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Date:      Sat, 17 Mar 2018 23:36:35 +0000
From:      Michael Tuexen <tuexen@freebsd.org>
To:        Andrew Turner <andrew@fubar.geek.nz>
Cc:        freebsd-arm <freebsd-arm@freebsd.org>
Subject:   Re: arm64 panics on boot on a RPi3
Message-ID:  <656FA611-2F31-4B5A-85AC-EF1F18756BBB@freebsd.org>
In-Reply-To: <AE5CA729-3026-4649-9651-B3A2A64AF9B3@fubar.geek.nz>
References:  <7D7EAF74-95E3-4B48-BC57-C3CE4D13501B@freebsd.org> <AE5CA729-3026-4649-9651-B3A2A64AF9B3@fubar.geek.nz>

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> On 17. Mar 2018, at 12:02, Andrew Turner <andrew@fubar.geek.nz> wrote:
>=20
> You need to update loader.efi. A recent change to the kernel means we =
can now enable the EFI runtime services when booting from U-Boot. There =
is however an issue where if you try to read the time before calling =
SetVirtualAddressMap it will try to call into a function out side of the =
runtime map. As this isn=E2=80=99t a valid address we don=E2=80=99t =
include it in the memory map so you get the panic below.
Hi Andrew,

updating loader.efi fixed the problem. Thank you very much!

Best regards
Michael
>=20
> It doesn=E2=80=99t seem to be an issue on UEFI implementations derived =
from EDK2.
>=20
> Andrew
>=20
>> On 17 Mar 2018, at 10:20, Michael Tuexen <tuexen@freebsd.org> wrote:
>>=20
>> Dear all,
>>=20
>> FreeBSD head of today panics when booting the arm64 code on a RPi3:
>>=20
>>>> FreeBSD EFI boot block
>>  Loader path: /boot/loader.efi
>>=20
>>  Initializing modules: UFS
>>  Probing 3 block devices.....* done
>>   UFS found 1 partition
>> Consoles: EFI console =20
>> Command line arguments: loader.efi
>> Image base: 0x39ab8008
>> EFI version: 2.05
>> EFI Firmware: Das U-boot (rev 0.00)
>>=20
>> FreeBSD/arm64 EFI loader, Revision 1.1
>> (Wed Dec  6 19:13:14 CET 2017 root@bsd18.fh-muenster.de)
>> EFI boot environment
>> Loading /boot/defaults/loader.conf
>> /boot/kernel/kernel text=3D0x8482a0 data=3D0x137018+0x71f83c =
syms=3D[0x8+0x1148a0+0x8+0x106675]
>> /boot/entropy size=3D0x1000
>> /boot/kernel/geom_label.ko text=3D0x2b40 text=3D0x2610 =
data=3D0x10120+0xfee4 syms=3D[0x8+0x15a8+0x8+0xf73]
>>=20
>> Hit [Enter] to boot immediately, or any other key for command prompt.
>> Booting [/boot/kernel/kernel]...              =20
>> Using DTB provided by EFI at 0x8004000.
>> KDB: debugger backends: ddb
>> KDB: current backend: ddb
>> Copyright (c) 1992-2018 The FreeBSD Project.
>> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, =
1994
>> 	The Regents of the University of California. All rights =
reserved.
>> FreeBSD is a registered trademark of The FreeBSD Foundation.
>> FreeBSD 12.0-CURRENT #65 r331093: Sat Mar 17 11:05:06 CET 2018
>>   =
tuexen@bsd10.fh-muenster.de:/usr/home/tuexen/head/sys/arm64/compile/TCP =
arm64
>> FreeBSD clang version 5.0.1 (branches/release_50 319231) (based on =
LLVM 5.0.1)
>> VT: init without driver.
>> sysctl_warn_reuse: can't re-use a leaf (kern.features.geom_label)!
>> module_register: cannot register g_label from kernel; already loaded =
from geom_label.ko
>> Module g_label failed to register: 17
>> Starting CPU 1 (1)
>> Starting CPU 2 (2)
>> Starting CPU 3 (3)
>> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
>> random: unblocking device.
>> MAP 39b1b000 mode 2 pages 1
>> MAP 3af86000 mode 2 pages 2
>> MAP 3f100000 mode 1 pages 1
>> random: entropy device external interface
>> kbd0 at kbdmux0
>> ofwbus0: <Open Firmware Device Tree>
>> simplebus0: <Flattened device tree simple bus> on ofwbus0
>> ofw_clkbus0: <OFW clocks bus> on ofwbus0
>> clk_fixed0: <Fixed clock> on ofw_clkbus0
>> clk_fixed1: <Fixed clock> on ofw_clkbus0
>> regfix0: <Fixed Regulator> on ofwbus0
>> regfix1: <Fixed Regulator> on ofwbus0
>> psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
>> local_intc0: <BCM2836 Interrupt Controller> mem 0x40000000-0x400000ff =
on simplebus0
>> intc0: <BCM2835 Interrupt Controller> mem 0x7e00b200-0x7e00b3ff irq =
16 on simplebus0
>> generic_timer0: <ARMv7 Generic Timer> irq 47,48,49,50 on simplebus0
>> Timecounter "ARM MPCore Timecounter" frequency 19200000 Hz quality =
1000
>> Event timer "ARM MPCore Eventtimer" frequency 19200000 Hz quality =
1000
>> x0: ffff0000000109e0
>> x1: ffff0000000109b0
>> x2:                4
>> x3: ffff00000043e638
>> x4: ffff00000076eb28
>> x5:              110
>> x6: ffff000000010808
>> x7: ffff000000010638
>> x8:         3af61fd0
>> x9:                0
>> x10: ffff000000993f20
>> x11:                0
>> x12: ffff0000003b3ab4
>> x13: ffff00000043e2f0
>> x14:                a
>> x15:                0
>> x16:                7
>> x17: ffff00000043e2f0
>> x18: ffff0000000109b0
>> x19: ffff0000000109e0
>> x20: ffff000000993000
>> x21: ffff000000b89000
>> x22: fffffd00012d9070
>> x23:                0
>> x24: fffffd00011c1d00
>> x25: fffffd00011c1c80
>> x26: fffffd00011c1cd8
>> x27:                0
>> x28: fffffd00011d0080
>> x29: ffff0000000109d0
>> sp: ffff0000000109b0
>> lr: ffff0000000fee88
>> elr:         3af61fd0
>> spsr:         a00001c5
>> far:         3af61fd0
>> esr:         86000007
>> panic: data abort in critical section or under mutex
>> cpuid =3D 0
>> time =3D 1
>> KDB: stack backtrace:
>> db_trace_self() at db_trace_self_wrapper+0x28
>> 	 pc =3D 0xffff00000066ead0  lr =3D 0xffff0000000ba870
>> 	 sp =3D 0xffff0000000103a0  fp =3D 0xffff0000000105b0
>>=20
>> db_trace_self_wrapper() at vpanic+0x19c
>> 	 pc =3D 0xffff0000000ba870  lr =3D 0xffff000000362fb0
>> 	 sp =3D 0xffff0000000105c0  fp =3D 0xffff000000010670
>>=20
>> vpanic() at panic+0x44
>> 	 pc =3D 0xffff000000362fb0  lr =3D 0xffff000000362e10
>> 	 sp =3D 0xffff000000010680  fp =3D 0xffff000000010700
>>=20
>> panic() at data_abort+0x21c
>> 	 pc =3D 0xffff000000362e10  lr =3D 0xffff0000006868b8
>> 	 sp =3D 0xffff000000010710  fp =3D 0xffff0000000107c0
>>=20
>> data_abort() at do_el1h_sync+0x11c
>> 	 pc =3D 0xffff0000006868b8  lr =3D 0xffff000000686598
>> 	 sp =3D 0xffff0000000107d0  fp =3D 0xffff000000010800
>>=20
>> do_el1h_sync() at handle_el1h_sync+0x74
>> 	 pc =3D 0xffff000000686598  lr =3D 0xffff000000671074
>> 	 sp =3D 0xffff000000010810  fp =3D 0xffff000000010920
>>=20
>> handle_el1h_sync() at efi_get_time+0x38
>> 	 pc =3D 0xffff000000671074  lr =3D 0xffff0000000fee84
>> 	 sp =3D 0xffff000000010930  fp =3D 0xffff0000000109d0
>>=20
>> efi_get_time() at efirtc_probe+0x18
>> 	 pc =3D 0xffff0000000fee84  lr =3D 0xffff0000000ff5b8
>> 	 sp =3D 0xffff0000000109e0  fp =3D 0xffff000000010a00
>>=20
>> efirtc_probe() at device_probe_child+0x150
>> 	 pc =3D 0xffff0000000ff5b8  lr =3D 0xffff000000397c1c
>> 	 sp =3D 0xffff000000010a10  fp =3D 0xffff000000010a70
>>=20
>> device_probe_child() at device_probe+0x88
>> 	 pc =3D 0xffff000000397c1c  lr =3D 0xffff0000003988ac
>> 	 sp =3D 0xffff000000010a80  fp =3D 0xffff000000010aa0
>>=20
>> device_probe() at bus_generic_new_pass+0xec
>> 	 pc =3D 0xffff0000003988ac  lr =3D 0xffff00000039a78c
>> 	 sp =3D 0xffff000000010ab0  fp =3D 0xffff000000010ae0
>>=20
>> bus_generic_new_pass() at bus_generic_new_pass+0xd0
>> 	 pc =3D 0xffff00000039a78c  lr =3D 0xffff00000039a770
>> 	 sp =3D 0xffff000000010af0  fp =3D 0xffff000000010b20
>>=20
>> bus_generic_new_pass() at root_bus_configure+0x78
>> 	 pc =3D 0xffff00000039a770  lr =3D 0xffff00000039c700
>> 	 sp =3D 0xffff000000010b30  fp =3D 0xffff000000010b60
>>=20
>> root_bus_configure() at mi_startup+0xc8
>> 	 pc =3D 0xffff00000039c700  lr =3D 0xffff0000002fbbcc
>> 	 sp =3D 0xffff000000010b70  fp =3D 0xffff000000010bb0
>>=20
>> mi_startup() at virtdone+0x54
>> 	 pc =3D 0xffff0000002fbbcc  lr =3D 0xffff000000001084
>> 	 sp =3D 0xffff000000010bc0  fp =3D 0x0000000000000000
>>=20
>> KDB: enter: panic
>> [ thread pid 0 tid 100000 ]
>> Stopped at      0x3af61fd0:KDB: reentering
>> KDB: stack backtrace:
>>    db_trace_self() at db_trace_self_wrapper+0x28
>>        pc =3D 0xffff00000066ead0  lr =3D 0xffff0000000ba870
>>        sp =3D 0xffff00000000f990  fp =3D 0xffff00000000fba0
>>=20
>> db_trace_self_wrapper() at kdb_reenter+0x38
>>        pc =3D 0xffff0000000ba870  lr =3D 0xffff0000003a778c
>>        sp =3D 0xffff00000000fbb0  fp =3D 0xffff00000000fbc0
>>=20
>> kdb_reenter() at do_el1h_sync+0x11c
>>        pc =3D 0xffff0000003a778c  lr =3D 0xffff000000686598
>>        sp =3D 0xffff00000000fbd0  fp =3D 0xffff00000000fc00
>>=20
>> do_el1h_sync() at handle_el1h_sync+0x74
>>        pc =3D 0xffff000000686598  lr =3D 0xffff000000671074
>>        sp =3D 0xffff00000000fc10  fp =3D 0xffff00000000fd20
>>=20
>> handle_el1h_sync() at db_read_bytes+0x34
>>        pc =3D 0xffff000000671074  lr =3D 0xffff00000066e878
>>        sp =3D 0xffff00000000fd30  fp =3D 0xffff00000000ffe0
>>=20
>> db_read_bytes() at db_get_value+0x38
>>        pc =3D 0xffff00000066e878  lr =3D 0xffff0000000b69fc
>>        sp =3D 0xffff00000000fff0  fp =3D 0xffff000000010020
>>=20
>> db_get_value() at db_disasm_read_word+0x10
>>        pc =3D 0xffff0000000b69fc  lr =3D 0xffff00000066e7f4
>>        sp =3D 0xffff000000010030  fp =3D 0xffff000000010030
>>=20
>> db_disasm_read_word() at disasm+0x40
>>        pc =3D 0xffff00000066e7f4  lr =3D 0xffff00000066f6a0
>>        sp =3D 0xffff000000010040  fp =3D 0xffff0000000100a0
>>=20
>> disasm() at db_print_loc_and_inst+0x40
>>        pc =3D 0xffff00000066f6a0  lr =3D 0xffff0000000b8adc
>>        sp =3D 0xffff0000000100b0  fp =3D 0xffff0000000100c0
>>=20
>> db_print_loc_and_inst() at db_trap+0xd4
>>        pc =3D 0xffff0000000b8adc  lr =3D 0xffff0000000ba9b8
>>        sp =3D 0xffff0000000100d0  fp =3D 0xffff0000000102f0
>>=20
>> db_trap() at kdb_trap+0x1c8
>>        pc =3D 0xffff0000000ba9b8  lr =3D 0xffff0000003a7bdc
>>        sp =3D 0xffff000000010300  fp =3D 0xffff0000000103b0
>>=20
>> kdb_trap() at do_el1h_sync+0xf0
>>        pc =3D 0xffff0000003a7bdc  lr =3D 0xffff00000068656c
>>        sp =3D 0xffff0000000103c0  fp =3D 0xffff0000000103f0
>>=20
>> do_el1h_sync() at handle_el1h_sync+0x74
>>        pc =3D 0xffff00000068656c  lr =3D 0xffff000000671074
>>        sp =3D 0xffff000000010400  fp =3D 0xffff000000010510
>>=20
>> handle_el1h_sync() at kdb_enter+0x34
>>        pc =3D 0xffff000000671074  lr =3D 0xffff0000003a7280
>>        sp =3D 0xffff000000010520  fp =3D 0xffff0000000105b0
>>=20
>> kdb_enter() at vpanic+0x1b8
>>        pc =3D 0xffff0000003a7280  lr =3D 0xffff000000362fcc
>>        sp =3D 0xffff0000000105c0  fp =3D 0xffff000000010670
>>=20
>> vpanic() at panic+0x44
>>        pc =3D 0xffff000000362fcc  lr =3D 0xffff000000362e10
>>        sp =3D 0xffff000000010680  fp =3D 0xffff000000010700
>>=20
>> panic() at data_abort+0x21c
>>        pc =3D 0xffff000000362e10  lr =3D 0xffff0000006868b8
>>        sp =3D 0xffff000000010710  fp =3D 0xffff0000000107c0
>>=20
>> data_abort() at do_el1h_sync+0x11c
>>        pc =3D 0xffff0000006868b8  lr =3D 0xffff000000686598
>>        sp =3D 0xffff0000000107d0  fp =3D 0xffff000000010800
>>=20
>> do_el1h_sync() at handle_el1h_sync+0x74
>>        pc =3D 0xffff000000686598  lr =3D 0xffff000000671074
>>        sp =3D 0xffff000000010810  fp =3D 0xffff000000010920
>>=20
>> handle_el1h_sync() at efi_get_time+0x38
>>        pc =3D 0xffff000000671074  lr =3D 0xffff0000000fee84
>>        sp =3D 0xffff000000010930  fp =3D 0xffff0000000109d0
>>=20
>> efi_get_time() at efirtc_probe+0x18
>>        pc =3D 0xffff0000000fee84  lr =3D 0xffff0000000ff5b8
>>        sp =3D 0xffff0000000109e0  fp =3D 0xffff000000010a00
>>=20
>> efirtc_probe() at device_probe_child+0x150
>>        pc =3D 0xffff0000000ff5b8  lr =3D 0xffff000000397c1c
>>        sp =3D 0xffff000000010a10  fp =3D 0xffff000000010a70
>>=20
>> device_probe_child() at device_probe+0x88
>>        pc =3D 0xffff000000397c1c  lr =3D 0xffff0000003988ac
>>        sp =3D 0xffff000000010a80  fp =3D 0xffff000000010aa0
>>=20
>> device_probe() at bus_generic_new_pass+0xec
>>        pc =3D 0xffff0000003988ac  lr =3D 0xffff00000039a78c
>>        sp =3D 0xffff000000010ab0  fp =3D 0xffff000000010ae0
>>=20
>> bus_generic_new_pass() at bus_generic_new_pass+0xd0
>>        pc =3D 0xffff00000039a78c  lr =3D 0xffff00000039a770
>>        sp =3D 0xffff000000010af0  fp =3D 0xffff000000010b20
>>=20
>> bus_generic_new_pass() at root_bus_configure+0x78
>>        pc =3D 0xffff00000039a770  lr =3D 0xffff00000039c700
>>        sp =3D 0xffff000000010b30  fp =3D 0xffff000000010b60
>>=20
>> root_bus_configure() at mi_startup+0xc8
>>        pc =3D 0xffff00000039c700  lr =3D 0xffff0000002fbbcc
>>        sp =3D 0xffff000000010b70  fp =3D 0xffff000000010bb0
>>=20
>> mi_startup() at virtdone+0x54
>>        pc =3D 0xffff0000002fbbcc  lr =3D 0xffff000000001084
>>        sp =3D 0xffff000000010bc0  fp =3D 0x0000000000000000
>>=20
>> *** error reading from address 3af61fd0 ***
>> KDB: reentering
>> KDB: stack backtrace:
>> db_trace_self() at db_trace_self_wrapper+0x28
>>        pc =3D 0xffff00000066ead0  lr =3D 0xffff0000000ba870
>>        sp =3D 0xffff00000000fdb0  fp =3D 0xffff00000000ffc0
>>=20
>> db_trace_self_wrapper() at kdb_reenter+0x38
>>        pc =3D 0xffff0000000ba870  lr =3D 0xffff0000003a778c
>>        sp =3D 0xffff00000000ffd0  fp =3D 0xffff00000000ffe0
>>=20
>> kdb_reenter() at db_get_value+0x50
>>        pc =3D 0xffff0000003a778c  lr =3D 0xffff0000000b6a14
>>        sp =3D 0xffff00000000fff0  fp =3D 0xffff000000010020
>>=20
>> db_get_value() at db_disasm_read_word+0x10
>>        pc =3D 0xffff0000000b6a14  lr =3D 0xffff00000066e7f4
>>        sp =3D 0xffff000000010030  fp =3D 0xffff000000010030
>>=20
>> db_disasm_read_word() at disasm+0x40
>>        pc =3D 0xffff00000066e7f4  lr =3D 0xffff00000066f6a0
>>        sp =3D 0xffff000000010040  fp =3D 0xffff0000000100a0
>>=20
>> disasm() at db_print_loc_and_inst+0x40
>>        pc =3D 0xffff00000066f6a0  lr =3D 0xffff0000000b8adc
>>        sp =3D 0xffff0000000100b0  fp =3D 0xffff0000000100c0
>>=20
>> db_print_loc_and_inst() at db_trap+0xd4
>>        pc =3D 0xffff0000000b8adc  lr =3D 0xffff0000000ba9b8
>>        sp =3D 0xffff0000000100d0  fp =3D 0xffff0000000102f0
>>=20
>> db_trap() at kdb_trap+0x1c8
>>        pc =3D 0xffff0000000ba9b8  lr =3D 0xffff0000003a7bdc
>>        sp =3D 0xffff000000010300  fp =3D 0xffff0000000103b0
>>=20
>> kdb_trap() at do_el1h_sync+0xf0
>>        pc =3D 0xffff0000003a7bdc  lr =3D 0xffff00000068656c
>>        sp =3D 0xffff0000000103c0  fp =3D 0xffff0000000103f0
>>=20
>> do_el1h_sync() at handle_el1h_sync+0x74
>>        pc =3D 0xffff00000068656c  lr =3D 0xffff000000671074
>>        sp =3D 0xffff000000010400  fp =3D 0xffff000000010510
>>=20
>> handle_el1h_sync() at kdb_enter+0x34
>>        pc =3D 0xffff000000671074  lr =3D 0xffff0000003a7280
>>        sp =3D 0xffff000000010520  fp =3D 0xffff0000000105b0
>>=20
>> kdb_enter() at vpanic+0x1b8
>>        pc =3D 0xffff0000003a7280  lr =3D 0xffff000000362fcc
>>        sp =3D 0xffff0000000105c0  fp =3D 0xffff000000010670
>>=20
>> vpanic() at panic+0x44
>>        pc =3D 0xffff000000362fcc  lr =3D 0xffff000000362e10
>>        sp =3D 0xffff000000010680  fp =3D 0xffff000000010700
>>=20
>> panic() at data_abort+0x21c
>>        pc =3D 0xffff000000362e10  lr =3D 0xffff0000006868b8
>>        sp =3D 0xffff000000010710  fp =3D 0xffff0000000107c0
>>=20
>> data_abort() at do_el1h_sync+0x11c
>>        pc =3D 0xffff0000006868b8  lr =3D 0xffff000000686598
>>        sp =3D 0xffff0000000107d0  fp =3D 0xffff000000010800
>>=20
>> do_el1h_sync() at handle_el1h_sync+0x74
>>        pc =3D 0xffff000000686598  lr =3D 0xffff000000671074
>>        sp =3D 0xffff000000010810  fp =3D 0xffff000000010920
>>=20
>> handle_el1h_sync() at efi_get_time+0x38
>>        pc =3D 0xffff000000671074  lr =3D 0xffff0000000fee84
>>        sp =3D 0xffff000000010930  fp =3D 0xffff0000000109d0
>>=20
>> efi_get_time() at efirtc_probe+0x18
>>        pc =3D 0xffff0000000fee84  lr =3D 0xffff0000000ff5b8
>>        sp =3D 0xffff0000000109e0  fp =3D 0xffff000000010a00
>>=20
>> efirtc_probe() at device_probe_child+0x150
>>        pc =3D 0xffff0000000ff5b8  lr =3D 0xffff000000397c1c
>>        sp =3D 0xffff000000010a10  fp =3D 0xffff000000010a70
>>=20
>> device_probe_child() at device_probe+0x88
>>        pc =3D 0xffff000000397c1c  lr =3D 0xffff0000003988ac
>>        sp =3D 0xffff000000010a80  fp =3D 0xffff000000010aa0
>>=20
>> device_probe() at bus_generic_new_pass+0xec
>>        pc =3D 0xffff0000003988ac  lr =3D 0xffff00000039a78c
>>        sp =3D 0xffff000000010ab0  fp =3D 0xffff000000010ae0
>>=20
>> bus_generic_new_pass() at bus_generic_new_pass+0xd0
>>        pc =3D 0xffff00000039a78c  lr =3D 0xffff00000039a770
>>        sp =3D 0xffff000000010af0  fp =3D 0xffff000000010b20
>>=20
>> bus_generic_new_pass() at root_bus_configure+0x78
>>        pc =3D 0xffff00000039a770  lr =3D 0xffff00000039c700
>>        sp =3D 0xffff000000010b30  fp =3D 0xffff000000010b60
>>=20
>> root_bus_configure() at mi_startup+0xc8
>>        pc =3D 0xffff00000039c700  lr =3D 0xffff0000002fbbcc
>>        sp =3D 0xffff000000010b70  fp =3D 0xffff000000010bb0
>>=20
>> mi_startup() at virtdone+0x54
>>        pc =3D 0xffff0000002fbbcc  lr =3D 0xffff000000001084
>>        sp =3D 0xffff000000010bc0  fp =3D 0x0000000000000000
>>=20
>> db>=20
>>=20
>> Any idea what goes wrong?
>>=20
>> Best regards
>> Michael
>> _______________________________________________
>> freebsd-arm@freebsd.org mailing list
>> https://lists.freebsd.org/mailman/listinfo/freebsd-arm
>> To unsubscribe, send any mail to =
"freebsd-arm-unsubscribe@freebsd.org"
>>=20
>=20




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