SPI flash example target for Xilinx? about litex-boards HOT 7 CLOSED

mem_map = {
    "spiflash": 0x20000000,
}
mem_map.update(SoCCore.mem_map)

def __init__(self, sys_clk_freq=int(100e6), spiflash="spiflash_4x", **kwargs):

    platform = te0725.Platform()

    SoCCore.__init__(self, platform, clk_freq=sys_clk_freq,
        ident="TE0725", ident_version=True,
        integrated_rom_size=0x8000,
        integrated_main_ram_size=0x8000,
        **kwargs)
    self.submodules.crg = _CRG(platform, sys_clk_freq)

    self.add_csr("spiflash", allow_user_defined=True)
    spiflash_dummy = {
        "spiflash_1x": 9,
        "spiflash_4x": 11,
    }
    spiflash_pads = platform.request(spiflash)
    self.submodules.spiflash = SpiFlash(
            spiflash_pads,
            dummy=spiflash_dummy[spiflash],
            endianness=self.cpu.endianness)

    self.spiflash.add_clk_primitive("xc7");	

    self.add_constant("SPIFLASH_PAGE_SIZE", 256)
    self.add_constant("SPIFLASH_SECTOR_SIZE", 0x10000)

    self.add_wb_slave(mem_decoder(self.mem_map["spiflash"]), self.spiflash.bus)
    self.add_memory_region(
        "spiflash", self.mem_map["spiflash"] | self.shadow_base, 16*1024*1024)