rescue my PRS-505 - Page 2

wenjie1984 · 07-08-2008, 01:40 PM

How did you flash the u-boot ,use bootstrap?
did you use nand write cmd ,it will return error every time?
i think what you see in the 0x09000000 is from nand flash offset 0x2000

admin · 07-08-2008, 04:08 PM

I did not flash uboot, I have loaded it in sdram through jtag.
I yet did not try a command "nand write". Only "nand read".
The problem is connected with calculation ECC. If the page is erased - reading O.K. If on it there are data - reading error.
In first four sectors (blocks) nand I see four copies of the partitions table. Two of them - are bad. I wish to try to restore it.

wenjie1984 · 07-09-2008, 10:07 AM

I have check many times in my 505 using nand read cmd ,but there is no error .
Maybe your problem appears in JTAG mode. And could you put what have you
done about 505 device on the http://openinkpot.org/wiki/Prs505 , and you can
join the openinkpot to develope the 505.

admin · 07-10-2008, 01:30 PM

Quote:

Originally Posted by wenjie1984

Maybe your problem appears in JTAG mode.

No... I changed ebook.h, probably, the reason in it.
My prs505 already works. I can make for you dumps nor, nand. You can write them in your 505.

wenjie1984 · 07-10-2008, 10:36 PM

Thank you! You can send them to zwjsq@vip.sina.com ,or can attach them to
openinkpot http://openinkpot.org/wiki/Prs505. Now my nand flash is empity,
and Nor flash is only uboot. by the way , how did you brike your 505 ?

admin · 07-11-2008, 05:00 AM

Check your mail. 6 parts, all - 50MB, in "rar" archive.
After loading linux make a command
nblconfig -ksel normal
(I created dumps in recovery mode)

Quote:

Originally Posted by wenjie1984

how did you brike your 505 ?

I such have bought it. That man make reflash Fsk, I think, that the battery has been low.

wenjie1984 · 07-11-2008, 11:42 PM

I have got the dumps, thank you! But now my nand has nothing , it cannot be
able to boot into linux and my new kernel has not be developed completely. only one way to use is u-boot loadb cmd ,but the nand dumps is too larger . is there any way to restore the dumps? (otherwise until the new kernel support the usb ether or mms/sd card)

admin · 07-13-2008, 02:20 PM

It is possible to write only the first 0x15a0000 bytes nand. IMHO it enough that it was started linux. From linux write the rest.

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07-08-2008, 01:40 PM	#16
wenjie1984 Junior Member Posts: 9 Karma: 10 Join Date: Jun 2008 Device: sony PRS-505	How did you flash the u-boot ,use bootstrap? did you use nand write cmd ,it will return error every time? i think what you see in the 0x09000000 is from nand flash offset 0x2000

07-08-2008, 04:08 PM	#17
admin Junior Member Posts: 8 Karma: 10 Join Date: Jul 2008 Device: E-Book Reader or handheld device	I did not flash uboot, I have loaded it in sdram through jtag. I yet did not try a command "nand write". Only "nand read". The problem is connected with calculation ECC. If the page is erased - reading O.K. If on it there are data - reading error. In first four sectors (blocks) nand I see four copies of the partitions table. Two of them - are bad. I wish to try to restore it.

07-09-2008, 10:07 AM	#18
wenjie1984 Junior Member Posts: 9 Karma: 10 Join Date: Jun 2008 Device: sony PRS-505	I have check many times in my 505 using nand read cmd ,but there is no error . Maybe your problem appears in JTAG mode. And could you put what have you done about 505 device on the http://openinkpot.org/wiki/Prs505 , and you can join the openinkpot to develope the 505.

07-10-2008, 10:36 PM	#20
wenjie1984 Junior Member Posts: 9 Karma: 10 Join Date: Jun 2008 Device: sony PRS-505	Thank you! You can send them to zwjsq@vip.sina.com ,or can attach them to openinkpot http://openinkpot.org/wiki/Prs505. Now my nand flash is empity, and Nor flash is only uboot. by the way , how did you brike your 505 ?

07-11-2008, 11:42 PM	#22
wenjie1984 Junior Member Posts: 9 Karma: 10 Join Date: Jun 2008 Device: sony PRS-505	I have got the dumps, thank you! But now my nand has nothing , it cannot be able to boot into linux and my new kernel has not be developed completely. only one way to use is u-boot loadb cmd ,but the nand dumps is too larger . is there any way to restore the dumps? (otherwise until the new kernel support the usb ether or mms/sd card)

07-13-2008, 02:20 PM	#23
admin Junior Member Posts: 8 Karma: 10 Join Date: Jul 2008 Device: E-Book Reader or handheld device	It is possible to write only the first 0x15a0000 bytes nand. IMHO it enough that it was started linux. From linux write the rest.