Hi Abhishek, Sivaprakash,
I see that you guys added support for the IPQ6018 CP01 board.
I am working with the Compex WPQ618 board - which is a variant of
that but am hitting problems.
I have tried a few different kernel versions (5.8, 5.9) but am now
concentrating on linux-5.10-rc5. If I build a defconfig with that,
and add a small root filesystem (working on other ARM64 targets) then
ultimately the boot hangs. Console output:
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x51af8014]
[ 0.000000] Linux version 5.10.0-rc5-00015-g127c501a03d5 (gerg@gumby)
(aarch64-linux-musl-gcc (GCC) 8.3.0, GNU ld (GNU Binutils) 2.32) #11 SMP
PREEMPT Thu Nov 26 12:11:08 AEST 2020
[ 0.000000] Machine model: Qualcomm Technologies, Inc. IPQ6018/AP-CP01-C1
[ 0.000000] earlycon: msm_serial_dm0 at MMIO 0x00000000078b1000
(options '')
[ 0.000000] printk: bootconsole [msm_serial_dm0] enabled
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 32 MiB at 0x000000007e000000
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem
0x0000000040000000-0x000000007fffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0x7de05b00-0x7de07fff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] DMA32 empty
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x00000000484fffff]
[ 0.000000] node 0: [mem 0x0000000048700000-0x000000004a9fffff]
[ 0.000000] node 0: [mem 0x000000004d300000-0x000000007fffffff]
[ 0.000000] Zeroed struct page in unavailable ranges: 256 pages
[ 0.000000] Initmem setup node 0 [mem
0x0000000040000000-0x000000007fffffff]
[ 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: MIGRATE_INFO_TYPE not supported.
[ 0.000000] psci: SMC Calling Convention v1.0
[ 0.000000] percpu: Embedded 23 pages/cpu s56152 r8192 d29864 u94208
[ 0.000000] Detected VIPT I-cache on CPU0
[ 0.000000] CPU features: detected: ARM erratum 845719
[ 0.000000] CPU features: detected: Spectre-v4
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 247040
[ 0.000000] Policy zone: DMA
[ 0.000000] Kernel command line: console=ttyMSM0,115200n8
earlycon=msm_serial_dm,0x78B1000
[ 0.000000] Dentry cache hash table entries: 131072 (order: 8,
1048576 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288
bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 919192K/1004544K available (14080K kernel code,
2796K rwdata, 7576K rodata, 7104K init, 517K bss, 52584K reserved,
32768K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] rcu: RCU event tracing is enabled.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=4.
[ 0.000000] Trampoline variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay
is 25 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] random: get_random_bytes called from
start_kernel+0x32c/0x4ec with crng_init=0
[ 0.000000] arch_timer: cp15 and mmio timer(s) running at 24.00MHz
(virt/virt).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff
max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[ 0.000005] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps
every 4398046511097ns
[ 0.011005] Console: colour dummy device 80x25
[ 0.018824] Calibrating delay loop (skipped), value calculated using
timer frequency.. 48.00 BogoMIPS (lpj=96000)
[ 0.023273] pid_max: default: 32768 minimum: 301
[ 0.033681] LSM: Security Framework initializing
[ 0.038339] Mount-cache hash table entries: 2048 (order: 2, 16384
bytes, linear)
[ 0.042891] Mountpoint-cache hash table entries: 2048 (order: 2,
16384 bytes, linear)
[ 0.051872] rcu: Hierarchical SRCU implementation.
[ 0.059217] EFI services will not be available.
[ 0.062915] smp: Bringing up secondary CPUs ...
[ 0.067741] Detected VIPT I-cache on CPU1
[ 0.067809] CPU1: Booted secondary processor 0x0000000001 [0x51af8014]
[ 0.068479] Detected VIPT I-cache on CPU2
[ 0.068522] CPU2: Booted secondary processor 0x0000000002 [0x51af8014]
[ 0.069163] Detected VIPT I-cache on CPU3
[ 0.069202] CPU3: Booted secondary processor 0x0000000003 [0x51af8014]
[ 0.069288] smp: Brought up 1 node, 4 CPUs
[ 0.103219] SMP: Total of 4 processors activated.
[ 0.107292] CPU features: detected: 32-bit EL0 Support
[ 0.112086] CPU features: detected: CRC32 instructions
[ 0.117104] CPU features: detected: 32-bit EL1 Support
[ 0.133016] CPU: All CPU(s) started at EL1
[ 0.133075] alternatives: patching kernel code
[ 0.137341] devtmpfs: initialized
[ 0.143426] KASLR disabled due to lack of seed
[ 0.144228] clocksource: jiffies: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.148200] futex hash table entries: 1024 (order: 4, 65536 bytes,
linear)
[ 0.159379] pinctrl core: initialized pinctrl subsystem
[ 0.166130] DMI not present or invalid.
[ 0.170512] NET: Registered protocol family 16
[ 0.175725] DMA: preallocated 128 KiB GFP_KERNEL pool for atomic
allocations
[ 0.178245] DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA pool for
atomic allocations
[ 0.185541] DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA32 pool for
atomic allocations
[ 0.193223] audit: initializing netlink subsys (disabled)
[ 0.201030] audit: type=2000 audit(0.144:1): state=initialized
audit_enabled=0 res=1
[ 0.202094] thermal_sys: Registered thermal governor 'step_wise'
[ 0.206341] thermal_sys: Registered thermal governor 'power_allocator'
[ 0.214244] cpuidle: using governor menu
[ 0.226689] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.230646] ASID allocator initialised with 65536 entries
[ 0.238674] Serial: AMBA PL011 UART driver
[ 0.254978] OF: /soc/pinctrl@1000000: (null) = 3 found 3
[ 0.279387] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.279427] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages
[ 0.285229] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.291878] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages
[ 0.299845] cryptd: max_cpu_qlen set to 1000
[ 0.307657] ACPI: Interpreter disabled.
[ 0.310917] iommu: Default domain type: Translated
[ 0.313207] vgaarb: loaded
[ 0.318249] SCSI subsystem initialized
[ 0.321084] usbcore: registered new interface driver usbfs
[ 0.324455] usbcore: registered new interface driver hub
[ 0.329935] usbcore: registered new device driver usb
[ 0.335911] pps_core: LinuxPPS API ver. 1 registered
[ 0.340289] pps_core: Software ver. 5.3.6 - Copyright 2005-2007
Rodolfo Giometti <giometti@xxxxxxxx>
[ 0.345349] PTP clock support registered
[ 0.354564] EDAC MC: Ver: 3.0.0
[ 0.358984] qcom_scm: convention: smc arm 64
[ 0.362470] FPGA manager framework
[ 0.363612] qcom_rpm_smd_regulator
rpm-glink:glink-channel:regulators: Supply for s2 (s2) resolved to itself
[ 0.365813] Advanced Linux Sound Architecture Driver Initialized.
[ 0.368949] s2: supplied by regulator-dummy
[ 0.369139] qcom_rpm_smd_regulator
rpm-glink:glink-channel:regulators: Supply for l2 (l2) resolved to itself
[ 0.388929] l2: supplied by regulator-dummy
[ 0.388933] clocksource: Switched to clocksource arch_sys_counter
[ 0.389183] VFS: Disk quotas dquot_6.6.0
[ 0.409221] VFS: Dquot-cache hash table entries: 512 (order 0, 4096
bytes)
[ 0.413356] pnp: PnP ACPI: disabled
[ 0.427525] NET: Registered protocol family 2
[ 0.428032] tcp_listen_portaddr_hash hash table entries: 512 (order:
1, 8192 bytes, linear)
[ 0.430917] TCP established hash table entries: 8192 (order: 4, 65536
bytes, linear)
[ 0.439120] TCP bind hash table entries: 8192 (order: 5, 131072
bytes, linear)
[ 0.447161] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.454176] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
[ 0.460609] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes,
linear)
[ 0.467054] NET: Registered protocol family 1
[ 0.474657] RPC: Registered named UNIX socket transport module.
[ 0.478454] RPC: Registered udp transport module.
[ 0.484198] RPC: Registered tcp transport module.
[ 0.489030] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.493730] PCI: CLS 0 bytes, default 64
[ 0.570463] hw perfevents: enabled with armv8_cortex_a53 PMU driver,
7 counters available
[ 0.570738] kvm [1]: HYP mode not available
[ 21.584922] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 21.584959] rcu: 0-...0: (9 GPs behind)
idle=432/1/0x4000000000000000 softirq=17/18 fqs=2625
[ 21.590002] (detected by 1, t=5253 jiffies, g=-1127, q=170)
[ 84.604920] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
No more output.
Any idea what might be wrong?
Can you build kernels from mainline that run on IPQ6018 targets
with no problems?
I have managed to build 5.8, 5.9 and even 5.10-rc5 working kernels.
If I strip down the kernel configuration to a more minimal setup - with
only Qualcomm SoC and a basic set of drivers I can get a boot to user
space.
But they do not run reliably. As soon as I load them up with a few
running processes they either lock up hard, CPU reset, or
occasionally oops with something like this:
Internal error: synchronous external abort: 96000010 [#1] SMP
Modules linked in:
CPU: 2 PID: 1243 Comm: modem Not tainted 5.10.0-rc5-00015-g127c501a03d5 #1
Hardware name: Qualcomm Technologies, Inc. IPQ6018/AP-CP01-C1 (DT)
pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--)
pc : copy_page_range+0x1f4/0xb90
lr : copy_page_range+0xb50/0xb90
sp : ffffffc011eebaa0
x29: ffffffc011eebaa0 x28: 0000007f93822000
x27: 0000007f93822000 x26: ffffff80092cb4d0
x25: 0000000000000000 x24: 0000000000000000
x23: ffffffc010a887c8 x22: ffffff800936ea00
x21: ffffff800936d880 x20: ffffff80092cb4d0
x19: ffffff800a5fcff0 x18: 0000000000000014
x17: 0000000032a519c8 x16: 00000000f706d472
x15: 0000000000000001 x14: 0000000000000002
x13: 0000000000032602 x12: 000000000000000b
x11: 0000000000000000 x10: 0000000000000000
x9 : ffffffc0109b9ae0 x8 : ffffffc010b4c2c0
x7 : 0000000000000008 x6 : 00000000fffffff4
x5 : ffffff800936ea64 x4 : 0000007f93822fff
x3 : 0000007f93822fff x2 : 0000007f93a00000
x1 : 0000000000000002 x0 : ffffff800a6004e0
Call trace:
copy_page_range+0x1f4/0xb90
dup_mm.isra.100+0x368/0x480
copy_process+0x788/0x1568
kernel_clone+0xe0/0x3d0
__do_sys_clone+0x64/0x90
__arm64_sys_clone+0x20/0x30
el0_svc_common.constprop.3+0x8c/0x170
do_el0_svc+0x24/0x90
el0_sync_handler+0x118/0x168
el0_sync+0x158/0x180
Code: d503201f 910803e0 a930fc1f f9403fe0 (f9400000)
---[ end trace 0232e313a3a0f1ea ]---
Kernel panic - not syncing: synchronous external abort: Fatal exception
SMP: stopping secondary CPUs
SMP: failed to stop secondary CPUs 0,2
Kernel Offset: disabled
CPU features: 0x0040002,60002004
Memory Limit: none
Rebooting in 5 seconds..
SMP: stopping secondary CPUs
Usually it is some type of abort if I do get an oops.
If I just let the system sit there idle with a shell and not much else
running it seems to be stable.
If I run the really ancient openwrt distro that qualcomm/compex supply
(based on linux-4.4) then this hardware seems to run fine. So I am not
suspecting a hardware problem with it yet.
Regards
Greg
