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Diffstat (limited to 'decoders/mx25lxx05d/pd.py')
-rw-r--r-- | decoders/mx25lxx05d/pd.py | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/decoders/mx25lxx05d/pd.py b/decoders/mx25lxx05d/pd.py deleted file mode 100644 index b5ccee0..0000000 --- a/decoders/mx25lxx05d/pd.py +++ /dev/null @@ -1,407 +0,0 @@ -## -## This file is part of the libsigrokdecode project. -## -## Copyright (C) 2011-2014 Uwe Hermann <uwe@hermann-uwe.de> -## -## This program is free software; you can redistribute it and/or modify -## it under the terms of the GNU General Public License as published by -## the Free Software Foundation; either version 2 of the License, or -## (at your option) any later version. -## -## This program is distributed in the hope that it will be useful, -## but WITHOUT ANY WARRANTY; without even the implied warranty of -## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -## GNU General Public License for more details. -## -## You should have received a copy of the GNU General Public License -## along with this program; if not, write to the Free Software -## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -## - -import sigrokdecode as srd - -# Dict which maps command IDs to their names and descriptions. -cmds = { - 0x06: ('WREN', 'Write enable'), - 0x04: ('WRDI', 'Write disable'), - 0x9f: ('RDID', 'Read identification'), - 0x05: ('RDSR', 'Read status register'), - 0x01: ('WRSR', 'Write status register'), - 0x03: ('READ', 'Read data'), - 0x0b: ('FAST/READ', 'Fast read data'), - 0xbb: ('2READ', '2x I/O read'), - 0x20: ('SE', 'Sector erase'), - 0xd8: ('BE', 'Block erase'), - 0x60: ('CE', 'Chip erase'), - 0xc7: ('CE2', 'Chip erase'), # Alternative command ID - 0x02: ('PP', 'Page program'), - 0xad: ('CP', 'Continuously program mode'), - 0xb9: ('DP', 'Deep power down'), - 0xab: ('RDP/RES', 'Release from deep powerdown / Read electronic ID'), - 0x90: ('REMS', 'Read electronic manufacturer & device ID'), - 0xef: ('REMS2', 'Read ID for 2x I/O mode'), - 0xb1: ('ENSO', 'Enter secured OTP'), - 0xc1: ('EXSO', 'Exit secured OTP'), - 0x2b: ('RDSCUR', 'Read security register'), - 0x2f: ('WRSCUR', 'Write security register'), - 0x70: ('ESRY', 'Enable SO to output RY/BY#'), - 0x80: ('DSRY', 'Disable SO to output RY/BY#'), -} - -device_name = { - 0x14: 'MX25L1605D', - 0x15: 'MX25L3205D', - 0x16: 'MX25L6405D', -} - -def cmd_annotation_classes(): - return tuple([tuple([cmd[0].lower(), cmd[1]]) for cmd in cmds.values()]) - -def decode_status_reg(data): - # TODO: Additional per-bit(s) self.put() calls with correct start/end. - - # Bits[0:0]: WIP (write in progress) - s = 'W' if (data & (1 << 0)) else 'No w' - ret = '%srite operation in progress.\n' % s - - # Bits[1:1]: WEL (write enable latch) - s = '' if (data & (1 << 1)) else 'not ' - ret += 'Internal write enable latch is %sset.\n' % s - - # Bits[5:2]: Block protect bits - # TODO: More detailed decoding (chip-dependent). - ret += 'Block protection bits (BP3-BP0): 0x%x.\n' % ((data & 0x3c) >> 2) - - # Bits[6:6]: Continuously program mode (CP mode) - s = '' if (data & (1 << 6)) else 'not ' - ret += 'Device is %sin continuously program mode (CP mode).\n' % s - - # Bits[7:7]: SRWD (status register write disable) - s = 'not ' if (data & (1 << 7)) else '' - ret += 'Status register writes are %sallowed.\n' % s - - return ret - -class Decoder(srd.Decoder): - api_version = 2 - id = 'mx25lxx05d' - name = 'MX25Lxx05D' - longname = 'Macronix MX25Lxx05D' - desc = 'SPI (NOR) flash chip protocol.' - license = 'gplv2+' - inputs = ['logic'] - outputs = ['mx25lxx05d'] - annotations = cmd_annotation_classes() + ( - ('bits', 'Bits'), - ('bits2', 'Bits2'), - ('warnings', 'Warnings'), - ) - annotation_rows = ( - ('bits', 'Bits', (24, 25)), - ('commands', 'Commands', tuple(range(23 + 1))), - ('warnings', 'Warnings', (26,)), - ) - - def __init__(self, **kwargs): - self.state = None - self.cmdstate = 1 - self.addr = 0 - self.data = [] - - def start(self): - self.out_ann = self.register(srd.OUTPUT_ANN) - - def putx(self, data): - # Simplification, most annotations span exactly one SPI byte/packet. - self.put(self.ss, self.es, self.out_ann, data) - - def putb(self, data): - self.put(self.block_ss, self.block_es, self.out_ann, data) - - def handle_wren(self, mosi, miso): - self.putx([0, ['Command: %s' % cmds[self.state][1]]]) - self.state = None - - def handle_wrdi(self, mosi, miso): - pass # TODO - - # TODO: Check/display device ID / name - def handle_rdid(self, mosi, miso): - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.ss_block = self.ss - self.putx([2, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate == 2: - # Byte 2: Slave sends the JEDEC manufacturer ID. - self.putx([2, ['Manufacturer ID: 0x%02x' % miso]]) - elif self.cmdstate == 3: - # Byte 3: Slave sends the memory type (0x20 for this chip). - self.putx([2, ['Memory type: 0x%02x' % miso]]) - elif self.cmdstate == 4: - # Byte 4: Slave sends the device ID. - self.device_id = miso - self.putx([2, ['Device ID: 0x%02x' % miso]]) - - if self.cmdstate == 4: - # TODO: Check self.device_id is valid & exists in device_names. - # TODO: Same device ID? Check! - d = 'Device: Macronix %s' % device_name[self.device_id] - self.put(self.ss_block, self.es, self.out_ann, [0, [d]]) - self.state = None - else: - self.cmdstate += 1 - - def handle_rdsr(self, mosi, miso): - # Read status register: Master asserts CS#, sends RDSR command, - # reads status register byte. If CS# is kept asserted, the status - # register can be read continuously / multiple times in a row. - # When done, the master de-asserts CS# again. - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.putx([3, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate >= 2: - # Bytes 2-x: Slave sends status register as long as master clocks. - if self.cmdstate <= 3: # TODO: While CS# asserted. - self.putx([24, ['Status register: 0x%02x' % miso]]) - self.putx([25, [decode_status_reg(miso)]]) - - if self.cmdstate == 3: # TODO: If CS# got de-asserted. - self.state = None - return - - self.cmdstate += 1 - - def handle_wrsr(self, mosi, miso): - pass # TODO - - def handle_read(self, mosi, miso): - # Read data bytes: Master asserts CS#, sends READ command, sends - # 3-byte address, reads >= 1 data bytes, de-asserts CS#. - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.putx([5, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate in (2, 3, 4): - # Bytes 2/3/4: Master sends read address (24bits, MSB-first). - self.addr |= (mosi << ((4 - self.cmdstate) * 8)) - # self.putx([0, ['Read address, byte %d: 0x%02x' % \ - # (4 - self.cmdstate, mosi)]]) - if self.cmdstate == 4: - self.putx([24, ['Read address: 0x%06x' % self.addr]]) - self.addr = 0 - elif self.cmdstate >= 5: - # Bytes 5-x: Master reads data bytes (until CS# de-asserted). - # TODO: For now we hardcode 256 bytes per READ command. - if self.cmdstate <= 256 + 4: # TODO: While CS# asserted. - self.data.append(miso) - # self.putx([0, ['New read byte: 0x%02x' % miso]]) - - if self.cmdstate == 256 + 4: # TODO: If CS# got de-asserted. - # s = ', '.join(map(hex, self.data)) - s = ''.join(map(chr, self.data)) - self.putx([24, ['Read data']]) - self.putx([25, ['Read data: %s' % s]]) - self.data = [] - self.state = None - return - - self.cmdstate += 1 - - def handle_fast_read(self, mosi, miso): - # Fast read: Master asserts CS#, sends FAST READ command, sends - # 3-byte address + 1 dummy byte, reads >= 1 data bytes, de-asserts CS#. - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.putx([5, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate in (2, 3, 4): - # Bytes 2/3/4: Master sends read address (24bits, MSB-first). - self.putx([24, ['AD%d: 0x%02x' % (self.cmdstate - 1, mosi)]]) - if self.cmdstate == 2: - self.block_ss = self.ss - self.addr |= (mosi << ((4 - self.cmdstate) * 8)) - elif self.cmdstate == 5: - self.putx([24, ['Dummy byte: 0x%02x' % mosi]]) - self.block_es = self.es - self.putb([5, ['Read address: 0x%06x' % self.addr]]) - self.addr = 0 - elif self.cmdstate >= 6: - # Bytes 6-x: Master reads data bytes (until CS# de-asserted). - # TODO: For now we hardcode 32 bytes per FAST READ command. - if self.cmdstate == 6: - self.block_ss = self.ss - if self.cmdstate <= 32 + 5: # TODO: While CS# asserted. - self.data.append(miso) - if self.cmdstate == 32 + 5: # TODO: If CS# got de-asserted. - self.block_es = self.es - s = ' '.join([hex(b)[2:] for b in self.data]) - self.putb([25, ['Read data: %s' % s]]) - self.data = [] - self.state = None - return - - self.cmdstate += 1 - - def handle_2read(self, mosi, miso): - pass # TODO - - # TODO: Warn/abort if we don't see the necessary amount of bytes. - # TODO: Warn if WREN was not seen before. - def handle_se(self, mosi, miso): - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.addr = 0 - self.ss_block = self.ss - self.putx([8, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate in (2, 3, 4): - # Bytes 2/3/4: Master sends sector address (24bits, MSB-first). - self.addr |= (mosi << ((4 - self.cmdstate) * 8)) - # self.putx([0, ['Sector address, byte %d: 0x%02x' % \ - # (4 - self.cmdstate, mosi)]]) - - if self.cmdstate == 4: - d = 'Erase sector %d (0x%06x)' % (self.addr, self.addr) - self.put(self.ss_block, self.es, self.out_ann, [24, [d]]) - # TODO: Max. size depends on chip, check that too if possible. - if self.addr % 4096 != 0: - # Sector addresses must be 4K-aligned (same for all 3 chips). - d = 'Warning: Invalid sector address!' - self.put(self.ss_block, self.es, self.out_ann, [101, [d]]) - self.state = None - else: - self.cmdstate += 1 - - def handle_be(self, mosi, miso): - pass # TODO - - def handle_ce(self, mosi, miso): - pass # TODO - - def handle_ce2(self, mosi, miso): - pass # TODO - - def handle_pp(self, mosi, miso): - # Page program: Master asserts CS#, sends PP command, sends 3-byte - # page address, sends >= 1 data bytes, de-asserts CS#. - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.putx([12, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate in (2, 3, 4): - # Bytes 2/3/4: Master sends page address (24bits, MSB-first). - self.addr |= (mosi << ((4 - self.cmdstate) * 8)) - # self.putx([0, ['Page address, byte %d: 0x%02x' % \ - # (4 - self.cmdstate, mosi)]]) - if self.cmdstate == 4: - self.putx([24, ['Page address: 0x%06x' % self.addr]]) - self.addr = 0 - elif self.cmdstate >= 5: - # Bytes 5-x: Master sends data bytes (until CS# de-asserted). - # TODO: For now we hardcode 256 bytes per page / PP command. - if self.cmdstate <= 256 + 4: # TODO: While CS# asserted. - self.data.append(mosi) - # self.putx([0, ['New data byte: 0x%02x' % mosi]]) - - if self.cmdstate == 256 + 4: # TODO: If CS# got de-asserted. - # s = ', '.join(map(hex, self.data)) - s = ''.join(map(chr, self.data)) - self.putx([24, ['Page data']]) - self.putx([25, ['Page data: %s' % s]]) - self.data = [] - self.state = None - return - - self.cmdstate += 1 - - def handle_cp(self, mosi, miso): - pass # TODO - - def handle_dp(self, mosi, miso): - pass # TODO - - def handle_rdp_res(self, mosi, miso): - pass # TODO - - def handle_rems(self, mosi, miso): - if self.cmdstate == 1: - # Byte 1: Master sends command ID. - self.ss_block = self.ss - self.putx([16, ['Command: %s' % cmds[self.state][1]]]) - elif self.cmdstate in (2, 3): - # Bytes 2/3: Master sends two dummy bytes. - # TODO: Check dummy bytes? Check reply from device? - self.putx([24, ['Dummy byte: %s' % mosi]]) - elif self.cmdstate == 4: - # Byte 4: Master sends 0x00 or 0x01. - # 0x00: Master wants manufacturer ID as first reply byte. - # 0x01: Master wants device ID as first reply byte. - self.manufacturer_id_first = True if (mosi == 0x00) else False - d = 'manufacturer' if (mosi == 0x00) else 'device' - self.putx([24, ['Master wants %s ID first' % d]]) - elif self.cmdstate == 5: - # Byte 5: Slave sends manufacturer ID (or device ID). - self.ids = [miso] - d = 'Manufacturer' if self.manufacturer_id_first else 'Device' - self.putx([24, ['%s ID' % d]]) - elif self.cmdstate == 6: - # Byte 6: Slave sends device ID (or manufacturer ID). - self.ids.append(miso) - d = 'Manufacturer' if self.manufacturer_id_first else 'Device' - self.putx([24, ['%s ID' % d]]) - - if self.cmdstate == 6: - id = self.ids[1] if self.manufacturer_id_first else self.ids[0] - self.putx([24, ['Device: Macronix %s' % device_name[id]]]) - self.state = None - else: - self.cmdstate += 1 - - def handle_rems2(self, mosi, miso): - pass # TODO - - def handle_enso(self, mosi, miso): - pass # TODO - - def handle_exso(self, mosi, miso): - pass # TODO - - def handle_rdscur(self, mosi, miso): - pass # TODO - - def handle_wrscur(self, mosi, miso): - pass # TODO - - def handle_esry(self, mosi, miso): - pass # TODO - - def handle_dsry(self, mosi, miso): - pass # TODO - - def decode(self, ss, es, data): - - ptype, mosi, miso = data - - # if ptype == 'DATA': - # self.putx([0, ['MOSI: 0x%02x, MISO: 0x%02x' % (mosi, miso)]]) - - # if ptype == 'CS-CHANGE': - # if mosi == 1 and miso == 0: - # self.putx([0, ['Asserting CS#']]) - # elif mosi == 0 and miso == 1: - # self.putx([0, ['De-asserting CS#']]) - - if ptype != 'DATA': - return - - self.ss, self.es = ss, es - - # If we encountered a known chip command, enter the resp. state. - if self.state is None: - self.state = mosi - self.cmdstate = 1 - - # Handle commands. - if self.state in cmds: - s = 'handle_%s' % cmds[self.state][0].lower().replace('/', '_') - handle_reg = getattr(self, s) - handle_reg(mosi, miso) - else: - self.putx([24, ['Unknown command: 0x%02x' % mosi]]) - self.state = None |