VCT enclustra BSP startup

The upstream Yocto build metadata mimics the (original) Altera/Intel socfpga layers, but since it is a Brand New first release, it uses the mickledore branches and a KAS build configuration.

Tox workflows

Tox automation and virtual environment management is the basis for dev workflow standardization and repeatability. For a more "general" tutorial on Tox automation, see the following YouTube video Automating Build, Test and Release Workflows with tox.

For more info see the additional readme doc: README_workflows.rst

Old quick start steps:

• cd somewhere
• clone this repo - default branch is now oe-mickledore
• cd repo/
• create .venv with tox -e dev
• view/edit the KAS configuration file layers/meta-user-aa1/kas/*.yaml

Defaults are now the custom machine and user layer image, along with qspi as default build config. User build knobs include:

1. the desired machine key, eg: me-aa1-270-2i2-d11e-nfx3
2. the UBOOT_CONFIG env key setting for build cfg and boot media

• check the contents of build/local.conf and build/bblayers.conf and adjust as needed
• run tox -e qspi to build the minimal devel image

Run KAS directly without Tox

1. create a Python virtual environment in this checkout, activate it, and install kas:

$ python -m venv .venv
$ source .venv/bin/activate
(.venv) $ python -m pip install kas

2. clone the "user" layer (where the new kas base.yaml lives):

(.venv) $ mkdir layers && cd layers/
(.venv) $ git clone https://github.com/VCTLabs/meta-user-aa1.git -b oe-mickledore
(.venv) $ cd -

3. view/edit the kas file layers/meta-user-aa1/kas/base.yaml and check/set the desired value for the UBOOT_CONFIG key
4. fetch the required metadata layers and build default qspi devel image:

(.venv) $ kas checkout layers/meta-user-aa1/kas/sysvinit.yaml
(.venv) $ kas build layers/meta-user-aa1/kas/sysvinit.yaml

The first command in step 4 above will populate the layers folder with the cloned layers and create a build folder creatively named build.

By default all of the downloaded sources and locally created sstate cache files are also in the build folder but can be relocated to a more convenient/shared location by using some environment variables as shown below; set them before running the build command:

(.venv) $ export DL_DIR="${HOME}/shared/downloads"
(.venv) $ export SSTATE_DIR="${HOME}/shared/oe/sstate-cache"

Note

You may need to create the above directories manually before starting a new build.

The (yocto) build config files can be found in the usual place in the build folder, ie:

(.venv) $ ls build/conf/
bblayers.conf  local.conf  templateconf.cfg

Note that changes made to the config files inside build/conf/ are only temporary as Kas treats everything in the build folder as transitory. Any changes you wish to keep should be migrated to a Kas config file.

Important

Do not delete the build folder to start a fresh build, rather do remove build/tmp-glibc for that very purpose.

The initial build must fetch and build a large number of components, including several very large git repositories, so the first build can take several hours.

When finished, check the results:

(.venv) $ ls -1 build/tmp-glibc/deploy/images/<machine>/
bitstream.core.rbf
bitstream.itb
bitstream.periph.rbf
boot-emmc.scr
boot-qspi.scr
boot-sdmmc.scr
boot.scr
devicetree
devicetree.dtb
fit_spl_fpga.itb
handoff
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.rootfs.cpio.gz.u-boot
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.rootfs.manifest
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.rootfs.tar.gz
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.rootfs.wic
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.rootfs.wic.bmap
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.testdata.json
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1.cpio.gz.u-boot
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1.manifest
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1.tar.gz
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1.testdata.json
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1.wic
image-minimal-refdes-refdes-me-aa1-270-2i2-d11e-nfx3-st1.wic.bmap
image-minimal-refdes.env
modules--6.1.38-lts+git0+21b5300ed5-r0-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.tgz
modules-refdes-me-aa1-270-2i2-d11e-nfx3-st1.tgz
socfpga_enclustra_mercury_emmc_overlay.dtbo
socfpga_enclustra_mercury_qspi_overlay.dtbo
socfpga_enclustra_mercury_sdmmc_overlay.dtbo
u-boot-refdes-me-aa1-270-2i2-d11e-nfx3-st1.sfp
u-boot-refdes-me-aa1-270-2i2-d11e-nfx3-st1.sfp-sdmmc
u-boot-sdmmc-v2023.01+gitAUTOINC+0fa4e757b5-r0.sfp
u-boot-socfpga-initial-env-refdes-me-aa1-270-2i2-d11e-nfx3-st1-sdmmc
u-boot-socfpga-initial-env-refdes-me-aa1-270-2i2-d11e-nfx3-st1-sdmmc-v2023.01+gitAUTOINC+0fa4e757b5-r0
u-boot-socfpga-initial-env-sdmmc
u-boot-splx4.sfp
u-boot-splx4.sfp-refdes-me-aa1-270-2i2-d11e-nfx3-st1
u-boot-splx4.sfp-refdes-me-aa1-270-2i2-d11e-nfx3-st1-sdmmc
u-boot-splx4.sfp-sdmmc
u-boot-splx4.sfp-sdmmc-v2023.01+gitAUTOINC+0fa4e757b5-r0
u-boot.img
u-boot.img-sdmmc
uImage
uImage--6.1.38-lts+git0+21b5300ed5-r0-refdes-me-aa1-270-2i2-d11e-nfx3-st1-20240808203438.bin
uImage-refdes-me-aa1-270-2i2-d11e-nfx3-st1.bin

Since it already has all of the important bits, the main file(s) of interest in the listing above are the files ending in *.wic[.bmap] which are "raw" disk images used to flash MMC devices. Use these to create a bootable SDCard or USB stick.

Many of the above are symlinks, but mainly there should be some obvious file types:

• yocto build image files
• FPGA bitstream files
• kernel image, modules, and device tree files
• u-boot image, boot script, and env files
• the handoff directory

The latter directory includes the Quartus project integration "glue" required to build the full sysem images. See the README.socfpga file in the U-boot source tree for the handoff "bridge" manual process description.

Notes on Enclustra BSP for Cyclone/Arria FPGA HW

meta-enclustra-socfpga has one branch: v2023.1

• https://github.com/enclustra/meta-enclustra-socfpga

Contains two meta-layers:

• meta-enclustra-module - BSP layer for enclustra
• meta-enclustra-refdes - reference designs using enclustra BSP

The top-level readme is not boiler-plate, but contains changelog and integration bits, some of which are shown below:

• Yocto branch: mickledore
• U-Boot: 2023.01
• Linux kernel: 6.1.0

based on meta-intel-fpga: https://git.yoctoproject.org/meta-intel-fpga

Supported Devices

Family	Module , Revision	Base Boards
Intel Cyclone V	Mercury SA1 , R3	Mercury+ PE1 / Mercury+ PE3 / Mercury+ ST1
Intel Cyclone V	Mercury+ SA2 , R1	Mercury+ PE1 / Mercury+ PE3 / Mercury+ ST1
Intel Arria 10	Mercury+ AA1 , R2	Mercury+ PE1 / Mercury+ PE3 / Mercury+ ST1

Reference Designs for Intel Quartus II

The meta-enclustra-refdes Yocto layer in this reference design uses prebuilt binaries for the following reference designs:

• Mercury+ AA1 PE1 Reference Design https://github.com/enclustra/Mercury_AA1_PE1_Reference_Design
• Mercury+ AA1 PE3 Reference Design https://github.com/enclustra/Mercury_AA1_PE3_Reference_Design
• Mercury+ AA1 ST1 Reference Design https://github.com/enclustra/Mercury_AA1_ST1_Reference_Design
• Mercury SA1 PE1 Reference Design https://github.com/enclustra/Mercury_SA1_PE1_Reference_Design
• Mercury SA1 PE3 Reference Design https://github.com/enclustra/Mercury_SA1_PE3_Reference_Design
• Mercury SA1 ST1 Reference Design https://github.com/enclustra/Mercury_SA1_ST1_Reference_Design
• Mercury+ SA2 PE1 Reference Design https://github.com/enclustra/Mercury_SA2_PE1_Reference_Design
• Mercury+ SA2 PE3 Reference Design https://github.com/enclustra/Mercury_SA2_PE3_Reference_Design
• Mercury+ SA2 ST1 Reference Design https://github.com/enclustra/Mercury_SA2_ST1_Reference_Design

Host Requirements

Host Operating System:

This reference design build was tested on following operating systems:

• Ubuntu 22.04

Required Packages:

The following packages are required for building this reference design on Ubuntu:

gawk wget git diffstat unzip texinfo gcc build-essential chrpath socat cpio python3 python3-pip python3-pexpect xz-utils debianutils iputils-ping python3-git python3-jinja2 libegl1-mesa libsdl1.2-dev pylint3 xterm python3-subunit mesa-common-dev zstd liblz4-tool libyaml-dev libelf-dev python3-distutils