Dell 15 P66F - Czy kbc MEC1404-NU jest programowalny ?

ww.bielsko napisał:

Czy kbc MEC1404-NU jest programowalny ?

Cytat:

posiada duży rozmiar pamięci RAM (SRAM), i w tę RAM wbudowany moduł ładujący (BOOT) tego (mec14xx) rozpakowuje wsad Bios.

Cytat:

1.1 Boot ROM
Following the release of the EC_PROC_RESET# signal, the processor will start executing code in the Boot ROM.
The Boot ROM executes the SPI Flash Loader, which downloads User Code from an external SPI Flash and stores it in the internal Code RAM. Upon completion, the Boot ROM jumps into the User Code and starts executing.

Cytat:

When applying power to the EC, it climbs into the flash drive at 00.00.00 h and reads 4 bytes in a row-0x10,0x70,0x00, 0x55 (the address of the beginning of some desired area or parameters ??!! )
Then a new cycle, but with addresses 70.10.00 h 48byt.
The next loop from address 70.10.30 h is 17 bytes. In fact, it is necessary to consider that 16 he needs for the latter he pulled off in the next cycle. 16 bytes *8=128 bits. Unpacking key??!!
Then last cycle, the longest, with the address 70.10.40 h 18116 bytes absorbs.

It is not interesting, and the fact that the new mec14xx is doing the same work, but just the laptop brick.
From this I conclude that in the new EC chip need to put the key to true unpacked that draws in. The initial communication with the EC SPI stick is the same.
If we turn to the Datasheet, the structure of the chip, clearly shows that the chip has an on Board unit eFUSE.