 C3200 Boot Process |
OESF Portables Forum > Everything Else > Archived Forums > Distros, Development, and Model Specific Forums > Model Specific Forums > Sharp Zaurus > C1000/3x00 General discussions
 Sep 11 2011, 04:24 AM
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#1
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Group: Members Posts: 6 Joined: 24-November 07 From: Moscow, Russia Member No.: 20,980  |
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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Sep 11 2011, 06:43 AM
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#2
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Group: Members Posts: 135 Joined: 27-June 05 From: Prague, Czech Republic, Europe Member No.: 7,468 |
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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Sep 12 2011, 04:50 AM
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#3
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Group: Members Posts: 6 Joined: 24-November 07 From: Moscow, Russia Member No.: 20,980 |
QUOTE(utx @ Sep 11 2011, 06:43 PM) 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. Thank you. Is it possible to obtain detailed information about this process somewhere? |
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Posts in this topic
Skaarj C3200 Boot Process Sep 11 2011, 04:24 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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