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foboot-bitstream: more help description, add dvt support

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2019-04-01 10:09:20 +08:00
parent 0a4c73a63a
commit 2fd01b8303
1 changed files with 58 additions and 26 deletions
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84
hw/foboot-bitstream.py
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@ -34,7 +34,7 @@ from lxsocsupport import up5kspram, spi_flash
import argparse import argparse
_io = [ _io_evt = [
("serial", 0, ("serial", 0,
Subsignal("rx", Pins("21")), Subsignal("rx", Pins("21")),
Subsignal("tx", Pins("13"), Misc("PULLUP")), Subsignal("tx", Pins("13"), Misc("PULLUP")),
@ -73,11 +73,38 @@ _io = [
), ),
("clk48", 0, Pins("44"), IOStandard("LVCMOS33")) ("clk48", 0, Pins("44"), IOStandard("LVCMOS33"))
] ]
_io_dvt = [
("serial", 0,
Subsignal("rx", Pins("C3")),
Subsignal("tx", Pins("B3"), Misc("PULLUP")),
IOStandard("LVCMOS33")
),
("usb", 0,
Subsignal("d_p", Pins("A1")),
Subsignal("d_n", Pins("A2")),
Subsignal("pullup", Pins("A4")),
IOStandard("LVCMOS33")
),
("spiflash", 0,
Subsignal("cs_n", Pins("C1"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("D1"), IOStandard("LVCMOS33")),
Subsignal("miso", Pins("E1"), IOStandard("LVCMOS33")),
Subsignal("mosi", Pins("F1"), IOStandard("LVCMOS33")),
Subsignal("wp", Pins("F2"), IOStandard("LVCMOS33")),
Subsignal("hold", Pins("B1"), IOStandard("LVCMOS33")),
),
("spiflash4x", 0,
Subsignal("cs_n", Pins("C1"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("D1"), IOStandard("LVCMOS33")),
Subsignal("dq", Pins("E1 F1 F2 B1"), IOStandard("LVCMOS33")),
),
("clk48", 0, Pins("F4"), IOStandard("LVCMOS33"))
]
_connectors = [] _connectors = []
class _CRG(Module): class _CRG(Module):
def __init__(self, platform, use_pll=False): def __init__(self, platform, use_pll):
if use_pll: if use_pll:
clk48_raw = platform.request("clk48") clk48_raw = platform.request("clk48")
clk12_raw = Signal() clk12_raw = Signal()
@ -250,28 +277,30 @@ class Platform(LatticePlatform):
gateware_size = 0x20000 gateware_size = 0x20000
def __init__(self, toolchain="icestorm"): def __init__(self, revision=None, toolchain="icestorm"):
LatticePlatform.__init__(self, "ice40-up5k-sg48", _io, _connectors, toolchain="icestorm") if revision == "evt":
LatticePlatform.__init__(self, "ice40-up5k-sg48", _io_evt, _connectors, toolchain="icestorm")
elif revision == "dvt":
LatticePlatform.__init__(self, "ice40-up5k-uwg30", _io_dvt, _connectors, toolchain="icestorm")
else:
raise ValueError("Unrecognized reivsion: {}. Known values: evt, dvt".format(revision))
def create_programmer(self): def create_programmer(self):
raise ValueError("programming is not supported") raise ValueError("programming is not supported")
# def do_finalize(self, fragment):
# LatticePlatform.do_finalize(self, fragment)
class SBWarmBoot(Module, AutoCSR): class SBWarmBoot(Module, AutoCSR):
def __init__(self): def __init__(self):
self.ctrl = CSRStorage(size=8) self.ctrl = CSRStorage(size=3)
do_reset = Signal() # do_reset = Signal()
self.comb += [ # self.comb += [
# "Reset Key" is 0xac # # "Reset Key" is 0xac
do_reset.eq(self.ctrl.storage[2] & self.ctrl.storage[3] & ~self.ctrl.storage[4] # do_reset.eq(self.ctrl.storage[2] & self.ctrl.storage[3] & ~self.ctrl.storage[4]
& self.ctrl.storage[5] & ~self.ctrl.storage[6] & self.ctrl.storage[7]) # & self.ctrl.storage[5] & ~self.ctrl.storage[6] & self.ctrl.storage[7])
] # ]
self.specials += Instance("SB_WARMBOOT", self.specials += Instance("SB_WARMBOOT",
i_BOOT=do_reset, i_S0 = self.ctrl.storage[0],
i_S0 = self.ctrl.storage[0], i_S1 = self.ctrl.storage[1],
i_S1 = self.ctrl.storage[1] i_BOOT = self.ctrl.storage[2] & self.ctrl.re,
) )
@ -396,16 +425,18 @@ class BaseSoC(SoCCore):
self.integrated_sram_size = 0 self.integrated_sram_size = 0
clk_freq = int(12e6) clk_freq = int(12e6)
self.submodules.crg = _CRG(platform, use_pll) self.submodules.crg = _CRG(platform, use_pll=use_pll)
SoCCore.__init__(self, platform, clk_freq, integrated_sram_size=0, with_uart=False, **kwargs) SoCCore.__init__(self, platform, clk_freq, integrated_sram_size=0, with_uart=False, **kwargs)
if debug: if debug:
from litex.soc.cores.uart import UARTWishboneBridge
self.cpu.use_external_variant("2-stage-1024-cache-debug.v") self.cpu.use_external_variant("2-stage-1024-cache-debug.v")
from litex.soc.cores.uart import UARTWishboneBridge
self.register_mem("vexriscv_debug", 0xf00f0000, self.cpu.debug_bus, 0x10) self.register_mem("vexriscv_debug", 0xf00f0000, self.cpu.debug_bus, 0x10)
self.submodules.uart_bridge = UARTWishboneBridge(platform.request("serial"), clk_freq, baudrate=115200) self.submodules.uart_bridge = UARTWishboneBridge(platform.request("serial"), clk_freq, baudrate=115200)
self.add_wb_master(self.uart_bridge.wishbone) self.add_wb_master(self.uart_bridge.wishbone)
else:
self.cpu.use_external_variant("2-stage-1024-cache.v")
# SPRAM- UP5K has single port RAM, might as well use it as SRAM to # SPRAM- UP5K has single port RAM, might as well use it as SRAM to
# free up scarce block RAM. # free up scarce block RAM.
@ -510,15 +541,15 @@ def make_multiboot_header(filename, boot_offsets=[128]):
output.write(bytes([0])) output.write(bytes([0]))
def main(): def main():
# make_multiboot_header("multiboot", [128, 262144, 524288, 524288*2])
# import sys
# sys.exit(0)
platform = Platform()
parser = argparse.ArgumentParser( parser = argparse.ArgumentParser(
description="Build Fomu Main Gateware") description="Build Fomu Main Gateware")
parser.add_argument( parser.add_argument(
"--boot-source", choices=["spi", "rand", "bios"], default="rand" "--boot-source", choices=["spi", "rand", "bios"], default="rand",
help="where to have the CPU obtain its executable code from"
)
parser.add_argument(
"--revision", choices=["dvt", "evt"], required=True,
help="build foboot for a particular hardware revision"
) )
parser.add_argument( parser.add_argument(
"--bios", help="use specified file as a BIOS, rather than building one" "--bios", help="use specified file as a BIOS, rather than building one"
@ -575,9 +606,10 @@ def main():
cpu_variant = "debug" cpu_variant = "debug"
debug = True debug = True
platform = Platform(revision=args.revision)
soc = BaseSoC(platform, cpu_type="vexriscv", cpu_variant=cpu_variant, soc = BaseSoC(platform, cpu_type="vexriscv", cpu_variant=cpu_variant,
debug=debug, boot_source=boot_source, debug=debug, boot_source=boot_source,
bios_file=bios_file, use_pll=not args.no_pll) bios_file=bios_file, use_pll=args.no_pll)
builder = Builder(soc, output_dir="build", csr_csv="test/csr.csv", compile_software=compile_software) builder = Builder(soc, output_dir="build", csr_csv="test/csr.csv", compile_software=compile_software)
vns = builder.build() vns = builder.build()
soc.do_exit(vns) soc.do_exit(vns)