[libsigrokdecode.git] / decoders / mx25lxx05d.py

##
## This file is part of the sigrok project.
##
## Copyright (C) 2011-2012 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
##

#
# Macronix MX25Lxx05D SPI (NOR) flash chip decoder.
# Works for MX25L1605D/MX25L3205D/MX25L6405D.
#

#
# TODO: Description
#
# Details:
# http://www.macronix.com/QuickPlace/hq/PageLibrary4825740B00298A3B.nsf/h_Index/3F21BAC2E121E17848257639003A3146/$File/MX25L1605D-3205D-6405D-1.5.pdf
#

import sigrokdecode as srd

# States
IDLE = -1

# Chip commands (also used as additional decoder states).
CMD_WREN      = 0x06
CMD_WRDI      = 0x04
CMD_RDID      = 0x9f
CMD_RDSR      = 0x05
CMD_WRSR      = 0x01
CMD_READ      = 0x03
CMD_FAST_READ = 0x0b
CMD_2READ     = 0xbb
CMD_SE        = 0x20
CMD_BE        = 0xd8
CMD_CE        = 0x60
CMD_CE2       = 0xc7
CMD_PP        = 0x02
CMD_CP        = 0xad
CMD_DP        = 0xb9
# CMD_RDP       = 0xab
# CMD_RES       = 0xab
CMD_RDP_RES   = 0xab # Note: RDP/RES have the same ID.
CMD_REMS      = 0x90
CMD_REMS2     = 0xef
CMD_ENSO      = 0xb1
CMD_EXSO      = 0xc1
CMD_RDSCUR    = 0x2b
CMD_WRSCUR    = 0x2f
CMD_ESRY      = 0x70
CMD_DSRY      = 0x80

# TODO: (Short) command names as strings in a dict, too?

# Dict which maps command IDs to their description.
cmds = {
    CMD_WREN: 'Write enable',
    CMD_WRDI: 'Write disable',
    CMD_RDID: 'Read identification',
    CMD_RDSR: 'Read status register',
    CMD_WRSR: 'Write status register',
    CMD_READ: 'Read data',
    CMD_FAST_READ: 'Fast read data',
    CMD_2READ: '2x I/O read',
    CMD_SE: 'Sector erase',
    CMD_BE: 'Block erase',
    CMD_CE: 'Chip erase',
    CMD_CE2: 'Chip erase', # Alternative command ID
    CMD_PP: 'Page program',
    CMD_CP: 'Continuously program mode',
    CMD_DP: 'Deep power down',
    # CMD_RDP: 'Release from deep powerdown',
    # CMD_RES: 'Read electronic ID',
    CMD_RDP_RES: 'Release from deep powerdown / Read electronic ID',
    CMD_REMS: 'Read electronic manufacturer & device ID',
    CMD_REMS2: 'Read ID for 2x I/O mode',
    CMD_ENSO: 'Enter secured OTP',
    CMD_EXSO: 'Exit secured OTP',
    CMD_RDSCUR: 'Read security register',
    CMD_WRSCUR: 'Write security register',
    CMD_ESRY: 'Enable SO to output RY/BY#',
    CMD_DSRY: 'Disable SO to output RY/BY#',
}

device_name = {
    0x14: 'MX25L1605D',
    0x15: 'MX25L3205D',
    0x16: 'MX25L6405D',
}

class Decoder(srd.Decoder):
    id = 'mx25lxx05d'
    name = 'MX25Lxx05D'
    longname = 'Macronix MX25Lxx05D SPI flash chip decoder'
    desc = 'Macronix MX25Lxx05D SPI flash chip decoder'
    longdesc = 'TODO'
    author = 'Uwe Hermann'
    email = 'uwe@hermann-uwe.de'
    license = 'gplv2+'
    inputs = ['spi', 'spi', 'logic']
    outputs = ['mx25lxx05d']
    probes = [] # TODO: HOLD#, WP#/ACC
    options = {} # TODO
    annotations = [
        ['TODO', 'TODO'],
    ]

    def __init__(self, **kwargs):
        self.state = IDLE
        self.cmdstate = 1 # TODO

    def start(self, metadata):
        # self.out_proto = self.add(srd.OUTPUT_PROTO, 'mx25lxx05d')
        self.out_ann = self.add(srd.OUTPUT_ANN, 'mx25lxx05d')

    def report(self):
        pass

    def putann(self, data):
        # Simplification, most annotations span extactly one SPI byte/packet.
        self.put(self.ss, self.es, self.out_ann, data)

    def handle_wren(self, mosi, miso):
        self.putann([0, ['Command: %s' % cmds[self.cmd]]])
        self.state = IDLE

    # TODO: Check/display device ID / name
    def handle_rdid(self, mosi, miso):
        if self.cmdstate == 1:
            # Byte 1: Master sends command ID.
            self.start_sample = self.ss
            self.putann([0, ['Command: %s' % cmds[self.cmd]]])
        elif self.cmdstate == 2:
            # Byte 2: Slave sends the JEDEC manufacturer ID.
            self.putann([0, ['Manufacturer ID: 0x%02x' % miso]])
        elif self.cmdstate == 3:
            # Byte 3: Slave sends the memory type (0x20 for this chip).
            self.putann([0, ['Memory type: 0x%02x' % miso]])
        elif self.cmdstate == 4:
            # Byte 4: Slave sends the device ID.
            self.device_id = miso
            self.putann([0, ['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.start_sample, self.es, self.out_ann, [0, [d]])
            self.state = IDLE
        else:
            self.cmdstate += 1

    # 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.start_sample = self.ss
            self.putann([0, ['Command: %s' % cmds[self.cmd]]])
        elif self.cmdstate in (2, 3, 4):
            # Bytes 2/3/4: Master sends address of the sector to erase.
            # Note: Assumes SPI data is 8 bits wide (it is for MX25Lxx05D).
            # TODO: LSB-first of MSB-first?
            self.addr <<= 8
            self.addr |= mosi
            self.putann([0, ['Address byte %d: 0x%02x' % (self.cmdstate - 1,
                        miso)]]) # TODO: Count from 0 or 1?

        if self.cmdstate == 4:
            d = 'Erase sector %d' % self.addr
            self.put(self.start_sample, self.es, self.out_ann, [0, [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!' # TODO: type == WARN?
                self.put(self.start_sample, self.es, self.out_ann, [0, [d]])
            self.state = IDLE
        else:
            self.cmdstate += 1

    def handle_rems(self, mosi, miso):
        if self.cmdstate == 1:
            # Byte 1: Master sends command ID.
            self.start_sample = self.ss
            self.putann([0, ['Command: %s' % cmds[self.cmd]]])
        elif self.cmdstate in (2, 3):
            # Bytes 2/3: Master sends two dummy bytes.
            # TODO: Check dummy bytes? Check reply from device?
            self.putann([0, ['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.putann([0, ['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.putann([0, ['%s ID' % d]])
        elif self.cmdstate == 6:
            # Byte 6: Slave sends device ID (or manufacturer ID).
            self.ids += [miso]
            d = 'Manufacturer' if self.manufacturer_id_first else 'Device'
            self.putann([0, ['%s ID' % d]])
        else:
            # TODO: Error?
            pass

        if self.cmdstate == 6:
            self.end_sample = self.es
            id = self.ids[1] if self.manufacturer_id_first else self.ids[0]
            self.putann([0, ['Device: Macronix %s' % device_name[id]]])
            self.state = IDLE
        else:
            self.cmdstate += 1

    def handle_rdsr(self, mosi, miso):
        self.putann([0, ['Command: %s (0x%02x)' % (cmds[self.cmd], miso)]])
        self.state = IDLE

    def decode(self, ss, es, data):

        ptype, mosi, miso = data

        if ptype != 'data':
            return

        cmd = mosi
        self.ss = ss
        self.es = es

        # If we encountered a known chip command, enter the resp. state.
        if self.state == IDLE:
            if cmd in cmds:
                self.state = cmd
                self.cmd = cmd # TODO: Eliminate?
                self.cmdstate = 1
            else:
                pass # TODO
        else:
            pass

        # Handle commands.
        # TODO: Use some generic way to invoke the resp. method.
        if self.state == CMD_WREN:
            self.handle_wren(mosi, miso)
        elif self.state == CMD_SE:
            self.handle_se(mosi, miso)
        elif self.state == CMD_RDID:
            self.handle_rdid(mosi, miso)
        if self.state == CMD_REMS:
            self.handle_rems(mosi, miso)
        if self.state == CMD_RDSR:
            self.handle_rdsr(mosi, miso)
        else:
            self.put(0, 0, self.out_ann, [0, ['Unknown command: 0x%02x' % cmd]])
            self.state = IDLE
Commit	Line	Data
	1	##
	2	## This file is part of the sigrok project.
	3	##
	4	## Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de>
	5	##
	6	## This program is free software; you can redistribute it and/or modify
	7	## it under the terms of the GNU General Public License as published by
	8	## the Free Software Foundation; either version 2 of the License, or
	9	## (at your option) any later version.
	10	##
	11	## This program is distributed in the hope that it will be useful,
	12	## but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	## GNU General Public License for more details.
	15	##
	16	## You should have received a copy of the GNU General Public License
	17	## along with this program; if not, write to the Free Software
	18	## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	##
	20
	21	#
	22	# Macronix MX25Lxx05D SPI (NOR) flash chip decoder.
	23	# Works for MX25L1605D/MX25L3205D/MX25L6405D.
	24	#
	25
	26	#
	27	# TODO: Description
	28	#
	29	# Details:
	30	# http://www.macronix.com/QuickPlace/hq/PageLibrary4825740B00298A3B.nsf/h_Index/3F21BAC2E121E17848257639003A3146/$File/MX25L1605D-3205D-6405D-1.5.pdf
	31	#
	32
	33	import sigrokdecode as srd
	34
	35	# States
	36	IDLE = -1
	37
	38	# Chip commands (also used as additional decoder states).
	39	CMD_WREN = 0x06
	40	CMD_WRDI = 0x04
	41	CMD_RDID = 0x9f
	42	CMD_RDSR = 0x05
	43	CMD_WRSR = 0x01
	44	CMD_READ = 0x03
	45	CMD_FAST_READ = 0x0b
	46	CMD_2READ = 0xbb
	47	CMD_SE = 0x20
	48	CMD_BE = 0xd8
	49	CMD_CE = 0x60
	50	CMD_CE2 = 0xc7
	51	CMD_PP = 0x02
	52	CMD_CP = 0xad
	53	CMD_DP = 0xb9
	54	# CMD_RDP = 0xab
	55	# CMD_RES = 0xab
	56	CMD_RDP_RES = 0xab # Note: RDP/RES have the same ID.
	57	CMD_REMS = 0x90
	58	CMD_REMS2 = 0xef
	59	CMD_ENSO = 0xb1
	60	CMD_EXSO = 0xc1
	61	CMD_RDSCUR = 0x2b
	62	CMD_WRSCUR = 0x2f
	63	CMD_ESRY = 0x70
	64	CMD_DSRY = 0x80
	65
	66	# TODO: (Short) command names as strings in a dict, too?
	67
	68	# Dict which maps command IDs to their description.
	69	cmds = {
	70	CMD_WREN: 'Write enable',
	71	CMD_WRDI: 'Write disable',
	72	CMD_RDID: 'Read identification',
	73	CMD_RDSR: 'Read status register',
	74	CMD_WRSR: 'Write status register',
	75	CMD_READ: 'Read data',
	76	CMD_FAST_READ: 'Fast read data',
	77	CMD_2READ: '2x I/O read',
	78	CMD_SE: 'Sector erase',
	79	CMD_BE: 'Block erase',
	80	CMD_CE: 'Chip erase',
	81	CMD_CE2: 'Chip erase', # Alternative command ID
	82	CMD_PP: 'Page program',
	83	CMD_CP: 'Continuously program mode',
	84	CMD_DP: 'Deep power down',
	85	# CMD_RDP: 'Release from deep powerdown',
	86	# CMD_RES: 'Read electronic ID',
	87	CMD_RDP_RES: 'Release from deep powerdown / Read electronic ID',
	88	CMD_REMS: 'Read electronic manufacturer & device ID',
	89	CMD_REMS2: 'Read ID for 2x I/O mode',
	90	CMD_ENSO: 'Enter secured OTP',
	91	CMD_EXSO: 'Exit secured OTP',
	92	CMD_RDSCUR: 'Read security register',
	93	CMD_WRSCUR: 'Write security register',
	94	CMD_ESRY: 'Enable SO to output RY/BY#',
	95	CMD_DSRY: 'Disable SO to output RY/BY#',
	96	}
	97
	98	device_name = {
	99	0x14: 'MX25L1605D',
	100	0x15: 'MX25L3205D',
	101	0x16: 'MX25L6405D',
	102	}
	103
	104	class Decoder(srd.Decoder):
	105	id = 'mx25lxx05d'
	106	name = 'MX25Lxx05D'
	107	longname = 'Macronix MX25Lxx05D SPI flash chip decoder'
	108	desc = 'Macronix MX25Lxx05D SPI flash chip decoder'
	109	longdesc = 'TODO'
	110	author = 'Uwe Hermann'
	111	email = 'uwe@hermann-uwe.de'
	112	license = 'gplv2+'
	113	inputs = ['spi', 'spi', 'logic']
	114	outputs = ['mx25lxx05d']
	115	probes = [] # TODO: HOLD#, WP#/ACC
	116	options = {} # TODO
	117	annotations = [
	118	['TODO', 'TODO'],
	119	]
	120
	121	def __init__(self, **kwargs):
	122	self.state = IDLE
	123	self.cmdstate = 1 # TODO
	124
	125	def start(self, metadata):
	126	# self.out_proto = self.add(srd.OUTPUT_PROTO, 'mx25lxx05d')
	127	self.out_ann = self.add(srd.OUTPUT_ANN, 'mx25lxx05d')
	128
	129	def report(self):
	130	pass
	131
	132	def putann(self, data):
	133	# Simplification, most annotations span extactly one SPI byte/packet.
	134	self.put(self.ss, self.es, self.out_ann, data)
	135
	136	def handle_wren(self, mosi, miso):
	137	self.putann([0, ['Command: %s' % cmds[self.cmd]]])
	138	self.state = IDLE
	139
	140	# TODO: Check/display device ID / name
	141	def handle_rdid(self, mosi, miso):
	142	if self.cmdstate == 1:
	143	# Byte 1: Master sends command ID.
	144	self.start_sample = self.ss
	145	self.putann([0, ['Command: %s' % cmds[self.cmd]]])
	146	elif self.cmdstate == 2:
	147	# Byte 2: Slave sends the JEDEC manufacturer ID.
	148	self.putann([0, ['Manufacturer ID: 0x%02x' % miso]])
	149	elif self.cmdstate == 3:
	150	# Byte 3: Slave sends the memory type (0x20 for this chip).
	151	self.putann([0, ['Memory type: 0x%02x' % miso]])
	152	elif self.cmdstate == 4:
	153	# Byte 4: Slave sends the device ID.
	154	self.device_id = miso
	155	self.putann([0, ['Device ID: 0x%02x' % miso]])
	156
	157	if self.cmdstate == 4:
	158	# TODO: Check self.device_id is valid & exists in device_names.
	159	# TODO: Same device ID? Check!
	160	d = 'Device: Macronix %s' % device_name[self.device_id]
	161	self.put(self.start_sample, self.es, self.out_ann, [0, [d]])
	162	self.state = IDLE
	163	else:
	164	self.cmdstate += 1
	165
	166	# TODO: Warn/abort if we don't see the necessary amount of bytes.
	167	# TODO: Warn if WREN was not seen before.
	168	def handle_se(self, mosi, miso):
	169	if self.cmdstate == 1:
	170	# Byte 1: Master sends command ID.
	171	self.addr = 0
	172	self.start_sample = self.ss
	173	self.putann([0, ['Command: %s' % cmds[self.cmd]]])
	174	elif self.cmdstate in (2, 3, 4):
	175	# Bytes 2/3/4: Master sends address of the sector to erase.
	176	# Note: Assumes SPI data is 8 bits wide (it is for MX25Lxx05D).
	177	# TODO: LSB-first of MSB-first?
	178	self.addr <<= 8
	179	self.addr \|= mosi
	180	self.putann([0, ['Address byte %d: 0x%02x' % (self.cmdstate - 1,
	181	miso)]]) # TODO: Count from 0 or 1?
	182
	183	if self.cmdstate == 4:
	184	d = 'Erase sector %d' % self.addr
	185	self.put(self.start_sample, self.es, self.out_ann, [0, [d]])
	186	# TODO: Max. size depends on chip, check that too if possible.
	187	if self.addr % 4096 != 0:
	188	# Sector addresses must be 4K-aligned (same for all 3 chips).
	189	d = 'Warning: Invalid sector address!' # TODO: type == WARN?
	190	self.put(self.start_sample, self.es, self.out_ann, [0, [d]])
	191	self.state = IDLE
	192	else:
	193	self.cmdstate += 1
	194
	195	def handle_rems(self, mosi, miso):
	196	if self.cmdstate == 1:
	197	# Byte 1: Master sends command ID.
	198	self.start_sample = self.ss
	199	self.putann([0, ['Command: %s' % cmds[self.cmd]]])
	200	elif self.cmdstate in (2, 3):
	201	# Bytes 2/3: Master sends two dummy bytes.
	202	# TODO: Check dummy bytes? Check reply from device?
	203	self.putann([0, ['Dummy byte: %s' % mosi]])
	204	elif self.cmdstate == 4:
	205	# Byte 4: Master sends 0x00 or 0x01.
	206	# 0x00: Master wants manufacturer ID as first reply byte.
	207	# 0x01: Master wants device ID as first reply byte.
	208	self.manufacturer_id_first = True if (mosi == 0x00) else False
	209	d = 'manufacturer' if (mosi == 0x00) else 'device'
	210	self.putann([0, ['Master wants %s ID first' % d]])
	211	elif self.cmdstate == 5:
	212	# Byte 5: Slave sends manufacturer ID (or device ID).
	213	self.ids = [miso]
	214	d = 'Manufacturer' if self.manufacturer_id_first else 'Device'
	215	self.putann([0, ['%s ID' % d]])
	216	elif self.cmdstate == 6:
	217	# Byte 6: Slave sends device ID (or manufacturer ID).
	218	self.ids += [miso]
	219	d = 'Manufacturer' if self.manufacturer_id_first else 'Device'
	220	self.putann([0, ['%s ID' % d]])
	221	else:
	222	# TODO: Error?
	223	pass
	224
	225	if self.cmdstate == 6:
	226	self.end_sample = self.es
	227	id = self.ids[1] if self.manufacturer_id_first else self.ids[0]
	228	self.putann([0, ['Device: Macronix %s' % device_name[id]]])
	229	self.state = IDLE
	230	else:
	231	self.cmdstate += 1
	232
	233	def handle_rdsr(self, mosi, miso):
	234	self.putann([0, ['Command: %s (0x%02x)' % (cmds[self.cmd], miso)]])
	235	self.state = IDLE
	236
	237	def decode(self, ss, es, data):
	238
	239	ptype, mosi, miso = data
	240
	241	if ptype != 'data':
	242	return
	243
	244	cmd = mosi
	245	self.ss = ss
	246	self.es = es
	247
	248	# If we encountered a known chip command, enter the resp. state.
	249	if self.state == IDLE:
	250	if cmd in cmds:
	251	self.state = cmd
	252	self.cmd = cmd # TODO: Eliminate?
	253	self.cmdstate = 1
	254	else:
	255	pass # TODO
	256	else:
	257	pass
	258
	259	# Handle commands.
	260	# TODO: Use some generic way to invoke the resp. method.
	261	if self.state == CMD_WREN:
	262	self.handle_wren(mosi, miso)
	263	elif self.state == CMD_SE:
	264	self.handle_se(mosi, miso)
	265	elif self.state == CMD_RDID:
	266	self.handle_rdid(mosi, miso)
	267	if self.state == CMD_REMS:
	268	self.handle_rems(mosi, miso)
	269	if self.state == CMD_RDSR:
	270	self.handle_rdsr(mosi, miso)
	271	else:
	272	self.put(0, 0, self.out_ann, [0, ['Unknown command: 0x%02x' % cmd]])
	273	self.state = IDLE
	274