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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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#2
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Group: Members Posts: 135 Joined: 27-June 05 From: Prague, Czech Republic, Europe Member No.: 7,468 ![]() |
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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#3
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Group: Members Posts: 6 Joined: 24-November 07 From: Moscow, Russia Member No.: 20,980 ![]() |
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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Lo-Fi Version | Time is now: 21st April 2018 - 09:22 PM |