## SD/MMC (including eMMC)

* <http://bugs.libre-riscv.org/show_bug.cgi?id=7>
* <https://opencores.org/project,sd_mmc_emulator>
* (needs work) <https://opencores.org/project,sdcard_mass_storage_controller>
* <https://github.com/enjoy-digital/litesdcard> - needs investigation
* <https://github.com/lowRISC/lowrisc-chip/tree/ethernet-v0.5/src/main/verilog> - looks good.

# Requirements

* eMMC 8-bit mode
* SD/MMC 1, 2 and 4-bit mode
* SPI compatible
* Must be libre BSD or MIT Licensed (no restrictions, no non-free "non-commercial" clauses).
* AXI interface preferred, Wishbone acceptable (bridge will be used).
* Linux kernel driver needed (preferred).