Why does Agilex® 5 FPGA fail to boot Linux* from eMMC when using the ATF-to-Linux direct boot flow in the 26.1 release? - Why does Agilex® 5 FPGA fail to boot Linux* from eMMC when using the ATF-to-Linux direct boot flow in the 26.1 release? Description Due to an issue with the SDRAM memory configuration in the Linux device tree, the Agilex® 5 FPGA HPS fails to boot Linux* from eMMC when using the ATF-to-Linux direct boot flow in the 26.1 release (Linux branch socfpga-6.18.2-lts). This issue is not observed in the U-Boot–to-Linux boot flow, as U-Boot patches the Linux device tree with the correct memory configuration. In the ATF-to-Linux direct boot flow, ATF does not perform this patching; therefore, the memory configuration must be correctly defined in the device tree. Resolution To work around this issue, the Linux device tree used for booting from eMMC in the ATF-to-Linux direct boot flow must be updated with the correct memory configuration. For the Premium Development Kit (ES and production), this requires updating the file arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_emmc_atfboot.dts with the following fix: memory { device_type = "memory"; reg = <0 0x80000000 0 0x80000000>; }; Refer to the following build instructions for the workaround implementation: PDK 065B ES PDK 065B PDK 065A This problem is scheduled to be fixed in a future release of the Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting ES-375 novalue ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 26.1 ['Agilex™ 5 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']