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2012-03-23
, 05:40
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@ Ängelholm, Sweden
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#2
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i think it's some sort of once-writeable memory with lock. need to try writing to CAL in normal mode, when no disclaimer
Or it can be modded only in normal mode, open mode lock it.
Last edited by coderus; 2012-03-23 at 05:46.
Or it can be modded only in normal mode, open mode lock it.
Last edited by coderus; 2012-03-23 at 05:46.
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2012-03-23
, 05:52
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Posts: 6,436 |
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@ Ängelholm, Sweden
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#3
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and about rle. i believe it should be rle (some sort of bitmap format, many image editors can export to rle), but compressed/encrypted by nokia, i believe it should work fine with "plain" rle file.
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2012-03-23
, 06:55
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#4
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Great idea with a thread for this
Some info that may be usefull, if it is 'hidden' somewhere, in protected area. Is mtd partitioning. Can be seen like this, and possible dumped with some memory dump utility, or dd.
Some info that may be usefull, if it is 'hidden' somewhere, in protected area. Is mtd partitioning. Can be seen like this, and possible dumped with some memory dump utility, or dd.
Code:
~ $ cat /proc/mtd dev: size erasesize name mtd0: 00100000 00040000 "bootloader" mtd1: 002c0000 00040000 "config" mtd2: 01000000 00040000 "kernel" mtd3: 00200000 00040000 "log" mtd4: 1ca40000 00040000 "var" mtd5: 02000000 00040000 "moslo" mtd6: 20000000 00040000 "omap2-onenand" ~ $
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2012-03-23
, 15:34
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Joined on Mar 2008
@ Oxford, UK
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#5
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Originally Posted by coderus
I assume RLE is http://en.wikipedia.org/wiki/Run-length_encoding which isn't a file format as such, but a simple compression technique. It should be easy to compress/uncompress the data, but you would still need to work out the underlying file format. It's likely to be some kind of raw framebuffer dump.
and about rle. i believe it should be rle (some sort of bitmap format, many image editors can export to rle), but compressed/encrypted by nokia, i believe it should work fine with "plain" rle file.
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2012-03-23
, 17:05
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@ Ängelholm, Sweden
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#6
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success, just executed
in normal mode, then flashed to open kernel, and openmode disclaimer not displayed.
Code:
disclaimer-cal remove View-openmode
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2012-03-24
, 08:11
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@ New Zealand
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#7
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Wow congrats, that disclaimer is just plain ugly, and thanks to you guys... is a thing of the past.
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2012-03-24
, 09:26
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#8
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coderus any way to do something similar when already in open mode.
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2012-03-24
, 09:27
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@ Ängelholm, Sweden
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#9
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of course no.
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2012-03-24
, 13:11
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@ Finland
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#10
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rle is 16 bit run length encoded data, converted my example png to rle and it seems to work.
RM696-07-1_PR_001:~# disclaimer-cal write View-openmove disclaimer-custom.rle
disclaimer-cal: Disclaimer written to CAL (size: 68843)
RM696-07-1_PR_001:~# disclaimer-cal write View-openmove disclaimer-custom.rle
disclaimer-cal: Disclaimer written to CAL (size: 68843)
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Also, editing the files does not change the image on boot - maybe there is some part that writes the data to a specific memory area so that it's directly accessible on bootup (and this happens only once, when open mode is first "detected")? disclaimer-call fails for me when i tell it to write a different .rle file to the openmode area in mtd1 (config area).
Interesting files and binaries:
... open("/proc/mtd", O_RDONLY) = 3 ... open("/dev/mtd1", O_RDWR) = 3 ... lseek(3, 1974272, SEEK_SET) = 1974272 write(3, "ConF\2\1\1\0View-openmode\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = -1 EIO (Input/output error) ...Possibly interesting tool to inspect mtd1: https://dev.openwrt.org/browser/pack...src/calvaria.c
Last edited by thp; 2012-03-22 at 22:28.