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microwatt/fpga
Michael Neuling d7458d5beb
Reduce the size of icache to help yosys ECP5 builds (#303)
The icache RAM is currently LUT ram not block ram. This massively
bloats the icache size. We think this is due to yosys not inferencing
the RAM correctly but that's yet to be confirmed.

Work around this for now by reducing the default size of the icache
RAM for the ECP5 builds.

On the ECP5 85K builts, this gets us from 95% down to 76% and helps
our CI to pass.

Signed-off-by: Michael Neuling <mikey@neuling.org>
3 years ago
..
LICENSE Initial import of microwatt 5 years ago
acorn-cle-215.xdc acorn: Add support for the Acorn CLE 215+ 4 years ago
arty_a7.xdc Merge pull request #277 from paulus/gpio 4 years ago
clk_gen_bypass.vhd Fix clk_gen_bypass 5 years ago
clk_gen_ecp5.vhd Add PLL for ECP5 device 5 years ago
clk_gen_mcmm.vhd Improve PLL/MMCM clocks configuration 5 years ago
clk_gen_plle2.vhd acorn: Add support for the Acorn CLE 215+ 4 years ago
cmod_a7-35.xdc Add SPI configuration to Xilinx constraint files 5 years ago
firmware.hex Add a few more FPGA related files 5 years ago
fpga-random.vhdl Add random number generator and implement the darn instruction 4 years ago
fpga-random.xdc Add random number generator and implement the darn instruction 4 years ago
genesys2.xdc fpga: Add support for Genesys2 4 years ago
hello_world.hex hello_world: Use new headers and frequency from syscon 5 years ago
main_bram.vhdl Fix some ghdlsynth issues with fpga_bram 5 years ago
nexys-video.xdc spi: Add SPI Flash controller 5 years ago
nexys_a7.xdc Add SPI configuration to Xilinx constraint files 5 years ago
pp_fifo.vhd pp_fifo: Fix full fifo losing all data on simultaneous push & pop 5 years ago
pp_soc_uart.vhd uart: Remove combinational loops on ack and stall signal 5 years ago
pp_utilities.vhd Initial import of microwatt 5 years ago
soc_reset.vhdl soc_reset: Use counters, add synchronizers 5 years ago
soc_reset_tb.vhdl Exit cleanly from testbench on success 5 years ago
top-acorn-cle-215.vhdl acorn: Add support for the Acorn CLE 215+ 4 years ago
top-arty.vhdl Merge pull request #277 from paulus/gpio 4 years ago
top-generic.vhdl Reduce the size of icache to help yosys ECP5 builds (#303) 3 years ago
top-genesys2.vhdl fpga: Add support for Genesys2 4 years ago
top-nexys-video.vhdl fetch1: Implement a simple branch target cache 4 years ago