On 09/05/2014 01:19 AM, Graeme Gregory wrote:
Hi Narinder,
That message is normal and occurs on successful boots for FVP/Juno as well.
I do not know why your kernel is stopping, but I believe the next step in the kernel boot process is to bring up secondary CPUs via PSCI so maybe a PSCI issue on the platform?
Graeme
I've got a patch coming to fix the message; it's occurring even if there is no DT whatsoever and that seems sort of silly.
But, Graeme is essentially correct: either secondary CPU startup is happening, or something gets stuck during device probe before printk can report it. At this stage, the only secondary CPU boot protocol supported is via PSCI; there is a parking protocol also but that's still being implemented. You could use the spin-table protocol but I would not recommend it -- it *will* go away and very soon.
On Thu, Sep 04, 2014 at 03:44:21PM -0700, Narinder Dhillon wrote:
Hi All, I am booting latest LEG kernel from UEFI that has ACPI tables for ARMv8 core. ACPI tables are parsed but kernel stops at a certain point in the boot cycle and I am not sure where and why. In particular, this statement seems odd because it should not be looking for device tree at all. No CPU information found in DT Kernel console output pasted below. Any help would be appreciated. Thanx, EFI stub: Booting Linux Kernel... Initializing cgroup subsys cpu Linux version 3.17.0-rc2+ (narinder@ndhillon-lnx) (gcc version 4.7.0 (Cavium Development Version) ) #3 SMP PREEMPT Thu Sep 4 15:33:38 PDT 2014 CPU: AArch64 Processor [430f0a10] revision 0 Detected VIPT I-cache on CPU0 L1_CACHE_BYTES smaller than the Cache Writeback Granule (64 < 128) Memory limited to 1024MB Early serial console at I/O port 0x0 (options '') bootconsole [uart0] enabled efi: Getting EFI parameters from FDT: EFI v2.40 by Cavium Thunder cn88xx EFI Sep 1 2014 20:10:17 efi: ACPI=0x7ab85000 ACPI 2.0=0x7ab85014 cma: Reserved 16 MiB at 78c00000 ACPI: Early table checksum verification disabled ACPI: RSDP 0x000000007AB85014 000024 (v02 CAVIUM) ACPI: XSDT 0x000000007AB840E8 00003C (v01 CAVIUM THUNDERX 00000000 01000013) ACPI: FACP 0x000000007AB81000 00010C (v05 CAVIUM THUNDERX 00000000 INTL 20140828) ACPI BIOS Warning (bug): 32/64X FACS address mismatch in FADT: 0x7AB80000/0x0000000000000001, using 32-bit address (20140724/tbfadt-283) ACPI: DSDT 0x000000007AB82000 000117 (v02 CAVIUM THUNDERX 00000001 INTL 20140828) ACPI: APIC 0x000000007AB83000 0002B4 (v04 CAVIUM THUNDERX 00000001 INTL 20140828) ACPI: GTDT 0x000000007AB7F000 0000E0 (v02 CAVIUM THUNDERX 00000001 INTL 20140828) On node 0 totalpages: 521216 DMA zone: 7126 pages used for memmap DMA zone: 0 pages reserved DMA zone: 521216 pages, LIFO batch:31 BUG: not creating id mapping for 0x00008ee000000000 psci: probing for conduit method from ACPI. psci: Using standard PSCI v0.2 function IDs ACPI: GICC (acpi_id[0x0000] address[0000801000000000] MPDIR[0x0] enabled) ACPI: GICC (acpi_id[0x0001] address[0000801000000000] MPDIR[0x1] enabled) ACPI: GICC (acpi_id[0x0002] address[0000801000000000] MPDIR[0x2] enabled) ACPI: GICC (acpi_id[0x0003] address[0000801000000000] MPDIR[0x3] enabled) ACPI: GICC (acpi_id[0x0004] address[0000801000000000] MPDIR[0x4] enabled) ACPI: GICC (acpi_id[0x0005] address[0000801000000000] MPDIR[0x5] enabled) ACPI: GICC (acpi_id[0x0006] address[0000801000000000] MPDIR[0x6] enabled) ACPI: GICC (acpi_id[0x0007] address[0000801000000000] MPDIR[0x7] enabled) ACPI: 8 CPUs enabled, 8 CPUs total PERCPU: Embedded 12 pages/cpu @ffffffc07edbc000 s17472 r8192 d23488 u49152 pcpu-alloc: s17472 r8192 d23488 u49152 alloc=12*4096 pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [0] 4 [0] 5 [0] 6 [0] 7 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 514090 Kernel command line: BOOT_IMAGE=/boot/Image root=/dev/sda2 console=ttyAMA0 mem=1024M earlycon=pl011,0x87e024000000 debug maxcpus=16 rw log_buf_len individual max cpu contribution: 4096 bytes log_buf_len total cpu_extra contributions: 28672 bytes log_buf_len min size: 16384 bytes log_buf_len: 65536 bytes early log buf free: 12956(79%) PID hash table entries: 4096 (order: 3, 32768 bytes) Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes) Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes) Memory: 1957372K/2084864K available (4948K kernel code, 446K rwdata, 1928K rodata, 305K init, 229K bss, 127492K reserved) Virtual kernel memory layout: vmalloc : 0xffffff8000000000 - 0xffffffbdffff0000 ( 247 GB) vmemmap : 0xffffffbe00000000 - 0xffffffbfc0000000 ( 7 GB maximum) 0xffffffbe0002a000 - 0xffffffbe01c00000 ( 27 MB actual) PCI I/O : 0xffffffbffa000000 - 0xffffffbffb000000 ( 16 MB) fixed : 0xffffffbffbdfe000 - 0xffffffbffbdff000 ( 4 KB) modules : 0xffffffbffc000000 - 0xffffffc000000000 ( 64 MB) memory : 0xffffffc000000000 - 0xffffffc07f400000 ( 2036 MB) .init : 0xffffffc000739000 - 0xffffffc000785440 ( 306 KB) .text : 0xffffffc000080000 - 0xffffffc0007380f4 ( 6881 KB) .data : 0xffffffc000786000 - 0xffffffc0007f5b98 ( 447 KB) SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=8, Nodes=1 Preemptible hierarchical RCU implementation. NR_IRQS:64 nr_irqs:64 0 clocksource_of_init: no matching clocksources found Architected cp15 timer(s) running at 100.00MHz (phys). sched_clock: 56 bits at 100MHz, resolution 10ns, wraps every 2748779069440ns Console: colour dummy device 80x25 allocated 8388608 bytes of page_cgroup please try 'cgroup_disable=memory' option if you don't want memory cgroups Calibrating delay loop (skipped), value calculated using timer frequency.. 200.00 BogoMIPS (lpj=1000000) pid_max: default: 32768 minimum: 301 ACPI: Core revision 20140724 ACPI: All ACPI Tables successfully acquired Security Framework initialized Mount-cache hash table entries: 4096 (order: 3, 32768 bytes) Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes) Initializing cgroup subsys memory Initializing cgroup subsys hugetlb No CPU information found in DT hw perfevents: enabled with arm/armv8-pmuv3 PMU driver, 7 counters available Remapping and enabling EFI services. Freed 0x44f8000 bytes of EFI boot services memory
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