HP Elitebook 8440p OutOfRegionException problem

[jjurkus]

I've built this external flasher, and am using it with a SOIC clip: https://learn.adafruit.com/programming-spi-flash-prom-with-an-ft232h-breakout/overview

I've dumped 8MB of the flash to a file and tried me_cleaner on it. It fails with an error: # ./me_cleaner.py -S 8440p.bin Full image detected The ME/TXE region goes from 0x3000 to 0x500000 Found FPT header at 0x3010 Found 14 partition(s) Found FTPR header: FTPR partition spans from 0xf2000 to 0x1b2000 ME/TXE firmware version 6.2.60.1066 Public key match: Intel ME, firmware versions 6.x.x.x Reading partitions list... FOVD (0x00000400 - 0x000002000, 0x00001c00 total bytes): removed EFFS (0x00002000 - 0x0000e2000, 0x000e0000 total bytes): removed NVKR (NVRAM partition, no data, 0x00010000 total bytes): nothing to remove BIEL ( no data here , 0x00003000 total bytes): nothing to remove BIIS ( no data here , 0x00036000 total bytes): nothing to remove NVTD (NVRAM partition, no data, 0x00002000 total bytes): nothing to remove NVCM (NVRAM partition, no data, 0x00004000 total bytes): nothing to remove NVOS (NVRAM partition, no data, 0x00011000 total bytes): nothing to remove NVSH (NVRAM partition, no data, 0x00007000 total bytes): nothing to remove BIAL ( no data here , 0x00009000 total bytes): nothing to remove NVVE (NVRAM partition, no data, 0x00000c00 total bytes): nothing to remove GLUT (0x000e2000 - 0x0000f2000, 0x00010000 total bytes): removed FTPR (0x000f2000 - 0x0001b2000, 0x000c0000 total bytes): NOT removed NFTP (0x001b2000 - 0x000500000, 0x0034e000 total bytes): Traceback (most recent call last): File "./me_cleaner.py", line 739, in <module> mef.fill_range(part_start, part_end, b"\xff") File "./me_cleaner.py", line 95, in fill_range raise OutOfRegionException() __main__.OutOfRegionException

However, the AltMeDisable works fine. This laptop is a bit wonky, there is something broken in the bios battery circuit I think. Can the error above be explained by those NVRAM partitions with no data? After disconnecting the main battery one needs to set the bios settings again.

[corna]

Can you apply this patch

@@ -712,7 +712,7 @@ if __name__ == "__main__":
                 # ME 6: the last partition has 0xffffffff as size
                 if variant == "ME" and version[0] == 6 and \
                    i == entries - 1 and part_length == 0xffffffff:
-                    part_length = me_end - part_start
+                    part_length = me_end - me_start - part_start

                 part_end = part_start + part_length

and try again?

NVRAM partitions never have data, they're always mapped outside the SPI chip.

[jjurkus]

Yes, this fixed it! Thanks!

(BTW, where do I report working motherboards or laptops? The HP elitebook 8560p works great with external flashing)

[corna]

Great!

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