-
-
-# map pins to litex name conventions, primarily for use in coriolis2
-# yes this is a mess. it'll do the job though. improvements later
-def pinparse(psp, pinspec):
- p = Parse(pinspec, verify=False)
- pinmap = {}
- litexmap = {}
-
- print (p.muxed_cells)
- print (p.muxed_cells_bank)
-
- # TODO - Turn the number of pins per side into a variable?
- ps = [''] * 64
- pn = [''] * 64
- pe = [''] * 64
- pw = [''] * 64
- pads = {'N': pn, 'S': ps, 'E': pe, 'W': pw}
-
- iopads = []
- domains = {}
- clocks = {}
-
- n_intpower = 0
- n_extpower = 0
- for (padnum, name, x), bank in zip(p.muxed_cells, p.muxed_cells_bank):
- orig_name = name
- litex_name = None
- domain = None # TODO, get this from the PinSpec. sigh
- padnum = int(padnum)
- start = p.bankstart[bank]
- banknum = padnum - start
- print ("bank", bank, banknum, "padname", name, padnum, x)
- padbank = pads[bank]
- pad = None
- # VSS
- if name.startswith('vss'):
- name = 'p_%s_' % name[:-2] + name[-1]
- if 'i' in name:
- name = 'ground_' + name[-1]
- name2 = 'vss'
- else:
- name = 'ioground_' + name[-1]
- name2 = 'iovss'
- pad = [name, name2]
- # VDD
- elif name.startswith('vdd'):
- if 'i' in name:
- n_intpower += 1
- name = 'power_' + name[-1]
- name2 = 'vdd'
- else:
- n_extpower += 1
- name = 'iopower_' + name[-1]
- name2 = 'iovdd'
- pad = [name, name2]
- # SYS
- elif name.startswith('sys'):
- domain = 'SYS'
- if name == 'sys_pllclk':
- pad = ["p_"+name, name, name]
- elif name == 'sys_rst':
- #name = 'p_sys_rst_1'
- pad = [name, name, name]
- padbank[banknum] = name
- print ("sys_rst add", bank, banknum, name)
- name = None
- elif name == 'sys_pllclk':
- name = None # ignore
- elif name == 'sys_pllvcout':
- name = 'sys_pll_vco_o'
- pad = ['p_' + name, name, name, "A"] # A for Analog
- elif name == 'sys_plltestout':
- name = 'sys_pll_testout_o'
- pad = ['p_' + name, name, name]
- elif name.startswith('sys_pllsel'):
- i = name[-1]
- name2 = 'sys_clksel_i(%s)' % i
- name = 'p_sys_clksel_' + i
- pad = [name, name2, name2]
- #if name:
- # iopads.append([pname, name, name])
- print ("sys pad", name)
- # SPI Card
- elif name.startswith('mspi0') or name.startswith('mspi1'):
- domain = 'MSPI'
- suffix = name[6:]
- if suffix == 'ck':
- suffix = 'clk'
- elif suffix == 'nss':
- suffix = 'cs_n'
- if name.startswith('mspi0'):
- prefix = 'spimaster_'
- else:
- prefix = 'spisdcard_'
- litex_name = name[:6] + suffix
- name = prefix + suffix
- pad = ['p_' + name, name, name]
- # SD/MMC
- elif name.startswith('sd0'):
- domain = 'SD'
- if name.startswith('sd0_d'):
- i = name[5:]
- name = 'sdcard_data' + i
- name2 = 'sdcard_data_%%s(%s)' % i
- pad = ['p_'+name, name, name2 % 'o', name2 % 'i', name2 % 'oe']
- elif name.startswith('sd0_cmd'):
- name = 'sdcard_cmd'
- name2 = 'sdcard_cmd_%s'
- pad = ['p_'+name, name, name2 % 'o', name2 % 'i', name2 % 'oe']
- else:
- name = 'sdcard_' + name[4:]
- pad = ['p_' + name, name, name]
- litex_name = orig_name[:4] + "_".join(name.split("_")[1:])
- # SDRAM
- elif name.startswith('sdr'):
- domain = 'SDR'
- if name == 'sdr_clk':
- name = 'sdram_clock'
- pad = ['p_' + name, name, name]
- elif name.startswith('sdr_ad'):
- i = name[6:]
- name = 'sdram_a_' + i
- name2 = 'sdram_a(%s)' % i
- pad = ['p_' + name, name2, name2]
- elif name.startswith('sdr_ba'):
- i = name[-1]
- name = 'sdram_ba_' + i
- name2 = 'sdram_ba(%s)' % i
- pad = ['p_' + name, name2, name2]
- elif name.startswith('sdr_dqm'):
- i = name[-1]
- name = 'sdram_dm_' + i
- name2 = 'sdram_dm(%s)' % i
- pad = ['p_' + name, name2, name2]
- elif name.startswith('sdr_d'):
- i = name[5:]
- name = 'sdram_dq_' + i
- name2 = 'sdram_dq_%%s(%s)' % i
- pad = ['p_'+name, name, name2 % 'o', name2 % 'i', name2 % 'oe']
- elif name == 'sdr_csn0':
- name = 'sdram_cs_n'
- pad = ['p_' + name, name, name]
- elif name[-1] == 'n':
- name = 'sdram_' + name[4:-1] + '_n'
- pad = ['p_' + name, name, name]
- else:
- name = 'sdram_' + name[4:]
- pad = ['p_' + name, name, name]
- litex_name = orig_name[:4] + "_".join(name.split("_")[1:])
- # UART
- elif name.startswith('uart'):
- domain = 'UART'
- name = 'uart_' + name[6:]
- pad = ['p_' + name, name, name]
- # GPIO
- elif name.startswith('gpio'):
- gbank = name[4]
- domain = 'GPIO'
- i = name[7:]
- name = 'gpio_' + i
- name2 = 'gpio_%%s(%s)' % i
- pad = ['p_' + name, name, name2 % 'o', name2 % 'i', name2 % 'oe']
- print ("GPIO pad", name, pad)
- litex_name = "gpio_%s" % gbank + "_".join(name.split("_")[1:])
- # I2C master-only
- elif name.startswith('mtwi'):
- domain = 'MTWI'
- suffix = name[4:]
- litex_name = 'mtwi' + suffix
- name = 'i2c' + suffix
- if name.startswith('i2c_sda'):
- name2 = 'i2c_sda_%s'
- pad = ['p_'+name, name, name2 % 'o', name2 % 'i', name2 % 'oe']
- print ("I2C pad", name, pad)
- else:
- pad = ['p_' + name, name, name]
- # I2C bi-directional
- elif name.startswith('twi'):
- domain = 'TWI'
- name = 'i2c' + name[3:]
- name2 = name + '_%s'
- pad = ['p_'+name, name, name2 % 'o', name2 % 'i', name2 % 'oe']
- print ("I2C pad", name, pad)
- # EINT
- elif name.startswith('eint'):
- domain = 'EINT'
- i = name[-1]
- name = 'eint_%s' % i
- name2 = 'eint_%s' % i
- pad = ['p_' + name, name2, name2]
- # PWM
- elif name.startswith('pwm'):
- domain = 'PWM'
- name = name[:-4]
- i = name[3:]
- name2 = 'pwm(%s)' % i
- pad = ['p_' + name, name2, name2]
- else:
- pad = ['p_' + name, name, name]
- print ("GPIO pad", name, pad)
-
- if litex_name is None:
- litex_name = name
-
- # JTAG domain
- if name and name.startswith('jtag'):
- domain = 'JTAG'
-
- if name and not name.startswith('p_'):
- if 'power' not in name and 'ground' not in name:
- name = 'p_' + name
- if name is not None:
- padbank[banknum] = name
- # create domains
- if domain is not None:
- if domain not in domains:
- domains[domain] = []
- domains[domain].append(name)
- dl = domain.lower()
- if domain in psp.clocks and orig_name.startswith(dl):
- clk = psp.clocks[domain]
- if clk.lower() in orig_name: # TODO, might over-match
- clocks[domain] = name
- # record remap
- pinmap[orig_name] = name
- litexmap[litex_name] = name
-
- # add pad to iopads
- if domain and pad is not None:
- # append direction from spec/domain. damn awkward processing
- # to find it.
- fn, name = orig_name.split("_")
- if domain == 'PWM':
- name = fn[3:]
- print (psp.byspec)
- spec = None
- for k in psp.byspec.keys():
- if k.startswith(domain):
- spec = psp.byspec[k]
- print ("spec found", domain, spec)
- assert spec is not None
- found = None
- for pname in spec:
- if pname.lower().startswith(name):
- found = pname
- print ("found spec", found)
- assert found is not None
- # whewwww. add the direction onto the pad spec list
- dirn = found[-1]
- if pad[-1] == 'A':
- pad[-1] += dirn
- else:
- pad.append(dirn)
- iopads.append(pad)
- elif pad is not None:
- iopads.append(pad)
-
- # not connected
- nc_idx = 0
- for pl in [pe, pw, pn, ps]:
- for i in range(len(pl)):
- if pl[i] == '':
- name = 'nc_%d' % nc_idx
- name2 = 'nc(%d)' % nc_idx
- pl[i] = name
- pinmap[name] = name
- iopads.append([name, name2, name2, "-"])
- nc_idx += 1
-
- print (p.bankstart)
- pprint(psp.clocks)
-
- print
- print ("N pads", pn)
- print ("S pads", ps)
- print ("E pads", pe)
- print ("W pads", pw)
-
- # do not want these
- del clocks['SYS']
- del domains['SYS']
-
- print ("chip domains (excluding sys-default)")
- pprint(domains)
- print ("chip clocks (excluding sys-default)")
- pprint(clocks)
- print ("pin spec")
- pprint(psp.byspec)
-
- chip = {
- 'pads.south' : ps,
- 'pads.east' : pe,
- 'pads.north' : pn,
- 'pads.west' : pw,
- 'pads.instances' : iopads,
- 'pins.specs' : psp.byspec,
- 'pins.map' : pinmap,
- 'litex.map' : litexmap,
- 'chip.domains' : domains,
- 'chip.clocks' : clocks,
- 'chip.n_intpower': n_intpower,
- 'chip.n_extpower': n_extpower,
- }
-
- return pinmap, chip
projects / pinmux.git / blobdiff