- Updated axi4_interconnect_tb to include an additional master and issue high-priority access tests. - Introduced hp_mailbox_tb for testing the HP mailbox functionality, including register and doorbell operations. - Added plic_tb to validate PLIC priority, claim, and completion mechanisms. - Enhanced pll_ctrl_tb to initialize additional system control signals. - Updated soc_irq_topology_tb to account for new IRQ sources and validate IRQ signal behavior. - Improved sysctrl_tb to include tests for HP lifecycle control and status registers. - Added tests for HP boot bundle layout, CRC, and payload validation. - Introduced test_hp_mailbox.py for RTL regression testing of the HP mailbox. - Added test_hp_platform.py to validate HP platform configuration and generated-source boundaries. - Enhanced test_librelane_flow.py to ensure correct signal placement in chip configuration. - Added performance log tests to validate LP and HP coremark ratios. - Updated test_soc_topology.py to reflect changes in IRQ and peripheral mappings.
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FPGA Integration
This directory contains FPGA-facing top-level integration for the Mini SoC.
mini/retrosoc_top.sv is the FPGA top wrapper and
mini/starrysky_v2.xdc contains board timing and pin constraints.
The wrapper consumes the generated retrosoc_asic_fpga_mini_bindings.svh
include. Before invoking an FPGA tool, generate the selected profile with
make CONFIG=configs/ci/hazard3-rv32im-ihp130.mk pin-map and add
build/<variant>/generated/pin_map/rtl to the tool include path. Logical pad
names and wrapper bindings are owned by rtl/mini/pin_map/pin_map.json;
package locations remain in the board .xdc file.
The dedicated SDIO1 pads are intentionally left unbound by the FPGA profile
until a board package location and 3.3 V I/O-bank assignment are approved;
the existing LVCMOS18 constraints do not establish SDIO electrical support.
The new UART1 HP-console ports are likewise left unbound until two StarrySky
package pins and their I/O voltage are reviewed. The ASIC profile still owns
dedicated UART1 pads; this FPGA constraint gap is intentional and must be
resolved before generating an HP board bitstream.
FPGA constraints are board-specific implementation inputs, not generic ASIC
RTL. Validate changes with the relevant FPGA tool flow and hardware target; do
not reuse them as ASIC timing constraints. Follow the RTL and hardware-facing
validation requirements in AGENTS.md.