From nobody Mon Aug 23 13:07:34 2021
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Subject: Raspberry Pi 4 panics when using /dev/led/led1
Message-Id: <DD9CFF21-A666-4EE5-8369-E63A1D77927B@exmandato.se>
Date: Mon, 23 Aug 2021 15:07:34 +0200
To: freebsd-arm@freebsd.org
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Reply-To: mats@exmandato.se
From: Mats Mellstrand via freebsd-arm <freebsd-arm@freebsd.org>
X-Original-From: Mats Mellstrand <mats@exmandato.se>
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Raspberry Pi 4
8 Gbyte
Booting from USB stick

Latest snapshot

FreeBSD XX 14.0-CURRENT FreeBSD 14.0-CURRENT #0 =
main-n248803-eba8e643b19: Thu Aug 19 10:08:23 UTC 2021     =
root@releng1.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC  =
arm64

Booting works fine.

# morse -l =E2=80=9CSOS=E2=80=9D > /dev/led/led0

works as expected.

But when I try:

# morse -l "SOS" > /dev/led/led1
# lock order reversal: (sleepable after non-sleepable)
 1st 0xffff000000c31c58 LED mtx (LED mtx, sleep mutex) @ =
/usr/src/sys/kern/kern_mutex.c:211
 2nd 0xffffa00000ffec10 Raspberry Pi firmware gpio (Raspberry Pi =
firmware gpio, sx) @ =
/usr/src/sys/arm/broadcom/bcm2835/raspberrypi_gpio.c:252
lock order LED mtx -> Raspberry Pi firmware gpio attempted at:
#0 0xffff0000004e1b58 at witness_checkorder+0xc0c
#1 0xffff00000047e348 at _sx_xlock+0x7c
#2 0xffff0000007edc60 at rpi_fw_gpio_pin_set+0xe8
#3 0xffff0000001e998c at led_timeout+0xe8
#4 0xffff000000491368 at softclock_call_cc+0x13c
#5 0xffff000000491674 at softclock+0x44
#6 0xffff000000430e64 at ithread_loop+0x2a8
#7 0xffff00000042d724 at fork_exit+0x74
#8 0xffff0000007774cc at fork_trampoline+0x14
panic: malloc(M_WAITOK) with sleeping prohibited
cpuid =3D 0
time =3D 1629719529
KDB: stack backtrace:
db_trace_self() at db_trace_self
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
vpanic() at vpanic+0x184
panic() at panic+0x44
malloc_dbg() at malloc_dbg+0xf8
malloc() at malloc+0x2c
bcm2835_firmware_property() at bcm2835_firmware_property+0x44
rpi_fw_gpio_pin_set() at rpi_fw_gpio_pin_set+0x100
led_timeout() at led_timeout+0xe8
softclock_call_cc() at softclock_call_cc+0x13c
softclock() at softclock+0x44
ithread_loop() at ithread_loop+0x2a8
fork_exit() at fork_exit+0x74
fork_trampoline() at fork_trampoline+0x14
KDB: enter: panic
[ thread pid 12 tid 100028 ]
Stopped at      kdb_enter+0x44: undefined       f905011f
db>

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From nobody Tue Aug 24 05:51:12 2021
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From: bugzilla-noreply@freebsd.org
To: freebsd-arm@FreeBSD.org
Subject: [Bug 258019] Raspberry Pi 4 panics when using /dev/led/led1
Date: Tue, 24 Aug 2021 05:51:12 +0000
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X-Bugzilla-Component: arm
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258019

            Bug ID: 258019
           Summary: Raspberry Pi 4 panics when using /dev/led/led1
           Product: Base System
           Version: CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: arm
          Assignee: freebsd-arm@FreeBSD.org
          Reporter: mats@exmandato.se

Raspberry Pi 4
8 Gbyte
Booting from USB stick
Running latest snapshot

FreeBSD localhost 14.0-CURRENT FreeBSD 14.0-CURRENT #0
main-n248803-eba8e643b19: Thu Aug 19 10:08:23 UTC 2021=20=20=20=20
root@releng1.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC  ar=
m64

Booting works fine.

# morse -l =E2=80=9CSOS=E2=80=9D > /dev/led/led0

works as expected.

But when I try:

# morse -l "SOS" > /dev/led/led1
# lock order reversal: (sleepable after non-sleepable)
1st 0xffff000000c31c58 LED mtx (LED mtx, sleep mutex) @
/usr/src/sys/kern/kern_mutex.c:211
2nd 0xffffa00000ffec10 Raspberry Pi firmware gpio (Raspberry Pi firmware gp=
io,
sx) @ /usr/src/sys/arm/broadcom/bcm2835/raspberrypi_gpio.c:252
lock order LED mtx -> Raspberry Pi firmware gpio attempted at:
#0 0xffff0000004e1b58 at witness_checkorder+0xc0c
#1 0xffff00000047e348 at _sx_xlock+0x7c
#2 0xffff0000007edc60 at rpi_fw_gpio_pin_set+0xe8
#3 0xffff0000001e998c at led_timeout+0xe8
#4 0xffff000000491368 at softclock_call_cc+0x13c
#5 0xffff000000491674 at softclock+0x44
#6 0xffff000000430e64 at ithread_loop+0x2a8
#7 0xffff00000042d724 at fork_exit+0x74
#8 0xffff0000007774cc at fork_trampoline+0x14
panic: malloc(M_WAITOK) with sleeping prohibited
cpuid =3D 0
time =3D 1629719529
KDB: stack backtrace:
db_trace_self() at db_trace_self
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
vpanic() at vpanic+0x184
panic() at panic+0x44
malloc_dbg() at malloc_dbg+0xf8
malloc() at malloc+0x2c
bcm2835_firmware_property() at bcm2835_firmware_property+0x44
rpi_fw_gpio_pin_set() at rpi_fw_gpio_pin_set+0x100
led_timeout() at led_timeout+0xe8
softclock_call_cc() at softclock_call_cc+0x13c
softclock() at softclock+0x44
ithread_loop() at ithread_loop+0x2a8
fork_exit() at fork_exit+0x74
fork_trampoline() at fork_trampoline+0x14
KDB: enter: panic
[ thread pid 12 tid 100028 ]
Stopped at      kdb_enter+0x44: undefined       f905011f
db>

--=20
You are receiving this mail because:
You are the assignee for the bug.=

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Hello,
 

 
I tested 13-RELEASE, 13-STABLE and CURRENT on a Raspberry PI Compute Module 4 and got kernel panic on boot with every version tested.
 

 
There's something wrong with rman and libdevinfo, see attached patch and dmesg.
 

 
Another way to avoid the kernel panic is to add :
 
devmatch_enable="NO"
 
in :
 
/etc/rc.conf
 

 
Kind Regards,
 
Rozie
 

 

 

 
 
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Hi!

I am trying to add support for the new SoC Baikal-M in FreeBSD.
https://www.baikalelectronics.com/products/338/
https://www.cnx-software.com/2021/08/10/desktop-and-all-in-one-arm-linux-computers-launched-with-baikal-m-processor/

The system is already starting in multi-user mode, but only one core out of
eight is detected.
To find out the reason, I slightly changed the code by adding the output of
the error code.
sys/arm64/arm64/mp_machdep.c
-------------------------------------------------------------------------------------------------------------------------
        printf("Starting CPU %u (%lx)\n", cpuid, target_cpu);
        pa = pmap_extract(kernel_pmap, (vm_offset_t)mpentry);
        err = psci_cpu_on(target_cpu, pa, cpuid);

        if (err != PSCI_RETVAL_SUCCESS) {
                printf("Starting CPU %u (%lx) psci_cpu_on return (%d)\n",
cpuid, target_cpu, err);
                /*
                 * Panic here if INVARIANTS are enabled and PSCI failed to
                 * start the requested CPU.  psci_cpu_on() returns
PSCI_MISSING
                 * to indicate we are unable to use it to start the given
CPU.
                 */
                KASSERT(err == PSCI_MISSING ||
                    (mp_quirks & MP_QUIRK_CPULIST) == MP_QUIRK_CPULIST,
                    ("Failed to start CPU %u (%lx), error %d\n",
                    cpuid, target_cpu, err));
                pcpu_destroy(pcpup);
                kmem_free((vm_offset_t)dpcpu[cpuid - 1], DPCPU_SIZE);
                dpcpu[cpuid - 1] = NULL;
                kmem_free((vm_offset_t)bootstacks[cpuid], PAGE_SIZE);
                bootstacks[cpuid] = NULL;
                mp_ncpus--;
                return (false);
        }
--------------------------------------------------------------------------------------------------------------------------
I got the following log
---------------------------------
Starting CPU 1 (1)
Starting psci_cpu_on(1, f22008c8, 1)
Starting CPU 1 (1) psci_cpu_on return (-9)
Starting CPU 1 (100)
Starting psci_cpu_on(100, f22008c8, 1)
Starting CPU 1 (100) psci_cpu_on return (-9)
Starting CPU 1 (101)
......
----------------------------------

This document describes return codes
https://developer.arm.com/documentation/den0022/latest

5.2.2 Return error codes
Table 6 defines the values for error codes used with PSCI functions.
All errors are 32-bit signed integers.

SUCCESS 0
NOT_SUPPORTED             -1
INVALID_PARAMETERS  -2
DENIED                                -3
ALREADY_ON                    -4
ON_PENDING                     -5
INTERNAL_FAILURE        -6
NOT_PRESENT                   -7
DISABLED                           -8
INVALID_ADDRESS          -9

But in kernel sources in the file  sys/dev/psci/psci.h
no definition of INVALID_ADDRESS !!!!!
/*
 * PSCI return codes.
 */
#define PSCI_RETVAL_SUCCESS                       0
#define PSCI_RETVAL_NOT_SUPPORTED       -1
#define PSCI_RETVAL_INVALID_PARAMS      -2
#define PSCI_RETVAL_DENIED                          -3
#define PSCI_RETVAL_ALREADY_ON              -4
#define PSCI_RETVAL_ON_PENDING                -5
#define PSCI_RETVAL_INTERNAL_FAILURE    -6
#define PSCI_RETVAL_NOT_PRESENT               -7
#define PSCI_RETVAL_DISABLED                       -8

That is, no one expected the return code -9 to appear.
What do you think is the reason for this error?
Maybe someone has already encountered this behavior psci_cpu_on ?

The DT files say the following.

 	psci {

		compatible = "arm,psci-1.0", "arm,psci-0.2";
		method = "smc";
	};

Full DT files can be viewed here https://personalbsd.org/download/baikal/dts/

The complete system startup log can be viewed here.
https://dmesgd.nycbug.org/index.cgi?do=view&id=6236

---
Sergey Tyuryukanov.

--000000000000ec35cd05ca5e2729--

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Subject: Re: FreeBSD-13.0-CURRENT on Baikal-m(aarch64) SoC
From: Andrew Turner <andrew@fubar.geek.nz>
In-Reply-To: <CAHa8N890iPFJsSuRRQU-aOcC2qBbcwE7QGk38fP2EVkDuwpDyA@mail.gmail.com>
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> On 25 Aug 2021, at 09:34, Sleep Walker <s199p.wa1k9r@gmail.com> wrote:
>=20
> Hi!
>=20
> I am trying to add support for the new SoC Baikal-M in FreeBSD.
> https://www.baikalelectronics.com/products/338/
> =
https://www.cnx-software.com/2021/08/10/desktop-and-all-in-one-arm-linux-c=
omputers-launched-with-baikal-m-processor/
>=20
> The system is already starting in multi-user mode, but only one core =
out of
> eight is detected.
> To find out the reason, I slightly changed the code by adding the =
output of
> the error code.
> sys/arm64/arm64/mp_machdep.c
> =
--------------------------------------------------------------------------=
-----------------------------------------------
>        printf("Starting CPU %u (%lx)\n", cpuid, target_cpu);
>        pa =3D pmap_extract(kernel_pmap, (vm_offset_t)mpentry);
>        err =3D psci_cpu_on(target_cpu, pa, cpuid);
>=20
>        if (err !=3D PSCI_RETVAL_SUCCESS) {
>                printf("Starting CPU %u (%lx) psci_cpu_on return =
(%d)\n",
> cpuid, target_cpu, err);
>                /*
>                 * Panic here if INVARIANTS are enabled and PSCI failed =
to
>                 * start the requested CPU.  psci_cpu_on() returns
> PSCI_MISSING
>                 * to indicate we are unable to use it to start the =
given
> CPU.
>                 */
>                KASSERT(err =3D=3D PSCI_MISSING ||
>                    (mp_quirks & MP_QUIRK_CPULIST) =3D=3D =
MP_QUIRK_CPULIST,
>                    ("Failed to start CPU %u (%lx), error %d\n",
>                    cpuid, target_cpu, err));
>                pcpu_destroy(pcpup);
>                kmem_free((vm_offset_t)dpcpu[cpuid - 1], DPCPU_SIZE);
>                dpcpu[cpuid - 1] =3D NULL;
>                kmem_free((vm_offset_t)bootstacks[cpuid], PAGE_SIZE);
>                bootstacks[cpuid] =3D NULL;
>                mp_ncpus--;
>                return (false);
>        }
> =
--------------------------------------------------------------------------=
------------------------------------------------
> I got the following log
> ---------------------------------
> Starting CPU 1 (1)
> Starting psci_cpu_on(1, f22008c8, 1)
> Starting CPU 1 (1) psci_cpu_on return (-9)
> Starting CPU 1 (100)
> Starting psci_cpu_on(100, f22008c8, 1)
> Starting CPU 1 (100) psci_cpu_on return (-9)
> Starting CPU 1 (101)
> ......
> ----------------------------------

The firmware thinks this address is invalid. =46rom the version of the =
Trusted Firmware-A I found it checks if the address is within one of the =
three DRAM banks and not within the secure region. These two checks =
should pass. It then tries to read the fdt memory node and check if the =
address is within one of the regions it provides. It can also file if it =
is unable to read this node, or the entry point is not within one of the =
memory regions the node describes.

Are you able to get a dump of the /memory@80000000 node from the =
firmware? e.g. from loader.efi the following commands should work =
(assuming it=E2=80=99s passed into loader by the firmware):

fdt cd /memory@80000000
fdt prop

Andrew


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To view an individual PR, use:
  https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=(Bug Id).

The following is a listing of current problems submitted by FreeBSD users,
which need special attention. These represent problem reports covering
all versions including experimental development code and obsolete releases.

Status      |    Bug Id | Description
------------+-----------+---------------------------------------------------
Open        |    238576 | Raspberry Pi 3B+ "shutdown -p" does not shut off  
Open        |    239673 | Spurious Interrupt message from /dev/led/led1     
Open        |    257670 | mpr(4): SAS3008 PCI-Express Fusion-MPT SAS-3: Fat 

3 problems total for which you should take action.

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