def __init__(self, platform, **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 = 50*1000000
if 'expansion' in kwargs:
tofe_board_name = kwargs.get('expansion')
del kwargs['expansion']
else:
tofe_board_name = None
# 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.platform.add_period_constraint(self.crg.cd_sys.clk, 1e9/sys_clk_freq)
# Add specialized uart ---------------------------------------------------------------------
self.submodules.suart = shared_uart.SharedUART(self.clk_freq, 115200)
self.suart.add_uart_pads(platform.request('fx2_serial'))
self.submodules.uart = self.suart.uart
self.add_csr("uart")
self.add_interrupt("uart")
# DDR3 SDRAM -------------------------------------------------------------------------------
if True:
sdram_module = MT41J128M16(sys_clk_freq, "1:4")
self.submodules.ddrphy = s6ddrphy.S6QuarterRateDDRPHY(
platform.request("ddram"),
rd_bitslip = 0,
wr_bitslip = 4,
dqs_ddr_alignment="C0")
self.add_csr("ddrphy")
controller_settings = ControllerSettings(
with_bandwidth=True)
self.register_sdram(
self.ddrphy,
geom_settings = sdram_module.geom_settings,
timing_settings = sdram_module.timing_settings,
controller_settings=controller_settings)
self.comb += [
self.ddrphy.clk8x_wr_strb.eq(self.crg.clk8x_wr_strb),
self.ddrphy.clk8x_rd_strb.eq(self.crg.clk8x_rd_strb),
]
# Basic peripherals ------------------------------------------------------------------------
# info module
self.submodules.info = info.Info(platform, self.__class__.__name__)
self.add_csr("info")
# control and status module
#self.submodules.cas = cas.ControlAndStatus(platform, sys_clk_freq)
self.add_csr("cas")
# opsis specific i2c module
self.submodules.opsis_i2c = opsis_i2c.OpsisI2C(platform)
self.add_csr("opsis_i2c")
# front panel (ATX) module
self.submodules.front_panel = FrontPanelGPIO(platform, sys_clk_freq)
self.comb += self.crg.reset.eq(self.front_panel.reset)
self.add_csr("front_panel")
# Expansion boards -------------------------------------------------------------------------
if tofe_board_name:
if tofe_board_name == 'lowspeedio':
self.submodules.tofe = tofe.TOFEBoard(tofe_board_name)(platform, self.suart)
else:
self.submodules.tofe = tofe.TOFEBoard(tofe_board_name)(platform)
# 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 ------------------------------------------------------------------
self.submodules.spiflash = spi_flash.SpiFlash(
platform.request("spiflash4x"),
dummy=platform.spiflash_read_dummy_bits,
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
define_flash_constants(self)
def __init__(self, platform, **kwargs):
clk_freq = 50 * 1000000
if 'tofe_board' in kwargs:
tofe_board_name = kwargs.get('tofe_board')
del kwargs['tofe_board']
else:
tofe_board_name = None
SoCSDRAM.__init__(self,
platform,
clk_freq,
integrated_rom_size=0x8000,
integrated_sram_size=0x4000,
with_uart=False,
**kwargs)
self.submodules.crg = _CRG(platform, clk_freq)
self.platform.add_period_constraint(self.crg.cd_sys.clk,
1e9 / clk_freq)
self.submodules.info = info.Info(platform, "opsis",
self.__class__.__name__[:8])
self.submodules.opsis_i2c = opsis_i2c.OpsisI2C(platform)
self.submodules.suart = shared_uart.SharedUART(self.clk_freq, 115200)
self.suart.add_uart_pads(platform.request('fx2_serial'))
self.submodules.uart = self.suart.uart
self.submodules.spiflash = spi_flash.SpiFlash(
platform.request("spiflash4x"),
dummy=platform.spiflash_read_dummy_bits,
div=platform.spiflash_clock_div)
self.add_constant("SPIFLASH_PAGE_SIZE", platform.spiflash_page_size)
self.add_constant("SPIFLASH_SECTOR_SIZE",
platform.spiflash_sector_size)
self.register_mem("spiflash",
self.mem_map["spiflash"],
self.spiflash.bus,
size=platform.spiflash_total_size)
bios_size = 0x8000
self.flash_boot_address = self.mem_map[
"spiflash"] + platform.gateware_size + bios_size
# front panel (ATX)
self.submodules.front_panel = FrontPanelGPIO(platform, clk_freq)
self.comb += self.crg.reset.eq(self.front_panel.reset)
# sdram
sdram_module = MT41J128M16(self.clk_freq, "1:4")
self.submodules.ddrphy = s6ddrphy.S6QuarterRateDDRPHY(
platform.request("ddram"),
rd_bitslip=0,
wr_bitslip=4,
dqs_ddr_alignment="C0")
controller_settings = ControllerSettings(with_bandwidth=True)
self.register_sdram(self.ddrphy,
sdram_module.geom_settings,
sdram_module.timing_settings,
controller_settings=controller_settings)
self.comb += [
self.ddrphy.clk8x_wr_strb.eq(self.crg.clk8x_wr_strb),
self.ddrphy.clk8x_rd_strb.eq(self.crg.clk8x_rd_strb),
]
if tofe_board_name:
if tofe_board_name == 'lowspeedio':
self.submodules.tofe = tofe.TOFEBoard(tofe_board_name)(
platform, self.suart)
else:
self.submodules.tofe = tofe.TOFEBoard(tofe_board_name)(
platform)