Hi All, I have a custom board that uses the Freescale/NXP T2080 SoC.
The board boots fine using v4.19.60 but when I use v5.1.21 it locks up waiting for the other CPUs to come online (earlyprintk output below). If I set maxcpus=0 then the system boots all the way through to userland. The same thing happens with 5.3-rc2. The defconfig I'm using is https://gist.github.com/cpackham/f24d0b426f3 de0eaaba17b82c3528a9d it was updated from the working v4.19.60 defconfig using make olddefconfig. Does this ring any bells for anyone? I haven't dug into the differences between the working an non-working versions yet. I'll start looking now. Booting... MMU: Supported page sizes 4 KB as direct 2048 KB as direct & indirect 4096 KB as direct 16384 KB as direct 65536 KB as direct 262144 KB as direct 1048576 KB as direct MMU: Book3E HW tablewalk enabled Linux version 5.1.21-at1+ (@chrisp-dl) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0)) #24 SMP PREEMPT Mon Aug 5 01:42:00 UTC 2019 Found initrd at 0xc00000002f045000:0xc000000030000000 Using CoreNet Generic machine description Found legacy serial port 0 for /soc@ffe000000/serial@11c500 mem=ffe11c500, taddr=ffe11c500, irq=0, clk=300000000, speed=0 Found legacy serial port 1 for /soc@ffe000000/serial@11c600 mem=ffe11c600, taddr=ffe11c600, irq=0, clk=300000000, speed=0 Found legacy serial port 2 for /soc@ffe000000/serial@11d500 mem=ffe11d500, taddr=ffe11d500, irq=0, clk=300000000, speed=0 Found legacy serial port 3 for /soc@ffe000000/serial@11d600 mem=ffe11d600, taddr=ffe11d600, irq=0, clk=300000000, speed=0 printk: bootconsole [udbg0] enabled CPU maps initialized for 2 threads per core (thread shift is 1) Allocated 1856 bytes for 8 pacas ----------------------------------------------------- phys_mem_size = 0x100000000 dcache_bsize = 0x40 icache_bsize = 0x40 cpu_features = 0x00000003009003b6 possible = 0x00000003009003b6 always = 0x00000003008003b4 cpu_user_features = 0xdc008000 0x08000000 mmu_features = 0x000a0010 firmware_features = 0x0000000000000000 ----------------------------------------------------- CoreNet Generic board barrier-nospec: using isync; sync as speculation barrier barrier-nospec: patched 412 locations Top of RAM: 0x100000000, Total RAM: 0x100000000 Memory hole size: 0MB Zone ranges: DMA [mem 0x0000000000000000-0x000000007fffefff] Normal [mem 0x000000007ffff000-0x00000000ffffffff] Movable zone start for each node Early memory node ranges node 0: [mem 0x0000000000000000-0x00000000ffffffff] Initmem setup node 0 [mem 0x0000000000000000-0x00000000ffffffff] On node 0 totalpages: 1048576 DMA zone: 7168 pages used for memmap DMA zone: 0 pages reserved DMA zone: 524287 pages, LIFO batch:63 Normal zone: 7169 pages used for memmap Normal zone: 524289 pages, LIFO batch:63 MMU: Allocated 2112 bytes of context maps for 255 contexts percpu: Embedded 22 pages/cpu s49304 r0 d40808 u131072 pcpu-alloc: s49304 r0 d40808 u131072 alloc=1*1048576 pcpu-alloc: [0] 0 1 2 3 4 5 6 7 Built 1 zonelists, mobility grouping on. Total pages: 1034239 Kernel command line: console=ttyS0,115200 root=/dev/ram0 releasefile=linuxbox_ppc64_e6500mc-tb233.rel bootversion=6.2.7 loglevel=8 mtdoops.mtddev=errlog mtdparts=fff800000.flash:4088M(user),8M(errlog) earlyprintk=ttyS0,115200 real_init= /bin/sh securitylevel=1 reladdr=0x1000000,1522523 printk: log_buf_len individual max cpu contribution: 4096 bytes printk: log_buf_len total cpu_extra contributions: 28672 bytes printk: log_buf_len min size: 16384 bytes printk: log_buf_len: 65536 bytes printk: early log buf free: 12412(75%) Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) Memory: 3979284K/4194304K available (8704K kernel code, 1584K rwdata, 2496K rodata, 472K init, 299K bss, 215020K reserved, 0K cma-reserved) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1 rcu: Preemptible hierarchical RCU implementation. rcu: RCU event tracing is enabled. Tasks RCU enabled. rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. NR_IRQS: 512, nr_irqs: 512, preallocated irqs: 16 mpic: Setting up MPIC " OpenPIC " version 1.2 at ffe040000, max 8 CPUs mpic: ISU size: 512, shift: 9, mask: 1ff mpic: Initializing for 512 sources time_init: decrementer frequency = 37.500000 MHz time_init: processor frequency = 1500.000000 MHz clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x8a60dd6a9, max_idle_ns: 440795204056 ns clocksource: timebase mult[1aaaaaab] shift[24] registered clockevent: decrementer mult[999999a] shift[32] cpu[0] pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 8192 (order: 4, 65536 bytes) Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes) e6500 family performance monitor hardware support registered rcu: Hierarchical SRCU implementation. smp: Bringing up secondary CPUs ...