4a7224c41f
- B9A: read-only audit of stock LK/DT: the panel is an ST7735S 128x128 on SPI (BLSP1 QUP4, 16 MHz, mode 3, D/C GPIO116, RESET GPIO118), backlight = PM8916 MPP4 current sink 40 mA. - B9B: upstream panel-mipi-dbi with the stock init sequence as firmware; MPP4 sink via pinctrl + gpio-backlight; first light with correct colours/orientation/offsets. - B9C: fbcon (6x8, 21x16) on tty1 + getty, UART console kept, aurora-display service; cache B9C b9ce13c9 written and verified, cold boots with LTE + Wi-Fi + display. - B9L (RAM only): lk2nd second stage with an msm8916 SPI panel port shows a picture before Linux. - Sanitizer: whitelist for b8/ and b9/.
19 lines
794 B
Python
19 lines
794 B
Python
#!/usr/bin/env python3
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"""B9A read-only helper: dump words / strings / bytes from stock lk.bin (base 0x8f600000).
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usage: lkmem.py lk.bin w ADDR N | s ADDR | b ADDR N"""
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import sys, struct
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BASE=0x8f600000
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d=open(sys.argv[1],'rb').read()
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def w(a): return struct.unpack_from('<I',d,a-BASE)[0]
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def s(a):
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o=a-BASE
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if not (0<=o<len(d)): return None
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e=d.find(b'\0',o); t=d[o:e]
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return t.decode('latin1') if t and all(32<=c<127 or c in (9,10) for c in t) else None
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k=sys.argv[2]; a=int(sys.argv[3],16)
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if k=='w':
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for i in range(int(sys.argv[4])):
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v=w(a+4*i); st=s(v) if BASE<=v<BASE+len(d) else None
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print(f'{a+4*i:08x}: {v:08x} {v:10d}' + (f' -> {st!r}' if st else ''))
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elif k=='s': print(repr(s(a)))
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elif k=='b': print(d[a-BASE:a-BASE+int(sys.argv[4])].hex(' '))
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