U-Boot Failure using Terasic Ubuntu Image - U-Boot Failure using Terasic Ubuntu Image Hello, I'm opening a new thread to make a new question, but I think this is quite related to my prior question. I'm trying to use Ubuntu OS at DE1-SoC board, through HPS. So I tried to use the image from Terasic download center ( https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=836&PartNo=4 ) and it worked for me for the last few months. However recently, I cannot boot the device properly so I tried to use the zImage file from gsrd ( https://releases.rocketboards.org/release/2020.07/gsrd/cv_gsrd/ ) and that worked for me, just for running OS. Using the zImage from gsrd, the C program containing altera functions failed with freezing and I made another thread for the case above. So my question is... 1) Is there any possible reason why the FPGA using the image from Terasic fails to boot? 2) I found that the image from gsrd does not contain arm-linux-gnueabihf-gcc command, which is a compiler. Should I rebuild the kernel to contain a such compiler within the OS? Thank you for reading these discursive questions. Replies: Re: U-Boot Failure using Terasic Ubuntu Image Hello 서박사 , I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you. Replies: Re: U-Boot Failure using Terasic Ubuntu Image Hello 서박사 , I think that your problem has been fixed. According to the another thread( Re:ALTERA function fails after execution at C program ), your Linux was booted. So I will close this thread if no further questions from you. Best regards, Yoshiaki Saito Replies: Re: U-Boot Failure using Terasic Ubuntu Image Hello Yoshiaki! Thank you for the prompt answer. I've tried to replace DTB file from GHRD and I think it worked for me to boot the device. Also, replacing zImage file from GHRD also worked. However, although the device has been booted successfully, I cannot run any program using Altera function. I've opened an individual thread for this issue a few days ago, so I would not ask you for the aforementioned issue here. I'm still confused why the DTB file from the reference image ( https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=836&PartNo=4 ) is wrong. For this, is there any method to check if the DTB file is "proper"? (I don't think DTB and zImage are related to each other, but DTB and .rbf file are related together) Replies: Re: U-Boot Failure using Terasic Ubuntu Image Hello 서박 사 , I have been similar experience with wrong DTB. Please check DTS(DTB) first. Best regards, Yoshiaki Saito Replies: Re: U-Boot Failure using Terasic Ubuntu Image Hello Yoshiaki, Thank you for your prompt response. For the booting log, please refer to the following logs: U-Boot SPL 2013.01.01 (Oct 12 2016 - 10:38:03) BOARD : Altera SOCFPGA Cyclone V Board CLOCK: EOSC1 clock 25000 KHz CLOCK: EOSC2 clock 25000 KHz CLOCK: F2S_SDR_REF clock 0 KHz CLOCK: F2S_PER_REF clock 0 KHz CLOCK: MPU clock 925 MHz CLOCK: DDR clock 400 MHz CLOCK: UART clock 100000 KHz CLOCK: MMC clock 50000 KHz CLOCK: QSPI clock 3613 KHz RESET: COLD INFO : Watchdog enabled SDRAM: Initializing MMR registers SDRAM: Calibrating PHY SEQ.C: Preparing to start memory calibration SEQ.C: CALIBRATION PASSED SDRAM: 1024 MiB ALTERA DWMMC: 0 U-Boot 2013.01.01 (Oct 12 2016 - 10:40:34) CPU : Altera SOCFPGA Platform BOARD : Altera SOCFPGA Cyclone V Board I2C: ready DRAM: 1 GiB MMC: ALTERA DWMMC: 0 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Skipped ethaddr assignment due to invalid EMAC address in EEPROM Net: mii0 Warning: failed to set MAC address Hit any key to stop autoboot: 0 reading u-boot.scr 200 bytes read in 4 ms (48.8 KiB/s) ## Executing script at 02000000 reading soc_system.rbf 7007184 bytes read in 327 ms (20.4 MiB/s) ## Starting application at 0x3FF795A4 ... ## Application terminated, rc = 0x0 reading zImage 5538512 bytes read in 257 ms (20.6 MiB/s) reading socfpga.dtb 31245 bytes read in 6 ms (5 MiB/s) ## Flattened Device Tree blob at 00000100 Booting using the fdt blob at 0x00000100 reserving fdt memory region: addr=0 size=1000 Loading Device Tree to 03ff5000, end 03fffa0c ... OK Starting kernel ... This log has been gathered from the terminal through serial communication. After printing "Starting kernel...", the terminal does not respond anymore. However, I think that these logs are not sufficient to find the issue... Thank you! Replies: Re: U-Boot Failure using Terasic Ubuntu Image Hello 서박사, Please see my answer below. Q1) Is there any possible reason why the FPGA using the image from Terasic fails to boot? A1) Did you try the following image on new SD-CARD? https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=836&PartNo=4 Could you please share the boot log with us? Q2) I found that the image from gsrd does not contain arm-linux-gnueabihf-gcc command, which is a compiler. Should I rebuild the kernel to contain a such compiler within the OS? A2) You need to rebuild the root file system including many tools. But we recommend to compile a software on host PC using the cross compiler because SD-CARD is not highly durable basically. If you still want to compile a software on target OS, you should choose high grade SD-CARD. Best regards, Yoshiaki Saito