diff options
Diffstat (limited to 'decoders/jtag_stm32')
| -rw-r--r-- | decoders/jtag_stm32/pd.py | 61 |
1 files changed, 42 insertions, 19 deletions
diff --git a/decoders/jtag_stm32/pd.py b/decoders/jtag_stm32/pd.py index 5f5c234..9374a3b 100644 --- a/decoders/jtag_stm32/pd.py +++ b/decoders/jtag_stm32/pd.py @@ -127,7 +127,16 @@ class Decoder(srd.Decoder): inputs = ['jtag'] outputs = ['jtag_stm32'] annotations = ( - ('text', 'Human-readable text'), + ('item', 'Item'), + ('field', 'Field'), + ('command', 'Command'), + ('warning', 'Warning'), + ) + annotation_rows = ( + ('items', 'Items', (0,)), + ('fields', 'Fields', (1,)), + ('commands', 'Commands', (2,)), + ('warnings', 'Warnings', (3,)), ) def __init__(self, **kwargs): @@ -140,35 +149,53 @@ class Decoder(srd.Decoder): def putx(self, data): self.put(self.ss, self.es, self.out_ann, data) + def putf(self, s, e, data): + self.put(self.samplenums[s][0], self.samplenums[e][1], self.out_ann, data) + def handle_reg_bypass(self, cmd, bits): self.putx([0, ['BYPASS: ' + bits]]) def handle_reg_idcode(self, cmd, bits): # IDCODE is a read-only register which is always accessible. # IR == IDCODE: The device ID code is shifted out via DR next. - self.putx([0, ['IDCODE: %s (ver=%s, part=%s, manuf=%s, res=%s)' % \ - decode_device_id_code(bits)]]) + + s = self.samplenums + s.reverse() + id_hex, ver, part, manuf, res = decode_device_id_code(bits[:-1]) + self.putf(0, 0, [1, ['Reserved (BS TAP)', 'BS', 'B']]) + self.putf(1, 1, [1, ['Reserved', 'Res', 'R']]) + self.putf(2, 12, [1, ['Manufacturer: %s' % manuf, 'Manuf', 'M']]) + self.putf(13, 28, [1, ['Part: %s' % part, 'Part', 'P']]) + self.putf(29, 32, [1, ['Version: %s' % ver, 'Version', 'V']]) + + self.ss = s[1][0] + self.putx([2, ['IDCODE: %s (ver=%s, part=%s, manuf=%s, res=%s)' % \ + decode_device_id_code(bits[:-1])]]) def handle_reg_dpacc(self, cmd, bits): + bits = bits[:-1] s = data_in('DPACC', bits) if (cmd == 'DR TDI') else data_out(bits) - self.putx([0, [s]]) + self.putx([2, [s]]) def handle_reg_apacc(self, cmd, bits): + bits = bits[:-1] s = data_in('APACC', bits) if (cmd == 'DR TDI') else data_out(bits) - self.putx([0, [s]]) + self.putx([2, [s]]) def handle_reg_abort(self, cmd, bits): + bits = bits[:-1] # Bits[31:1]: reserved. Bit[0]: DAPABORT. a = '' if (bits[0] == '1') else 'No ' s = 'DAPABORT = %s: %sDAP abort generated' % (bits[0], a) - self.putx([0, [s]]) + self.putx([2, [s]]) # Warn if DAPABORT[31:1] contains non-zero bits. if (bits[:-1] != ('0' * 31)): - self.putx([0, ['WARNING: DAPABORT[31:1] reserved!']]) + self.putx([3, ['WARNING: DAPABORT[31:1] reserved!']]) def handle_reg_unknown(self, cmd, bits): - self.putx([0, ['Unknown instruction: %s' % bits]]) + bits = bits[:-1] + self.putx([2, ['Unknown instruction: %s' % bits]]) def decode(self, ss, es, data): cmd, val = data @@ -176,15 +203,8 @@ class Decoder(srd.Decoder): self.ss, self.es = ss, es if cmd != 'NEW STATE': - val, self.samplenums = val - # The right-most char in the 'val' bitstring is the LSB. - - # The STM32F10xxx has two serially connected JTAG TAPs, the - # boundary scan tap (5 bits) and the Cortex-M3 TAP (4 bits). - # See UM 31.5 "STM32F10xxx JTAG TAP connection" for details. - # Due to this, we need to ignore the last bit of each data shift. - val = val[:-1] + val, self.samplenums = val # State machine if self.state == 'IDLE': @@ -195,9 +215,12 @@ class Decoder(srd.Decoder): # The STM32F10xxx has two serially connected JTAG TAPs, the # boundary scan tap (5 bits) and the Cortex-M3 TAP (4 bits). # See UM 31.5 "STM32F10xxx JTAG TAP connection" for details. - # Currently we only care about the latter and use IR[3:0]. - self.state = ir.get(val[-4:], ['UNKNOWN', 0])[0] - self.putx([0, ['IR: ' + self.state]]) + self.state = ir.get(val[:-1][-4:], ['UNKNOWN', 0])[0] + bstap_ir = ir.get(val[:-1][:4], ['UNKNOWN', 0])[0] + self.putf(3, 0, [1, ['IR (BS TAP): ' + bstap_ir]]) + self.putf(7, 4, [1, ['IR (M3 TAP): ' + self.state]]) + self.putf(8, 8, [1, ['Reserved (BS TAP)', 'BS', 'B']]) + self.putx([2, ['IR: %s' % self.state]]) elif self.state == 'BYPASS': # Here we're interested in incoming bits (TDI). if cmd != 'DR TDI': |