mirror of
https://github.com/AsahiLinux/m1n1
synced 2024-11-24 15:43:11 +00:00
221 lines
7.8 KiB
Python
221 lines
7.8 KiB
Python
# SPDX-License-Identifier: MIT
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import struct
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from construct import *
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from m1n1.hv import TraceMode
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from m1n1.proxyutils import RegMonitor
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from m1n1.utils import *
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from m1n1.trace import ADTDevTracer
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from m1n1.trace.asc import ASCTracer, ASCRegs, EP, EPState, msg, msg_log, DIR
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from m1n1.trace.dart import DARTTracer
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from m1n1.trace.gpio import GPIOTracer
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from m1n1.trace.spi import SPITracer
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DARTTracer = DARTTracer._reloadcls()
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ASCTracer = ASCTracer._reloadcls()
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SPITracer = SPITracer._reloadcls()
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# SPI HID transport tracer for 2021 macbook models
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kbd_node = None
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for node in hv.adt.walk_tree():
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try:
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if node.compatible[0] == "spi-1,spimc":
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for c in node:
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try:
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if c.compatible[0] == "hid-transport,k1":
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kbd_node = c
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break
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except AttributeError:
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continue
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except AttributeError:
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continue
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if kbd_node is not None:
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break
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class Z2Tracer(SPITracer):
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def start(self):
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super().start()
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self.txbuffer = []
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self.rxbuffer = []
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self.want_bytes = 0
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self.state = Z2Tracer.preboot
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def w_TXDATA(self, data):
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self.txbuffer.append(data.value)
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self.check_msg_finished()
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def r_RXDATA(self, data):
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self.rxbuffer.append(data.value)
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self.check_msg_finished()
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def check_msg_finished(self):
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if min(len(self.txbuffer), len(self.rxbuffer)) < self.want_bytes:
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return
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self.state(self)
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def bad_state(self):
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pass
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def error(self):
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self.log(f"RXBUF {' '.join(hex(x) for x in self.rxbuffer)}")
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self.log(f"TXBUF {' '.join(hex(x) for x in self.txbuffer)}")
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self.log(f"state: {self.state}")
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self.log("Tracer desynchronized, shutting down")
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self.state = Z2Tracer.bad_state
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def consume_bytes(self, n):
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self.txbuffer = self.txbuffer[n:]
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self.rxbuffer = self.rxbuffer[n:]
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def preboot(self):
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if self.txbuffer[0] == 0:
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self.want_bytes = 4
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self.state = Z2Tracer.init_zeros
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elif self.txbuffer[0] == 0x1e:
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self.want_bytes = 16
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self.state = Z2Tracer.processing_init_data
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else:
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self.error()
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def init_zeros(self):
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self.log("sent 4 zeroes")
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self.consume_bytes(4)
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self.state = Z2Tracer.preboot
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def processing_init_data(self):
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self.log("Sent init data")
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self.want_bytes = 2
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self.consume_bytes(16)
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self.state = Z2Tracer.main_hbpp
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def main_hbpp(self):
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if self.txbuffer[0] == 0x1a and self.txbuffer[1] == 0xa1:
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self.log("Sent int ack")
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self.consume_bytes(2)
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elif self.txbuffer[0] == 0x18 and self.txbuffer[1] == 0xe1:
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self.log("Sent nop")
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self.consume_bytes(2)
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elif self.txbuffer[0] == 0x1f and self.txbuffer[1] == 0x01:
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self.log("Sent request cal")
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self.consume_bytes(2)
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elif self.txbuffer[0] == 0x30 and self.txbuffer[1] == 0x01:
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self.state = Z2Tracer.send_blob_cmd
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self.want_bytes = 10
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elif self.txbuffer[0] == 0x1e and self.txbuffer[1] == 0x33:
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self.state = Z2Tracer.send_rmw_cmd
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self.want_bytes = 16
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elif self.txbuffer[0] == 0xee and self.txbuffer[1] == 0x00:
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self.state = Z2Tracer.main_z2
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self.want_bytes = 16
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else:
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self.error()
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def send_blob_cmd(self):
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length = (self.txbuffer[2] << 8 | self.txbuffer[3]) * 4
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self.consume_bytes(10)
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self.want_bytes = length + 4
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self.log(f"Sending blob of length {length}")
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self.state = Z2Tracer.send_blob_tail
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def send_blob_tail(self):
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self.log("Finished sendind blob")
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self.consume_bytes(self.want_bytes)
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self.want_bytes = 2
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self.state = Z2Tracer.main_hbpp
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def send_rmw_cmd(self):
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self.log('Sent RMW command')
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self.want_bytes = 2
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self.consume_bytes(16)
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self.state = Z2Tracer.main_hbpp
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def main_z2(self):
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if self.txbuffer[0] == 0xee:
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self.log("sent wake cmd")
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self.consume_bytes(16)
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elif self.txbuffer[0] == 0xe2:
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self.log("sent get device info cmd")
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self.consume_bytes(16)
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self.state = Z2Tracer.read_device_info_reply
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elif self.txbuffer[0] == 0xeb:
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length = (self.rxbuffer[1] | (self.rxbuffer[2] << 8)) + 5
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length = (length + 3) & (-4)
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self.consume_bytes(16)
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self.want_bytes = length
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self.state = Z2Tracer.read_interrupt_data
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elif self.txbuffer[0] == 0xe3:
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self.log(f"got report info for {self.txbuffer[1]}, len is {self.rxbuffer[3]}")
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self.consume_bytes(16)
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elif self.txbuffer[0] == 0xe7:
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self.want_bytes = self.txbuffer[3] + 5
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self.consume_bytes(16)
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self.state = Z2Tracer.reading_report_long
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elif self.txbuffer[0] == 0xe6:
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self.consume_bytes(16)
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self.state = Z2Tracer.read_report_reply
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else:
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self.error()
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def reading_report_long(self):
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self.log(f"got report {' '.join(hex(x) for x in self.rxbuffer)}")
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self.consume_bytes(self.want_bytes)
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self.want_bytes = 16
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self.state = Z2Tracer.main_z2
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def read_interrupt_data(self):
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data = self.rxbuffer[5:]
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tstamp2 = data[4] | (data[5] << 8) | (data[6] << 16)
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tx = [f"TS1 {hex(data[1])} TS2 {tstamp2} UNK1: {mxformat(data[7:16])} UNK2: {mxformat(data[17:24])}"]
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if len(data) >= 16:
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ntouch = data[16]
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for i in range(ntouch):
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ptr = 24 + 30 * i
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finger = data[ptr]
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state = data[ptr + 1]
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x = data[ptr + 4] | (data[ptr + 5] << 8)
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y = data[ptr + 6] | (data[ptr + 7] << 8)
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wj = data[ptr + 12] | (data[ptr + 13] << 8)
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wn = data[ptr + 14] | (data[ptr + 15] << 8)
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dg = data[ptr + 16] | (data[ptr + 17] << 8)
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prs = data[ptr + 18] | (data[ptr + 19] << 8)
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tx.append(f"F: {hex(finger)} S: {hex(state)} X: {x} Y: {y} MAJ: {wj} MIN: {wn} ANG: {dg} PRS: {prs} UNK1: {mxformat(data[ptr + 2:ptr+4])} UNK2: {mxformat(data[ptr + 8:ptr+12])} UNK3: {mxformat(data[ptr + 20:ptr+30])}")
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self.log(';'.join(tx))
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else:
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self.log(f"??? {mxformat(data)}")
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self.consume_bytes(self.want_bytes)
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self.want_bytes = 16
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self.state = Z2Tracer.main_z2
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def read_device_info_reply(self):
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self.log(f"got device info {' '.join(hex(x) for x in self.rxbuffer[:16])}")
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self.consume_bytes(16)
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self.state = Z2Tracer.main_z2
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def read_report_reply(self):
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self.log(f"got report {' '.join(hex(x) for x in self.rxbuffer[:16])}")
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self.consume_bytes(16)
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self.state = Z2Tracer.main_z2
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def mxformat(ls):
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return ''.join(xformat(x) for x in ls)
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def xformat(x):
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x = hex(x)[2:]
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if len(x) == 1:
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x = '0' + x
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return x
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# trace interrupts
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aic_phandle = getattr(hv.adt["/arm-io/aic"], "AAPL,phandle")
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spi_node = kbd_node._parent
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#if getattr(spi_node, "interrupt-parent") == aic_phandle:
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# for irq in getattr(spi_node, "interrupts"):
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# hv.trace_irq(node.name, irq, 1, hv.IRQTRACE_IRQ)
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#for irq in hv.adt['/arm-io/gpio'].interrupts:
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# hv.trace_irq('/arm-io/gpio', irq, 1, hv.IRQTRACE_IRQ)
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spi_tracer = Z2Tracer(hv, "/arm-io/" + spi_node.name)
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spi_tracer.start()
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spi_pins_nub = {
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0x0: "clock32khz",
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}
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#gpio_tracer_nub = GPIOTracer(hv, "/arm-io/nub-gpio", spi_pins_nub, verbose=0)
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#gpio_tracer_nub.start()
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spi_pins = {
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0x6d: "enable_cs",
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0x8b: "reset"
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}
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#gpio_tracer = GPIOTracer(hv, "/arm-io/gpio", spi_pins, verbose=0)
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#gpio_tracer.start()
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