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litex_sim: add LiteSPI

This commit is contained in:
Piotr Binkowski 2020-03-30 13:42:56 +02:00
parent ff04869c62
commit 31fceb0a10
1 changed files with 19 additions and 0 deletions
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19
litex/tools/litex_sim.py
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@ -16,6 +16,10 @@ from litex.build.sim.config import SimConfig
from litex.soc.integration.common import *
from litex.soc.integration.soc_sdram import *
from litex.soc.integration.builder import *
from litex.soc.integration.soc import *
from litespi import LiteSPI
from litespi.phy.model import LiteSPIPHYModel
from litedram import modules as litedram_modules
from litedram.common import *
@ -156,6 +160,7 @@ class SimSoC(SoCSDRAM):
def __init__(self,
with_sdram = False,
with_spi_xip = False,
with_ethernet = False,
with_etherbone = False,
etherbone_mac_address = 0x10e2d5000001,
@ -177,6 +182,14 @@ class SimSoC(SoCSDRAM):
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = CRG(platform.request("sys_clk"))
# SPI XIP ----------------------------------------------------------------------------------
if with_spi_xip:
spi_xip_size = kwargs["spi_xip_size"]
self.submodules.spiphy = LiteSPIPHYModel(spi_xip_size, init=kwargs["spi_xip_init"])
self.submodules.spictl = LiteSPI(phy=self.spiphy, endianness=self.cpu.endianness)
spi_xip_region = SoCRegion(origin=self.mem_map.get("spixip", None), size=spi_xip_size, cached=False)
self.bus.add_slave(name="spixip", slave=self.spictl.bus, region=spi_xip_region)
# SDRAM ------------------------------------------------------------------------------------
if with_sdram:
sdram_clk_freq = int(100e6) # FIXME: use 100MHz timings
@ -279,6 +292,8 @@ def main():
parser.add_argument("--threads", default=1, help="Set number of threads (default=1)")
parser.add_argument("--rom-init", default=None, help="rom_init file")
parser.add_argument("--ram-init", default=None, help="ram_init file")
parser.add_argument("--with-spi-xip", action="store_true", help="Enable SPI XIP support")
parser.add_argument("--spi-xip-init", default=None, help="spi_xip_init file")
parser.add_argument("--with-sdram", action="store_true", help="Enable SDRAM support")
parser.add_argument("--sdram-module", default="MT48LC16M16", help="Select SDRAM chip")
parser.add_argument("--sdram-data-width", default=32, help="Set SDRAM chip data width")
@ -311,6 +326,9 @@ def main():
soc_kwargs["uart_name"] = "sim"
if args.rom_init:
soc_kwargs["integrated_rom_init"] = get_mem_data(args.rom_init, cpu_endianness)
if args.with_spi_xip:
soc_kwargs["spi_xip_size"] = 8*1024*1024
soc_kwargs["spi_xip_init"] = get_mem_data(args.spi_xip_init, "big") if args.spi_xip_init is not None else None
if not args.with_sdram:
soc_kwargs["integrated_main_ram_size"] = 0x10000000 # 256 MB
if args.ram_init is not None:
@ -328,6 +346,7 @@ def main():
# SoC ------------------------------------------------------------------------------------------
soc = SimSoC(
with_sdram = args.with_sdram,
with_spi_xip = args.with_spi_xip,
with_ethernet = args.with_ethernet,
with_etherbone = args.with_etherbone,
with_analyzer = args.with_analyzer,