hpm-riscv-rt

Minimal startup/runtime for RISC-V CPUs from HPMicro.

Much of the code in this package originated in the rust-embedded/riscv repository.

How to use

Create the memory.x linker script file, then add link args.

MEMORY
{
    XPI0_HEADER : ORIGIN = 0x80000000, LENGTH = 0x3000 /* bootheader */
    XPI0_APP    : ORIGIN = 0x80003000, LENGTH = 1024K - 0x3000 /* app firmware */

    ILM        : ORIGIN = 0x00000000, LENGTH =  256K /* instruction local memory */
    DLM        : ORIGIN = 0x00080000, LENGTH =  256K /* data local memory */

    AXI_SRAM    : ORIGIN = 0x01080000, LENGTH = 1M
    AHB_SRAM    : ORIGIN = 0xF0300000, LENGTH = 32K
    APB_SRAM    : ORIGIN = 0xF40F0000, LENGTH = 8K

    SDRAM       : ORIGIN = 0x40000000, LENGTH = 32M
}


REGION_ALIAS("REGION_TEXT", XPI0_APP);
REGION_ALIAS("REGION_FASTTEXT", ILM);
REGION_ALIAS("REGION_FASTDATA", DLM);
REGION_ALIAS("REGION_RODATA", XPI0_APP);
REGION_ALIAS("REGION_DATA", DLM);
REGION_ALIAS("REGION_BSS", DLM);
REGION_ALIAS("REGION_HEAP", DLM);
REGION_ALIAS("REGION_STACK", DLM);
REGION_ALIAS("REGION_NONCACHEABLE_RAM", DLM);

Re-exported macros