stable-tracking test image

Andy Green andy at
Sun Nov 16 21:45:08 CET 2008

Hash: SHA1

Somebody in the thread at some point said:
| Andy Green wrote:
|> I wrote it up in the hardware spec document for GTA03 a couple of months
|> ago: the NAND write protection is gone from A1 because the entire boot
|> path including bootloader is debrickable in an SD reader on a PC.
| Yup, I remember that one. I just didn't realize that you had actually
| thrown out the entire NAND boot path.
| That's not necessarily a bad thing, of course. After all, needing a
| boot sector hasn't prevented DOS from ruling the world ;-)

If we indirect through NAND we allow it to be bricked... the NAND can
even be exhausted by malicous code and permanently bricked... SD Card
solution even for bootloader is truly unbrickable since it can be popped
and nuked in a PC.  AUX type hard boot source solution seems needless
since we have a backup partition already to deal with less fatal problems.

| Is resume from SLEEP happy with that arrangement as well ?

Qi steppingstone content is left intact after boot, it even contains SD
Card driver already but we don't even need it on resume path since Linux
is still sat in memory ready to go.  Same as 2442 when we see we wake
for resume after critical init we just wake the mDDR and hop straight
into the kernel.

- -Andy
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