Hi Pangao, That's great to hear that you managed to build and load the android OS. Seems like it needs a combination of android-12 kernel with android-11 aosp. I wonder what additional steps are needed to make it work with android-12 aosp + android-12 kernel. Perhaps you could try with an unmodified and clean kernel and see if those apks that are crashing will work or not. This can help to verify whether the changes you made to the kernel configurations would affect those apks.
That's a great reference to use. I built LineageOS previously as well for Android 11 just to test out my development environment. Hope it would help with your project as well. Thanks. Best regards, Joshua On Tuesday, 30 November 2021 at 11:49:03 UTC+8 pangao...@gmail.com wrote: > Hi Joshua, > > Thanks for your reply! > > > Are you building an unmodified image of AOSP and kernel for Android 12? > Yes and no. I did add some kernel options to the default, such as > CONFIG_KPROBES, CONFIG_KPROBE_EVENT, CONFIG_FTRACE_SYSCALLS and so on. But > I tried with unmodified kernel and it still won't boot. > > > Have you also copied the kernel modules (.ko) files to > device/google/<product> folder? > Yes, I've copied all the regular files to that folder (rm > device/google/redbull-kernel/*; cp -v > /build/android-kernel/out/android-msm-pixel-4.19/dist/* > device/google/redbull-kernel/) > > FYI, I just switch my AOSP repo to android-11_r34 and build the project > using the above tricks (build kernel -> copy ko/img -> build aosp -> > repalce vendor_boot), it works and successfully boot into android launcher! > Then I switch the kernel branch to android-msm-redbull-4.19-android12 and > rebuid, it works, too. > Then I add my KPROBE config to the BUILD_CONFIG and rebuild, and also > successfully boot to android launcher. However some of the APK will > randomly crash, which is really wierd. > > Now I am checking about LineageOS's repo, It seems that the kernel source > is included (unlike AOSP, which only includes the kernel prebuilts). > > Thanks again, > Pangao > On Thursday, November 25, 2021 at 3:29:50 AM UTC+8 droi...@gmail.com > wrote: > >> Hi Serena, >> >> An yeong ha se yo! >> >> I checked the size of my product.img in out/target/product/redfin and it >> is 229MB. Maybe you can compare the size of your product.img with mine. >> I am using branch refs/tags/android-11.0.0_r34 for AOSP. >> >> I didn't use the vendor_overlay method which you shared. I just copied >> the vendor_boot.img file from my kernel output folder to AOSP. Then I just >> flash directly without rebuilding again. >> May I know which AOSP branch and phone are you using? >> >> >> Hi Pangao, >> >> Ni hao! >> >> Sorry I haven't moved to Android 12 yet and I am still on Android 11. >> Maybe we might move to the newer android version once I have completed my >> work on 11. >> Are you building an unmodified image of AOSP and kernel for Android 12? >> >> Ok if you have checked that the vendor_boot.img are the same then you may >> skip that step. Have you also copied the kernel modules (.ko) files to >> device/google/<product> folder? >> Perhaps try to also include all the .img and .tar.gz files. >> >> Thank you. >> >> Best regards, >> Joshua >> >> On Thursday, 18 November 2021 at 18:16:32 UTC+8 pangao...@gmail.com >> wrote: >> >>> Thank you for the tips! >>> I was building AOSP android-12.0.0_r11 and >>> android-msm-redbull-4.19-android12 kernel. However when I fastboot >>> flashall, it hangs on step2 (rebooting to userspace fastbootd) then throw >>> errors and fallback to recovery mode, showing some error like 'failed to >>> find /dev/block/.../misc'. >>> >>> I think it's not about the vendor_boot.img but the vendor.img (which >>> packs all the .ko kernel modules) since I unpack and verify that the >>> vendor_boot.img generate by AOSP and the kernel modules are same as those >>> from the kernel build. >>> Still trying to find a solution, or try Android 11 instead :< >>> >>> On Wednesday, June 23, 2021 at 1:11:13 PM UTC+8 droi...@gmail.com wrote: >>> >>>> Hi, >>>> >>>> I managed to solve this issue! Was able to build and boot a custom >>>> kernel on the Pixel 5! >>>> It seems that Google has made some architectural changes to the kernel >>>> in Android 11 as shown in the following link: >>>> https://source.android.com/setup/start/android-11-release#kernel >>>> >>>> What I realized is that after building the kernel, it generates a >>>> boot.img and *vendor_boot.img* >>>> Usually we only have boot.img but this time there is an additional >>>> vendor boot file. This led me to the idea that we need to also flash this >>>> file to the phone. >>>> >>>> These are the steps that I generally performed: >>>> >>>> 1. repo init -u https://android.googlesource.com/kernel/manifest -b >>>> android-msm-redbull-4.19-android11-qpr2 >>>> 2. repo sync >>>> 3. Build custom kernel with *build_redbull.sh* script: >>>> ./build_redbull.sh >>>> 4. After building, boot.img and vendor_boot.img gets created in >>>> kernel/out/android-msm-pixel-4.19/dist/ along with loadable modules and >>>> Image.lz4 and Image.lz4-dtb >>>> 5. Go to AOSP folder. Copy Image.lz4, Image.lz4-dtb, >>>> kernel-uapi-headers.tar.gz and all the *.ko kernel modules from >>>> *kernel/out**/android-msm-pixel-4.19/dist/* to >>>> *aosp/device/google/redbull-kernel* folder. >>>> >>>> You may back-up the aosp/device/google/redbull-kernel folder at >>>> another location in case we would like to restore to the default files. >>>> 6. Run *make* to rebuild the images >>>> 7. Copy the vendor_boot.img from kernel to >>>> *out/target/product/redfin* folder >>>> 8. *adb reboot bootloader* >>>> 9. *fastboot flashall -w* >>>> >>>> fastboot version: 31.0.2-7242960 >>>> This was tested with AOSP android-11.0.0_r34 but I believe it can also >>>> work for other versions. >>>> >>>> Hope this is able to help you save two weeks of development time. At >>>> least that was the time it took me to setup a base AOSP and kernel on the >>>> Pixel 5. >>>> >>>> On Wednesday, 16 June 2021 at 06:35:08 UTC+8 afer...@gmail.com wrote: >>>> >>>>> I'm following the instructions on source.android.com >>>>> <https://source.android.com/setup/build/building-kernels> for >>>>> building kernels and unable to get it working on the Pixel 5. >>>>> >>>>> There are a couple of paths I've taken with differing results. >>>>> >>>>> 1. Check out the aosp-kernel android-msm-redbull-4.19-android11-qpr2 >>>>> branch >>>>> 2. Run the build_redbull.sh (or build_rebull-gki.sh) script. >>>>> 3. In the aosp directory, export TARGET_PREBUILT_KERNEL to the built >>>>> Image.lz4-dtb from aosp-kernel >>>>> 4. flash aosp using `fastboot flashall -w` >>>>> 5. Observe bootloop, the devices never reaches a point where adbd >>>>> starts and I can shell in >>>>> >>>>> Then I saw from other posts that when recompiling the kernel the >>>>> prebuilt kernel modules that are in the aosp repository are out of date >>>>> and >>>>> are being packaged into the vendor_boot image and failing to load. >>>>> >>>>> So... next I tried copying all of the compiled aosp-kernel modules and >>>>> images into the aosp/device/google/redbull-kernel directory and >>>>> rebuilding. >>>>> >>>>> This gets farther and I'm now able to adb shell into the device, but >>>>> the display stays on the Android boot logo and various other >>>>> services/sensors don't work. >>>>> >>>>> So, my question is, what's the process for a successful build/flash of >>>>> the aosp kernel on the Pixel 5? >>>>> >>>>> For reference I'm using the aosp android-11.0.0_r37 branch and aosp >>>>> kernel android-msm-redbull-4.19-android11-qpr2 branch. >>>>> >>>>> Any help/instruction would be greatly appreciated! >>>>> >>>> -- -- You received this message because you are subscribed to the "Android Building" mailing list. 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