Support for Microchip PolarFire SoC (MPFS250)#647
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danielinux merged 13 commits intowolfSSL:masterfrom Dec 24, 2025
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Support for Microchip PolarFire SoC (MPFS250)#647danielinux merged 13 commits intowolfSSL:masterfrom
danielinux merged 13 commits intowolfSSL:masterfrom
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dgarske
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Dec 23, 2025
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Pull request overview
This PR adds comprehensive support for the Microchip PolarFire SoC (MPFS250T) platform and refactors GPT (GUID Partition Table) code for cross-platform reusability.
Key Changes:
- New RISC-V 64-bit platform support for PolarFire SoC with complete HAL, boot logic, and device tree
- Refactored GPT code from x86-specific to generic, reusable implementation with disk abstraction layer
- Updated build system and CI for the new target
Reviewed changes
Copilot reviewed 41 out of 43 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| hal/mpfs250.* | New HAL implementation for MPFS250 including register definitions, hardware abstraction, UART, and SD/MMC drivers |
| hal/mpfs.* | Device tree source/binary and HSS payload configuration for PolarFire SoC |
| src/boot_riscv64* | RISC-V 64-bit boot logic and assembly startup code |
| src/vector_riscv64.S | RISC-V 64-bit interrupt vector table implementation |
| src/gpt.c, include/gpt.h | Generic GPT parsing functions extracted from x86-specific code |
| src/disk.c, include/disk.h | New disk abstraction layer for GPT partition handling |
| src/update_disk.c | Updated to use generic GPT/disk interface, added FIT image and ELF loading support |
| test-app/app_mpfs250.c | Test application for the new platform |
| test-app/RISCV64-mpfs250.ld | Linker script for test applications |
| docs/Targets.md | Comprehensive documentation for building, flashing, and debugging |
| config/examples/polarfire_mpfs250.config | Example build configuration |
| .github/workflows/test-configs.yml | CI integration for automated testing |
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danielinux
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Dec 24, 2025
danielinux
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Dec 24, 2025
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Summary
This PR adds full support for the Microchip PolarFire SoC (MPFS250T) secure boot target, along with a refactoring of GPT (GUID Partition Table) code to make it reusable across multiple architectures.
Key Changes
1. New Platform: Microchip PolarFire SoC (MPFS250)
rv64imac) with five-core CPU cluster (1× E51 monitor core + 4× U54 application cores)hal/mpfs250.c- Hardware abstraction layer implementation (UART and uSD)hal/mpfs250.h- Register definitions and hardware interfaceshal/mpfs250.ld- Linker script for the platformhal/mpfs.dts/hal/mpfs.dtb- Device tree source and binaryhal/mpfs.yaml- HSS payload generator configurationhal/mpfs250.its- Example FIT image templatesrc/boot_riscv64.c- RISC-V 64-bit boot logicsrc/boot_riscv64_start.S- Assembly startup codesrc/vector_riscv64.S- Interrupt vector tabletest-app/app_mpfs250.cwith linker scriptconfig/examples/polarfire_mpfs250.config2. GPT Refactoring for Cross-Platform Use
Refactored the x86-specific GPT code into a generic, reusable implementation:
src/gpt.c+include/gpt.h- Platform-independent GPT parsinginclude/disk.h- Common disk interface definitionssrc/x86/gpt.c→src/gpt.c(now contains generic GPT functions) andsrc/disk.c(now contains generic MBR/GPT handling functions)update_disk.c: Updated to work with the generic GPT interface for non-x86 targets3. Build & CI Updates
test-configs.ymlworkflow for automated build testingarch.mkwith RISCV64 architecture support and MPFS250 target rulesTesting
Documentation
Added comprehensive documentation in
docs/Targets.mdcovering:Future Work (documented)