[spi_host] Low-level SD card support#446
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elliotb-lowrisc wants to merge 2 commits intolowRISC:mainfrom
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[spi_host] Low-level SD card support#446elliotb-lowrisc wants to merge 2 commits intolowRISC:mainfrom
elliotb-lowrisc wants to merge 2 commits intolowRISC:mainfrom
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Replace the initial SPI Host loopback connections with connections to the microSD card slot for Genesys2 and an SD card model for Verilator. This includes allocating a GPI pin for card presence detection and a GPO pin for SD card reset (power supply switching). Also output the SPI Host signals on an otherwise unused Genesys2 PMOD header for easier debugging using a logic analyser.
Add SD card and minimal filesystem helpers for SPI Host, and some tests. These have been ported from sonata-system, which required changes for the different spi_host hardware and translating from C++ to C. Only a subset of the tests will run in Verilator unless an SD card image is provided.
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Replace the initial SPI Host loopback connections with connections to the microSD card slot for Genesys2 and an SD card model for Verilator. This includes allocating a GPI pin for card presence detection and a GPO pin for SD card reset (power supply switching).
Also output the SPI Host signals on an otherwise unused Genesys2 PMOD header for easier debugging using a logic analyser.
Add SD card and minimal filesystem helpers for SPI Host, and some tests. These have been ported from sonata-system, which required changes for the different spi_host hardware and translating from C++ to C.
Only a subset of the tests will run in Verilator unless an SD card image is provided.