occamy: Boot from SPI flash - Githubissues

openhwgroup / cva6-sdk

CVA6 SDK containing RISC-V tools and Buildroot

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occamy: Boot from SPI flash #52

Closed niwis closed 3 years ago

niwis commented 3 years ago

This adds/changes the following make targets required to boot Linux on occamy from the SPI flash:

uImage.bin: U-Boot compatible Linux image. Can be loaded into the VCU128's flash via Vivado.
fw_payload: Change the OpenSBI payload from Linux to U-Boot.

Furthermore, the u-boot submodule is bumped.

These are the current steps required to boot linux:

Load uImage.bin via Vivado into the VCU128's SPI flash.
Load Occamy bitstream, execute zero-stage boot loader from bootrom.
Connect to occamy via OpenOCD/gdb, load fw_payload.elf (OpenSBI + U-Boot), execute.