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