Rene Treffer

ACPI+devicetree works if the following patch is applied: https://github.com/rtreffer/edk2-platforms/commit/126fdc009f215b3491760011ac08f8515e2b6bfd @jlinton would you consider the missing ACPI only support a blocker against enabling this upstream?

Hrhr, mentioned CM4 support is partly from me :-P At least 1 or 2 patches.... You can build that EDK2 with x86/x86_64 emulation support to load the x86 UEFI drivers...

@mi-hol ok, from the top of my head..... - You can flash an UEFI option rom to the raid controller (see e.g. [this post](https://forums.serverbuilds.net/t/guide-updating-your-lsi-sas-controller-with-a-uefi-motherboard/131) - you will most likely need...

@mi-hol no, because that tool runs as part of the POST, not as a UEFI driver (unless I am mixing something up). AFAIK some Dell machines have full UEFI support,...

+1 and subscribed. sonatype is not that hard to use....

With all this knowledge I thought it would be time to try an actual upgrade. I took the `UPDATE.mem 2.0.2.6` from https://github.com/denisandroid/uPD72020x-Firmware ``` ( echo -ne '\x28\x00\x00\xff\x01\xff\x02\xff\x03\xff\x0c\x00\x0d\x00\x0e\x00\x0f\x00\x10\x00\x11\x00\x12\x00\x13\x00\x14\x00\x15\x00\x16\x55\x17\x00\x18\x00\x19\x00\x1a\x01\x1b\x05\xe7\xef' cat uPD72020x-Firmware/UPDATE.mem\ 2.0.2.6...

Yes, it would be great to have that in a wiki or markdown file. I was puzzled by the erase block size too. But I by now assume that the...

That datasheet also says it should be possible to update the first copy by issuing a chip erase (not implemented, but would be easy) followed by an upload. And @pclinuxer...

You can get away with 1. block erase / full erase function, 2. block size and 3. write function. This might be doable with a few bytes of config. Just...

@lvmtime I've done a write up with pictures of the flash at https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/103#issuecomment-804034815 It shows you what a EEPROM chip looks like, how to flash it out of band etc....