NuttX on Ox64 BL808: After attaching RISC-V Exceptions. See https://github.com/lupyuen/nuttx-ox64

ox64-nuttx5.log

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[I][] | |  | |_ __   ___ _ __ | |_) | ___  _   _| |_| |_ __ _| | ___  
[I][] | |  | | '_ \ / _ \ '_ \|  _ < / _ \| | | |  _|  _/ _` | |/ _ \ 
[I][] | |__| | |_) |  __/ | | | |_) | (_) | |_| | | | || (_| | | (_) |
[I][]  \____/| .__/ \___|_| |_|____/ \___/ \__,_|_| |_| \__,_|_|\___/ 
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[I][] 
[I][] Powered by BouffaloLab
[I][] Build:11:52:04,Mar  6 2023
[I][] Copyright (c) 2023 OpenBouffalo team
[I][] Copyright (c) 2022 Bouffalolab team
[I][] dynamic memory init success,heap s[I][LowLoad] D0 start...
[I][LowLoad] low_load start... 
[I][LowLoad] Header at 0x5d5ff000
[I][LowLoad] Section dtb(1) - Start 0x5d5ff100, Size 14314
[I][LowLoad] Copying DTB to 0x51ff8000...0x51ffb7ea
[I][LowLoad] Done!
[I][LowLoad] Section OpenSBI(2) - Start 0x5d60f100, Size 109864
[I][LowLoad] Copying OpenSBI to 0x3ef80000...0x3ef9ad28
[I][LowLoad] Done!
[I][LowLoad] Section Kernel(3) - Start 0x5d62f100, Size 315597
[I][LowLoad] Uncompressing Kernel to 0x50000000...
[I][LowLoad] Done!
[I][LowLoad] CRC: 00000000
[I][LowLoad] load time: 61307 us 
[I][LowLoad] Setting PMP
[I][LowLoad] Booting OpenSBI at 0x000000003ef80000 with DTB at 0x51ff8000

OpenSBI v1.2
   ____                    _____ ____ _____
  / __ \                  / ____|  _ \_   _|
 | |  | |_ __   ___ _ __ | (___ | |_) || |
 | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
 | |__| | |_) |  __/ | | |____) | |_) || |_
  \____/| .__/ \___|_| |_|_____/|____/_____|
        | |
        |_|

Platform Name             : Pine64 Ox64 (D0)
Platform Features         : medeleg
Platform HART Count       : 1
Platform IPI Device       : aclint-mswi
Platform Timer Device     : aclint-mtimer @ 1000000Hz
Platform Console Device   : bflb_uart
Platform HSM Device       : ---
Platform PMU Device       : ---
Platform Reboot Device    : ---
Platform Shutdown Device  : ---
Firmware Base             : 0x3ef80000
Firmware Size             : 200 KB
Runtime SBI Version       : 1.0

Domain0 Name              : root
Domain0 Boot HART         : 0
Domain0 HARTs             : 0*
Domain0 Region00          : 0x00000000e4008000-0x00000000e400bfff (I)
Domain0 Region01          : 0x00000000e4000000-0x00000000e4007fff (I)
Domain0 Region02          : 0x000000003ef80000-0x000000003efbffff ()
Domain0 Region03          : 0x0000000000000000-0xffffffffffffffff (R,W,X)
Domain0 Next Address      : 0x0000000050000000
Domain0 Next Arg1         : 0x0000000051ff8000
Domain0 Next Mode         : S-mode
Domain0 SysReset          : yes

Boot HART ID              : 0
Boot HART Domain          : root
Boot HART Priv Version    : v1.11
Boot HART Base ISA        : rv64imafdcvx
Boot HART ISA Extensions  : time
Boot HART PMP Count       : 8
Boot HART PMP Granularity : 4096
Boot HART PMP Address Bits: 38
Boot HART MHPM Count      : 8
Boot HART MIDELEG         : 0x0000000000000222
Boot HART MEDELEG         : 0x000000000000b109


U-Boot 2023.04-rc2 (Mar 06 2023 - 11:48:40 +0000)

DRAM:  64 MiB
Core:  36 devices, 17 uclasses, devicetree: board
MMC:   mmc@20060000: 0
Loading Environment from FAT... Unable to read "uboot.env" from mmc0:2... 
Loading Environment from nowhere... OK
In:    serial@30002000
Out:   serial@30002000
Err:   serial@30002000
Net:   
Warning: emac@20070000 (eth0) using random MAC address - 7a:3f:0b:fa:42:2c
eth0: emac@20070000
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:2...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
Select the boot mode
1:.Pine64 0X64 Kernel
2:.Sipeed M1SDock Kernel
Enter choice: 1:.Pine64 0X64 Kernel
Retrieving file: /extlinux/../Image
append: root=PARTLABEL=rootfs rootwait rw rootfstype=ext4 console=ttyS0,2000000 loglevel=8 earlycon=sbi
Retrieving file: /extlinux/../bl808-pine64-ox64.dtb
## Flattened Device Tree blob at 51ff8000
   Booting using the fdt blob at 0x51ff8000
Working FDT set to 51ff8000
   Loading Device Tree to 0000000053f22000, end 0000000053f25fab ... OK
Working FDT set to 53f22000

Starting kernel ...

123ABCnx_start: Entry
up_irqinitialize: a
up_irqinitialize: b
up_irqinitialize: f
irq_attach: irq=0, isr=0x502080d2
irq_attach: irq=1, isr=0x502080d2
irq_attach: irq=2, isr=0x502080d2
irq_attach: irq=3, isr=0x502080d2
irq_attach: irq=5, isr=0x502080d2
irq_attach: irq=7, isr=0x502080d2
irq_attach: irq=4, isr=0x502080d2
irq_attach: irq=6, isr=0x502080d2
irq_attach: irq=8, isr=0x50208b5e
irq_attach: irq=9, isr=0x502080d2
irq_attach: irq=10, isr=0x502080d2
irq_attach: irq=11, isr=0x502080d2
irq_attach: irq=12, isr=0x502080d2
irq_attach: irq=13, isr=0x502080d2
irq_attach: irq=14, isr=0x502080d2
irq_attach: irq=15, isr=0x502080d2
irq_attach: irq=19, isr=0x502080d2
up_irqinitialize: c
riscv_dispatch_irq: irq=15
riscv_exception: EXCEPTION: Store/AMO page fault. MCAUSE: 000000000000000f, EPC: 0000000050207e6a, MTVAL: 00000000e0002100
riscv_exception: PANIC!!! Exception = 000000000000000f
_assert: Current Version: NuttX  12.0.3 8f318c3-dirty Nov  6 2023 15:45:46 risc-v
_assert: Assertion failed panic: at file: common/riscv_exception.c:85 task: Idle_Task process: Kernel 0x50200e50
up_dump_register: EPC: 0000000050207e6a
up_dump_register: A0: 0000000000000014 A1: 000000000000000a A2: 0000000000000010 A3: 000000000000000a
up_dump_register: A4: 000000000000000a A5: 00000000e0002000 A6: 000000000000003f A7: fffffffffffffff8
up_dump_register: T0: 000000000000002e T1: 000000000000006a T2: 00000000000001ff T3: 00000000000006c
up_dump_register: T4: 0000000000000068 T5: 0000000000000009 T6: 000000000000002a
up_dump_register: S0: 0000000050400b08 S1: 0000000050401fa8 S2: 0000000050401fa4 S3: 0000000050400af8
up_dump_register: S4: fffffffffffffff3 S5: 0000000053fe2f98 S6: 0000000000000000 S7: 0000000000000000
up_dump_register: S8: 0000000053f7a15c S9: 0000000053fcf2e0 S10: 0000000000000001 S11: 0000000000000003
up_dump_register: SP: 0000000050407b90 FP: 0000000050400b08 TP: 0000000000000000 RA: 0000000050207e64
dump_stack: User Stack:
dump_stack:   base: 0x50407010
dump_stack:   size: 00003056
dump_stack:     sp: 0x50407b90
stack_dump: 0x50407b80: 00000009 00000000 fffffff8 ffffffff 50400b08 00000000 50200fd8 00000000
stack_dump: 0x50407ba0: 50600000 00000000 01400000 00000000 53f7a15c 00000000 00000003 00000000
stack_dump: 0x50407bc0: 53f7a15c 00000000 53ff4680 00000000 00000000 00000000 502006e2 00000000
stack_dump: 0x50407be0: 00000400 00000000 50200726 00000000 eaaaaaaa aaaaaaaa 502000a4 00000000
dump_tasks:    PID GROUP PRI POLICY   TYPE    NPX STATE   EVENT      SIGMASK          STACKBASE  STACKSIZE      USED   FILLED    COMMAND
dump_tasks:   ----   --- --- -------- ------- --- ------- ---------- ---------------- 0x50400290      2048      2048   100.0%!   irq
dump_task:       0     0   0 FIFO     Kthread N-- Running            0000000000000000 0x50407010      3056       640    20.9%    Idle_Task