Apache #NuttX RTOS supports 64-bit multi-core Arm Cortex-A53 ... Let's test it on #QEMU today ... Maybe on #PinePhone someday!

https://github.com/lupyuen/pinephone-nuttx

What do #PinePhone and Apache #NuttX RTOS have in common? They both run on Arm Cortex-A53 with 4 Cores!

https://github.com/lupyuen/pinephone-nuttx

Let's download #NuttX Mainline ... Which has the latest updates for Arm Cortex-A53

https://github.com/lupyuen/pinephone-nuttx#download-nuttx

We'll cross-compile Apache #NuttX RTOS for Arm Cortex-A53 with the Arm64 Toolchain

Source: https://github.com/lupyuen/pinephone-nuttx#download-toolchain

Here's how we build Apache #NuttX RTOS for Arm Cortex-A53

https://github.com/lupyuen/pinephone-nuttx#build-nuttx-single-core

Apache #NuttX RTOS runs on #QEMU, emulating Arm Cortex-A53 ... Yep it looks like Linux!

https://github.com/lupyuen/pinephone-nuttx#test-nuttx-with-qemu-single-core

#PinePhone's UART Port ... In disguise 🤫

https://github.com/lupyuen/pinephone-nuttx#uart-driver-for-nuttx

From Single Core to Multi Core ... Now we build Apache #NuttX RTOS for Arm Cortex-A53 with 4 Cores

https://github.com/lupyuen/pinephone-nuttx#build-nuttx-multi-core

Watch Apache #NuttX RTOS fire up 4 Cores of Arm Cortex-A53 ... Emulated with #QEMU

https://github.com/lupyuen/pinephone-nuttx#test-nuttx-with-qemu-multi-core

How #NuttX is implemented for Arm Cortex-A53

https://github.com/lupyuen/pinephone-nuttx#inside-nuttx-for-cortex-a53

Loading the #NuttX Image into #Ghidra ... Reveals a #Linux Kernel Header!

https://github.com/lupyuen/pinephone-nuttx#nuttx-image

Snooping #PinePhone's Jumpdrive #Linux Kernel ... With #Ghidra

https://github.com/lupyuen/pinephone-nuttx#pinephone-image

Apache #NuttX RTOS might boot on #PinePhone ... With a few patches!

https://github.com/lupyuen/pinephone-nuttx#will-nuttx-boot-on-pinephone

#PinePhone needs a UART Driver for Apache #NuttX RTOS

https://github.com/lupyuen/pinephone-nuttx#uart-driver-for-nuttx

All ready for @PINE64 #PinePhone hacking 👍

https://lupyuen.github.io/articles/arm#appendix-pinephone-uart-log

#PinePhone boots Apache #NuttX RTOS yay! 🎉

https://lupyuen.github.io/articles/arm?88#will-nuttx-boot-on-pinephone

Will Apache #NuttX RTOS run on #PinePhone @PINE64 ? Let's explore in this article

https://lupyuen.github.io/articles/arm?1

Let's download #NuttX RTOS ... And build it for Arm Cortex-A53

https://lupyuen.github.io/articles/arm?2#download-nuttx

Here's how we build #NuttX RTOS for 64-bit Arm Cortex-A53

https://lupyuen.github.io/articles/arm?3#build-nuttx-single-core

#QEMU runs #NuttX RTOS ... Emulating 64-bit Arm Cortex-A53

https://lupyuen.github.io/articles/arm?4#test-nuttx-single-core

How we build and run #NuttX RTOS for Multi-Core Arm64

https://lupyuen.github.io/articles/arm?5#build-nuttx-multi-core

#NuttX RTOS has plenty of helpful code for Arm64

https://lupyuen.github.io/articles/arm?6#inside-nuttx-for-arm64

#Ghidra reveals that our #NuttX Arm64 Image begins ... With a #Linux Kernel Header!

https://lupyuen.github.io/articles/arm?7#nuttx-image

#Linux Kernel Header ... Used by #NuttX Arm64 too

https://lupyuen.github.io/articles/arm?7#nuttx-image

Configuring the RAM for #NuttX Arm64

https://lupyuen.github.io/articles/arm?8#nuttx-ram

Analysing a #PinePhone Kernel Image with #Ghidra

https://lupyuen.github.io/articles/arm?9#pinephone-image

#NuttX RTOS might boot on #PinePhone ... With a few fixes!

https://lupyuen.github.io/articles/arm?10#will-nuttx-boot-on-pinephone

A Real-Time Operating System might be good for #PinePhone

https://lupyuen.github.io/articles/arm?12#pinephone-on-rtos

We might build #NuttX Drivers and Apps for #PinePhone ... In #ZigLang!

https://lupyuen.github.io/articles/arm?15#pinephone-drivers-and-apps

How we load a #NuttX Image into #Ghidra for analysis

https://lupyuen.github.io/articles/arm?16#appendix-analyse-nuttx-image-with-ghidra