SpacemiT k1: Linux crashes setting up smp with mainline U-Boot
Junhui Liu
junhui.liu at pigmoral.tech
Thu Dec 11 21:40:22 PST 2025
Hi Michael,
On 12/12/25 12:37 PM, Michael Opdenacker wrote:
> Hi Junhui
>
> Thanks a lot for having a look at this issue!
>
> On 12/12/25 02:50, Junhui Liu wrote:
>> Hi Michael,
>>
>> On 12/12/25 4:34 AM, Michael Opdenacker wrote:
>> [...]
>>> [ 0.000000] SBI specification v3.0 detected
>>> [ 0.000000] SBI implementation ID=0x1 Version=0x10007
>>> [ 0.000000] SBI TIME extension detected
>>> [ 0.000000] SBI IPI extension detected
>>> [ 0.000000] SBI RFENCE extension detected
>>> [ 0.000000] SBI DBCN extension detected
>>> [ 0.000000] SBI FWFT extension detected
>>>
>> [...]
>>> syys 0.083956] smp: Bringing upsysysys: sys: 0xss
>>> 1. sys:t:: r y00 xxs01fxdcfe121.0
>>> 210c.
>>>
>>> b0
>>> m:3
>>> j...
>>
>> This might actually not a "crash". Instead, it seems the boot address
>> for
>> CPUs 1-7 hasn't been set correctly, causing them to boot from the
>> BootROM.
>>
>> I believe this is not a U-Boot issue, but rather an OpenSBI one.
>> According
>> to the log, it looks like you are using mainline OpenSBI. Could you
>> please
>> confirm the OpenSBI you are using includes this fix:
>>
>> 126c9d34 ("platform: generic: spacemit: add missing objects.mk")
>
> Yes, I made sure I'm building the latest commit on the "master" branch
> as of today (51fe6a8bc958166ff79805cf69bafe5e297776f4), and that it
> contains the fix you mentioned.
> However, it doesn't fix my issue yet.
>
> Here's the OpenSBI output, which unfortunately doesn't confirm the
> commit:
>
> OpenSBI v1.7
> ____ _____ ____ _____
> / __ \ / ____| _ \_ _|
> | | | |_ __ ___ _ __ | (___ | |_) || |
> | | | | '_ \ / _ \ '_ \ \___ \| _ < | |
> | |__| | |_) | __/ | | |____) | |_) || |_
> \____/| .__/ \___|_| |_|_____/|____/_____|
> | |
> |_|
>
> Platform Name : Banana Pi BPI-F3
> Platform Features : medeleg
> Platform HART Count : 8
> Platform IPI Device : aclint-mswi
> Platform Timer Device : aclint-mtimer @ 24000000Hz
> Platform Console Device : uart8250
> Platform HSM Device : ---
> Platform PMU Device : ---
> Platform Reboot Device : ---
> Platform Shutdown Device : ---
> Platform Suspend Device : ---
> Platform CPPC Device : ---
> Firmware Base : 0x0
> Firmware Size : 403 KB
> Firmware RW Offset : 0x40000
> Firmware RW Size : 147 KB
> Firmware Heap Offset : 0x54000
> Firmware Heap Size : 67 KB (total), 4 KB (reserved), 12 KB
> (used), 50 KB (free)
> Firmware Scratch Size : 4096 B (total), 1400 B (used), 2696 B
> (free)
> Runtime SBI Version : 3.0
> Standard SBI Extensions :
> time,rfnc,ipi,base,hsm,pmu,dbcn,fwft,legacy,dbtr,sse
> Experimental SBI Extensions : none
>
> Domain0 Name : root
> Domain0 Boot HART : 0
> Domain0 HARTs : 0*,1*,2*,3*,4*,5*,6*,7*
> Domain0 Region00 : 0x00000000d4017000-0x00000000d4017fff M:
> (I,R,W) S/U: (R,W)
> Domain0 Region01 : 0x00000000e4000000-0x00000000e400ffff M:
> (I,R,W) S/U: ()
> Domain0 Region02 : 0x0000000000000000-0x000000000003ffff M:
> (R,X) S/U: ()
> Domain0 Region03 : 0x0000000000040000-0x000000000007ffff M:
> (R,W) S/U: ()
> Domain0 Region04 : 0x00000000e0000000-0x00000000e3ffffff M:
> (I,R,W) S/U: (R,W)
> Domain0 Region05 : 0x0000000000000000-0xffffffffffffffff M:
> () S/U: (R,W,X)
> Domain0 Next Address : 0x0000000000200000
> Domain0 Next Arg1 : 0x0000000000289058
> Domain0 Next Mode : S-mode
> Domain0 SysReset : yes
> Domain0 SysSuspend : yes
>
> Boot HART ID : 0
> Boot HART Domain : root
> Boot HART Priv Version : v1.12
> Boot HART Base ISA : rv64imafdcbvx
> Boot HART ISA Extensions :
> sscofpmf,sstc,zicntr,zihpm,zicboz,zicbom,svpbmt,sdtrig
> Boot HART PMP Count : 32
> Boot HART PMP Granularity : 12 bits
> Boot HART PMP Address Bits : 38
> Boot HART MHPM Info : 16 (0x0007fff8)
> Boot HART Debug Triggers : 8 triggers
> Boot HART MIDELEG : 0x0000000000002222
>
> Boot HART MEDELEG : 0x000000000000b109
>
> Anything else I can try?
OpenSBI v1.7-89-g51fe6a8b
____ _____ ____ _____
/ __ \ / ____| _ \_ _|
| | | |_ __ ___ _ __ | (___ | |_) || |
| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
| |__| | |_) | __/ | | |____) | |_) || |_
\____/| .__/ \___|_| |_|_____/|____/_____|
| |
|_|
Platform Name : Banana Pi BPI-F3
Platform Features : medeleg
Platform HART Count : 8
Platform IPI Device : aclint-mswi
Platform Timer Device : aclint-mtimer @ 24000000Hz
Platform Console Device : uart8250
Platform HSM Device : spacemit-hsm
Platform PMU Device : ---
Platform Reboot Device : ---
Platform Shutdown Device : ---
Platform Suspend Device : ---
Platform CPPC Device : ---
Firmware Base : 0x0
Firmware Size : 407 KB
Firmware RW Offset : 0x40000
Firmware RW Size : 151 KB
Firmware Heap Offset : 0x55000
Firmware Heap Size : 67 KB (total), 1 KB (reserved), 13 KB
(used), 52 KB (free)
Firmware Scratch Size : 4096 B (total), 1464 B (used), 2632 B (free)
Runtime SBI Version : 3.0
Standard SBI Extensions :
time,rfnc,ipi,base,hsm,pmu,dbcn,fwft,legacy,dbtr,sse
Experimental SBI Extensions : none
Domain0 Name : root
Domain0 Boot HART : 0
Domain0 HARTs : 0*,1*,2*,3*,4*,5*,6*,7*
Domain0 Region00 : 0x0000000000000000-0x000000000003ffff M:
(F,R,X) S/U: ()
Domain0 Region01 : 0x0000000000040000-0x000000000007ffff M:
(F,R,W) S/U: ()
Domain0 Region02 : 0x00000000d4017000-0x00000000d4017fff M:
(I,R,W) S/U: (R,W)
Domain0 Region03 : 0x00000000e4000000-0x00000000e400ffff M:
(I,R,W) S/U: ()
Domain0 Region04 : 0x00000000e0000000-0x00000000e3ffffff M:
(I,R,W) S/U: (R,W)
Domain0 Region05 : 0x0000000000000000-0xffffffffffffffff M:
() S/U: (R,W,X)
Domain0 Next Address : 0x0000000000200000
Domain0 Next Arg1 : 0x00000000002610b8
Domain0 Next Mode : S-mode
Domain0 SysReset : yes
Domain0 SysSuspend : yes
Boot HART ID : 0
Boot HART Domain : root
Boot HART Priv Version : v1.12
Boot HART Base ISA : rv64imafdcbvx
Boot HART ISA Extensions :
sscofpmf,sstc,zicntr,zihpm,zicboz,zicbom,svpbmt,sdtrig
Boot HART PMP Count : 32
Boot HART PMP Granularity : 12 bits
Boot HART PMP Address Bits : 38
Boot HART MHPM Info : 16 (0x0007fff8)
Boot HART Debug Triggers : 8 triggers
Boot HART MIDELEG : 0x0000000000002222
Boot HART MEDELEG : 0x000000000000b109
The log above is from my OpenSBI boot. Although I haven't had the time to
test booting the mainline kernel with mainline U-Boot yet, I noticed some
differences:
1. the version printed in my log is "OpenSBI v1.7-89-g51fe6a8b" (which
corresponds to the latest commit
51fe6a8bc958166ff79805cf69bafe5e297776f4),
whereas your output shows only "OpenSBI v1.7".
2. your boot log does not seem to list the HSM device:
Platform HSM Device : spacemit-hsm
I personally suggest checking these two points:
1. After updating the OpenSBI repository, run "rm -r build" to clear
previous build cache before recompiling. This ensures that all the
necessary files are effectively included in the build.
2. Check if the compatible in U-Boot's device tree (which should
be used by OpenSBI) matches the one in the OpenSBI code (specifically in
platform/generic/spacemit/k1.c and lib/utils/hsm/fdt_hsm_spacemit.c).
--
Best regards,
Junhui Liu
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