Building U-Boot for MitySOM-A10S¶

• git://support.criticallink.com/home/git/u-boot-socfpga.git
• https://support.criticallink.com/git/u-boot-socfpga.git

• mitysom_a10

The following steps will rebuild U-Boot and the U-Boot environment for the development kit. Please note that this process expects the FPGA to already be compiled and that the it is being build with a linux computer.

1. Source the intelFPGA environment
   

   /opt/intelFPGA_pro/18.0/embedded/embedded_command_shell.sh
   

2. Change into the fpga project directory (For example A10S-P8-A5E-RC-SB)
3. Run the bsp-editor to generate the Makefile and device tree for U-Boot
   

   bsp-create-settings \
           --type uboot \
           --bsp-dir software/bootloader \
           --preloader-settings-dir "hps_isw_handoff" \
           --settings software/bootloader/settings.bsp \
           --set uboot.boot_device SDMMC \
           --set uboot.rbf_filename mitysom_a10s.periph.rbf \
           --set uboot.core_rbf_filename "" \
           --set uboot.peripheral_rbf_filename "" \
           --set uboot.model "MitySOM-A10S" 
   

4. Download the U-Boot source from Critical Link
   

   git archive --format=tar.gz --prefix=uboot-socfpga/ --remote=git://support.criticallink.com/home/git/u-boot-socfpga.git mitysom_a10 > software/bootloader/uboot-socfpga.tar.gz
   

5. Build U-Boot
   

   make -C software/bootloader TGZ=uboot-socfpga.tar.gz SOCFPGA_BOARD_CONFIG=mitysom_a10s_dsc_defconfig
   

6. The U-Boot binary will be located in: software/bootloader/uboot_w_dtb-mkpimage.bin
7. Build the u-boot environment
   

   software/bootloader/uboot-socfpga/tools/mkenvimage -s 4096 -o ubootenv.bin ubootenv.txt
   

8. The U-Boot environment binary will be called ubootenv.bin