NuttX on Ox64 BL808: Disable UART Interrupt. See https://github.com/lupyuen/nuttx-ox64

ox64-nuttx7.log

[I][] 
[I][]   ____                   ____               __  __      _       
[I][]  / __ \                 |  _ \             / _|/ _|    | |      
[I][] | |  | |_ __   ___ _ __ | |_) | ___  _   _| |_| |_ __ _| | ___  
[I][] | | | | '_ \ / _ \ '_ \|  _ < / _ \| | | |  _|  _/ _` | |/ _ \ 
[I][] | |__| | |_) |  __/ | | | |_) | (_) | |_| | | | || (_| | | (_) |
[I][]  \____/| .__/ \___|_| |_|____/ \___/ \__,_|_| |_| \__,_|_|\___/ 
[I][]        | |                                                      
[I][]        |_|                                                      
[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 0x50000
[I][LowLoad] Done!
[I][LowLoad] CRC: 00000000
[I][LowLoad] load time: 61311 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 - b6:9a:5a:92:0a:d2
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: /extlibl808-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=0x50208048
irq_attach: irq=1, isr=0x50208048
irq_attach: irq=2, isr=0x50208048
irq_attach: irq=3, isr=0x50208048
irq_attach: irq=5, isr=0x50208048
irq_attach: irq=7, isr=0x50208048
irq_attach: irq=4, isr=0x50208048
irq_attach: irq=6, isr=0x50208048
irq_attach: irq=8, isr=0x50208ad4
irq_attach: irq=9, isr=0x50208048
irq_attach: irq=10, isr=0x50208048
irq_attach: irq=11, isr=0x50208048
irq_attach: irq=12, isr=0x50208048
irq_attach: irq=13, isr=0x50208048
irq_attach: irq=14, isr=0x50208048
irq_attach: irq=15, isr=0x50208048
irq_attach: irq=19, isr=0x50208048
up_irqinitialize: c
up_irqinitialize: d
up_irqinitialize: e
up_irqinitialize: g
irq_attach: irq=17, isr=0x50207e64
up_enable_irq: irq=17
uart_register: Registering /dev/console
uart_register: Registering /dev/ttyS0
work_start_lowpri: Starting low-priority kernel worker thread(s)
_assert: Current Version: NuttX  12.0.3 b244f85-dirty Nov  6 2023 17:35:34 risc-v
_assert: Assertion failed ret >= 0: at file: init/nx_bringup.c:283 task: AppBringUp process: Kernel 0x5020107e
up_dump_register: EPC: 000000005020f698
up_dump_register: A0: 0000000050401d50 A1: 000000000000011b A2: 0000000050219b30 A3: 000000000000007e
up_dump_register: A4: 0000000050409950 A5: 0000000000000001 A6: 0000000050407d18 A7: fffffffffffffff8
up_dump_register: T0: 000000000000002e T1: 0000000000000007 T2: 00000000000001ff T3: 000000005040c6dc
up_dump_register: T4: 000000005040c6d0 T5: 0000000000000009 T6: 000000000000002a
up_dump_register: S0: 0000000000000000 S1: 0000000050409950 S2: 0000000000000000 S3: 0000000000000000
up_dump_register: S4: 0000000050219b30 S5: 0000000050219b40 S6: 0000000200042022 S7: 0000000050401f90
up_dump_register: S8: 000000000000011b S9: 0000000000000000 S10: 0000000000000000 S11: 0000000000000000
up_dump_register: SP: 000000005040c660 FP: 0000000000000000 TP: 0000000000000000 RA: 000000005020f698
dump_stack: User Stack:
dump_stack:   base: 0x5040c030
dump_stack:   size: 00002000
dump_stack:     sp: 0x5040c660
stack_dump: 0x5040c660: 5020107e 00000000 fffffffc ffffffff ffffff83 ffffffff 50407c00 00000000
stack_dump: 0x5040c680: 50409950 00000000 50401d50 00000000 50219b30 00000000 50219b40 00000000
stack_dump: 0x5040c6a0: 0000011b 00000000 7474754e ffff0058 ffffff83 ffffffff 50400170 00000000
stack_dump: 0x5040c6c0: 50400170 00000000 5020506c 00000000 50225060 00000000 50219b10 2e323100
stack_dump: 0x5040c6e0: 00332e30 00000000 502050e4 00000000 32620170 38663434 69642d35 20797472
stack_dump: 0x5040c700: 20766f4e 32203620 20333230 333a3731 34333a35 ffffff00 50209572 00000000
stack_dump: 0x5040c720: ffffffea 736972ff 00762d63 00000000 504092c0 00000000 5040a8b0 00000000
stack_dump: 0x5040c740: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x5040c760: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x5040c780: 00000000 00000000 00000064 00000000 00000c00 00000000 50204f7e 00000000
stack_dump: 0x5040c7a0: 00000c00 00000000 502010e4 00000000 00000000 00000000 00026400 00000000
stack_dump: 0x5040c7c0: 00000000 00000000 00000c00 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x5040c7e0: 00000000 00000000 50201aea 00000000 00000000 00000000 00000000 00000000
dump_tasks:    PID GROUP PRI POLICY   TYPE    NPX STATE   EVENT      SIGMASK          STACKBASE  STACKSIZE      USED   FILLED    COMMAND
dump_tasks:   ----   --- --- -------- ------- --- ------- ---------- ---------------- 0x50400290      2048        72     3.5%    irq
dump_task:       0     0   0 FIFO     Kthread N-- Ready              0000000000000000 0x50407010      3056       792    25.9%    Idle_Task
dump_task:       1     1 100 RR       Kthread --- Ready              0000000000000000 0x5040a050      1968       528    26.8%    lpwork 0x50401ae0 0x50401b08
dump_task:       2     2 240 RR       Kthread --- Running            0000000000000000 0x5040c030      2000      1376    68.8%    AppBringUp