6 import litex_boards
.targets
.versa_ecp5
as versa_ecp5
7 import litex_boards
.targets
.ulx3s
as ulx3s
9 from litex
.soc
.integration
.soc_sdram
import (soc_sdram_args
,
11 from litex
.soc
.integration
.builder
import (Builder
, builder_args
,
14 from libresoc
import LibreSoC
15 #from microwatt import Microwatt
18 # ----------------------------------------------------------------------------
20 class VersaECP5TestSoC(versa_ecp5
.BaseSoC
):
21 def __init__(self
, sys_clk_freq
=int(16e6
), **kwargs
):
22 kwargs
["integrated_rom_size"] = 0x10000
23 #kwargs["integrated_main_ram_size"] = 0x1000
24 kwargs
["csr_data_width"] = 32
28 versa_ecp5
.BaseSoC
.__init
__(self
,
29 sys_clk_freq
= sys_clk_freq
,
30 cpu_type
= "external",
32 cpu_variant
= "standardjtag",
33 cpu_variant
= "standardjtagnoirq",
38 #self.add_constant("MEMTEST_BUS_SIZE", 256//16)
39 #self.add_constant("MEMTEST_DATA_SIZE", 256//16)
40 #self.add_constant("MEMTEST_ADDR_SIZE", 256//16)
42 #self.add_constant("MEMTEST_BUS_DEBUG", 1)
43 #self.add_constant("MEMTEST_ADDR_DEBUG", 1)
44 #self.add_constant("MEMTEST_DATA_DEBUG", 1)
46 class ULX3S85FTestSoC(ulx3s
.BaseSoC
):
47 def __init__(self
, sys_clk_freq
=int(16e6
), **kwargs
):
48 kwargs
["integrated_rom_size"] = 0x10000
49 #kwargs["integrated_main_ram_size"] = 0x1000
50 kwargs
["csr_data_width"] = 32
54 ulx3s
.BaseSoC
.__init
__(self
,
55 sys_clk_freq
= sys_clk_freq
,
56 cpu_type
= "external",
58 cpu_variant
= "standardjtag",
64 # ----------------------------------------------------------------------------
67 parser
= argparse
.ArgumentParser(description
="LiteX SoC with LibreSoC " \
68 "CPU on Versa ECP5 or ULX3S LFE5U85F")
69 parser
.add_argument("--build", action
="store_true", help="Build bitstream")
70 parser
.add_argument("--load", action
="store_true", help="Load bitstream")
71 parser
.add_argument("--sys-clk-freq", default
=int(16e6
),
72 help="System clock frequency (default=16MHz)")
73 parser
.add_argument("--fpga", default
="versa_ecp5", help="FPGA target " \
74 "to build for/load to")
77 soc_sdram_args(parser
)
78 args
= parser
.parse_args()
80 if args
.fpga
== "versa_ecp5":
81 soc
= VersaECP5TestSoC(sys_clk_freq
=int(float(args
.sys_clk_freq
)),
82 **soc_sdram_argdict(args
))
84 elif args
.fpga
== "ulx3s85f":
85 soc
= ULX3S85FTestSoC(sys_clk_freq
=int(float(args
.sys_clk_freq
)),
86 **soc_sdram_argdict(args
))
89 soc
= VersaECP5TestSoC(sys_clk_freq
=int(float(args
.sys_clk_freq
)),
90 **soc_sdram_argdict(args
))
92 builder
= Builder(soc
, **builder_argdict(args
))
93 builder
.build(run
=args
.build
)
96 prog
= soc
.platform
.create_programmer()
97 prog
.load_bitstream(os
.path
.join(builder
.gateware_dir
,
98 soc
.build_name
+ ".svf"))
100 if __name__
== "__main__":