readme.txt 1.2 KB

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  1. /*
  2. * The FreeRTOS kernel's RISC-V port is split between the the code that is
  3. * common across all currently supported RISC-V chips (implementations of the
  4. * RISC-V ISA), and code that tailors the port to a specific RISC-V chip:
  5. *
  6. * + FreeRTOS\Source\portable\GCC\RISC-V-RV32\portASM.S contains the code that
  7. * is common to all currently supported RISC-V chips. There is only one
  8. * portASM.S file because the same file is built for all RISC-V target chips.
  9. *
  10. * + Header files called freertos_risc_v_chip_specific_extensions.h contain the
  11. * code that tailors the FreeRTOS kernel's RISC-V port to a specific RISC-V
  12. * chip. There are multiple freertos_risc_v_chip_specific_extensions.h files
  13. * as there are multiple RISC-V chip implementations.
  14. *
  15. * !!!NOTE!!!
  16. * TAKE CARE TO INCLUDE THE CORRECT freertos_risc_v_chip_specific_extensions.h
  17. * HEADER FILE FOR THE CHIP IN USE. This is done using the assembler's (not the
  18. * compiler's!) include path. For example, if the chip in use includes a core
  19. * local interrupter (CLINT) and does not include any chip specific register
  20. * extensions then add the path below to the assembler's include path:
  21. * FreeRTOS\Source\portable\GCC\RISC-V-RV32\chip_specific_extensions\RV32I_CLINT_no_extensions
  22. *
  23. */