So I checked out the latest Ubuntu kernel (based on 4.12.8) and enabled the options as mentioned above, which leads to the (attached) diff against the config grabbed from here: http://kernel.ubuntu.com/~kernel-ppa/config/artful/linux/4.12.0-12.13/arm64-config.flavour.generic
These options should comply with the Ubuntu .config rules as I understand them (=m whenever possible), but require an initramfs to boot (from SD card). Compiling in CONFIG_MMC_SUNXI and CONFIG_REGULATOR_FIXED_VOLTAGE allow to access the rootfs without modules (handy for bootstrapping). ** Patch added: ".config diff to enable Allwinner arm64 support" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1701137/+attachment/4936707/+files/ubuntu_config_sunxi.diff ** Changed in: linux (Ubuntu Artful) Status: Incomplete => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1701137 Title: enable ARCH_SUNXI (and friends) in arm64 kernel .config Status in linux package in Ubuntu: In Progress Status in linux source package in Artful: In Progress Bug description: The mainline support for the ARM64 Allwinner SoCs (featured on the Pine64 boards and the Pinebook notebook, for instance, as well as other development boards like the BananaPi-M64) has come a long way by now, since 4.11 we have MMC and USB support working. Now can we just enable the proper .config bits to make the official Ubuntu kernel support those boards? The latest mainline U-Boot can load an EFI grub from some UEFI ESP partition, so any standard EFI installer should work. Apart from some minor hiccup (a missing MBR bootable flag/MBR at all) this works already with the Debian-testing netinst installer. The config symbols needed for decent support are (all enabled by the latest Debian kernel and the official mainline defconfig): ARCH_SUNXI=y CONFIG_USB_MUSB_SUNXI=m CONFIG_MMC_SUNXI=m CONFIG_RTC_DRV_SUN6I=y CONFIG_PHY_SUN4I_USB=y Those enable MMC and USB (the mandatory clocks, pinctrl and UART are enabled by default) and make those boards quite usable already. The on-SoC Ethernet driver will probably be merged into 4.13-rc1. Optionally: CONFIG_I2C_MV64XXX=m CONFIG_SPI_SUN6I=m give us I2C and SPI support as well. So can we add those symbols to the Ubuntu kernel .config to give users an out-of-the-box experience? Cheers, Andre. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1701137/+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
