Altera 是一家FPGA製造商。SoC FPGA被稱為HPS（Hard Processor System）。這些元件結合了FPGA的靈活性和處理器的計算能力，適用於各種應用，例如嵌入式系統、物聯網、視覺處理等。以下章節能讓您快速體驗Altera Cyclone V SOC設計平台。

Cyclone V Soc Development kit

Quartus Standard 22.1

Golden Hardware Reference Design(Rocket Board)

Linux Ubuntu 20.04

1. 硬體設計
2. 環境建立
3. 軟體執行

1.1 下載GSRD

Rocket Board：

https://www.rocketboards.org/foswiki/Documentation/CycloneVSoCGSRD

Altera：

Cyclone V SOC kit installation

https://www.intel.com/content/www/us/en/products/details/fpga/development-kits/cyclone/v-sx.html

1.2  透過Quartus std 22.1開啟

開啟GSRD Project

/cycloneV/kits/golden_system_ref_design/hardware

包含Quartus project 以及SOC Image file

2.1  製作u-boot

下載並設定 Cyclone V SoC 所需的工具鏈

wget https://developer.arm.com/-/media/Files/downloads/gnu/11.2-2022.02/binrel/gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tar.xz

tar xf gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tar.xz

rm gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tar.xz

export PATH=`pwd`/gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf/bin:$PATH

Setup & 抓取GSRD EXAMPLE

mkdir cv_example.sdmmc

cd cv_example.sdmmc

export TOP_FOLDER=`pwd`

cd $TOP_FOLDER

rm -rf  ghrd-socfpga-QPDS22.1STD_REL_GSRD_PR QPDS22.1STD_REL_GSRD_PR.zip cv_soc_devkit_ghrd

wget https://github.com/altera-opensource/ghrd-socfpga/archive/refs/tags/QPDS22.1STD_REL_GSRD_PR.zip

unzip QPDS22.1STD_REL_GSRD_PR.zip

mv ghrd-socfpga-QPDS22.1STD_REL_GSRD_PR/cv_soc_devkit_ghrd .

rm -rf  ghrd-socfpga-QPDS22.1STD_REL_GSRD_PR QPDS22.1STD_REL_GSRD_PR.zip

cd cv_soc_devkit_ghrd

rm -rf software

~/intelFPGA/22.1std/nios2eds/nios2_command_shell.sh \

make generate_from_tcl

~/intelFPGA/22.1std/nios2eds/nios2_command_shell.sh \

make sof

製作U-boot

cd $TOP_FOLDER/cv_soc_devkit

mkdir software/bootloader && cd software/bootloader

git clone https://github.com/altera-opensource/u-boot-socfpga

cd u-boot-socfpga

# comment out next line to use the latest U-Boot branch

# git checkout -b test-bootloader -t origin/socfpga_v2022.04

cd $TOP_FOLDER/cv_soc_devkit_ghrd/software/bootloader/u-boot-socfpga/arch/arm/mach-socfpga/cv_bsp_generator

python3 cv_bsp_generator.py -i $TOP_FOLDER/cv_soc_devkit_ghrd/hps_isw_handoff/soc_system_hps_0 \

-o ../../../../board/altera/cyclone5-socdk/qts

cd $TOP_FOLDER/cv_soc_devkit_ghrd/software/bootloader/u-boot-socfpga

export CROSS_COMPILE=arm-none-linux-gnueabihf-

make socfpga_cyclone5_defconfig

make -j 48

最後產生以下檔案

…/cv_soc_devkit_ghrd/software/bootloader/u-boot-socfpga

Spl/u-boot-spl    ：SPL ELF executable

u-boot          ：U-Boot ELF executable

u-boot-with-spl.sfp：Bootable file: four copies of SPL and one copy on U-Boot image

2.2  建置二進位文件

建立資料夾

rm -rf linux-bin && mkdir linux-bin

export set LINUX_BIN=`pwd`/linux-bin

mkdir -p $LINUX_BIN/a9

建立Linux Kernel

rm -rf linux && mkdir linux

export set LINUX_TOP=`pwd`/linux

cd $LINUX_TOP

export ARCH=arm

export CROSS_COMPILE=arm-none-linux-gnueabihf-

cd $LINUX_TOP

git clone https://github.com/altera-opensource/linux-socfpga linux-socfpga.a9

cd linux-socfpga.a9

git checkout -b scarthgap -t origin/socfpga-5.15.50-lts

make socfpga_defconfig

make -j 48 zImage Image dtbs modules

make -j 48 modules_install INSTALL_MOD_PATH=modules_install

rm -rf modules_install/lib/modules/*/build

rm -rf modules_install/lib/modules/*/source

建立連結

ln -s $LINUX_TOP/linux-socfpga.a9/arch/arm/boot/zImage $LINUX_BIN/a9/

ln -s $LINUX_TOP/linux-socfpga.a9/arch/arm/boot/Image $LINUX_BIN/a9/

ln -s $LINUX_TOP/linux-socfpga.a9/arch/arm/boot/dts/socfpga_cyclone5_socdk.dtb $LINUX_BIN/a9/

ln -s $LINUX_TOP/linux-socfpga.a9/arch/arm/boot/dts/socfpga_arria10_socdk_sdmmc.dtb $LINUX_BIN/a9/

ln -s $LINUX_TOP/linux-socfpga.a9/arch/arm/boot/dts/socfpga_arria10_socdk_qspi.dtb $LINUX_BIN/a9/

ln -s $LINUX_TOP/linux-socfpga.a9/arch/arm/boot/dts/socfpga_arria10_socdk_nand.dtb $LINUX_BIN/a9/

ln -s $LINUX_TOP/linux-socfpga.a9/modules_install/lib/modules $LINUX_BIN/a9/

產生以下檔案

…/$LINUX_BIN/a9

zImage    ：compressed kernel image

Image     ：uncompressed kernel image

socfpga_cyclone5_socdk.dtb：

cyclone v device tree blob for both sdmmc and qspi boot

modules：kernel loadable modules

建立Yocto Rootfs

sudo apt install 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

cd $LINUX_TOP

mkdir rootfs && cd rootfs

export set ROOTFS_TOP=`pwd`

cd $ROOTFS_TOP

rm -rf cv && mkdir cv && cd cv

git clone -b kirkstone https://git.yoctoproject.org/poky

git clone -b kirkstone https://git.yoctoproject.org/meta-intel-fpga

source poky/oe-init-build-env ./build

echo 'MACHINE = "cyclone5"' >> conf/local.conf

echo 'BBLAYERS += " ${TOPDIR}/../meta-intel-fpga "' >> conf/bblayers.conf

# Uncomment next line to add more packages to the image

# echo 'CORE_IMAGE_EXTRA_INSTALL += "openssh gdbserver"' >> conf/local.conf

bitbake core-image-minimal

#$ROOTFS_TOP/cv/build/tmp/deploy/images/cyclone5/core-image-minimal-cyclone5.tar.gz

產生以下檔案

core-image-minimal-cyclone5.tar.gz：Cyclone V rootfs archive

2.3  建置SD Card Image

確保以下檔案已產生完畢

zImage

socfpga_cyclone5_socdk.dtb

core-image-minimal-cyclone5.tar.gz

u-boot-with-spl.sfp

路徑建立&SD Card script

cd $TOP_FOLDER/

sudo rm -rf sd_card && mkdir sd_card && cd sd_card

wget https://releases.rocketboards.org/2021.04/gsrd/tools/make_sdimage_p3.py

chmod +x make_sdimage_p3.py

FAT Partition

cd $TOP_FOLDER/sd_card

mkdir sdfs &&  cd sdfs

cp $LINUX_BIN/a9/zImage .

cp $LINUX_BIN/a9/socfpga_cyclone5_socdk.dtb .

mkdir extlinux

echo "LABEL Linux Default" > extlinux/extlinux.conf

echo "    KERNEL ../zImage" >> extlinux/extlinux.conf

echo "    FDT ../socfpga_cyclone5_socdk.dtb" >> extlinux/extlinux.conf

echo "    APPEND root=/dev/mmcblk0p2 rw rootwait earlyprintk console=ttyS0,115200n8" >> extlinux/extlinux.conf

Rootfs Partition

cd $TOP_FOLDER/sd_card

sudo rm -rf rootfs

mkdir rootfs && cd rootfs

sudo tar xf $ROOTFS_TOP/cv/build/tmp/deploy/images/cyclone5/core-image-minimal-cyclone5.tar.gz

sudo rm -rf lib/modules/*

sudo cp -r $LINUX_BIN/a9/modules/* lib/modules

cd $TOP_FOLDER/sd_card

cp ../cv_soc_devkit_ghrd/software/bootloader/u-boot-socfpga/u-boot-with-spl.sfp .

建立SD Card image

cd $TOP_FOLDER/sd_card

sudo python3 ./make_sdimage_p3.py -f \

-P u-boot-with-spl.sfp,num=3,format=raw,size=10M,type=A2  \

-P sdfs/*,num=1,format=fat32,size=100M \

-P rootfs/*,num=2,format=ext3,size=300M \

-s 512M \

-n sdcard_cv.img

• 下載PuTTY
• 選定COM(115200)

• 開發版上電，並連接電腦
• 帳號為root無密碼
• 開機成功後輸入以下操作
  • fdisk -l   #查看分區
  • mount -t vfat /dev/mmcblk0p1 /mnt #將mmcblk0p1掛載到mnt
  • cd /mnt
  • ls
• 執行./HPS_FPGA_LED 觀看結果

總之，Altera SoC FPGA是一種結合了FPGA可編程邏輯和硬核處理器的晶片，具有高度的靈活性和性能。如果您對此有更多問題歡迎洽詢茂綸。