Vinod wrote a great blog post detailing how to boot the mainline kernel on Qualcomm devices: https://www.linaro.org/blog/let-s-boot-the-mainline-linux-kernel-on-qualcomm...
Here's a summary of the commands I execute on my ARM64 Linux dev PC to boot the Open-Q 865 with the new device tree:
# make defconfig # make Image.gz dtbs modules # make modules_install INSTALL_MOD_PATH=./modules_dir INSTALL_MOD_STRIP=1 # cat initramfs-test-image-qemuarm64-20230321073831-1379.rootfs.cpio.gz modules.cpio.gz > final-initramfs.cpio.gz # cat arch/arm64/boot/Image.gz arch/arm64/boot/dts/qcom/qrb5165-lantronix-openq865.dtb > Image.gz+dtb # CMDLINE="ignore_loglevel earlycon" # git clone https://git.codelinaro.org/clo/qsdk/oss/tools/skales --depth=1 # python2 ./skales/mkbootimg --kernel Image.gz+dtb --cmdline ${CMDLINE} --ramdisk final-initramfs.cpio.gz --base 0x80000000 --pagesize 4096 --output boot.img # fastboot boot boot.img
If you encounter any problems just let me know and I can help you out.
William Breathitt Gray
On Wed, 31 May 2023 at 10:32, William Gray william.gray@linaro.org wrote:
Hi Patrick,
Here's an an initial commit for the Lantronix Open-Q 865 devkit that gets it booting up to a console (albeit with a very spare DTS): https://git.codelinaro.org/william_gray/openq-865/-/commit/42f82bde586fd1c33...
The main files of interest are *openq5165rb.dtsi *which serves as an include for the the QRB5165RB SOM, while the *qrb5165-lantronix-openq865.dts* is the main DTS for the board. I based this around the definitions for the qrb5165-rb5 which is mostly compatible; I'll be making adjustments throughout to fit the openq865 more aptly (e.g. defining a pm8250 based on the existing pm8150 nodes).
You can follow my v5.15 development here: https://git.codelinaro.org/william_gray/openq-865/-/tree/openq865-v5.15
William Breathitt Gray
On Thu, 25 May 2023 at 13:27, William Gray william.gray@linaro.org wrote:
Hi Patrick,
I'm working on a device tree for Open-Q 865 that is based on the current arch/arm64/boot/dts/qcom/qrb5165-rb5.dts upstream in 6.4-rc1. I should have a basic bootable device tree ready for you to test by our next meeting on May 31. I'll also rebase a version on 5.15 so you can try that as well (qrb5165-rb5 device tree works on 5.15 so I don't anticipate any issues for the open-q 865).
William Breathitt Gray
On Thu, 25 May 2023 at 13:17, Patrick Whewell < patrick.whewell@sightlineapplications.com> wrote:
Hello,
In our last meeting on May 17 it was mentioned that there was work being done on the Lantronix device tree and it was booting in 6.4(? I think that was the version) kernel.
How’s work on porting to 5.15 going? Is there a way to get the 6.4 kernel and the device tree to test out the booting locally for us?
*Patrick Whewell*
*Software Engineer*
He/him
*patrick.whewell@sightlineapplications.com patrick.whewell@sightlineapplications.com*
www.sightlineapplications.com
*5711 S Hood Ave., Suite 100*
*Portland, OR 97239*
http://sightlineapplications.com/
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