def __init__(self, platform, spiflash="spiflash_1x", **kwargs):
if 'integrated_rom_size' not in kwargs:
kwargs['integrated_rom_size']=0x8000
if 'integrated_sram_size' not in kwargs:
kwargs['integrated_sram_size']=0x8000
clk_freq = int(100e6)
SoCSDRAM.__init__(self, platform, clk_freq, with_uart=False, **kwargs)
self.submodules.crg = _CRG(platform)
self.crg.cd_sys.clk.attr.add("keep")
self.platform.add_period_constraint(self.crg.cd_sys.clk, period_ns(clk_freq))
uart_interfaces = [RS232PHYInterface() for i in range(2)]
self.submodules.uart = UART(uart_interfaces[0])
self.submodules.bridge = WishboneStreamingBridge(uart_interfaces[1], self.clk_freq)
self.add_wb_master(self.bridge.wishbone)
self.submodules.uart_phy = RS232PHY(platform.request("serial"), self.clk_freq, 115200)
self.submodules.uart_multiplexer = RS232PHYMultiplexer(uart_interfaces, self.uart_phy)
self.comb += self.uart_multiplexer.sel.eq(platform.request("user_sw", 0))
# Basic peripherals
self.submodules.info = info.Info(platform, self.__class__.__name__)
self.submodules.oled = oled.OLED(platform.request("oled"))
# sdram
self.submodules.ddrphy = a7ddrphy.A7DDRPHY(platform.request("ddram"))
self.add_constant("READ_LEVELING_BITSLIP", 3)
self.add_constant("READ_LEVELING_DELAY", 14)
sdram_module = MT41K256M16(self.clk_freq, "1:4")
self.register_sdram(self.ddrphy,
sdram_module.geom_settings,
sdram_module.timing_settings,
controller_settings=ControllerSettings(
with_bandwidth=True,
cmd_buffer_depth=8,
with_refresh=True))
# spi flash
spiflash_pads = platform.request(spiflash)
spiflash_pads.clk = Signal()
self.specials += Instance("STARTUPE2",
i_CLK=0, i_GSR=0, i_GTS=0, i_KEYCLEARB=0, i_PACK=0,
i_USRCCLKO=spiflash_pads.clk, i_USRCCLKTS=0, i_USRDONEO=1, i_USRDONETS=1)
spiflash_dummy = {
"spiflash_1x": 9,
"spiflash_4x": 11,
}
self.submodules.spiflash = spi_flash.SpiFlash(
spiflash_pads,
dummy=spiflash_dummy[spiflash],
div=2)
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"], 16*1024*1024)
self.add_interrupt("uart")
def __init__(self, platform, **kwargs):
clk_freq = 100 * 1000000
SoCSDRAM.__init__(self,
platform,
clk_freq,
integrated_rom_size=0x8000,
integrated_sram_size=0x8000,
**kwargs)
self.submodules.crg = _CRG(platform)
self.submodules.dna = dna.DNA()
self.submodules.xadc = xadc.XADC()
self.submodules.oled = oled.OLED(platform.request("oled"))
# sdram
self.submodules.ddrphy = a7ddrphy.A7DDRPHY(platform.request("ddram"))
self.add_constant("A7DDRPHY_BITSLIP", 2)
self.add_constant("A7DDRPHY_DELAY", 8)
sdram_module = MT41K256M16(self.clk_freq, "1:4")
self.register_sdram(self.ddrphy,
sdram_module.geom_settings,
sdram_module.timing_settings,
controller_settings=ControllerSettings(
with_bandwidth=True,
cmd_buffer_depth=8,
with_refresh=True))
def __init__(self, platform, spiflash="spiflash_1x", **kwargs):
if kwargs.get('cpu_type', None) == 'mor1kx':
dict_set_max(kwargs, 'integrated_rom_size', 0x10000)
else:
dict_set_max(kwargs, 'integrated_rom_size', 0x8000)
dict_set_max(kwargs, 'integrated_sram_size', 0x8000)
sys_clk_freq = int(100e6)
# disable uart
kwargs['with_uart'] = False
# SoCSDRAM ---------------------------------------------------------------------------------
SoCSDRAM.__init__(self, platform, clk_freq=sys_clk_freq, **kwargs)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq)
self.crg.cd_sys.clk.attr.add("keep")
self.platform.add_period_constraint(self.crg.cd_sys.clk,
1e9 / sys_clk_freq)
# DDR3 SDRAM -------------------------------------------------------------------------------
if True:
sdram_module = MT41K256M16(sys_clk_freq, "1:4")
self.submodules.ddrphy = s7ddrphy.A7DDRPHY(
platform.request("ddram"),
memtype=sdram_module.memtype,
nphases=4,
sys_clk_freq=sys_clk_freq)
self.add_csr("ddrphy")
self.add_constant("READ_LEVELING_BITSLIP", 3)
self.add_constant("READ_LEVELING_DELAY", 14)
self.register_sdram(self.ddrphy,
geom_settings=sdram_module.geom_settings,
timing_settings=sdram_module.timing_settings,
controller_settings=ControllerSettings(
with_bandwidth=True,
cmd_buffer_depth=8,
with_refresh=True))
# Extended UART ----------------------------------------------------------------------------
uart_interfaces = [RS232PHYInterface() for i in range(2)]
self.submodules.uart = UART(uart_interfaces[0])
self.submodules.bridge = Stream2Wishbone(uart_interfaces[1],
sys_clk_freq)
self.add_wb_master(self.bridge.wishbone)
self.add_csr("uart")
self.add_interrupt("uart")
self.submodules.uart_phy = RS232PHY(platform.request("serial"),
self.clk_freq, 115200)
self.submodules.uart_multiplexer = RS232PHYMultiplexer(
uart_interfaces, self.uart_phy)
self.comb += self.uart_multiplexer.sel.eq(
platform.request("user_sw", 0))
self.add_csr("uart_phy")
# Basic peripherals ------------------------------------------------------------------------
self.submodules.info = info.Info(platform, self.__class__.__name__)
self.add_csr("info")
# self.submodules.cas = cas.ControlAndStatus(platform, sys_clk_freq)
# self.add_csr("cas")
self.submodules.oled = oled.OLED(platform.request("oled"))
self.add_csr("oled")
# Add debug interface if the CPU has one ---------------------------------------------------
if hasattr(self.cpu, "debug_bus"):
self.register_mem(name="vexriscv_debug",
address=0xf00f0000,
interface=self.cpu.debug_bus,
size=0x100)
# Memory mapped SPI Flash ------------------------------------------------------------------
spiflash_pads = platform.request(spiflash)
spiflash_pads.clk = Signal()
self.specials += Instance("STARTUPE2",
i_CLK=0,
i_GSR=0,
i_GTS=0,
i_KEYCLEARB=0,
i_PACK=0,
i_USRCCLKO=spiflash_pads.clk,
i_USRCCLKTS=0,
i_USRDONEO=1,
i_USRDONETS=1)
spiflash_dummy = {
"spiflash_1x": 9,
"spiflash_4x": 11,
}
self.submodules.spiflash = spi_flash.SpiFlash(
spiflash_pads,
dummy=spiflash_dummy[spiflash],
div=platform.spiflash_clock_div,
endianness=self.cpu.endianness)
self.add_csr("spiflash")
self.add_constant("SPIFLASH_PAGE_SIZE", platform.spiflash_page_size)
self.add_constant("SPIFLASH_SECTOR_SIZE",
platform.spiflash_sector_size)
self.add_constant("SPIFLASH_TOTAL_SIZE", platform.spiflash_total_size)
self.add_wb_slave(self.mem_map["spiflash"], self.spiflash.bus,
platform.spiflash_total_size)
self.add_memory_region("spiflash", self.mem_map["spiflash"],
platform.spiflash_total_size)
bios_size = 0x8000
self.flash_boot_address = self.mem_map[
"spiflash"] + platform.gateware_size + bios_size
self.add_constant("FLASH_BOOT_ADDRESS", self.flash_boot_address)