[minipci1321]

Not arguing with you, but first thing in the way of opening up hardware, is vendor's liability. It is very hard to communicate to a customer who had just spent money on a big run of boards, only to discover uncorrectable flaws in the SoC, that "we actually imply no warranty and no fitness for any purpose". If this liability question could somehow be solved, the remaining progress on opening up would be made much faster.

[cushychicken]

Couple this with a very real fear of accidentally giving away the secret sauce of the chip, and you have a most potent potion of paranoia.

[boznz]

Most Microprocessor manufacturers Atmel, Microchip, ST, TI, NXP etc give out incredible documentation for free and probably enough though for a competitor to reverse engineer a dodgy but functional implementation of the chip (say in a FPGA).

Not sure why these guys go all the way where as companies like broadcom do not, I would put it more to shaving the last cent off the chip. I know which ones I would choose as an engineer but you dont often get to make the choice.

[cushychicken]

Considering that automotive fault tolerance is one of NXP's core competences, I can guarantee you that there is plenty of secret sauce that you're not privy to in those chips.

That being said, your point is well taken.