From: Florent Kermarrec Date: Wed, 27 May 2020 21:18:15 +0000 (+0200) Subject: integration/soc: add add_sdcard method with integration code from nexys4ddr. X-Git-Tag: 24jan2021_ls180~269 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4b3afa75a75254a223fda93bbe567961108906e1;p=litex.git integration/soc: add add_sdcard method with integration code from nexys4ddr. Even if not cleaned up yet, having it there will avoid duplications in targets. --- diff --git a/litex/boards/targets/nexys4ddr.py b/litex/boards/targets/nexys4ddr.py index 5875af81..0b0be3dd 100755 --- a/litex/boards/targets/nexys4ddr.py +++ b/litex/boards/targets/nexys4ddr.py @@ -21,14 +21,6 @@ from litedram.phy import s7ddrphy from liteeth.phy.rmii import LiteEthPHYRMII -from litesdcard.phy import SDPHY -from litesdcard.clocker import SDClockerS7 -from litesdcard.core import SDCore -from litesdcard.bist import BISTBlockGenerator, BISTBlockChecker -from litesdcard.data import SDDataReader, SDDataWriter -from litex.soc.cores.timer import Timer -from litex.soc.interconnect import wishbone - # CRG ---------------------------------------------------------------------------------------------- class _CRG(Module): @@ -99,56 +91,6 @@ class BaseSoC(SoCCore): sys_clk_freq = sys_clk_freq) self.add_csr("leds") - def add_sdcard(self, memory_size=512, memory_width=32): - sdcard_pads = self.platform.request("sdcard") - if hasattr(sdcard_pads, "rst"): - self.comb += sdcard_pads.rst.eq(0) - self.submodules.sdclk = SDClockerS7(sys_clk_freq=self.sys_clk_freq) - self.submodules.sdphy = SDPHY(sdcard_pads, self.platform.device) - self.submodules.sdcore = SDCore(self.sdphy, csr_data_width=self.csr_data_width) - self.submodules.sdtimer = Timer() - self.add_csr("sdclk") - self.add_csr("sdphy") - self.add_csr("sdcore") - self.add_csr("sdtimer") - - # SD Card data reader - - sdread_mem = Memory(memory_width, memory_size//4) - sdread_sram = FullMemoryWE()(wishbone.SRAM(sdread_mem, read_only=True)) - self.submodules += sdread_sram - - self.add_wb_slave(self.mem_map["sdread"], sdread_sram.bus, memory_size) - self.add_memory_region("sdread", self.mem_map["sdread"], memory_size) - - sdread_port = sdread_sram.mem.get_port(write_capable=True); - self.specials += sdread_port - self.submodules.sddatareader = SDDataReader(port=sdread_port, endianness=self.cpu.endianness) - self.add_csr("sddatareader") - self.comb += self.sdcore.source.connect(self.sddatareader.sink), - - # SD Card data writer - - sdwrite_mem = Memory(memory_width, memory_size//4) - sdwrite_sram = FullMemoryWE()(wishbone.SRAM(sdwrite_mem, read_only=False)) - self.submodules += sdwrite_sram - - self.add_wb_slave(self.mem_map["sdwrite"], sdwrite_sram.bus, memory_size) - self.add_memory_region("sdwrite", self.mem_map["sdwrite"], memory_size) - - sdwrite_port = sdwrite_sram.mem.get_port(write_capable=False, async_read=True, mode=READ_FIRST); - self.specials += sdwrite_port - self.submodules.sddatawriter = SDDataWriter(port=sdwrite_port, endianness=self.cpu.endianness) - self.add_csr("sddatawriter") - self.comb += self.sddatawriter.source.connect(self.sdcore.sink), - - self.platform.add_period_constraint(self.sdclk.cd_sd.clk, period_ns(self.sys_clk_freq)) - self.platform.add_period_constraint(self.sdclk.cd_sd_fb.clk, period_ns(self.sys_clk_freq)) - self.platform.add_false_path_constraints( - self.crg.cd_sys.clk, - self.sdclk.cd_sd.clk, - self.sdclk.cd_sd_fb.clk) - # Build -------------------------------------------------------------------------------------------- def main(): @@ -166,11 +108,10 @@ def main(): soc = BaseSoC(sys_clk_freq=int(float(args.sys_clk_freq)), with_ethernet=args.with_ethernet, **soc_sdram_argdict(args)) + assert not (args.with_spi_sdcard and args.with_spi_sdcard) if args.with_spi_sdcard: soc.add_spi_sdcard() if args.with_sdcard: - if args.with_spi_sdcard: - raise ValueError("'--with-spi-sdcard' and '--with-sdcard' are mutually exclusive!") soc.add_sdcard() builder = Builder(soc, **builder_argdict(args)) builder.build(run=args.build) diff --git a/litex/soc/integration/soc.py b/litex/soc/integration/soc.py index f2bb7c40..7aadf118 100644 --- a/litex/soc/integration/soc.py +++ b/litex/soc/integration/soc.py @@ -1241,3 +1241,60 @@ class LiteXSoC(SoC): spisdcard.add_clk_divider() setattr(self.submodules, name, spisdcard) self.add_csr(name) + + # Add SDCard ----------------------------------------------------------------------------------- + def add_sdcard(self, name="sdcard", memory_size=512, memory_width=32): + assert self.platform.device[:3] == "xc7" # FIXME: Only supports 7-Series for now. + # Imports + from litesdcard.phy import SDPHY + from litesdcard.clocker import SDClockerS7 + from litesdcard.core import SDCore + from litesdcard.bist import BISTBlockGenerator, BISTBlockChecker + from litesdcard.data import SDDataReader, SDDataWriter + # Core + sdcard_pads = self.platform.request(name) + if hasattr(sdcard_pads, "rst"): + self.comb += sdcard_pads.rst.eq(0) + self.submodules.sdclk = SDClockerS7(sys_clk_freq=self.sys_clk_freq) + self.submodules.sdphy = SDPHY(sdcard_pads, self.platform.device) + self.submodules.sdcore = SDCore(self.sdphy, csr_data_width=self.csr_data_width) + self.submodules.sdtimer = Timer() + self.add_csr("sdclk") + self.add_csr("sdphy") + self.add_csr("sdcore") + self.add_csr("sdtimer") + + # SD Card Data Reader + sdread_mem = Memory(memory_width, memory_size//4) + sdread_sram = FullMemoryWE()(wishbone.SRAM(sdread_mem, read_only=True)) + self.submodules += sdread_sram + + self.add_wb_slave(self.mem_map["sdread"], sdread_sram.bus, memory_size) + self.add_memory_region("sdread", self.mem_map["sdread"], memory_size) + + sdread_port = sdread_sram.mem.get_port(write_capable=True); + self.specials += sdread_port + self.submodules.sddatareader = SDDataReader(port=sdread_port, endianness=self.cpu.endianness) + self.add_csr("sddatareader") + self.comb += self.sdcore.source.connect(self.sddatareader.sink), + + # SD Card Data Writer + sdwrite_mem = Memory(memory_width, memory_size//4) + sdwrite_sram = FullMemoryWE()(wishbone.SRAM(sdwrite_mem, read_only=False)) + self.submodules += sdwrite_sram + + self.add_wb_slave(self.mem_map["sdwrite"], sdwrite_sram.bus, memory_size) + self.add_memory_region("sdwrite", self.mem_map["sdwrite"], memory_size) + + sdwrite_port = sdwrite_sram.mem.get_port(write_capable=False, async_read=True, mode=READ_FIRST); + self.specials += sdwrite_port + self.submodules.sddatawriter = SDDataWriter(port=sdwrite_port, endianness=self.cpu.endianness) + self.add_csr("sddatawriter") + self.comb += self.sddatawriter.source.connect(self.sdcore.sink), + + self.platform.add_period_constraint(self.sdclk.cd_sd.clk, 1e9/self.sys_clk_freq) + self.platform.add_period_constraint(self.sdclk.cd_sd_fb.clk, 1e9/self.sys_clk_freq) + self.platform.add_false_path_constraints( + self.crg.cd_sys.clk, + self.sdclk.cd_sd.clk, + self.sdclk.cd_sd_fb.clk)