peakrdl-rawheader 0.2.5

Generate Header files from a SystemRDL register model

PeakRDL Raw Header

Generates a very basic header with addresses, sizes, and offsets from a SystemRDL file as a plugin to PeakRDL.

Currently supported formats:

Format	Function
c	Simple C header file
svh	Simple SystemVerilog header file
svpkg	Simple SystemVerilog package
ldh	Linker script header (MEMORY + PROVIDE symbols)

Custom templates are also supported.

Installation

You can install the package via pip:

pip install peakrdl-rawheader

Or add it as a dependency in your pyproject.toml or requirements.txt e.g. with uv:

uv add peakrdl-rawheader

Usage

Example

Given the following SystemRDL input:

addrmap top {
    enum state {
        IDLE = 0;
        BUSY = 1;
    };

    reg status_reg {
        field {
            encode = state;
        } fld;
    };

    status_reg status[2];
};

The generated output will look like this:

C Header (c)

#define TOP_STATUS_BASE_ADDR(status_idx) (0x00000000 + (status_idx * 0x00000004))
#define TOP_STATUS_NUM 0x00000002
// ...
#define state__IDLE 0
#define state__BUSY 1

SystemVerilog Header (svh)

`define TOP_STATUS_BASE_ADDR(status_idx) (64'h0 + (status_idx * 64'h4))
`define TOP_STATUS_NUM 64'h2
// ...
`define STATE__IDLE 0
`define STATE__BUSY 1

SystemVerilog Package (svpkg)

function automatic longint unsigned TOP_STATUS_BASE_ADDR(input int unsigned status_idx);
    return 64'h0 + (status_idx * 64'h4);
endfunction
// ...
typedef enum logic [0:0] {
    IDLE = 1'd0,
    BUSY = 1'd1
} state_e;

Linker Header (ldh)

/* Memories */
MEMORY {
  top_array_0 (rw) : ORIGIN = 0x70000000, LENGTH = 0x00100000
  top_imem (rx) : ORIGIN = 0x00000000, LENGTH = 0x00001000
}

/* Registers */
PROVIDE(__top_status_0_base_addr__ = 0x00000000);
PROVIDE(__top_status_1_base_addr__ = 0x00000004);
PROVIDE(__top_status_num__ = 0x00000002);
PROVIDE(__top_status_stride__ = 0x00000004);

ldh supports selectively disabling either section:

• --ldh-no-memory: skip MEMORY { ... } region emission
• --ldh-no-symbols: skip PROVIDE(...) symbol emission

MEMORY attributes are derived from memory properties:

• sw controls r/w
• user-defined boolean executable controls x

Example UDP declaration in SystemRDL:

property executable {
  component = mem;
  type = boolean;
};

Releasing

Release instructions are documented in RELEASE.md.