<clever> samueldr: something i have thought of, that we could ask of the rpi foundation, is if start.elf could be modified to behave more like traditional firmware
<clever> basically, remove the arm initialization code from start.elf (or make it conditional on a flag)
<clever> and then let linux shove start.elf into ram, and trigger a vc4 jmp into an entry point
<clever> so you can unlock video out, after linux has booted
<clever> samueldr: according to that, ddr3 puts all of the dram modules in series, on a single bus, so the latency is different for every ram slot, and you need motherboard specific training data to calibrate it out
<clever> samueldr: but the rpi only has a single ram chip, so it should be just a single int?
<samueldr> isn't it LPDDR4?
<clever> i think so
<samueldr> yeah, LPDDR4
<clever> that also reminds me, the open-source firmware, hasnt been tested on the rpi4's dram controller and ddr4 stuff
<clever> so that may have to be reverse engineered first, before you can even start the above idea
<clever> samueldr: added haskell code for the firmware extractor to the previous gist
<clever> so you can unpack any eeprom file
<NickHu> Hi everyone, my Pinebook Pro is arriving tomorrow - I searched the IRC logs and saw that it's not working fully yet, but I'd like to get hacking on it too
<NickHu> Wouldn't everything 'just work' with the out of tree ayufan kernel?
<samueldr> likely to work, though I haven't looked at the BSP based kernels, considering working mainline is right around the corner
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<NickHu> Has anyone got a prebuilt installer image that will run it?
<NickHu> I booted the default debian distro, hit auto update, and then it bricked itself
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<gchristensen> wow
<samueldr> UEFI and ACPI, maybe some sanity, finally, in an aarch64 SBC
<gchristensen> wow.
<samueldr> though I can't seem to find confirmation about UEFI/ACPI in the docs of that board
<samueldr> ah, must be because of that document also in the tweet https://www.nxp.com/docs/en/user-guide/IMXWGU.pdf
<samueldr> not sure how relevant it is considering it's for i.MX6
<samueldr> or... maybe the docs are just written in a weird way
<samueldr> interesting, they seem to be using u-boot *and* and EDK2 u-boot https://stuff.samueldr.com/screenshots/2019/11/20191112144907.png
<samueldr> oopos, EDK2 uefi*
<samueldr> edk2-platforms/Platform/NXP/Sabre_iMX6Q_1GB/Sabre_iMX6Q_1GB.fdf
<samueldr> hmmm... would need to review my notes about holes in GPT, but program in sector 2 makes me think GPT will not work
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