1 # This file is Copyright (c) 2014-2020 Florent Kermarrec <florent@enjoy-digital.fr>
2 # This file is Copyright (c) 2013-2014 Sebastien Bourdeauducq <sb@m-labs.hk>
3 # This file is Copyright (c) 2019 Gabriel L. Somlo <somlo@cmu.edu>
9 from math
import log2
, ceil
13 from litex
.soc
.cores
import cpu
14 from litex
.soc
.cores
.identifier
import Identifier
15 from litex
.soc
.cores
.timer
import Timer
16 from litex
.soc
.cores
.spi_flash
import SpiFlash
17 from litex
.soc
.cores
.spi
import SPIMaster
19 from litex
.soc
.interconnect
.csr
import *
20 from litex
.soc
.interconnect
import csr_bus
21 from litex
.soc
.interconnect
import wishbone
22 from litex
.soc
.interconnect
import wishbone2csr
23 from litex
.soc
.interconnect
import axi
26 # - replace raise with exit on logging error.
27 # - cleanup SoCCSRRegion
29 logging
.basicConfig(level
=logging
.INFO
)
31 # Helpers ------------------------------------------------------------------------------------------
36 def colorer(s
, color
="bright"):
43 "underline": "\x1b[4m"}[color
]
45 return header
+ str(s
) + trailer
47 def build_time(with_time
=True):
48 fmt
= "%Y-%m-%d %H:%M:%S" if with_time
else "%Y-%m-%d"
49 return datetime
.datetime
.fromtimestamp(time
.time()).strftime(fmt
)
51 # SoCConstant --------------------------------------------------------------------------------------
53 def SoCConstant(value
):
56 # SoCRegion ----------------------------------------------------------------------------------------
59 def __init__(self
, origin
=None, size
=None, mode
="rw", cached
=True, linker
=False):
60 self
.logger
= logging
.getLogger("SoCRegion")
63 if size
!= 2**log2_int(size
, False):
64 self
.logger
.info("Region size {} internally from {} to {}.".format(
65 colorer("rounded", color
="cyan"),
66 colorer("0x{:08x}".format(size
)),
67 colorer("0x{:08x}".format(2**log2_int(size
, False)))))
68 self
.size_pow2
= 2**log2_int(size
, False)
73 def decoder(self
, bus
):
76 if (origin
& (size
- 1)) != 0:
77 self
.logger
.error("Origin needs to be aligned on size:")
78 self
.logger
.error(self
)
80 origin
>>= int(log2(bus
.data_width
//8)) # bytes to words aligned
81 size
>>= int(log2(bus
.data_width
//8)) # bytes to words aligned
82 return lambda a
: (a
[log2_int(size
):] == (origin
>> log2_int(size
)))
86 if self
.origin
is not None:
87 r
+= "Origin: {}, ".format(colorer("0x{:08x}".format(self
.origin
)))
88 if self
.size
is not None:
89 r
+= "Size: {}, ".format(colorer("0x{:08x}".format(self
.size
)))
90 r
+= "Mode: {}, ".format(colorer(self
.mode
.upper()))
91 r
+= "Cached: {} ".format(colorer(self
.cached
))
92 r
+= "Linker: {}".format(colorer(self
.linker
))
95 class SoCIORegion(SoCRegion
): pass
97 # SoCCSRRegion -------------------------------------------------------------------------------------
100 def __init__(self
, origin
, busword
, obj
):
102 self
.busword
= busword
105 # SoCBusHandler ------------------------------------------------------------------------------------
107 class SoCBusHandler(Module
):
108 supported_standard
= ["wishbone"]
109 supported_data_width
= [32, 64]
110 supported_address_width
= [32]
112 # Creation -------------------------------------------------------------------------------------
113 def __init__(self
, standard
, data_width
=32, address_width
=32, timeout
=1e6
, reserved_regions
={}):
114 self
.logger
= logging
.getLogger("SoCBusHandler")
115 self
.logger
.info("Creating Bus Handler...")
118 if standard
not in self
.supported_standard
:
119 self
.logger
.error("Unsupported {} {}, supporteds: {:s}".format(
120 colorer("Bus standard", color
="red"),
122 colorer(", ".join(self
.supported_standard
))))
126 if data_width
not in self
.supported_data_width
:
127 self
.logger
.error("Unsupported {} {}, supporteds: {:s}".format(
128 colorer("Data Width", color
="red"),
130 colorer(", ".join(str(x
) for x
in self
.supported_data_width
))))
133 # Check Address Width
134 if address_width
not in self
.supported_address_width
:
135 self
.logger
.error("Unsupported {} {}, supporteds: {:s}".format(
136 colorer("Address Width", color
="red"),
138 colorer(", ".join(str(x
) for x
in self
.supported_address_width
))))
142 self
.standard
= standard
143 self
.data_width
= data_width
144 self
.address_width
= address_width
149 self
.timeout
= timeout
150 self
.logger
.info("{}-bit {} Bus, {}GiB Address Space.".format(
151 colorer(data_width
), colorer(standard
), colorer(2**address_width
/2**30)))
153 # Adding reserved regions
154 self
.logger
.info("Adding {} Bus Regions...".format(colorer("reserved", color
="cyan")))
155 for name
, region
in reserved_regions
.items():
156 if isinstance(region
, int):
157 region
= SoCRegion(origin
=region
, size
=0x1000000)
158 self
.add_region(name
, region
)
160 self
.logger
.info("Bus Handler {}.".format(colorer("created", color
="green")))
162 # Add/Allog/Check Regions ----------------------------------------------------------------------
163 def add_region(self
, name
, region
):
165 if name
in self
.regions
.keys() or name
in self
.io_regions
.keys():
166 self
.logger
.error("{} already declared as Region:".format(colorer(name
, color
="red")))
167 self
.logger
.error(self
)
169 # Check if SoCIORegion
170 if isinstance(region
, SoCIORegion
):
171 self
.io_regions
[name
] = region
172 overlap
= self
.check_regions_overlap(self
.io_regions
)
173 if overlap
is not None:
174 self
.logger
.error("IO Region {} between {} and {}:".format(
175 colorer("overlap", color
="red"),
177 colorer(overlap
[1])))
178 self
.logger
.error(str(self
.io_regions
[overlap
[0]]))
179 self
.logger
.error(str(self
.io_regions
[overlap
[1]]))
181 self
.logger
.info("{} Region {} at {}.".format(
182 colorer(name
, color
="underline"),
183 colorer("added", color
="green"),
186 elif isinstance(region
, SoCRegion
):
187 # If no origin specified, allocate region.
188 if region
.origin
is None:
190 region
= self
.alloc_region(name
, region
.size
, region
.cached
)
191 self
.regions
[name
] = region
192 # Else add region and check for overlaps.
194 if not region
.cached
:
195 if not self
.check_region_is_io(region
):
196 self
.logger
.error("{} Region {}: {}.".format(
198 colorer("not in IO region", color
="red"),
200 self
.logger
.error(self
)
202 self
.regions
[name
] = region
203 overlap
= self
.check_regions_overlap(self
.regions
)
204 if overlap
is not None:
205 self
.logger
.error("Region {} between {} and {}:".format(
206 colorer("overlap", color
="red"),
208 colorer(overlap
[1])))
209 self
.logger
.error(str(self
.regions
[overlap
[0]]))
210 self
.logger
.error(str(self
.regions
[overlap
[1]]))
212 self
.logger
.info("{} Region {} at {}.".format(
213 colorer(name
, color
="underline"),
214 colorer("allocated" if allocated
else "added", color
="cyan" if allocated
else "green"),
217 self
.logger
.error("{} is not a supported Region.".format(colorer(name
, color
="red")))
220 def alloc_region(self
, name
, size
, cached
=True):
221 self
.logger
.info("Allocating {} Region of size {}...".format(
222 colorer("Cached" if cached
else "IO"),
223 colorer("0x{:08x}".format(size
))))
225 # Limit Search Regions
227 search_regions
= self
.io_regions
229 search_regions
= {"main": SoCRegion(origin
=0x00000000, size
=2**self
.address_width
-1)}
231 # Iterate on Search_Regions to find a Candidate
232 for _
, search_region
in search_regions
.items():
233 origin
= search_region
.origin
234 while (origin
+ size
) < (search_region
.origin
+ search_region
.size_pow2
):
235 # Create a Candicate.
236 candidate
= SoCRegion(origin
=origin
, size
=size
, cached
=cached
)
238 # Check Candidate does not overlap with allocated existing regions
239 for _
, allocated
in self
.regions
.items():
240 if self
.check_regions_overlap({"0": allocated
, "1": candidate
}) is not None:
241 origin
= allocated
.origin
+ allocated
.size_pow2
245 # If no overlap, the Candidate is selected
248 self
.logger
.error("Not enough Address Space to allocate Region.")
251 def check_regions_overlap(self
, regions
, check_linker
=False):
253 while i
< len(regions
):
254 n0
= list(regions
.keys())[i
]
256 for n1
in list(regions
.keys())[i
+1:]:
258 if r0
.linker
or r1
.linker
:
261 if r0
.origin
>= (r1
.origin
+ r1
.size_pow2
):
263 if r1
.origin
>= (r0
.origin
+ r0
.size_pow2
):
269 def check_region_is_in(self
, region
, container
):
271 if not (region
.origin
>= container
.origin
):
273 if not ((region
.origin
+ region
.size
) < (container
.origin
+ container
.size
)):
277 def check_region_is_io(self
, region
):
279 for _
, io_region
in self
.io_regions
.items():
280 if self
.check_region_is_in(region
, io_region
):
284 # Add Master/Slave -----------------------------------------------------------------------------
285 def add_adapter(self
, name
, interface
, direction
="m2s"):
286 assert direction
in ["m2s", "s2m"]
287 if interface
.data_width
!= self
.data_width
:
288 self
.logger
.info("{} Bus {} from {}-bit to {}-bit.".format(
290 colorer("converted", color
="cyan"),
291 colorer(interface
.data_width
),
292 colorer(self
.data_width
)))
293 new_interface
= wishbone
.Interface(data_width
=self
.data_width
)
294 if direction
== "m2s":
295 converter
= wishbone
.Converter(master
=interface
, slave
=new_interface
)
296 if direction
== "s2m":
297 converter
= wishbone
.Converter(master
=new_interface
, slave
=interface
)
298 self
.submodules
+= converter
303 def add_master(self
, name
=None, master
=None):
305 name
= "master{:d}".format(len(self
.masters
))
306 if name
in self
.masters
.keys():
307 self
.logger
.error("{} {} as Bus Master:".format(
309 colorer("already declared", color
="red")))
310 self
.logger
.error(self
)
312 master
= self
.add_adapter(name
, master
, "m2s")
313 self
.masters
[name
] = master
314 self
.logger
.info("{} {} as Bus Master.".format(
315 colorer(name
, color
="underline"),
316 colorer("added", color
="green")))
318 def add_slave(self
, name
=None, slave
=None, region
=None):
319 no_name
= name
is None
320 no_region
= region
is None
321 if no_name
and no_region
:
322 self
.logger
.error("Please {} {} or/and {} of Bus Slave.".format(
323 colorer("specify", color
="red"),
328 name
= "slave{:d}".format(len(self
.slaves
))
330 region
= self
.regions
.get(name
, None)
332 self
.logger
.error("{} Region {}.".format(
334 colorer("not found", color
="red")))
337 self
.add_region(name
, region
)
338 if name
in self
.slaves
.keys():
339 self
.logger
.error("{} {} as Bus Slave:".format(
341 colorer("already declared", color
="red")))
342 self
.logger
.error(self
)
344 slave
= self
.add_adapter(name
, slave
, "s2m")
345 self
.slaves
[name
] = slave
346 self
.logger
.info("{} {} as Bus Slave.".format(
347 colorer(name
, color
="underline"),
348 colorer("added", color
="green")))
350 # Str ------------------------------------------------------------------------------------------
352 r
= "{}-bit {} Bus, {}GiB Address Space.\n".format(
353 colorer(self
.data_width
), colorer(self
.standard
), colorer(2**self
.address_width
/2**30))
354 r
+= "IO Regions: ({})\n".format(len(self
.io_regions
.keys())) if len(self
.io_regions
.keys()) else ""
355 io_regions
= {k
: v
for k
, v
in sorted(self
.io_regions
.items(), key
=lambda item
: item
[1].origin
)}
356 for name
, region
in io_regions
.items():
357 r
+= colorer(name
, color
="underline") + " "*(20-len(name
)) + ": " + str(region
) + "\n"
358 r
+= "Bus Regions: ({})\n".format(len(self
.regions
.keys())) if len(self
.regions
.keys()) else ""
359 regions
= {k
: v
for k
, v
in sorted(self
.regions
.items(), key
=lambda item
: item
[1].origin
)}
360 for name
, region
in regions
.items():
361 r
+= colorer(name
, color
="underline") + " "*(20-len(name
)) + ": " + str(region
) + "\n"
362 r
+= "Bus Masters: ({})\n".format(len(self
.masters
.keys())) if len(self
.masters
.keys()) else ""
363 for name
in self
.masters
.keys():
364 r
+= "- {}\n".format(colorer(name
, color
="underline"))
365 r
+= "Bus Slaves: ({})\n".format(len(self
.slaves
.keys())) if len(self
.slaves
.keys()) else ""
366 for name
in self
.slaves
.keys():
367 r
+= "- {}\n".format(colorer(name
, color
="underline"))
371 # SoCLocHandler --------------------------------------------------------------------------------------
373 class SoCLocHandler(Module
):
374 # Creation -------------------------------------------------------------------------------------
375 def __init__(self
, name
, n_locs
):
380 # Add ------------------------------------------------------------------------------------------
381 def add(self
, name
, n
=None, use_loc_if_exists
=False):
383 if not (use_loc_if_exists
and name
in self
.locs
.keys()):
384 if name
in self
.locs
.keys():
385 self
.logger
.error("{} {} name {}.".format(
386 colorer(name
), self
.name
, colorer("already used", color
="red")))
387 self
.logger
.error(self
)
389 if n
in self
.locs
.values():
390 self
.logger
.error("{} {} Location {}.".format(
391 colorer(n
), self
.name
, colorer("already used", color
="red")))
392 self
.logger
.error(self
)
399 self
.logger
.error("{} {} Location should be {}.".format(
402 colorer("positive", color
="red")))
405 self
.logger
.error("{} {} Location {} than maximum: {}.".format(
408 colorer("higher", color
="red"),
409 colorer(self
.n_locs
)))
414 self
.logger
.info("{} {} {} at Location {}.".format(
415 colorer(name
, color
="underline"),
417 colorer("allocated" if allocated
else "added", color
="cyan" if allocated
else "green"),
420 # Alloc ----------------------------------------------------------------------------------------
421 def alloc(self
, name
):
422 for n
in range(self
.n_locs
):
423 if n
not in self
.locs
.values():
425 self
.logger
.error("Not enough Locations.")
426 self
.logger
.error(self
)
429 # Str ------------------------------------------------------------------------------------------
431 r
= "{} Locations: ({})\n".format(self
.name
, len(self
.locs
.keys())) if len(self
.locs
.keys()) else ""
432 locs
= {k
: v
for k
, v
in sorted(self
.locs
.items(), key
=lambda item
: item
[1])}
434 for name
in locs
.keys():
435 if len(name
) > length
: length
= len(name
)
436 for name
in locs
.keys():
437 r
+= "- {}{}: {}\n".format(colorer(name
, color
="underline"), " "*(length
+ 1 - len(name
)), colorer(self
.locs
[name
]))
440 # SoCCSRHandler ------------------------------------------------------------------------------------
442 class SoCCSRHandler(SoCLocHandler
):
443 supported_data_width
= [8, 32]
444 supported_address_width
= [14+i
for i
in range(4)]
445 supported_alignment
= [32, 64]
446 supported_paging
= [0x800*2**i
for i
in range(4)]
448 # Creation -------------------------------------------------------------------------------------
449 def __init__(self
, data_width
=32, address_width
=14, alignment
=32, paging
=0x800, reserved_csrs
={}):
450 SoCLocHandler
.__init
__(self
, "CSR", n_locs
=alignment
//8*(2**address_width
)//paging
)
451 self
.logger
= logging
.getLogger("SoCCSRHandler")
452 self
.logger
.info("Creating CSR Handler...")
455 if data_width
not in self
.supported_data_width
:
456 self
.logger
.error("Unsupported {} {}, supporteds: {:s}".format(
457 colorer("Data Width", color
="red"),
459 colorer(", ".join(str(x
) for x
in self
.supported_data_width
))))
462 # Check Address Width
463 if address_width
not in self
.supported_address_width
:
464 self
.logger
.error("Unsupported {} {} supporteds: {:s}".format(
465 colorer("Address Width", color
="red"),
466 colorer(address_width
),
467 colorer(", ".join(str(x
) for x
in self
.supported_address_width
))))
471 if alignment
not in self
.supported_alignment
:
472 self
.logger
.error("Unsupported {}: {} supporteds: {:s}".format(
473 colorer("Alignment", color
="red"),
475 colorer(", ".join(str(x
) for x
in self
.supported_alignment
))))
477 if data_width
> alignment
:
478 self
.logger
.error("Alignment ({}) {} Data Width ({})".format(
480 colorer("should be >=", color
="red"),
481 colorer(data_width
)))
485 if paging
not in self
.supported_paging
:
486 self
.logger
.error("Unsupported {} 0x{}, supporteds: {:s}".format(
487 colorer("Paging", color
="red"),
488 colorer("{:x}".format(paging
)),
489 colorer(", ".join("0x{:x}".format(x
) for x
in self
.supported_paging
))))
493 self
.data_width
= data_width
494 self
.address_width
= address_width
495 self
.alignment
= alignment
499 self
.logger
.info("{}-bit CSR Bus, {}-bit Aligned, {}KiB Address Space, {}B Paging (Up to {} Locations).".format(
500 colorer(self
.data_width
),
501 colorer(self
.alignment
),
502 colorer(2**self
.address_width
/2**10),
503 colorer(self
.paging
),
504 colorer(self
.n_locs
)))
506 # Adding reserved CSRs
507 self
.logger
.info("Adding {} CSRs...".format(colorer("reserved", color
="cyan")))
508 for name
, n
in reserved_csrs
.items():
511 self
.logger
.info("CSR Handler {}.".format(colorer("created", color
="green")))
513 # Update CSR Alignment ----------------------------------------------------------------------------
514 def update_alignment(self
, alignment
):
516 if alignment
not in self
.supported_alignment
:
517 self
.logger
.error("Unsupported {}: {} supporteds: {:s}".format(
518 colorer("Alignment", color
="red"),
520 colorer(", ".join(str(x
) for x
in self
.supported_alignment
))))
522 self
.logger
.info("Alignment {} from {}-bit to {}-bit.".format(
523 colorer("updated", color
="cyan"),
524 colorer(self
.alignment
),
526 self
.alignment
= alignment
528 # Add Master -----------------------------------------------------------------------------------
529 def add_master(self
, name
=None, master
=None):
531 name
= "master{:d}".format(len(self
.masters
))
532 if name
in self
.masters
.keys():
533 self
.logger
.error("{} {} as CSR Master:".format(
535 colorer("already declared", color
="red")))
536 self
.logger
.error(self
)
538 if master
.data_width
!= self
.data_width
:
539 self
.logger
.error("{} Master/Handler Data Width {} ({} vs {}).".format(
541 colorer("missmatch", color
="red"),
542 colorer(master
.data_width
),
543 colorer(self
.data_width
)))
545 self
.masters
[name
] = master
546 self
.logger
.info("{} {} as CSR Master.".format(
547 colorer(name
, color
="underline"),
548 colorer("added", color
="green")))
550 # Add Region -----------------------------------------------------------------------------------
551 def add_region(self
, name
, region
):
553 self
.regions
[name
] = region
555 # Address map ----------------------------------------------------------------------------------
556 def address_map(self
, name
, memory
):
557 if memory
is not None:
558 name
= name
+ "_" + memory
.name_override
559 if self
.locs
.get(name
, None) is None:
560 self
.logger
.error("CSR {} {}.".format(
562 colorer("not found", color
="red")))
563 self
.logger
.error(self
)
565 return self
.locs
[name
]
567 # Str ------------------------------------------------------------------------------------------
569 r
= "{}-bit CSR Bus, {}-bit Aligned, {}KiB Address Space, {}B Paging (Up to {} Locations).\n".format(
570 colorer(self
.data_width
),
571 colorer(self
.alignment
),
572 colorer(2**self
.address_width
/2**10),
573 colorer(self
.paging
),
574 colorer(self
.n_locs
))
575 r
+= SoCLocHandler
.__str
__(self
)
579 # SoCIRQHandler ------------------------------------------------------------------------------------
581 class SoCIRQHandler(SoCLocHandler
):
582 # Creation -------------------------------------------------------------------------------------
583 def __init__(self
, n_irqs
=32, reserved_irqs
={}):
584 SoCLocHandler
.__init
__(self
, "IRQ", n_locs
=n_irqs
)
585 self
.logger
= logging
.getLogger("SoCIRQHandler")
586 self
.logger
.info("Creating IRQ Handler...")
590 self
.logger
.error("Unsupported IRQs number: {} supporteds: {:s}".format(
591 colorer(n
, color
="red"), colorer("Up to 32", color
="green")))
595 self
.logger
.info("IRQ Handler (up to {} Locations).".format(colorer(n_irqs
)))
597 # Adding reserved IRQs
598 self
.logger
.info("Adding {} IRQs...".format(colorer("reserved", color
="cyan")))
599 for name
, n
in reserved_irqs
.items():
602 self
.logger
.info("IRQ Handler {}.".format(colorer("created", color
="green")))
604 # Str ------------------------------------------------------------------------------------------
606 r
="IRQ Handler (up to {} Locations).\n".format(colorer(self
.n_locs
))
607 r
+= SoCLocHandler
.__str
__(self
)
611 # SoCController ------------------------------------------------------------------------------------
613 class SoCController(Module
, AutoCSR
):
615 self
._reset
= CSRStorage(1, description
="""
616 Write a ``1`` to this register to reset the SoC.""")
617 self
._scratch
= CSRStorage(32, reset
=0x12345678, description
="""
618 Use this register as a scratch space to verify that software read/write accesses
619 to the Wishbone/CSR bus are working correctly. The initial reset value of 0x1234578
620 can be used to verify endianness.""")
621 self
._bus
_errors
= CSRStatus(32, description
="""
622 Total number of Wishbone bus errors (timeouts) since last reset.""")
627 self
.reset
= Signal()
628 self
.comb
+= self
.reset
.eq(self
._reset
.re
)
631 self
.bus_error
= Signal()
632 bus_errors
= Signal(32)
634 If(bus_errors
!= (2**len(bus_errors
)-1),
635 If(self
.bus_error
, bus_errors
.eq(bus_errors
+ 1))
637 self
.comb
+= self
._bus
_errors
.status
.eq(bus_errors
)
639 # SoC ----------------------------------------------------------------------------------------------
643 def __init__(self
, platform
, sys_clk_freq
,
645 bus_standard
= "wishbone",
647 bus_address_width
= 32,
649 bus_reserved_regions
= {},
652 csr_address_width
= 14,
655 csr_reserved_csrs
= {},
658 irq_reserved_irqs
= {},
661 self
.logger
= logging
.getLogger("SoC")
662 self
.logger
.info(colorer(" __ _ __ _ __ ", color
="bright"))
663 self
.logger
.info(colorer(" / / (_) /____ | |/_/ ", color
="bright"))
664 self
.logger
.info(colorer(" / /__/ / __/ -_)> < ", color
="bright"))
665 self
.logger
.info(colorer(" /____/_/\\__/\\__/_/|_| ", color
="bright"))
666 self
.logger
.info(colorer(" Build your hardware, easily!", color
="bright"))
668 self
.logger
.info(colorer("-"*80, color
="bright"))
669 self
.logger
.info(colorer("Creating SoC... ({})".format(build_time())))
670 self
.logger
.info(colorer("-"*80, color
="bright"))
671 self
.logger
.info("FPGA device : {}.".format(platform
.device
))
672 self
.logger
.info("System clock: {:3.2f}MHz.".format(sys_clk_freq
/1e6
))
674 # SoC attributes ---------------------------------------------------------------------------
675 self
.platform
= platform
676 self
.sys_clk_freq
= sys_clk_freq
678 self
.csr_regions
= {}
680 # SoC Bus Handler --------------------------------------------------------------------------
681 self
.submodules
.bus
= SoCBusHandler(
682 standard
= bus_standard
,
683 data_width
= bus_data_width
,
684 address_width
= bus_address_width
,
685 timeout
= bus_timeout
,
686 reserved_regions
= bus_reserved_regions
,
689 # SoC Bus Handler --------------------------------------------------------------------------
690 self
.submodules
.csr
= SoCCSRHandler(
691 data_width
= csr_data_width
,
692 address_width
= csr_address_width
,
693 alignment
= csr_alignment
,
695 reserved_csrs
= csr_reserved_csrs
,
698 # SoC IRQ Handler --------------------------------------------------------------------------
699 self
.submodules
.irq
= SoCIRQHandler(
701 reserved_irqs
= irq_reserved_irqs
704 self
.logger
.info(colorer("-"*80, color
="bright"))
705 self
.logger
.info(colorer("Initial SoC:"))
706 self
.logger
.info(colorer("-"*80, color
="bright"))
707 self
.logger
.info(self
.bus
)
708 self
.logger
.info(self
.csr
)
709 self
.logger
.info(self
.irq
)
710 self
.logger
.info(colorer("-"*80, color
="bright"))
712 self
.add_config("CLOCK_FREQUENCY", int(sys_clk_freq
))
714 # SoC Helpers ----------------------------------------------------------------------------------
715 def check_if_exists(self
, name
):
716 if hasattr(self
, name
):
717 self
.logger
.error("{} SubModule already {}.".format(
719 colorer("declared", color
="red")))
722 def add_constant(self
, name
, value
=None):
724 if name
in self
.constants
.keys():
725 self
.logger
.error("{} Constant already {}.".format(
727 colorer("declared", color
="red")))
729 self
.constants
[name
] = SoCConstant(value
)
731 def add_config(self
, name
, value
=None):
732 name
= "CONFIG_" + name
733 if isinstance(value
, str):
734 self
.add_constant(name
+ "_" + value
)
736 self
.add_constant(name
, value
)
738 # SoC Main Components --------------------------------------------------------------------------
739 def add_controller(self
, name
="ctrl"):
740 self
.check_if_exists(name
)
741 setattr(self
.submodules
, name
, SoCController())
742 self
.csr
.add(name
, use_loc_if_exists
=True)
744 def add_ram(self
, name
, origin
, size
, contents
=[], mode
="rw"):
745 ram_bus
= wishbone
.Interface(data_width
=self
.bus
.data_width
)
746 ram
= wishbone
.SRAM(size
, bus
=ram_bus
, init
=contents
, read_only
=(mode
== "r"))
747 self
.bus
.add_slave(name
, ram
.bus
, SoCRegion(origin
=origin
, size
=size
, mode
=mode
))
748 self
.check_if_exists(name
)
749 self
.logger
.info("RAM {} {} {}.".format(
751 colorer("added", color
="green"),
752 self
.bus
.regions
[name
]))
753 setattr(self
.submodules
, name
, ram
)
755 def add_rom(self
, name
, origin
, size
, contents
=[]):
756 self
.add_ram(name
, origin
, size
, contents
, mode
="r")
758 def add_csr_bridge(self
, origin
):
759 self
.submodules
.csr_bridge
= wishbone2csr
.WB2CSR(
760 bus_csr
= csr_bus
.Interface(
761 address_width
= self
.csr
.address_width
,
762 data_width
= self
.csr
.data_width
))
763 csr_size
= 2**(self
.csr
.address_width
+ 2)
764 csr_region
= SoCRegion(origin
=origin
, size
=csr_size
, cached
=False)
765 self
.bus
.add_slave("csr", self
.csr_bridge
.wishbone
, csr_region
)
766 self
.csr
.add_master(name
="bridge", master
=self
.csr_bridge
.csr
)
767 self
.add_config("CSR_DATA_WIDTH", self
.csr
.data_width
)
768 self
.add_config("CSR_ALIGNMENT", self
.csr
.alignment
)
770 def add_cpu(self
, name
="vexriscv", variant
="standard", cls
=None, reset_address
=None):
771 if name
not in cpu
.CPUS
.keys():
772 self
.logger
.error("{} CPU {}, supporteds: {}".format(
774 colorer("not supported", color
="red"),
775 colorer(", ".join(cpu
.CPUS
.keys()))))
778 cpu_cls
= cls
if cls
is not None else cpu
.CPUS
[name
]
779 self
.submodules
.cpu
= cpu_cls(self
.platform
, variant
)
780 # Update SoC with CPU constraints
781 for n
, (origin
, size
) in enumerate(self
.cpu
.io_regions
.items()):
782 self
.bus
.add_region("io{}".format(n
), SoCIORegion(origin
=origin
, size
=size
, cached
=False))
783 self
.mem_map
.update(self
.cpu
.mem_map
) # FIXME
784 self
.csr
.update_alignment(self
.cpu
.data_width
)
785 # Add Bus Masters/CSR/IRQs
786 if not isinstance(self
.cpu
, cpu
.CPUNone
):
787 if reset_address
is None:
788 reset_address
= self
.mem_map
["rom"]
789 self
.cpu
.set_reset_address(reset_address
)
790 for n
, cpu_bus
in enumerate(self
.cpu
.periph_buses
):
791 self
.bus
.add_master(name
="cpu_bus{}".format(n
), master
=cpu_bus
)
792 self
.csr
.add("cpu", use_loc_if_exists
=True)
793 if hasattr(self
.cpu
, "interrupt"):
794 for name
, loc
in self
.cpu
.interrupts
.items():
795 self
.irq
.add(name
, loc
)
796 self
.add_config("CPU_HAS_INTERRUPT")
797 if hasattr(self
, "ctrl"):
798 self
.comb
+= self
.cpu
.reset
.eq(self
.ctrl
.reset
)
799 self
.add_config("CPU_RESET_ADDR", reset_address
)
801 self
.add_config("CPU_TYPE", str(name
))
802 self
.add_config("CPU_VARIANT", str(variant
.split('+')[0]))
803 self
.add_constant("CONFIG_CPU_HUMAN_NAME", getattr(self
.cpu
, "human_name", "Unknown"))
804 if hasattr(self
.cpu
, "nop"):
805 self
.add_constant("CONFIG_CPU_NOP", self
.cpu
.nop
)
807 def add_timer(self
, name
="timer0"):
808 self
.check_if_exists(name
)
809 setattr(self
.submodules
, name
, Timer())
810 self
.csr
.add(name
, use_loc_if_exists
=True)
811 if hasattr(self
.cpu
, "interrupt"):
812 self
.irq
.add(name
, use_loc_if_exists
=True)
814 # SoC finalization -----------------------------------------------------------------------------
815 def do_finalize(self
):
816 self
.logger
.info(colorer("-"*80, color
="bright"))
817 self
.logger
.info(colorer("Finalized SoC:"))
818 self
.logger
.info(colorer("-"*80, color
="bright"))
819 self
.logger
.info(self
.bus
)
820 self
.logger
.info(self
.csr
)
821 self
.logger
.info(self
.irq
)
822 self
.logger
.info(colorer("-"*80, color
="bright"))
824 # SoC Bus Interconnect ---------------------------------------------------------------------
825 bus_masters
= self
.bus
.masters
.values()
826 bus_slaves
= [(self
.bus
.regions
[n
].decoder(self
.bus
), s
) for n
, s
in self
.bus
.slaves
.items()]
827 if len(bus_masters
) and len(bus_slaves
):
828 self
.submodules
.bus_interconnect
= wishbone
.InterconnectShared(
829 masters
= bus_masters
,
832 timeout_cycles
= self
.bus
.timeout
)
833 if hasattr(self
, "ctrl") and self
.bus
.timeout
is not None:
834 self
.comb
+= self
.ctrl
.bus_error
.eq(self
.bus_interconnect
.timeout
.error
)
836 # SoC CSR Interconnect ---------------------------------------------------------------------
837 self
.submodules
.csr_bankarray
= csr_bus
.CSRBankArray(self
,
838 address_map
= self
.csr
.address_map
,
839 data_width
= self
.csr
.data_width
,
840 address_width
= self
.csr
.address_width
,
841 alignment
= self
.csr
.alignment
,
842 paging
= self
.csr
.paging
,
843 soc_bus_data_width
= self
.bus
.data_width
)
844 if len(self
.csr
.masters
):
845 self
.submodules
.csr_interconnect
= csr_bus
.InterconnectShared(
846 masters
= list(self
.csr
.masters
.values()),
847 slaves
= self
.csr_bankarray
.get_buses())
850 for name
, csrs
, mapaddr
, rmap
in self
.csr_bankarray
.banks
:
851 self
.csr
.add_region(name
, SoCCSRRegion(
852 origin
= (self
.bus
.regions
["csr"].origin
+ self
.csr
.paging
*mapaddr
),
853 busword
= self
.csr
.data_width
,
857 for name
, memory
, mapaddr
, mmap
in self
.csr_bankarray
.srams
:
858 self
.csr
.add_region(name
+ "_" + memory
.name_override
, SoCCSRRegion(
859 origin
= (self
.bus
.regions
["csr"].origin
+ self
.csr
.paging
*mapaddr
),
860 busword
= self
.csr
.data_width
,
863 # Sort CSR regions by origin
864 self
.csr
.regions
= {k
: v
for k
, v
in sorted(self
.csr
.regions
.items(), key
=lambda item
: item
[1].origin
)}
866 # Add CSRs / Config items to constants
867 for name
, constant
in self
.csr_bankarray
.constants
:
868 self
.add_constant(name
+ "_" + constant
.name
, constant
.value
.value
)
870 # SoC CPU Check ----------------------------------------------------------------------------
871 if not isinstance(self
.cpu
, cpu
.CPUNone
):
872 if "sram" not in self
.bus
.regions
.keys():
873 self
.logger
.error("CPU needs {} Region to be {} as Bus or Linker Region.".format(
875 colorer("defined", color
="red")))
876 self
.logger
.error(self
.bus
)
878 cpu_reset_address_valid
= False
879 for name
, container
in self
.bus
.regions
.items():
880 if self
.bus
.check_region_is_in(
881 region
= SoCRegion(origin
=self
.cpu
.reset_address
, size
=self
.bus
.data_width
//8),
882 container
= container
):
883 cpu_reset_address_valid
= True
885 self
.cpu
.use_rom
= True
886 if not cpu_reset_address_valid
:
887 self
.logger
.error("CPU needs {} to be in a {} Region.".format(
888 colorer("reset address 0x{:08x}".format(self
.cpu
.reset_address
)),
889 colorer("defined", color
="red")))
890 self
.logger
.error(self
.bus
)
893 # SoC IRQ Interconnect ---------------------------------------------------------------------
894 if hasattr(self
, "cpu"):
895 if hasattr(self
.cpu
, "interrupt"):
896 for name
, loc
in sorted(self
.irq
.locs
.items()):
897 if name
in self
.cpu
.interrupts
.keys():
899 if hasattr(self
, name
):
900 module
= getattr(self
, name
)
901 if not hasattr(module
, "ev"):
902 self
.logger
.error("EventManager {} in {} SubModule.".format(
903 colorer("not found", color
="red"),
906 self
.comb
+= self
.cpu
.interrupt
[loc
].eq(module
.ev
.irq
)
907 self
.add_constant(name
+ "_INTERRUPT", loc
)
909 # SoC build ------------------------------------------------------------------------------------
910 def build(self
, *args
, **kwargs
):
911 return self
.platform
.build(self
, *args
, **kwargs
)
913 # LiteXSoC -----------------------------------------------------------------------------------------
916 # Add Identifier -------------------------------------------------------------------------------
917 def add_identifier(self
, name
="identifier", identifier
="LiteX SoC", with_build_time
=True):
918 self
.check_if_exists(name
)
920 identifier
+= " " + build_time()
921 setattr(self
.submodules
, name
, Identifier(identifier
))
922 self
.csr
.add(name
+ "_mem", use_loc_if_exists
=True)
924 # Add UART -------------------------------------------------------------------------------------
925 def add_uart(self
, name
, baudrate
=115200, fifo_depth
=16):
926 from litex
.soc
.cores
import uart
929 if name
in ["stub", "stream"]:
930 self
.submodules
.uart
= uart
.UART(tx_fifo_depth
=0, rx_fifo_depth
=0)
932 self
.comb
+= self
.uart
.sink
.ready
.eq(1)
935 elif name
in ["uartbone", "bridge"]:
936 self
.add_uartbone(baudrate
=baudrate
)
939 elif name
in ["crossover"]:
940 self
.submodules
.uart
= uart
.UARTCrossover()
943 elif name
in ["model", "sim"]:
944 self
.submodules
.uart_phy
= uart
.RS232PHYModel(self
.platform
.request("serial"))
945 self
.submodules
.uart
= ResetInserter()(uart
.UART(self
.uart_phy
,
946 tx_fifo_depth
= fifo_depth
,
947 rx_fifo_depth
= fifo_depth
))
950 elif name
in ["jtag_atlantic"]:
951 from litex
.soc
.cores
.jtag
import JTAGAtlantic
952 self
.submodules
.uart_phy
= JTAGAtlantic()
953 self
.submodules
.uart
= ResetInserter()(uart
.UART(self
.uart_phy
,
954 tx_fifo_depth
= fifo_depth
,
955 rx_fifo_depth
= fifo_depth
))
958 elif name
in ["jtag_uart"]:
959 from litex
.soc
.cores
.jtag
import JTAGPHY
960 self
.submodules
.uart_phy
= JTAGPHY(device
=self
.platform
.device
)
961 self
.submodules
.uart
= ResetInserter()(uart
.UART(self
.uart_phy
,
962 tx_fifo_depth
= fifo_depth
,
963 rx_fifo_depth
= fifo_depth
))
965 # USB ACM (with ValentyUSB core)
966 elif name
in ["usb_acm"]:
967 import valentyusb
.usbcore
.io
as usbio
968 import valentyusb
.usbcore
.cpu
.cdc_eptri
as cdc_eptri
969 usb_pads
= self
.platform
.request("usb")
970 usb_iobuf
= usbio
.IoBuf(usb_pads
.d_p
, usb_pads
.d_n
, usb_pads
.pullup
)
971 self
.submodules
.uart
= cdc_eptri
.CDCUsb(usb_iobuf
)
975 self
.submodules
.uart_phy
= uart
.UARTPHY(
976 pads
= self
.platform
.request(name
),
977 clk_freq
= self
.sys_clk_freq
,
979 self
.submodules
.uart
= ResetInserter()(uart
.UART(self
.uart_phy
,
980 tx_fifo_depth
= fifo_depth
,
981 rx_fifo_depth
= fifo_depth
))
983 self
.csr
.add("uart_phy", use_loc_if_exists
=True)
984 self
.csr
.add("uart", use_loc_if_exists
=True)
985 if hasattr(self
.cpu
, "interrupt"):
986 self
.irq
.add("uart", use_loc_if_exists
=True)
988 self
.add_constant("UART_POLLING")
990 # Add UARTbone ---------------------------------------------------------------------------------
991 def add_uartbone(self
, name
="serial", baudrate
=115200):
992 from litex
.soc
.cores
import uart
993 self
.submodules
.uartbone
= uart
.UARTBone(
994 pads
= self
.platform
.request(name
),
995 clk_freq
= self
.sys_clk_freq
,
997 self
.bus
.add_master(name
="uartbone", master
=self
.uartbone
.wishbone
)
999 # Add SDRAM ------------------------------------------------------------------------------------
1000 def add_sdram(self
, name
, phy
, module
, origin
, size
=None,
1001 l2_cache_size
= 8192,
1002 l2_cache_min_data_width
= 128,
1003 l2_cache_reverse
= True,
1004 l2_cache_full_memory_we
= True,
1008 from litedram
.common
import LiteDRAMNativePort
1009 from litedram
.core
import LiteDRAMCore
1010 from litedram
.frontend
.wishbone
import LiteDRAMWishbone2Native
1011 from litedram
.frontend
.axi
import LiteDRAMAXI2Native
1014 self
.submodules
.sdram
= LiteDRAMCore(
1016 geom_settings
= module
.geom_settings
,
1017 timing_settings
= module
.timing_settings
,
1018 clk_freq
= self
.sys_clk_freq
,
1020 self
.csr
.add("sdram")
1022 # Compute/Check SDRAM size
1023 sdram_size
= 2**(module
.geom_settings
.bankbits
+
1024 module
.geom_settings
.rowbits
+
1025 module
.geom_settings
.colbits
)*phy
.settings
.databits
//8
1026 if size
is not None:
1027 sdram_size
= min(sdram_size
, size
)
1030 self
.bus
.add_region("main_ram", SoCRegion(origin
=origin
, size
=sdram_size
))
1032 # SoC [<--> L2 Cache] <--> LiteDRAM --------------------------------------------------------
1033 if len(self
.cpu
.memory_buses
):
1034 # When CPU has at least a direct memory bus, connect them directly to LiteDRAM.
1035 for mem_bus
in self
.cpu
.memory_buses
:
1036 # Request a LiteDRAM native port.
1037 port
= self
.sdram
.crossbar
.get_port()
1038 port
.data_width
= 2**int(log2(port
.data_width
)) # Round to nearest power of 2.
1040 # Check if bus is an AXI bus and connect it.
1041 if isinstance(mem_bus
, axi
.AXIInterface
):
1042 # If same data_width, connect it directly.
1043 if port
.data_width
== mem_bus
.data_width
:
1044 self
.logger
.info("Matching AXI MEM data width ({})\n".format(port
.data_width
))
1045 self
.submodules
+= LiteDRAMAXI2Native(
1046 axi
= self
.cpu
.mem_axi
,
1048 base_address
= self
.bus
.regions
["main_ram"].origin
)
1049 # If different data_width, do the adaptation and connect it via Wishbone.
1051 self
.logger
.info("Converting MEM data width: {} to {} via Wishbone".format(
1053 self
.cpu
.mem_axi
.data_width
))
1054 # FIXME: replace WB data-width converter with native AXI converter!!!
1055 mem_wb
= wishbone
.Interface(
1056 data_width
= self
.cpu
.mem_axi
.data_width
,
1057 adr_width
= 32-log2_int(self
.cpu
.mem_axi
.data_width
//8))
1058 # NOTE: AXI2Wishbone FSMs must be reset with the CPU!
1059 mem_a2w
= ResetInserter()(axi
.AXI2Wishbone(
1060 axi
= self
.cpu
.mem_axi
,
1063 self
.comb
+= mem_a2w
.reset
.eq(ResetSignal() | self
.cpu
.reset
)
1064 self
.submodules
+= mem_a2w
1065 litedram_wb
= wishbone
.Interface(port
.data_width
)
1066 self
.submodules
+= LiteDRAMWishbone2Native(
1067 wishbone
= litedram_wb
,
1069 base_address
= origin
)
1070 self
.submodules
+= wishbone
.Converter(mem_wb
, litedram_wb
)
1071 # Check if bus is a Native bus and connect it.
1072 if isinstance(mem_bus
, LiteDRAMNativePort
):
1073 # If same data_width, connect it directly.
1074 if port
.data_width
== mem_bus
.data_width
:
1075 self
.comb
+= mem_bus
.cmd
.connect(port
.cmd
)
1076 self
.comb
+= mem_bus
.wdata
.connect(port
.wdata
)
1077 self
.comb
+= port
.rdata
.connect(mem_bus
.rdata
)
1080 raise NotImplementedError
1082 # When CPU has no direct memory interface, create a Wishbone Slave interface to LiteDRAM.
1084 # Request a LiteDRAM native port.
1085 port
= self
.sdram
.crossbar
.get_port()
1086 port
.data_width
= 2**int(log2(port
.data_width
)) # Round to nearest power of 2.
1088 # Create Wishbone Slave.
1089 wb_sdram
= wishbone
.Interface()
1090 self
.bus
.add_slave("main_ram", wb_sdram
)
1093 if l2_cache_size
!= 0:
1094 # Insert L2 cache inbetween Wishbone bus and LiteDRAM
1095 l2_cache_size
= max(l2_cache_size
, int(2*port
.data_width
/8)) # Use minimal size if lower
1096 l2_cache_size
= 2**int(log2(l2_cache_size
)) # Round to nearest power of 2
1097 l2_cache_data_width
= max(port
.data_width
, l2_cache_min_data_width
)
1098 l2_cache
= wishbone
.Cache(
1099 cachesize
= l2_cache_size
//4,
1101 slave
= wishbone
.Interface(l2_cache_data_width
),
1102 reverse
= l2_cache_reverse
)
1103 if l2_cache_full_memory_we
:
1104 l2_cache
= FullMemoryWE()(l2_cache
)
1105 self
.submodules
.l2_cache
= l2_cache
1106 litedram_wb
= self
.l2_cache
.slave
1108 litedram_wb
= wishbone
.Interface(port
.data_width
)
1109 self
.submodules
+= wishbone
.Converter(wb_sdram
, litedram_wb
)
1110 self
.add_config("L2_SIZE", l2_cache_size
)
1112 # Wishbone Slave <--> LiteDRAM bridge
1113 self
.submodules
.wishbone_bridge
= LiteDRAMWishbone2Native(litedram_wb
, port
,
1114 base_address
= self
.bus
.regions
["main_ram"].origin
)
1116 # Add Ethernet ---------------------------------------------------------------------------------
1117 def add_ethernet(self
, name
="ethmac", phy
=None):
1119 from liteeth
.mac
import LiteEthMAC
1121 ethmac
= LiteEthMAC(
1124 interface
= "wishbone",
1125 endianness
= self
.cpu
.endianness
)
1126 setattr(self
.submodules
, name
, ethmac
)
1127 ethmac_region
= SoCRegion(origin
=self
.mem_map
.get(name
, None), size
=0x2000, cached
=False)
1128 self
.bus
.add_slave(name
=name
, slave
=ethmac
.bus
, region
=ethmac_region
)
1130 self
.add_interrupt(name
)
1131 # Timing constraints
1132 if hasattr(phy
, "crg"):
1133 eth_rx_clk
= phy
.crg
.cd_eth_rx
.clk
1134 eth_tx_clk
= phy
.crg
.cd_eth_tx
.clk
1136 eth_rx_clk
= phy
.cd_eth_rx
.clk
1137 eth_tx_clk
= phy
.cd_eth_tx
.clk
1138 self
.platform
.add_period_constraint(eth_rx_clk
, 1e9
/phy
.rx_clk_freq
)
1139 self
.platform
.add_period_constraint(eth_tx_clk
, 1e9
/phy
.tx_clk_freq
)
1140 self
.platform
.add_false_path_constraints(
1141 self
.crg
.cd_sys
.clk
,
1145 # Add Etherbone --------------------------------------------------------------------------------
1146 def add_etherbone(self
, name
="etherbone", phy
=None, clock_domain
=None,
1147 mac_address
= 0x10e2d5000000,
1148 ip_address
= "192.168.1.50",
1151 from liteeth
.core
import LiteEthUDPIPCore
1152 from liteeth
.frontend
.etherbone
import LiteEthEtherbone
1154 ethcore
= LiteEthUDPIPCore(
1156 mac_address
= mac_address
,
1157 ip_address
= ip_address
,
1158 clk_freq
= self
.clk_freq
)
1159 if clock_domain
is not None: # FIXME: Could probably be avoided.
1160 ethcore
= ClockDomainsRenamer("eth_tx")(ethcore
)
1161 self
.submodules
+= ethcore
1163 # Clock domain renaming
1164 if clock_domain
is not None: # FIXME: Could probably be avoided.
1165 self
.clock_domains
.cd_etherbone
= ClockDomain("etherbone")
1166 self
.comb
+= self
.cd_etherbone
.clk
.eq(ClockSignal(clock_domain
))
1167 self
.comb
+= self
.cd_etherbone
.rst
.eq(ResetSignal(clock_domain
))
1168 clock_domain
= "etherbone"
1170 clock_domain
= "sys"
1173 etherbone
= LiteEthEtherbone(ethcore
.udp
, udp_port
, cd
=clock_domain
)
1174 setattr(self
.submodules
, name
, etherbone
)
1175 self
.add_wb_master(etherbone
.wishbone
.bus
)
1176 # Timing constraints
1177 if hasattr(phy
, "crg"):
1178 eth_rx_clk
= phy
.crg
.cd_eth_rx
.clk
1179 eth_tx_clk
= phy
.crg
.cd_eth_tx
.clk
1181 eth_rx_clk
= phy
.cd_eth_rx
.clk
1182 eth_tx_clk
= phy
.cd_eth_tx
.clk
1183 self
.platform
.add_period_constraint(eth_rx_clk
, 1e9
/phy
.rx_clk_freq
)
1184 self
.platform
.add_period_constraint(eth_tx_clk
, 1e9
/phy
.tx_clk_freq
)
1185 self
.platform
.add_false_path_constraints(
1186 self
.crg
.cd_sys
.clk
,
1190 # Add SPI Flash --------------------------------------------------------------------------------
1191 def add_spi_flash(self
, name
="spiflash", mode
="4x", dummy_cycles
=None, clk_freq
=None):
1192 assert dummy_cycles
is not None # FIXME: Get dummy_cycles from SPI Flash
1193 assert mode
in ["4x"] # FIXME: Add 1x support.
1194 if clk_freq
is None: clk_freq
= self
.clk_freq
/2 # FIXME: Get max clk_freq from SPI Flash
1195 spiflash
= SpiFlash(
1196 pads
= self
.platform
.request(name
+ mode
),
1197 dummy
= dummy_cycles
,
1198 div
= ceil(self
.clk_freq
/clk_freq
),
1199 with_bitbang
= True,
1200 endianness
= self
.cpu
.endianness
)
1201 spiflash
.add_clk_primitive(self
.platform
.device
)
1202 setattr(self
.submodules
, name
, spiflash
)
1203 self
.add_memory_region(name
, self
.mem_map
[name
], 0x1000000) # FIXME: Get size from SPI Flash
1204 self
.add_wb_slave(self
.mem_map
[name
], spiflash
.bus
)
1207 # Add SPI SDCard -------------------------------------------------------------------------------
1208 def add_spi_sdcard(self
, name
="spisdcard", clk_freq
=400e3
):
1209 pads
= self
.platform
.request(name
)
1210 if hasattr(pads
, "rst"):
1211 self
.comb
+= pads
.rst
.eq(0)
1212 spisdcard
= SPIMaster(pads
, 8, self
.sys_clk_freq
, 400e3
)
1213 spisdcard
.add_clk_divider()
1214 setattr(self
.submodules
, name
, spisdcard
)