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This is a minimal MicroBlaze based system that can boot Linux and is fully ready for integration into Xilinx Petalinux. This design will be provided for all Modules that can support it (except ZYNQ based ones). Primary requirement is external memory (32MByte or more). This design does fit into any 7 Series FPGA except Artix A15T.

List of supported modules

  • TE0710
  • TE0712
  • TE0713

The goal for this minimal Linux system is to provide standard hardware that can be used with same software images without the need to recompile or customize them.

IP CoreBase addressInterruptBoard Part InterfaceNotes
MicroBlaze   Configured with low end Linux option
MIG0x8000_0000 DDR3_SDRAMConfigured as per Module settings
LMB_RAM0x0000_0000  For FS-BOOT, 8K minimum size
MDM n/a Configured without JTAG UART
AXI_TIMER0x41C0_00000 32 bit mode Dual Channel Mode
AXI_UARTLITE0x4060_00001BASE_UART0Configured with 115200 baud
AXI_QUAD_SPI0x44A0_00002QSPI_FLASHConnected to on-board Flash, standard mode
AXI_GPIO0x4000_0000not usedSYS_GPIO 


Minimal Linux capable System Block Diagram.

It is possible to use same unmodified fs-boot.elf, u-boot-s.bin and image.ub as long as the hardware matches the requirements.


This Design is based on min_linux further reducing the peripherals and functions: Debug and GPIO are removed. This design does fit into any Xilinx 7 series FPGA including A15T. On A15T device the design takes almost all logic resources, adding one more AXI peripheral would most likely go over 100% utilization. It is provided just show the utilization of the bare-minimal Microblaze-MMU system capable to run full Linux.

FPGASlice used %FF used %



This Design is based on min_linux, adding AXI_Ethernetlite IP Core.

IP CoreBase addressInterruptBoard Part InterfaceNotes
AXI_Ethernetlite0x40E0_0000  3 sys_etherneton TE0710 is connectd to MII, on TE0712 ist connected with the core "MII to RMII" to RMII



TE0710 uses MII Interface



TE0712 uses RMII Interface



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