[Buildroot] [PATCH 2/2] Add configs/zynqmp_zcu102_defconfig

[Giulio Benetti]

Hi Neal,

On 04/02/22 08:09, Neal Frager wrote:
> Hi Giulio,
> 
>> Hi Neal,
> 
>> can you please improve commit log doing a presentation of what is zynqmp_zcu102?
> 
>> Is this for thi boards
>> https://www.xilinx.com/products/boards-and-kits/ek-u1-zcu102-g.html ?
> 
>> If yes please describe its features and point the url at the end of commit log.
> 
> Yes, no problem.  I will add the url that describes the board to the commit log.
> 
> On 03/02/22 14:44, Neal Frager wrote:
>> Signed-off-by: Neal Frager <neal.frager at xilinx.com>
>> ---
>>    configs/zynqmp_zcu102_defconfig | 34 +++++++++++++++++++++++++++++++++
>>    1 file changed, 34 insertions(+)
>>    create mode 100644 configs/zynqmp_zcu102_defconfig
>>
>> diff --git a/configs/zynqmp_zcu102_defconfig
>> b/configs/zynqmp_zcu102_defconfig new file mode 100644 index
>> 0000000000..5f98e72aaf
>> --- /dev/null
>> +++ b/configs/zynqmp_zcu102_defconfig
>> @@ -0,0 +1,34 @@
>> +BR2_aarch64=y
>> +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=y
>> +BR2_ROOTFS_POST_IMAGE_SCRIPT="board/zynqmp/post-image.sh"
>> +BR2_LINUX_KERNEL=y
>> +BR2_LINUX_KERNEL_CUSTOM_GIT=y
>> +BR2_LINUX_KERNEL_CUSTOM_REPO_URL="git://github.com/Xilinx/linux-xlnx.git"
>> +BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="xlnx_rebase_v5.10_2021.2"
>> +BR2_LINUX_KERNEL_DEFCONFIG="xilinx_zynqmp"
>> +BR2_LINUX_KERNEL_DTS_SUPPORT=y
>> +BR2_LINUX_KERNEL_INTREE_DTS_NAME="xilinx/zynqmp-zcu102-rev1.0"
> 
>> Here you need also:
>> BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
> 
> Thanks for making me aware of this.  I will add it to both defconfigs.
> 
>> +BR2_TARGET_ROOTFS_EXT2=y
>> +BR2_TARGET_ROOTFS_EXT2_4=y
>> +# BR2_TARGET_ROOTFS_TAR is not set
>> +BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
>> +BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_GIT=y
>> +BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_REPO_URL="https://github.com/ARM-software/arm-trusted-firmware.git"
>> +BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_REPO_VERSION="v2.4"
>> +BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="zynqmp"
>> +BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31_UBOOT=y
>> +BR2_TARGET_UBOOT=y
>> +BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
>> +BR2_TARGET_UBOOT_CUSTOM_GIT=y
>> +BR2_TARGET_UBOOT_CUSTOM_REPO_URL="git://github.com/xilinx/u-boot-xlnx.git"
>> +BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="xlnx_rebase_v2021.01_2021.2"
>> +BR2_TARGET_UBOOT_BOARD_DEFCONFIG="xilinx_zynqmp_virt"
>> +BR2_TARGET_UBOOT_NEEDS_DTC=y
>> +BR2_TARGET_UBOOT_SPL=y
>> +BR2_TARGET_UBOOT_SPL_NAME="spl/boot.bin"
>> +BR2_TARGET_UBOOT_ZYNQMP=y
>> +BR2_TARGET_UBOOT_ZYNQMP_PMUFW="https://github.com/lucaceresoli/zynqmp-pmufw-binaries/raw/2021.2/bin/pmufw-v2021.2.bin"
> 
>> This ^^^ URL is unreachable and I've found this as substitution:
>> https://github.com/lucaceresoli/zynqmp-pmufw-binaries/blob/v2021.2/bin/pmufw-v2021.2.bin
> 
>> Luca, is that the correct one? I've switched to v2021.2 tag and copied the link.
> 
> Sorry about this one.  I was balancing a couple too many versions of my defconfig files and this typo slipped through the cracks.  I have corrected it in both defconfigs for the next version of the patch.
> 
>> +BR2_TARGET_UBOOT_FORMAT_ITB=y
>> +BR2_PACKAGE_HOST_DOSFSTOOLS=y
>> +BR2_PACKAGE_HOST_GENIMAGE=y
>> +BR2_PACKAGE_HOST_MTOOLS=y
> 
>> I've built with gitlab-CI, check this patch for the manual to reproduce:
>> https://patchwork.ozlabs.org/project/buildroot/patch/20220203235438.610277-1-giulio.benetti@benettiengineering.com/
> 
>> BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y came out using the docker.
> 
>> Can anyone test it on real hardware? Luca maybe?
> 
> Regarding the board test, there is one thing still missing.  U-Boot 2021.01 uses distro boot, so for U-Boot to properly boot the Linux kernel and rootfs, a boot.scr file needs to be in the boot partition of the SD card.  I have been getting it to work by manually adding this file to the SD card image after the build.  But a better way would be that this file is already included with the genimage.cfg.  How does buildroot typically handle U-Boot boot.scr files?  I would be happy to add this to the automated build process, but I do not wish to re-invent the wheel.

Lately a lot of extlinux.conf has been used instead of boot.scr, so you 
could go for something like this:
https://git.buildroot.net/buildroot/tree/board/stmicroelectronics/stm32mp157c-dk2/overlay/boot/extlinux/extlinux.conf

and point to it in board defconfig.

Best regards
-- 
Giulio Benetti
Benetti Engineering sas