This is release version 0.4.0 of Nuclei SDK.

• Application

  • Add app_demo_pmp application to demostrate pmp feature.
  • Add app_demo_spmp application to demostrate smode pmp feature, spmp is present when TEE feature is enabled.
  • Add demo_smode_eclic application to demonstrate ECLIC interrupt with TEE feature of Nuclei Processor.
  • Changed test/core test case due to EXC_Frame_Type struct member name changes.
  • Fix XS bit set bug in demo_nice application.
  • Add return value in smphello application.

• NMSIS

  • Add __CTZ count trailing zero API in core_compatiable.h
  • Add __switch_mode switch risc-v privilege mode API in core_feature_base.h
  • Add __enable_irq_s, __disable_irq_s smode irq control(on/off) API in core_feature_base.h
  • Add __set_medeleg exception delegation API in core_feature_base.h
  • Update and add smode eclic related API in core_feature_eclic.h only present when TEE_PRESENT=1
  • Optimize APIs of PMP and add __set_PMPENTRYx and __get_PMPENTRYx API for easily PMP configuration in core_feature_pmp.h
  • Add spmp related APIs for smode pmp hardware feature when __SPMP_PRESENT=1
  • Add per-hart related APIs for systimer such as SysTimer_SetHartCompareValue, SysTimer_SetHartSWIRQ and etc in core_feature_timer.h, this is mainly needed when configure timer in smode per hart
  • Add TEE related csr macros in riscv_encoding.h
  • Add iregion offset macros and N3/VP mask in riscv_encoding.h and use it in demosoc/evalsoc implementation.
  • Add ICachePresent/DCachePresent API
  • Don't sub extra cost for BENCH_xxx API
  • Update NMSIS Core/DSP/NN and prebuilt library to version 1.1.0

• Build System

  • Add intexc_<Device>_s.S asm file into compiling for evalsoc and demosoc
  • Show ARCH_EXT information when run make info
  • Don't specify elf filename when run gdb, only specify it when do load to avoid some gdb internal error
  • Add BOOT_HARTID and JTAGSN support, which need to be done in SoC support code and build system

• SoC

  • Add smode interrupt and exception handling framework for evalsoc and demosoc, for details see code changes.

    • A new section called .vector_s is added(required in linker script) to store smode vector table which is initialized in system_<Device>.c
    • A new intexc_<Device>_s.S asm source file is added to handle s-mode interrupt and exception
    • A default smode exception register and handling framework is added in system_<Device>.c
    • API Changes: Exception_DumpFrame parameters changed to add mode passing in system_<Device>.c/h
    • API Changes: EXC_Frame_Type struct member mcause/mepc changed to cause/epc in system_<Device>.c/h

  • Print \0 instead of \r when do simulation exit for better integration in Nuclei Studio QEMU simulation.

  • Add clock stub function for libncrt library in demosoc/evalsoc/gd32vf103 SoC support software.

  • Add sram download mode for evalsoc/demosoc, for details directly check the linker script

  • Change default __ICACHE_PRESENT/__DCACHE_PRESENT to 1 for evalsoc/demosoc, when evalsoc/demosoc startup, it will enable i/d cache if it really present.

  • Update openocd configuration files to remove deprecated command which might not be support in future

  • Merge smp and single core openocd config into one configuration for evalsoc and demosoc

  • Add BOOT_HARTID support for evalsoc and demosoc, which is used to specify the boot hartid, used together with SMP can support SMP or AMP run mode

  • Add JTAGSN support to specify a unified hummingbird jtag debugger via adapter serial

  • For AMP support, we can work together with Nuclei Linux SDK, see https://github.com/Nuclei-Software/nsdk_ampdemo

  • Add NPK support for SMP/AMP working mode, and sram download mode

• CI

  • Start to use Nuclei QEMU/Toolchain/OpenOCD 2022.12 in daily ci for gitlab runner

• Tools

  • Add httpserver.py tool to create a http server on selected folder, good to preview built documentation.
  • Fix many issues related to nsdk_cli scripts when integrated using fpga hardware ci flow.
  • Support extra parsing benchmark python script for nsdk_cli tools, see 5f546fa0
  • Add nsdk_runcpu.py tool to run fpga baremetal benchmark

• Documentation

  • Add make preview to preview build documentation.

Full Changelog: https://github.com/Nuclei-Software/nuclei-sdk/compare/0.3.9...0.4.0