kumquat-buildroot/board/khadas/vim3/extlinux.conf

default buildroot
label buildroot
   kernel /Image
   devicetree /meson-g12b-a311d-khadas-vim3.dtb
append root=/dev/mmcblk0p2 rootwait console=ttyAML0,115200
configs/khadas_vim3_defconfig: new defconfig Add defconfig for the Khadas VIM3 board which uses a A311D SoC with a 4x ARM Cortex-A73 + 2x ARM Cortex-A53 big.LITTLE architecture. This defconfig includes the Linux mainline kernel version 6.3 as well as mainline uboot version 2023.04 with an in-tree .dts and uboot-defconfig. It also includes the host-tool amlogic-boot-fip which is necessary for signing the bootloader. This host tool is used in the post-image.sh script in order to generate the signed binary. This binary is then flashed to the final sdcard.img after it is generated using genimage. It is done in this way because the bootloader image needs to be flashed in 2 steps. First the first 444 bytes need to be flashed to the beginning of the sdcard.img, then we need to skip 68 bytes in the source and the destination and then write the remaining bootloader image to the sdcard.img. Ref: http://docs.khadas.com/products/sbc/vim3/development/create-bootable-tf-card Signed-off-by: Sebastian Weyer <sebastian.weyer@smile.fr> [Romain: add BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_3=y add BR2_TARGET_UBOOT_NEEDS_OPENSSL=y add BR2_PACKAGE_HOST_DOSFSTOOLS=y for genimage vfat support ] Signed-off-by: Romain Naour <romain.naour@smile.fr> 2023-05-16 17:53:10 +02:00			`default buildroot`
			`label buildroot`
			`kernel /Image`
board/khadas/vim3: add the path of the devicetree in extlinux.conf Without this patch, the devicetree used by linux at runtime is the u_boot devicetree. While using rusticl on the khadas vim3 board with the default extlinux.conf, mesa's panfrost driver return "gpu shed timeout" errors. Adding "devicetree /meson-g12b-khadas-vim3.dtb" to the extlinux.conf file solve the problem. Linux successfully boot with and without the change but without this patch the devicetree used by linux at runtime is the u-boot devicetree. The differences between the u-boot devicetree and the linux devicetree are: -The u-boot devicetree contains two more nodes than the linux devicetree. Those nodes are: - smbios : compatible option is set to "u-boot,sysinfo-smbios". - __symbols__ : present if -@ or --symbols is used during the devicetree compilation. -Most of u-boot devicetree nodes have a "phandle" property. -SoC and vpu have a "u-boot,dm-pre-reloc;" property. -Some aliases are different. -The u-boot operating points tables contains more nodes. The size difference between the u-boot devicetree and the linux devicetree is approximately 3.5kB. During runtime, the linux devicetree have the "phandle" and "u-boot,dm-pre-reloc;" properties and the smbios node. So, The runtime devicetree is the one from u-boot. Signed-off-by: Antoine Coutant <antoine.coutant@smile.fr> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> 2023-11-17 16:50:33 +01:00			`devicetree /meson-g12b-a311d-khadas-vim3.dtb`
configs/khadas_vim3_defconfig: new defconfig Add defconfig for the Khadas VIM3 board which uses a A311D SoC with a 4x ARM Cortex-A73 + 2x ARM Cortex-A53 big.LITTLE architecture. This defconfig includes the Linux mainline kernel version 6.3 as well as mainline uboot version 2023.04 with an in-tree .dts and uboot-defconfig. It also includes the host-tool amlogic-boot-fip which is necessary for signing the bootloader. This host tool is used in the post-image.sh script in order to generate the signed binary. This binary is then flashed to the final sdcard.img after it is generated using genimage. It is done in this way because the bootloader image needs to be flashed in 2 steps. First the first 444 bytes need to be flashed to the beginning of the sdcard.img, then we need to skip 68 bytes in the source and the destination and then write the remaining bootloader image to the sdcard.img. Ref: http://docs.khadas.com/products/sbc/vim3/development/create-bootable-tf-card Signed-off-by: Sebastian Weyer <sebastian.weyer@smile.fr> [Romain: add BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_3=y add BR2_TARGET_UBOOT_NEEDS_OPENSSL=y add BR2_PACKAGE_HOST_DOSFSTOOLS=y for genimage vfat support ] Signed-off-by: Romain Naour <romain.naour@smile.fr> 2023-05-16 17:53:10 +02:00			`append root=/dev/mmcblk0p2 rootwait console=ttyAML0,115200`