Raspberry Pi PCIe Devices

Re:Raspberry Pi PCIe Devices by geerlingguy on Monday December 28, 2020 @01:10AM (#25557131)

Follow https://github.com/geerlingguy/raspberry-pi-pcie-devices/iss... for progress. You can't boot directly from the SSD without a microSD card, but it (or SATA support for boot) may come soon... just a question of priorities for the Pi Engineering team.

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Re:Raspberry Pi PCIe Devices by dvdbloc on Monday December 28, 2020 @03:21AM (#25557625)

Do you happen to know if booting from the SSD is limited by the closed source bits of the Pi system or is this an effort the open source community can possibly contribute?

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Re:Raspberry Pi PCIe Devices by tmzt on Monday December 28, 2020 @11:06AM (#25560263)

Would a chip (such as a CPLD/FPGA) implementing mmc/sd be an option? It could host a chainloader with PCIe support and serve as a kind of rom.

Also, is there any work on kernel level x86 emulation on arm for expansion roms?

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Re:Raspberry Pi PCIe Devices by tyingq on Monday December 28, 2020 @09:49AM (#25559565)

I imagine it's limited quite a bit by the odd way the Pi boots. It's the GPU, not the CPU (or a BIOS type setup), that initially runs the bootloader.

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Re:Raspberry Pi PCIe Devices by jrwr on Monday December 28, 2020 @09:20AM (#25559334)

its mostly that the bootloader has to be patched to see the devices, this is no easy feat as it would bloat the bootloader pretty hard. a chain boot of MicroSD to SSD is best at this time.

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Re:Raspberry Pi PCIe Devices by geerlingguy on Monday December 28, 2020 @09:13AM (#25559270)

Closed source firmware bits, unfortunately.

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