Booting ARM Linux in a standard way #ARM @tuxphones
Tow-Boot is a relatively new project for bringing some consistency to the way Linux is booted on ARM. This is both aimed at the Linux single board computers and the new wave of Linux phones.
On these devices the most common platform firmware is U-Boot. In some cases the U-Boot provided with the device is a nice and clean mainline U-Boot, in other cases it’s the U-Boot build provided by the manufacturer of the SoC.
One big difference between x86 computers and the ARM ecosystem is functionality that you’d expect from the bios/uefi in the hardware is actually in most cases part of the operating system that’s installed. This means there’s no consistency at all.
Getting to a boot menu on a normal computer is already a mess where you have to guess if you have to press Escape F10, F11, F12 or Delete. On ARM this is worse because this might depend on the operating system you have flashed at that moment.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.