We have added support for RISC-V hardware in our wolfBoot library. The reference example uses the SiFive HiFive1 FE310 board to demonstrate a secure bootloader and firmware upgrade.
The HiFive1 is a 32-bit E31 RISC-V core capable of running at 320MHz. It includes 4MB of external flash and 16KB of internal RAM.
The wolfBoot library provides:
- Boot validation of the firmware image using hash and signature
- Reliable firmware update (power fail safe).
- Rollback support if application does not report “success”
- Version checking to prevent downgrade attack
- Support for external flash on updates
This adds support for:
- RV32 Hardware Access Layer (HAL) support for:
- PLL Clock configuration
- Flash eSPI
- UART
- RTC
- Firmware update example using the serial interface
Full setup and installation instructions can be found in “docs/Targets.md”.
These new features can be found on GitHub here:
https://github.com/wolfSSL/wolfBoot/pull/14
For questions please email us at facts@wolfssl.com.