0.277225] SMP: Total of 8 processors activated.
[    0.277232] CPU features: detected: 32-bit EL0 Support
[    0.281383] CPU: All CPU(s) started at EL2
[    0.281422] alternatives: patching kernel code
[    0.282605] devtmpfs: initialized
[    0.288321] Registered cp15_barrier emulation handler
[    0.288338] Registered setend emulation handler
[    0.288643] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.288701] futex hash table entries: 2048 (order: 5, 131072 bytes)
[    0.292354] pinctrl core: initialized pinctrl subsystem
[    0.294174] DMI not present or invalid.
[    0.294548] NET: Registered protocol family 16
[    0.295000] audit: initializing netlink subsys (disabled)
[    0.295106] audit: type=2000 audit(0.292:1): state=initialized audit_enabled=0 res=1
[    0.296670] cpuidle: using governor menu
[    0.297005] vdso: 2 pages (1 code @ (____ptrval____), 1 data @ (____ptrval____))
[    0.297015] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[    0.305904] DMA: preallocated 256 KiB pool for atomic allocations
[    0.307316] Serial: AMBA PL011 UART driver
[    0.310141] hi6220-mbox f7510000.mailbox: Mailbox enabled
[    0.316955] OF: amba_device_add() failed (-19) for /soc/uart@f7111000
[    0.318179] f8015000.uart: ttyAMA0 at MMIO 0xf8015000 (irq = 41, base_baud = 0) is a PL011 rev2
[    0.911656] console [ttyAMA0] enabled
[    0.927357] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[    0.934505] cryptd: max_cpu_qlen set to 1000
[    0.939719] ACPI: Interpreter disabled.
[    0.945182] vgaarb: loaded
[    0.948474] SCSI subsystem initialized
[    0.952483] libata version 3.00 loaded.
[    0.952837] usbcore: registered new interface driver usbfs
[    0.958386] usbcore: registered new interface driver hub
[    0.963795] usbcore: registered new device driver usb
[    0.969888] pps_core: LinuxPPS API ver. 1 registered
[    0.974876] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.984037] PTP clock support registered
[    0.988108] EDAC MC: Ver: 3.0.0
[    0.991578] Registered efivars operations
[    0.997298] clocksource: Switched to clocksource arch_sys_counter
[    1.003598] VFS: Disk quotas dquot_6.6.0
[    1.007576] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    1.014599] pnp: PnP ACPI: disabled
[    1.024490] NET: Registered protocol family 2
[    1.029356] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 16384 bytes)
[    1.037311] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    1.044687] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
[    1.051517] TCP: Hash tables configured (established 16384 bind 16384)
[    1.058157] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[    1.064234] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[    1.070843] NET: Registered protocol family 1
[    1.075237] PCI: CLS 0 bytes, default 64
[    1.076152] kvm [1]: 8-bit VMID
[    1.080050] kvm [1]: vgic interrupt IRQ1
[    1.084184] kvm [1]: Hyp mode initialized successfully
[    1.092769] Initialise system trusted keyrings
[    1.097385] workingset: timestamp_bits=44 max_order=19 bucket_order=0
[    1.109696] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    1.116049] 9p: Installing v9fs 9p2000 file system support
[    1.121626] pstore: using deflate compression
[    1.128782] Key type asymmetric registered
[    1.132900] Asymmetric key parser 'x509' registered
[    1.137838] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244)
[    1.145400] io scheduler noop registered
[    1.149332] io scheduler deadline registered
[    1.153749] io scheduler cfq registered (default)
[    1.158463] io scheduler mq-deadline registered
[    1.163006] io scheduler kyber registered
[    1.170982] pinctrl-single f7010000.pinmux: 159 pins, size 636
[    1.177206] pinctrl-single f8001800.pinmux: 30 pins, size 120
[    1.183389] pinctrl-single f7010800.pinmux: 163 pins, size 652
[    1.191439] pl061_gpio f702f000.gpio: PL061 GPIO chip @0x00000000f702f000 registered
[    1.199463] pl061_gpio f702c000.gpio: PL061 GPIO chip @0x00000000f702c000 registered
[    1.207475] pl061_gpio f7029000.gpio: PL061 GPIO chip @0x00000000f7029000 registered
[    1.215467] pl061_gpio f7026000.gpio: PL061 GPIO chip @0x00000000f7026000 registered
[    1.223474] pl061_gpio f7023000.gpio: PL061 GPIO chip @0x00000000f7023000 registered
[    1.231456] pl061_gpio f8013000.gpio: PL061 GPIO chip @0x00000000f8013000 registered
[    1.239453] pl061_gpio f7020000.gpio: PL061 GPIO chip @0x00000000f7020000 registered
[    1.247444] pl061_gpio f702e000.gpio: PL061 GPIO chip @0x00000000f702e000 registered
[    1.255448] pl061_gpio f702b000.gpio: PL061 GPIO chip @0x00000000f702b000 registered
[    1.263437] pl061_gpio f7028000.gpio: PL061 GPIO chip @0x00000000f7028000 registered
[    1.271433] pl061_gpio f7025000.gpio: PL061 GPIO chip @0x00000000f7025000 registered
[    1.279436] pl061_gpio f7022000.gpio: PL061 GPIO chip @0x00000000f7022000 registered
[    1.287441] pl061_gpio f8012000.gpio: PL061 GPIO chip @0x00000000f8012000 registered
[    1.295437] pl061_gpio f702d000.gpio: PL061 GPIO chip @0x00000000f702d000 registered
[    1.303449] pl061_gpio f702a000.gpio: PL061 GPIO chip @0x00000000f702a000 registered
[    1.311441] pl061_gpio f7027000.gpio: PL061 GPIO chip @0x00000000f7027000 registered
[    1.319311] gpio gpiochip16: names 9 do not match number of GPIOs 8
[    1.325747] pl061_gpio f7024000.gpio: PL061 GPIO chip @0x00000000f7024000 registered
[    1.333606] gpio gpiochip17: names 9 do not match number of GPIOs 8
[    1.340029] pl061_gpio f8014000.gpio: PL061 GPIO chip @0x00000000f8014000 registered
[    1.348046] pl061_gpio f7021000.gpio: PL061 GPIO chip @0x00000000f7021000 registered
[    1.356041] pl061_gpio f8011000.gpio: PL061 GPIO chip @0x00000000f8011000 registered
[    1.366324] EINJ: ACPI disabled.
[    1.373767] k3-dma f7370000.dma: initialized
[    1.383969] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    1.392344] SuperH (H)SCI(F) driver initialized
[    1.397313] msm_serial: driver initialized
[    1.409695] loop: module loaded
[    1.414718] VDD_3V3: supplied by SYS_5V
[    1.424184] libphy: Fixed MDIO Bus: probed
[    1.428758] tun: Universal TUN/TAP device driver, 1.6
[    1.434565] usbcore: registered new interface driver asix
[    1.440032] usbcore: registered new interface driver ax88179_178a
[    1.446288] VFIO - User Level meta-driver version: 0.3
[    1.452172] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.458741] ehci-pci: EHCI PCI platform driver
[    1.463245] ehci-platform: EHCI generic platform driver
[    1.468603] ehci-orion: EHCI orion driver
[    1.472705] ehci-exynos: EHCI EXYNOS driver
[    1.476968] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.483167] ohci-pci: OHCI PCI platform driver
[    1.487670] ohci-platform: OHCI generic platform driver
[    1.492999] ohci-exynos: OHCI EXYNOS driver
[    1.497646] usbcore: registered new interface driver usb-storage
[    1.503761] usbcore: registered new interface driver usbserial_generic
[    1.510324] usbserial: USB Serial support registered for generic
[    1.517162] input: HISI 65xx PowerOn Key as /devices/platform/f8000000.pmic/hi65xx-powerkey.0.auto/input/input0
[    1.528754] rtc-pl031 f8004000.rtc: rtc core: registered pl031 as rtc0
[    1.535614] rtc-pl031 f8003000.rtc: rtc core: registered pl031 as rtc1
[    1.542760] i2c /dev entries driver
[    1.548155] WARNING: CPU: 1 PID: 1 at arch/arm64/mm/ioremap.c:58 __ioremap_caller+0xd0/0xe0
[    1.556510] Modules linked in:
[    1.559567] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.19.5 #1
[    1.565482] Hardware name: HiKey Development Board (DT)
[    1.570704] pstate: 80000005 (Nzcv daif -PAN -UAO)
[    1.575494] pc : __ioremap_caller+0xd0/0xe0
[    1.579676] lr : __ioremap_caller+0x54/0xe0
[    1.583853] sp : ffff0000080639c0
[    1.587162] x29: ffff0000080639c0 x28: 0000000000000000
[    1.592474] x27: ffff000009002068 x26: ffff000008f426b0
[    1.597787] x25: ffff000008f50630 x24: 0000000000000000
[    1.603098] x23: 00e8000000000f07 x22: ffff00000865ea08
[    1.608409] x21: 0000000000000000 x20: 0000000005f01000
[    1.613719] x19: 0000000000001000 x18: ffffffffffffffff
[    1.619029] x17: 0000000000000000 x16: 0000000000000016
[    1.624342] x15: ffff0000090996c8 x14: ffff80007cf94d0a
[    1.629654] x13: ffff80007cf94d09 x12: 0000000000000030
[    1.634965] x11: 0000000000000018 x10: 0101010101010101
[    1.640274] x9 : 0000000000000003 x8 : 0000000000eff000
[    1.645585] x7 : 0000000000000018 x6 : ffff000009267f90
[    1.650897] x5 : 0000000000000002 x4 : 0000000000000002
[    1.656210] x3 : 0000000006dff000 x2 : ffff000009267fa8
[    1.661522] x1 : 0000000000000001 x0 : 0000000000000001
[    1.666832] Call trace:
[    1.669276]  __ioremap_caller+0xd0/0xe0
[    1.673108]  __ioremap+0x10/0x18
[    1.676335]  of_syscon_register+0xe0/0x2f0
[    1.680428]  syscon_node_to_regmap+0x74/0xc0
[    1.684697]  syscon_reboot_mode_probe+0x58/0x118
[    1.689312]  platform_drv_probe+0x50/0xb0
[    1.693319]  really_probe+0x1ec/0x3c0
[    1.696980]  driver_probe_device+0x124/0x148
[    1.701249]  __driver_attach+0x134/0x138
[    1.705172]  bus_for_each_dev+0x68/0xc8
[    1.709002]  driver_attach+0x20/0x28
[    1.712575]  bus_add_driver+0x1b8/0x298
[    1.716408]  driver_register+0x60/0x110
[    1.720239]  __platform_driver_register+0x44/0x50
[    1.724944]  syscon_reboot_mode_driver_init+0x18/0x20
[    1.729993]  do_one_initcall+0x58/0x170
[    1.733828]  kernel_init_freeable+0x194/0x23c
[    1.738185]  kernel_init+0x10/0x108
[    1.741673]  ret_from_fork+0x10/0x18
[    1.745250] ---[ end trace f40323267650f3ae ]---
[    1.749904] syscon-reboot-mode: probe of 5f01000.reboot-mode-syscon:reboot-mode failed with error -12
[    1.761192] sp805-wdt f8005000.watchdog: registration successful
[    1.770600] sdhci: Secure Digital Host Controller Interface driver
[    1.776812] sdhci: Copyright(c) Pierre Ossman
[    1.781520] Synopsys Designware Multimedia Card Interface Driver
[    1.788277] dwmmc_k3 f723f000.dwmmc2: fifo-depth property not found, using value of FIFOTH register as default
[    1.798409] dwmmc_k3 f723f000.dwmmc2: IDMAC supports 32-bit address mode.
[    1.806281] dwmmc_k3 f723f000.dwmmc2: Using internal DMA controller.
[    1.812655] dwmmc_k3 f723f000.dwmmc2: Version ID is 250a
[    1.818023] dwmmc_k3 f723f000.dwmmc2: DW MMC controller at irq 13,32 bit host data width,128 deep fifo
[    1.827444] dwmmc_k3 f723f000.dwmmc2: Linked as a consumer to regulator.1
[    1.834312] dwmmc_k3 f723f000.dwmmc2: allocated mmc-pwrseq
[    1.839835] mmc_host mmc0: card is non-removable.
[    1.857829] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[    1.881539] dwmmc_k3 f723e000.dwmmc1: fifo-depth property not found, using value of FIFOTH register as default
[    1.893123] dwmmc_k3 f723e000.dwmmc1: IDMAC supports 32-bit address mode.
[    1.898754] dwmmc_k3 f723f000.dwmmc2: card claims to support voltages below defined range
[    1.908499] dwmmc_k3 f723e000.dwmmc1: Using internal DMA controller.
[    1.914889] dwmmc_k3 f723e000.dwmmc1: Version ID is 250a
[    1.920281] dwmmc_k3 f723e000.dwmmc1: DW MMC controller at irq 21,32 bit host data width,128 deep fifo
[    1.929703] dwmmc_k3 f723e000.dwmmc1: Linked as a consumer to regulator.5
[    1.936563] dwmmc_k3 f723e000.dwmmc1: Linked as a consumer to regulator.4
[    1.937214] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 25000000Hz, actual 24800000HZ div = 0)
[    1.943442] dwmmc_k3 f723e000.dwmmc1: Got CD GPIO
[    1.959235] mmc0: new SDIO card at address 0001
[    1.970930] mmc_host mmc1: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[    1.995834] dwmmc_k3 f723d000.dwmmc0: fifo-depth property not found, using value of FIFOTH register as default
[    2.008126] dwmmc_k3 f723d000.dwmmc0: IDMAC supports 32-bit address mode.
[    2.015965] dwmmc_k3 f723d000.dwmmc0: Using internal DMA controller.
[    2.022377] dwmmc_k3 f723d000.dwmmc0: Version ID is 250a
[    2.027768] dwmmc_k3 f723d000.dwmmc0: DW MMC controller at irq 22,32 bit host data width,256 deep fifo
[    2.037331] dwmmc_k3 f723d000.dwmmc0: Linked as a consumer to regulator.10
[    2.044312] mmc_host mmc2: card is non-removable.
[    2.064352] mmc_host mmc2: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[    2.090718] sdhci-pltfm: SDHCI platform and OF driver helper
[    2.100496] ledtrig-cpu: registered to indicate activity on CPUs
[    2.107761] usbcore: registered new interface driver usbhid
[    2.113377] usbhid: USB HID core driver
[    2.119035] optee: probing for conduit method from DT.
[    2.124226] optee: revision 1.0
[    2.124232] optee: api revision mismatch
[    2.132026] NET: Registered protocol family 10
[    2.137595] Segment Routing with IPv6
[    2.141397] NET: Registered protocol family 17
[    2.145885] 9pnet: Installing 9P2000 support
[    2.150249] Key type dns_resolver registered
[    2.155863] registered taskstats version 1
[    2.159987] Loading compiled-in X.509 certificates
[    2.170338] f7113000.uart: ttyAMA3 at MMIO 0xf7113000 (irq = 9, base_baud = 0) is a PL011 rev2
[    2.179853] f7112000.uart: ttyAMA2 at MMIO 0xf7112000 (irq = 24, base_baud = 0) is a PL011 rev2
[    2.189395] 5V_HUB: supplied by SYS_5V
[    2.193570] ssp-pl022 f7106000.spi: ARM PL022 driver, device ID: 0x00041022
[    2.200685] ssp-pl022 f7106000.spi: mapped registers from 0x00000000f7106000 to (____ptrval____)
[    2.209551] ssp-pl022 f7106000.spi: setup for DMA on RX dma0chan0, TX dma0chan1
[    2.220803] phy phy-soc:usbphy.0: Linked as a consumer to regulator.13
[    2.228104] mmc_host mmc2: Bus speed (slot 0) = 198400000Hz (slot req 200000000Hz, actual 198400000HZ div = 0)
[    2.238625] dwc2 f72c0000.usb: f72c0000.usb supply vusb_d not found, using dummy regulator
[    2.246963] dwc2 f72c0000.usb: Linked as a consumer to regulator.0
[    2.253175] dwc2 f72c0000.usb: f72c0000.usb supply vusb_a not found, using dummy regulator
[    2.261696] mmc2: new HS200 MMC card at address 0001
[    2.267511] mmcblk2: mmc2:0001 8GND3R 7.28 GiB
[    2.272675] mmcblk2boot0: mmc2:0001 8GND3R partition 1 4.00 MiB
[    2.279225] mmcblk2boot1: mmc2:0001 8GND3R partition 2 4.00 MiB
[    2.285497] mmcblk2rpmb: mmc2:0001 8GND3R partition 3 512 KiB, chardev (239:0)
[    2.298967] random: fast init done
[    2.303494]  mmcblk2: p1 p2 p3 p4 p5 p6 p7 p8 p11 p12 p13 p14 p19
[    2.470369] dwc2 f72c0000.usb: EPs: 16, dedicated fifos, 1920 entries in SPRAM
[    2.481583] dwc2 f72c0000.usb: DWC OTG Controller
[    2.486389] dwc2 f72c0000.usb: new USB bus registered, assigned bus number 1
[    2.493526] dwc2 f72c0000.usb: irq 15, io mem 0xf72c0000
[    2.500614] hub 1-0:1.0: USB hub found
[    2.504430] hub 1-0:1.0: 1 port detected
[    2.510923] rtc-pl031 f8004000.rtc: setting system clock to 1970-01-01 00:01:06 UTC (66)
[    2.519517] LDO2_2V8: disabling
[    2.522687] LDO7_SDIO: disabling
[    2.525953] LDO10_2V85: disabling
[    2.529270] LDO13_1V8: disabling
[    2.532510] LDO14_2V8: disabling
[    2.535749] LDO17_2V5: disabling
[    2.539410] uart-pl011 f8015000.uart: no DMA platform data
[    2.544975] Waiting 3 sec before mounting root device...
[    2.902164] dwc2 f72c0000.usb: Set speed to high-speed
[    2.907463] usb 1-1: new high-speed USB device number 2 using dwc2
[    3.102147] dwc2 f72c0000.usb: Set speed to high-speed
[    3.134486] hub 1-1:1.0: USB hub found
[    3.138621] hub 1-1:1.0: 3 ports detected
[    5.629170] VFS: Mounted root (squashfs filesystem) readonly on device 179:12.
[    5.640112] devtmpfs: mounted
[    5.643658] Freeing unused kernel memory: 1280K
[    5.648346] Run /sbin/init as init process
[    6.867253] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[    6.963597] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 25000000Hz, actual 24800000HZ div = 0)
[    6.992755] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[    7.094372] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 25000000Hz, actual 24800000HZ div = 0)
[    8.002589] uart-pl011 f7112000.uart: no DMA platform data
[    8.520368] uart-pl011 f7113000.uart: no DMA platform data
[   10.687626] FAT-fs (mmcblk2p14): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[   12.191251] EXT4-fs (mmcblk2p19): mounted filesystem with ordered data mode. Opts: (null)
[   12.915328] random: rngd: uninitialized urandom read (8 bytes read)
[   12.921729] random: crng init done
[   13.493090] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   13.532140] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   13.539541] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[   13.548225] cfg80211: failed to load regulatory.db
[   14.643845] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[   14.737903] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 25000000Hz, actual 24800000HZ div = 0)
[   14.798563] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[   14.871919] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 25000000Hz, actual 24800000HZ div = 0)
[   15.093055] wlcore: wl18xx HW: 183x or 180x, PG 2.2 (ROM 0x11)
[   15.094361] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[   15.101167] wlcore: WARNING Detected unconfigured mac address in nvs, derive from fuse instead.
[   15.120605] wlcore: WARNING This default nvs file can be removed from the file system
[   15.140956] Bridge firewalling registered
[   15.171440] wlcore: loaded
[   24.274274] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual 400000HZ div = 31)
[   24.343979] mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 25000000Hz, actual 24800000HZ div = 0)
[   24.855506] wlcore: PHY firmware version: Rev 8.2.0.0.240
[   24.966927] wlcore: firmware booted (Rev 8.9.0.0.76)
[   25.026727] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   25.273553] usbcore: registered new interface driver qcserial
[   25.279451] usbserial: USB Serial support registered for Qualcomm USB modem
[   25.298713] usbcore: registered new interface driver cdc_wdm
[   26.069991] wlan0: authenticate with 7c:57:3c:d3:9b:41
[   26.079766] wlan0: send auth to 7c:57:3c:d3:9b:41 (try 1/3)
[   26.100015] wlan0: authenticated
[   26.105618] wlan0: associate with 7c:57:3c:d3:9b:41 (try 1/3)
[   26.116812] wlan0: RX AssocResp from 7c:57:3c:d3:9b:41 (capab=0x431 status=0 aid=1)
[   26.157936] wlcore: Association completed.
[   26.176111] wlan0: associated
[   26.193151] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

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