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Raspberry Pi Bare Bones: Difference between revisions

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Raspberry Pi Bare Bones (view source)

Revision as of 20:56, 15 February 2017

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→‎Testing your operating system (Real Hardware)
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=== Testing your operating system (Real Hardware) ===
 
Do you still have the SD card with the original Raspbian image on it from when you where testing the hardware above? Great. So you already have a SD card with a boot partition and the required files. If not then download one of the original raspberryRaspberry boot images and copy them to the SD card.
 
Now mount the first partition from the SD card and look at it:
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Simplified when the RPi powers up the ARM cpuCPU is halted and the GPU runs. The GPU loads the bootloader from ROM and executes it. That then finds the SD card and loads the bootcode.bin. The bootcode handles the config.txt and cmdline.txt (or does start.elf read that?) and then runs start.elf. start.elf loads the kernel.img and at last the ARM cpuCPU is started running that kernel image.
 
So now we replace the original kernel.img with our own, umount, sync, stick the SD card into RPi and turn the power on.
Your minicomMinicom should then show the following:
 
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