** Description changed: Impact: - The bionic/snapdragon kernel should work on qcom410 and qcom820 - chipsets, but due to some bugs, it never booted on any qcom820 board - (e.g. Qualcomm DB820C APQ8096). + Altough the Bionic/snapdragon kernel contains the BSP from the Qualcomm landing + tree kernel[1], it didn't work on Snapdragon 820 based board (e.g. Qualcomm + DB820C APQ8096). Fix: - Import all the necessary patches (see the pull request below). + Import the necessary patches to make it boot on such board (and clones). How to test: - 1) put the board in fastboot mode (see [1]) + 1) put the board in fastboot mode (see [2]) 2) generate a compatible boot.img: $ cat linux/arch/arm64/boot/Image.gz linux/arch/arm64/boot/dts/qcom/apq8096-db820c.dtb > Image.gz+dtb $ touch ramdisk $ python android/system/core/mkbootimg/mkbootimg.py --kernel Image.gz+dtb --ramdisk ramdisk --pagesize 4096 --base 0x80000000 --kernel_offset 0x8000 --ramdisk_offset 0x1000000 --tags_offset 0x100 --cmdline 'console=ttyMSM0,115200n8 root=/dev/sda1 net.ifnames=0 init=/lib/systemd/systemd ro rootwait rng_core.default_quality=700 panic=-1 fixrtc earlyprintk earlycon=msm_serial_dm,0x75b0000' --output bionic-snapdragon-db820c-boot.img - 3) fastboot the board using the freshly generated boot.img: + 3) boot the board using the generated boot.img: $ fastboot boot bionic-snapdragon-db820c-boot.img Regression potential: - With new code there's always a degree of regression potential, but all - patches (but one) were cherry-picked from Linus's upstream tree, and the - only external one, came direclty from the qcom-lt 4.14 tree. + With new code there's always a degree of regression potential, but all patches + (but one) came from Linus's upstream tree, and the only external one, came + direclty from the qcom-lt 4.14 tree. - 1: - https://www.96boards.org/documentation/consumer/dragonboard/dragonboard820c/installation - /board-recovery.md.html + 1: https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/log/?h=release/qcomlt-4.14 + 2: https://www.96boards.org/documentation/consumer/dragonboard/dragonboard820c/installation/board-recovery.md.html
** Description changed: Impact: - Altough the Bionic/snapdragon kernel contains the BSP from the Qualcomm landing - tree kernel[1], it didn't work on Snapdragon 820 based board (e.g. Qualcomm - DB820C APQ8096). + Altough the Bionic/snapdragon kernel contains the BSP from the Qualcomm + landing tree kernel[1], it didn't work on Snapdragon 820 based board + (e.g. Qualcomm DB820C APQ8096). Fix: Import the necessary patches to make it boot on such board (and clones). How to test: 1) put the board in fastboot mode (see [2]) 2) generate a compatible boot.img: $ cat linux/arch/arm64/boot/Image.gz linux/arch/arm64/boot/dts/qcom/apq8096-db820c.dtb > Image.gz+dtb $ touch ramdisk $ python android/system/core/mkbootimg/mkbootimg.py --kernel Image.gz+dtb --ramdisk ramdisk --pagesize 4096 --base 0x80000000 --kernel_offset 0x8000 --ramdisk_offset 0x1000000 --tags_offset 0x100 --cmdline 'console=ttyMSM0,115200n8 root=/dev/sda1 net.ifnames=0 init=/lib/systemd/systemd ro rootwait rng_core.default_quality=700 panic=-1 fixrtc earlyprintk earlycon=msm_serial_dm,0x75b0000' --output bionic-snapdragon-db820c-boot.img 3) boot the board using the generated boot.img: $ fastboot boot bionic-snapdragon-db820c-boot.img Regression potential: - With new code there's always a degree of regression potential, but all patches - (but one) came from Linus's upstream tree, and the only external one, came - direclty from the qcom-lt 4.14 tree. + With new code there's always a degree of regression potential, but all + patches (but one) came from Linus's upstream tree, and the only external + one, came direclty from the qcom-lt 4.14 tree. 1: https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/log/?h=release/qcomlt-4.14 2: https://www.96boards.org/documentation/consumer/dragonboard/dragonboard820c/installation/board-recovery.md.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-snapdragon in Ubuntu. https://bugs.launchpad.net/bugs/1832012 Title: Initial support for Qualcomm Snapdragon 820 chipset Status in linux-snapdragon package in Ubuntu: New Bug description: Impact: Although the Bionic/snapdragon kernel contains the BSP from the Qualcomm landing tree kernel[1], it didn't work on Snapdragon 820 based board (e.g. Qualcomm DB820C APQ8096). Fix: Import the necessary patches to make it boot on such a board (and clones). How to test: 1) put the board in fastboot mode (see [2]) 2) generate a compatible boot.img: $ cat linux/arch/arm64/boot/Image.gz linux/arch/arm64/boot/dts/qcom/apq8096-db820c.dtb > Image.gz+dtb $ touch ramdisk $ python android/system/core/mkbootimg/mkbootimg.py --kernel Image.gz+dtb --ramdisk ramdisk --pagesize 4096 --base 0x80000000 --kernel_offset 0x8000 --ramdisk_offset 0x1000000 --tags_offset 0x100 --cmdline 'console=ttyMSM0,115200n8 root=/dev/sda1 net.ifnames=0 init=/lib/systemd/systemd ro rootwait rng_core.default_quality=700 panic=-1 fixrtc earlyprintk earlycon=msm_serial_dm,0x75b0000' --output bionic-snapdragon-db820c-boot.img 3) boot the board using the generated boot.img: $ fastboot boot bionic-snapdragon-db820c-boot.img Regression potential: With new code there's always a degree of regression potential, but all patches (but one) came from Linus's upstream tree, and the only external one, came direclty from the qcom-lt 4.14 tree. 1: https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/log/?h=release/qcomlt-4.14 2: https://www.96boards.org/documentation/consumer/dragonboard/dragonboard820c/installation/board-recovery.md.html To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-snapdragon/+bug/1832012/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
