Apache NuttX RTOS for PinePhone: Boot Log. See https://lupyuen.github.io/articles/what

pinephone-nuttx-boot.log

DRAM: 2048 MiB
Trying to boot from MMC1
NOTICE:  BL31: v2.2(release):v2.2-904-gf9ea3a629
NOTICE:  BL31: Built : 15:32:12, Apr  9 2020
NOTICE:  BL31: Detected Allwinner A64/H64/R18 SoC (1689)
NOTICE:  BL31: Found U-Boot DTB at 0x4064410, model: PinePhone
NOTICE:  PSCI: System suspend is unavailable


U-Boot 2020.07 (Nov 08 2020 - 00:15:12 +0100)

DRAM:  2 GiB
MMC:   Device 'mmc@1c11000': seq 1 is in use by 'mmc@1c10000'
mmc@1c0f000: 0, mmc@1c10000: 2, mmc@1c11000: 1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

starting USB...
No working controllers found
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
653 bytes read in 3 ms (211.9 KiB/s)
## Executing script at 4fc00000
gpio: pin 114 (gpio 114) value is 1
349776 bytes read in 19 ms (17.6 MiB/s)
Uncompressed size: 10518528 = 0xA08000
36162 bytes read in 4 ms (8.6 MiB/s)
1078500 bytes read in 51 ms (20.2 MiB/s)
## Flattened Device Tree blob at 4fa00000
   Booting using the fdt blob at 0x4fa00000
   Loading Ramdisk to 49ef8000, end 49fff4e4 ... OK
   Loading Device Tree to 0000000049eec000, end 0000000049ef7d41 ... OK

Starting kernel ...

- Ready to Boot CPU
- Boot from EL2
- Boot from EL1
- Boot to C runtime for OS Initialize
nsh: mkfatfs: command not found

NuttShell (NSH) NuttX-11.0.0-pinephone
nsh> 
nsh> 
nsh> uname -a
NuttX 11.0.0-pinephone 1c62181 Jan  1 2023 21:50:10 arm64 pinephone
nsh> 
nsh> help
help usage:  help [-v] [<cmd>]

  .         cd        dmesg     free      mkrd      reboot    test      unset     
  [         cp        echo      help      mount     rm        time      uptime    
  ?         cmp       env       hexdump   mv        rmdir     true      usleep    
  basename  dirname   exec      kill      printf    set       truncate  xd        
  break     dd        exit      ls        ps        sleep     uname     
  cat       df        false     mkdir     pwd       source    umount    

Builtin Apps:
  fb        getprime  hello     leds      lvgldemo  nsh       ostest    sh        
nsh> 
nsh> ls /dev
/dev:
 console
 fb0
 null
 ram0
 ram2
 ttyS0
 userleds
 zero
nsh> 
nsh> fb
VideoInfo:
      fmt: 21
     xres: 720
     yres: 1440
  nplanes: 1
PlaneInfo (plane 0):
    fbmem: 0x4069057c
    fblen: 4147200
   stride: 2880
  display: 0
      bpp: 32
Mapped FB: 0x4069057c
 0: (  0,  0) (720,1440)
 1: ( 65,130) (590,1180)
 2: (130,260) (460,920)
 3: (195,390) (330,660)
 4: (260,520) (200,400)
 5: (325,650) ( 70,140)
Test finished
nsh> 
nsh> lvgldemo widgets