Module ports

Expand description

The kernel’s ports: the same as ubft_new’s ubft kernel, so the Vitis link (config.cfg) connects rhdl_ubft where ubft_new’s kernel was.

Port	Kind	ubft_new	Here
`input`	AXI4-Stream in, 64 bits	`hls::stream<ProposedValue>`	`Axis64`
`output`, `remoteUpdate`	AXI4-Stream out, 256 bits	`hls::stream<ap_uint<256>>`	`Axis256`
`m_axis_tx_meta`	AXI4-Stream out, 256 + keep/last	`pkt256`	`Axis256` + `TxSide`
`m_axis_tx_data`	AXI4-Stream out, 512 + keep/last	`pkt512`	`Axis512` + `TxSide`
`s_axis_tx_status`	AXI4-Stream in, 512	`pkt512` (drained)	`Axis512`
`network_ptr`	AXI4 master, 512-bit data	`m_axi gmem0`	`AxiRead`/`AxiWrite`
`message_ptr`	AXI4 master (reads)	`m_axi gmem1`	`AxiRead`
`s_axi_control`	AXI4-Lite	arguments and `ap_ctrl_hs`	`AxiLiteIn`/`AxiLiteOut`

Words are little-endian 64-bit lanes: lane 0 holds bits 0..64.

Modules§

regs: The kernel’s control registers (byte offsets), those of ubft_new’s HLS kernel (xubft_hw.h), so its host code drives rhdl_ubft unchanged.

AxiLiteIn: AXI4-Lite requests (the layout of the Ed25519 and DSig services’ port).
AxiLiteOut: AXI4-Lite responses.
AxiRead: AXI4 read requests from the kernel (INCR bursts of 64-byte beats).
AxiReadResp: AXI4 read responses to the kernel.
AxiWrite: AXI4 write requests from the kernel (single 64-byte beats with byte strobes).
AxiWriteResp: AXI4 write responses to the kernel.
Axis64: A 64-bit stream beat.
Axis256: A 256-bit stream beat.
Axis512: A 512-bit stream beat.
CfgWrite: One host write into a scheme’s configuration window.
CryptoIn: What the consensus controller asks of a signature scheme: the agreed four streams, plus a one-time setup (seed and peers’ keys). A scheme is any Synchronous component with I = CryptoIn, O = CryptoOut (crypto::ed25519::Ed25519Crypto, DSig’s crypto::dsig), and the replica is generic over it.
CryptoOut: A signature scheme’s answers to the controller.
TxSide: The tkeep of a meta beat (32 bytes, all kept).

CryptoScheme: A signature scheme’s compile-time shape. The replica takes SB = C::SHARE_BEATS as a const generic (kernels cannot read associated constants), and its constructor asserts they agree.