Integrate the SPI-P2 shared-DMA ABI into the Tiny product: SPI0 at
0x1001D000 with IRQ25 and RCU target16, the four frozen Gen1 ALT routes,
latched four-bit source qualification through the fabric and APB CDC, GPIO
readiness/ownership guard, and the bounded rs_spi_* HAL with the
TINY_SPI_P3_ACCEPTANCE ci_smoke image. Tiny DMA enables V2.2 requests 16/17
with exact fixed FIFO MMIO checks; Mini remains default-disabled and
unchanged. Review closure: the DMA AXI4 master stages the origin channel with
each burst so final and contended SPI alias bursts stay qualified, the RCU
spare feedback bit is tied off for four-state simulators, and the
clock-switch quiescence now includes the SPI session.
Validation: full Pytest 2097 passed, 0 failed, 1 skipped (optional pypdf);
both Tiny profiles pass the SPI-P3 Verilator acceptance (SIM_TEST_PASS
cycles=1030088); R2-P7 Verilator acceptance, Mini DMA formal prove and
cover, Mini/Tiny lint, Tiny Yosys synthesis, netsim-boot and OpenSTA pass;
C format/policy/host tests and RTL format/style checks clean. Evidence and
remaining obligations are recorded in docs/ip/spi-verification.md.
Tiny Icarus behavioral remains blocked by the pre-existing observer/sv2v
defect (routed to the R2 DV owners); Mini smoke synthesis host timeout is
skipped per maintainer decision. Human phase acceptance and SPI-P4/P5
remain outstanding; phase_accepted stays false.
Connect DVP to Tiny DMA2/request 11, IRQ15 and the camera pad/reset lifecycle.
Harden shared capture CDC, frame statistics, per-row size validation and HAL
cleanup while preserving the Mini DMA3 binding and existing register ABI.
Add deterministic capture/recovery firmware, source-bound evidence tooling,
focused RTL/host tests and compact netlist acceptance. Preserve SAFE24,
128 KiB main SRAM, private Crypto storage and the locked dependencies.
Retained validation: focused RTL, host/policy checks, Mini firmware, and
ICS55/IHP130 RECOVERY, QVGA, synthesis and boot/DVP netlist checks pass.
Full-system VGA remains historical; long full Icarus and broad regressions
remain deferred. Global publication/format gaps and negative observational
STA are retained, not reported as passing qualification.
Specification: docs/ip/tiny-soc.md, TINY-R2-P9.
Evidence: docs/ip/tiny-soc-verification.md.
Integrate the Tiny RCU, normalized REF24 control, external-input profiles,
single PLL backend, SYS/MEM/PCLK clocks, CPU-only WFI gating, peripheral
lifecycle control and retained debug behavior. Keep CPU and all 32 main
SRAM macros on SYS and the six private Crypto macros on PCLK.
Add the handwritten RCU register/HAL contract, RS_EBUSY, bounded SDK
operations and focused firmware. Preserve shared-IP defaults and the
ICS55/PLL SAFE24 boot and explicit IHP130/no-PLL compatibility profiles.
Use APB/AXI domain bridges and source-owned response holders to preserve
backpressured responses, complete aborted bursts and prevent stale replay.
Verify production DMA source-reset drain and common XPI endpoint reset
with extracted integration bindings and an independent scoreboard.
Add source-bound macro/clock audits, SAFE24 observational STA constraints
and commercial-adapter host checks. No P8 functionality or operating-point
qualification is included. See TINY-R2-P7 in docs/ip/tiny-soc.md.
Validation: 54 P7 directed tests pass, including both simulators, ten
source-reset ratio runs and two expected-negative drain mutations.
RTL format/style, clock/reset inventory, Ruff and both Tiny PDK PR dry-runs
pass. Retained 06-00 synthesis and strict netlist boots pass for both PDKs;
STA remains negative and observational. Source comparison confirms only
the follow-up tests changed after that backend campaign.
Evidence: build/ics55-tiny-2026-10-14-06-00-ff4b5cef6eb5/meta/
tiny-r2-p7-source-reset/summary.json. Earlier firmware, HAL and compatibility
results and the non-clean full-suite attempt retain their original
attribution. Full Icarus firmware is deferred to final Tiny qualification;
this commit does not constitute human phase acceptance or physical signoff.
- Updated onchip_ram64_tb to increase ID_WIDTH from 6 to 7 and adjusted related write/read tasks.
- Modified resource_controller_tb to accommodate an expanded resource count from 8 to 9, updating related logic signals.
- Enhanced sysctrl_tb to introduce new fault handling logic for data plane faults, including additional fault validation and delivery mechanisms.
- Added tests for clock and reset domains to ensure proper handling of data plane faults and their reset contracts.
- Introduced new test_ga2d_platform.py to verify GA2D Phase 2 functionality, including lifecycle and recovery processes.
- Updated test_soc_topology.py to ensure proper data master policies and validate GA2D integration within the system.
- Enhanced sysctrl.py to ensure the fault master retains the high bit for data plane faults.
- Updated to integrate a coefficient engine and additional signals for coefficient handling.
- Modified to include a coefficient engine, enhancing the encoding process with new signals.
- Improved to validate generated blocks against expected values and added timeout handling.
- Introduced for testing SRAM wrappers in JPEG workspace.
- Enhanced test coverage in to reject invalid STA net drivers.
- Updated to ensure proper coverage of canonical domains in timing contracts.
- Added a new test for JPEG coefficient engine in .
- Improved memory map tests in to validate public active MMIO regions.
- Enhanced management core specification tests in to verify high-performance core specifications.
- Added behavioral-only checks in to exclude synthesis and netlist consumers.
- Updated SDRAM tests in to track active firmware memory.
- Enhanced STA constraints tests in to cover current clock domains and net drivers.
- Added interface to and implemented error handling for register writes.
- Introduced a new test for AXI4 address gate functionality in .
- Updated clock and reset domain assertions in to reflect new domain names.
- Modified expected outputs in to include new clock domains.
- Adjusted chip configuration assertions in to account for additional power pads.
- Enhanced memory map tests in with new definitions and includes.
- Updated pin mapping tests in to include new reference clock pads.
- Improved script tools tests in to ensure correct validation of extension bindings.
- Refined system control tests in to include new clock control interface.
- Updated USB2 packet RAM tests in to include new SRAM definitions.
- Enhanced user extensions tests in to validate new product extension configurations.
- Adjusted user IP register parity tests to use legacy extensions.
- Updated Yosys synthesis recipe tests to reflect changes in STA period calculations.
- Introduced a new USB2 transaction engine testbench to validate the functionality of the USB2 transaction engine.
- Updated clock and reset domain tests to include USB2 ULPI crossings.
- Enhanced memory map tests to verify USB2 base addresses and performance offsets.
- Modified pin map tests to ensure USB2 ULPI pins are correctly generated.
- Updated SOC topology tests to account for USB2 peripherals and IRQ mappings.
- Added static timing analysis constraints for USB2 clock domains.
- Created dedicated USB2 tests for various components including packet RAM, descriptor validation, and transaction engine.
- Implemented a register parity test to ensure ABI consistency between RTL and C header definitions.
- Modified dma_core to accommodate a wider data width for FIFO operations.
- Updated filelists to include new DVP source files and formal verification files.
- Introduced formal verification modules for DVP functionality.
- Enhanced clock and reset domain configurations for DVP integration.
- Added DVP interrupt handling in the IRQ topology.
- Implemented a testbench for DVP to validate register access and frame processing.
- Updated software build scripts to include DVP-related source files.
- Adjusted the system topology to reflect the new DVP interrupt and IRQ mapping.
- Introduced signal in sysctrl interface and module to handle RTC wake events.
- Added RTC wake status register in memory map and updated related tests.
- Integrated RTC wake handling in the APB wrapper and core wrapper.
- Enhanced clock and reset domain configurations to include RTC signals.
- Updated software build configurations to include RTC source files and headers.
- Modified formal verification and testbench files to accommodate RTC wake functionality.
- Ensured proper synchronization and status recording for RTC wake events in the sysctrl module.
- Updated the formal file list generator to include CLINT source files.
- Added CLINT timebase to the clock and reset domains configuration.
- Enhanced the SOC topology generation to include CLINT interrupts and their mappings.
- Introduced a new CLINT testbench to validate multi-hart and timebase functionality.
- Modified the software build configuration to define CLINT timebase frequency.
- Updated the RCU module to integrate CLINT timebase generation.
- Adjusted the IRQ configuration to reflect changes in CLINT interrupt signals.
- Added user-visible flags for interrupts in the topology configuration.
- Enhanced the clock reset domain checks to include CLINT timebase.
- Updated the memory map tests to validate CLINT peripheral integration.
- Implemented module to handle debug reset requests, ensuring proper synchronization with the AHB-Lite bridge.
- Created to integrate JTAG-DTM and Debug Module, facilitating abstract command exposure.
- Updated and modules to include JTAG interface signals.
- Enhanced the development environment with scripts for running debug sessions using OpenOCD and GDB.
- Added tests for management debug reset functionality and JTAG integration, ensuring correct behavior under various scenarios.
- Updated SDC generation to include JTAG clock domain and port requirements.
- Modified various scripts to support new debug features and ensure compatibility with the Hazard3 architecture.
- Replaced instances of nmi_if with rib_if in sysctrl_fault_tb.sv, test_dma.py, test_gpio_user_mux.py, test_memory_map.py, test_performance_log.py, test_script_tools.py, test_sdram.py, test_soc_topology.py, test_sta_constraints.py, and test_user_extensions.py.
- Updated test cases to reflect changes from NMI to RIB, ensuring all references and assertions are consistent with the new interface.
- Adjusted memory map and performance log tests to validate RIB-specific configurations and behaviors.
- Ensured that all relevant file paths and definitions are updated to maintain functionality and correctness across the test suite.
- Updated soc_topology.json to include new fabric links for core, DMA, native, and APB interfaces.
- Refactored retrosoc.sv to utilize generated fabric links and included necessary SVH files for better modularity.
- Improved check_clock_reset_domains.py to validate hierarchical pins and added support for positive number checks.
- Modified regress.py to include OpenSTA in the regression commands.
- Enhanced README.md in the STA directory to clarify the timing analysis flow and supported PDK profiles.
- Removed outdated gen2.sdc file and replaced it with a dynamic SDC generation approach.
- Updated opensta.mk to generate SDC files dynamically based on the current domain map and pin map.
- Created generate_sdc.py to automate SDC generation from clock/reset domain inventory.
- Added tests for generated core-STA constraints to ensure coverage of current clock domains and validate pin map integrity.
- Introduced new timing metrics and warnings for the sky130 PDK in the quality checks.
- Added APB target definitions in soc_topology.json for various peripherals.
- Introduced user_extensions.json to define user core and IP targets.
- Updated generate_filelist.py to include SVA paths.
- Refactored ip_apb_wrapper.sv to utilize generated APB interfaces and bridges.
- Simplified user_core_top.sv and user_ip_top.sv by including generated bindings.
- Implemented check_clock_reset_domains.py to validate clock/reset domains and CDC crossings.
- Updated regress.py to include SVA support in simulation commands.
- Added tests for clock/reset domain validation and user extensions generation.
- Enhanced test coverage for topology generation and APB target ownership validation.
maksyuki