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microwatt/litedram/extras
Benjamin Herrenschmidt a3857aac94 litedram: Add an L2 cache with store queue
This adds a cache between the wishbone and litedram with the following
features (at this point, it's still evolving)

  - 128 bytes line width in order to have a reasonable amount of
litedram pipelining on the 128-bit wide data port.

  - Configurable geometry otherwise

  - Stores are acked immediately on wishbone whether hit or miss
(minus a 2 cycles delay if there's a previous load response in the
way) and sent to LiteDRAM via 8 entries (configurable) store queue

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
4 years ago
..
VexRiscv.v litedram: Add basic support for LiteX LiteDRAM 4 years ago
fusesoc-add-files.py litedram: Add support for booting without BRAM 4 years ago
sim_dram_verilate.mk litedram: Add simulation support 4 years ago
sim_litedram.vhdl litedram: Add simulation support 4 years ago
sim_litedram_c.cpp litedram: Add simulation support 4 years ago
wave.gtkw litedram: Add an L2 cache with store queue 4 years ago
wave.opt litedram: Add an L2 cache with store queue 4 years ago
wrapper-mw-init.vhdl litedram: Add an L2 cache with store queue 4 years ago
wrapper-self-init.vhdl litedram: Add simulation support 4 years ago