On Fri, Mar 27, 2026 at 9:25 AM Marko Mäkelä <[email protected]> wrote: > > Thu, Mar 26, 2026 at 06:23:20PM -0500, Randolph Sapp wrote: > [snip] > >Alright, looking into the allocation helpers it seems that > >EFI_CONVENTIONAL_MEMORY can be remapped in efi_allocate_pages so long as LMB > >agrees that it's free. This aligns with my understanding of the UEFI spec as > >well. I dumped the EFI memory map and noticed there were 2 fragmented > >sections > >of EFI_CONVENTIONAL_MEMORY that it could still use. > > > >Wired up efi_allocate_pages to go to those regions and attempt to allocate > >from > >there in the even an LMB_MEM_ALLOC_MAX or LMB_MEM_ALLOC_ANY start failing. > >Seems > >to have worked, but now I'm seeing the following reported in the kernel: > [snip] > > I can't help with that, but I hope that someone can. Because I intend to > work on improvements related to secure boot and FIT verification, having > this board working in the current u-boot would be really great. I'm > looking forward to test a revised patch set. > > Coincidentally, I just got a PocketBeagle 2 yesterday. It took a while > for me to find some useful u-boot source code. I came across > https://github.com/beagleboard/u-boot/commit/64be5e474943dc5c6e6e01edc124ff6f53f616a4 > which is a few changes ahead of u-boot: > > 64be5e47494 arm: dts: k3-am62-r5-pocketbeagle2: remove chosen uart override > e1207aad9b0 arm: dts: k3-am62-pocketbeagle2: add boot phase flag to uart6 > 23f9fc5d6da arm: mach-k3: am62: add &main_uart6 to clock and pwr tree > 156a9bb1410 add: k3-am62-pocketbeagle2 > > On a merge to the current u-boot master, I discarded a change to > k3_get_a53_max_frequency(void) by 156a9bb1410 because that function has > been replaced with am62p_map[]. In that array, the clock rates for the > speed grades S,T,U,V would conflict with patch. I don't expect this to > be essential, but I thought that I would mention it because there were > no adjustments to the speed grade in this patch set.
Marko, here's my last wip, before Randolph submitted: https://github.com/beagleboard/u-boot/tree/v2026.01-am62-pocketbeagle2 v2026.04-rc* has had more TI changes for low-memory (512MB) devices hitting mainline so things have changed again to work around k3 stuff.. Regards, -- Robert Nelson https://rcn-ee.com/
