Re: [seL4] A port to the Raspberry Pi 2?

The boot loader of choice on the Raspberry Pi is non trivial. https://thekandyancode.wordpress.com/2013/09/21/how-the-raspberry-pi-boots-u... http://elinux.org/RPi_U-Boot#Raspberry_Pi_Foundation_Tools So one strategy is to use the bootloader as it is now and replace the kernel (sel4) and friends that it loads. By building a working bootstrap chain you will have a handle for all the moving parts. Then decide what to change... On Sun, Mar 8, 2015 at 11:25 PM, Sebastian Lau wrote:

Well, I'll probably start one for a side project (being a student is busy... Not that working is any better). But wouldn't GRUB work as a bootloader as well or is it that sel4 only boots on uboot?

On Sun, 8 Mar 2015 11:23 Tom Mitchell wrote:

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On Sat, Mar 7, 2015 at 4:00 AM, Wolfgang Keller

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wrote:

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On Sat, Mar 7, 2015 at 6:18 AM, Sebastian Lau wrote:

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Would a port of seL4 to the raspberry pi 2 be welcome because I'm interested in buying a raspberry pi 2 and building sel4 for it?

I have not much knowledge about seL4, but the boot process of the RPi (all versions) is rather special:

Thanks for the R-Pi summary!

Some layers may be difficult to prove but that should not make it impossible to do good work.

Something along the lines... If Given: uboot is trusted. If Given: USB IO is trusted to devices ...UVW, XYZ.

The value of accepting some "Givens" is that other levels of work can move forward on a very inexpensive platform.

As a student platform the R-Pi is interesting because the student has a worthy (sufficiently interesting) platform to abuse for less than the price of a modern text book. Pop out the memory card reload it and start over. The students laptop has not crashed.

There is an old adage that to work on a car at home you need to have a second car available to go and get parts. With the R-Pi spare flash memory cards and USB memory give that spare vehicle to go and get parts....

Have fun.

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