On 15/06/17 20:36, Guenter Roeck wrote: > Oopsie :-) > > Building sparc64:sun4u:TI UltraSparc IIi:smp:sparc64_defconfig ... running ..... passed > Building sparc64:sun4v:TI UltraSparc IIe:smp:sparc64_defconfig ... running ............................ failed (timeout) > ------------ > qemu log: > OpenBIOS for Sparc64 > Configuration device id QEMU version 1 machine id 64 > kernel addr 404000 size 101dd2c > kernel cmdline root=/dev/vda init=/sbin/init.sh console=ttyS0 doreboot > CPUs: 1 x SUNW,UltraSPARC-IIe > UUID: 00000000-0000-0000-0000-000000000000 > Welcome to OpenBIOS v1.1 built on Nov 24 2016 21:23 > Type 'help' for detailed information > [sparc64] Kernel already loaded > > Unhandled Exception 0x0000000000000028 > PC = 0x0000000000462234 NPC = 0x0000000000462238 > Stopping execution > qemu-system-sparc64: terminating on signal 15 from pid 14226 (/bin/bash) > ------------ > Building sparc64:sun4v:Fujitsu Sparc64 IV:smp:sparc64_defconfig ... running ..... passed > > Trying with v4.12-rc4 gives me a different crash for UltraSparc IIe: > > [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1 > [ 0.000000] \|/ ____ \|/ > [ 0.000000] "@'/ .. \`@" > [ 0.000000] /_| \__/ |_\ > [ 0.000000] \__U_/ > [ 0.000000] swapper/0(0): TL0: Kernel divide by zero. [#1] > [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.12.0-rc4+ #1 > [ 0.000000] task: 0000000000ae3e80 task.stack: 0000000000ad4000 > [ 0.000000] TSTATE: 0000008880e01607 TPC: 0000000000b5d8a4 TNPC: 0000000000b5d8a8 Y: 00000000 Not tainted > [ 0.000000] TPC: <time_init+0xf4/0x1b8> > [ 0.000000] g0: 0000000000b4cf50 g1: 0000000000000000 g2: 000000ee6b280000 g3: 0000000000000000 > [ 0.000000] g4: 0000000000ae3e80 g5: fffff8001ec5c000 g6: 0000000000ad4000 g7: 00000000ffffffff > [ 0.000000] o0: 0000000000000000 o1: 0000000000a3c1f0 o2: 0000000000000000 o3: 0000000000000000 > [ 0.000000] o4: 0000000200000000 o5: 0000000000000001 sp: 0000000000ad75c1 ret_pc: 0000000000b5d824 > [ 0.000000] RPC: <time_init+0x74/0x1b8> > [ 0.000000] l0: 0000000077359400 l1: 0000000000bb8c00 l2: 0000000000baf940 l3: 0000000000bb2100 > [ 0.000000] l4: 0000000000bb8c00 l5: 0000000000adec00 l6: 0000000000bb2100 l7: 0000000000983898 > [ 0.000000] i0: 0000000000adb400 i1: 0000000000adec00 i2: 0000000000ae5c00 i3: ffffffffffffffff > [ 0.000000] i4: 0000000000000000 i5: 0000000000a3c2b0 i6: 0000000000ad7671 i7: 0000000000b5a8a4 > [ 0.000000] I7: <start_kernel+0x2b0/0x430> > [ 0.000000] Call Trace: > [ 0.000000] [0000000000b5a8a4] start_kernel+0x2b0/0x430 > [ 0.000000] [00000000009777b4] tlb_fixup_done+0x4c/0x58 > [ 0.000000] [00000000ffd0e444] 0xffd0e444 > [ 0.000000] Disabling lock debugging due to kernel taint > [ 0.000000] Caller[0000000000b5a8a4]: start_kernel+0x2b0/0x430 > [ 0.000000] Caller[00000000009777b4]: tlb_fixup_done+0x4c/0x58 > > Still in the timer code, though. Adding some debugging: > > [ 0.000000] ############# spitfire > [ 0.000000] ############# Hummingbird > [ 0.000000] ############# stick-frequency=0 > [ 0.000000] ############## time_init(): freq=0 > > This suggests that the stick-frequency devicetree property isn't there. > Checking the openbios source confirms it. Overall the code does not look > correct, though, since > > freq = of_getintprop_default(dp, "stick-frequency", 0); > > suggests that a frequency of 0 would be acceptable but isn't. Right. I don't see a stick-frequency in a DT from a real Ultra 5, so I presume that this is specific to IIe? > Anyway, adding "stick-frequency" to the properties provided by openbios > fixes this crash both upstream and in your code, only to result in a hang > a bit later. > > [ 0.000000] clocksource: hbtick: mask: 0xffffffffffffffff max_cycles: 0x171024e7e0, max_idle_ns: 440795205315 ns > [ 0.000000] clocksource: mult[a000000] shift[24] > [ 0.000000] clockevent: mult[1999999a] shift[32] > [ 0.000000] Console: colour dummy device 80x25 > > [ hangs here until terminated ] > > Guess that means that qemu doesn't really support this CPU, > and your code is fine. Yeah that is entirely likely. Currently my focus is on getting the basic sun4u machine up-and-running to the point where 64-bit Solaris can boot in -nographic mode, so for the moment the other CPU types tend to be ignored. ATB, Mark. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
