On Tue, Jul 14, 2026 at 05:26:22PM +0000, Yao Zi wrote: > On Wed, Jul 01, 2026 at 11:59:26AM -0600, Tom Rini wrote: > > On Wed, Jul 01, 2026 at 11:17:52AM +0000, Yao Zi wrote: > > > > > Hi all, > > > > > > After talking to Jiaxun privately, I decided to take over the series. > > > > > > So far this series has implemented general support for initializing CPU, > > > exceptions, kernel booting, CPU and timer drivers, QEMU LoongArch virt > > > machine support and UEFI standard compliant EFI booting support. > > > > > > LoongArch had defined 3 ISA variants, LA64, LA32 and LA32R (Reduced, > > > intended for MCUs and education purpose). This is a little-endian only > > > architecture. Only LA64 is implemented in this series since the hardware > > > is more widely available, and I'll work on 32bit support later. > > > > > > This series had passed checkpatch with exceptions on some false alarms > > > and headers imported elsewhere. I've tested virtio devices, direct > > > kernel booting, efistub kernel booting and grub. For loongarch64 CI, I > > > would continue to work on Jiaxun's another series[1] soon. > > > > > > Toolchain can be found at [2] or using upstream one, to build > > > > > > make qemu-loongarch64_defconfig > > > make > > > > > > To run in QEMU: > > > > > > qemu-system-loongarch64 -nographic -machine virt -bios u-boot.bin > > > > So on this note, we need to also have changes for: > > - buildman to fetch the toolchain, which is easy since it's part of the > > normal kernel.org ones. > > - tools/docker/Dockerfile to fetch the toolchain, for CI > > - Changes to .gitlab-ci.yml and .azure-pipelines.yml to build loongarch > > - Changes to those files to also fire off QEMU for loonarch > > - Changes to https://source.denx.de/u-boot/u-boot-test-hooks to support > > the previous requirement. > > Okay, I've talked to Jiaxun and will also continue to work on his > previous series[1] to add CI stuff. > > > > > > > TODOs on the architecture & board: > > > - loongson,ls7a-rtc driver > > > - The only device on QEMU board haven't been supported yet > > > - LoongArch sandbox host support > > > - TLB enablement > > > - This is required for real CPU to utilize caches > > > - Possibly EFI-APP support for real machine > > > > > > I have one question regarding the process: I've decided to > > > coordinate with Jiaxun to maintain the loongarch port, and AFAIK we > > > would need a custodian tree on U-Boot's GitLab instance in order to run > > > CI. If this true, what's the process of creating a tree? > > > > I can work with you both off-list to get one created. > > Thanks, should we contact with you now so I could include a MAINTAINERS > patch with correct git URL in the next version, or wait until this > series gets merged?
Lets go ahead and get started now. Please register on git.u-boot-project.org and from there I'll make a u-boot-loongarch tree for you to work in. -- Tom
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