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> C3200 Boot Process
Skaarj
post Sep 11 2011, 04:24 AM
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Hi. I'm very interesting how zaurus boots up.
What does happen when power is applied?
There is no information about internal flash in PXA270 datasheet. So where is maintenance menu (and rescue mode) code located? What does handle special key pressing?
Unfortunately, I haven't found any really useful information.
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utx
post Sep 11 2011, 06:43 AM
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QUOTE(Skaarj @ Sep 11 2011, 01:24 PM) *
Hi. I'm very interesting how zaurus boots up.
What does happen when power is applied?
There is no information about internal flash in PXA270 datasheet. So where is maintenance menu (and rescue mode) code located? What does handle special key pressing?
Unfortunately, I haven't found any really useful information.


It jumps somewhere to the PROM and runs bootloader (or ROM menu). In the standard mode, it loads NAND bootloader (or NAND menu). NAND bootloader processes records in the dedicated NAND area, sets the hardware, creates kernel arguments and runs one of the kernels in the dedicated areas. Then it continues with a standard Linux boot depending on the image in the flash.

At least one code is processed by the PROM code (ROM diag), most of the rest by rthe NAND code.
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Posts in this topic
Skaarj   C3200 Boot Process   Sep 11 2011, 04:24 AM
utx   QUOTE(Skaarj @ Sep 11 2011, 01:24 PM) Hi....   Sep 11 2011, 06:43 AM
Skaarj   QUOTE(utx @ Sep 11 2011, 06:43 PM) It jum...   Sep 12 2011, 04:50 AM
utx   QUOTE(Skaarj @ Sep 12 2011, 01:50 PM) Tha...   Sep 12 2011, 06:39 AM
Skaarj   I've tried to make a little investigation CODE...   Sep 13 2011, 06:50 AM
utx   QUOTE(Skaarj @ Sep 13 2011, 03:50 PM) I...   Oct 2 2011, 01:03 PM


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