Guest disc0 Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) Humm, at least something new had happen, I managed to be stuck in acer boot logo!! Is there a way to remove the logo and see whats happening in the background?? Thanks blc for the kernel header hint, I really let that pass! I have noticed that pauls superboot had 2048 extra header before kernel, but thought it was placed there by mkbootimg... Edited January 31, 2010 by disc0 Link to comment Share on other sites More sharing options...
Guest blc Posted January 31, 2010 Report Share Posted January 31, 2010 Thx for the link. Coul you explain a lil bit more plz ? Open compiled zImage and kernel from superboot or stock boot.img in hex editor and you'll see the difference. Stock kernel has header that is bunch of 00's. It goes from 0x000 to around 0x800, but zImage doesn't have this. I'm not at home right now so I can't show you example sorry :) Link to comment Share on other sites More sharing options...
Guest disc0 Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) Ok, so this is what I get so far.. Compilled the new kernel, added an extra padding page (2048 bytes of 00) in the init of the file, made the boot img and edit the boot-img header to remove 0x800 (2048) bytes from the kernel size and flashed to the phone.. Now instead of going directly to the fastboot i get stuch on acer logo, witch means its booting from the new kernel.. The problem is the damm logo in front, I need to see whats going in the background, and need to get rid of the logo.. Need to search if there is a way... Edited January 31, 2010 by disc0 Link to comment Share on other sites More sharing options...
Guest blc Posted January 31, 2010 Report Share Posted January 31, 2010 Ok, so this is what I get so far.. Compilled the new kernel, added an extra padding page (2048 bytes of 00) in the init of the file, made the boot img and edit the boot-img header to remove 0x800 (2048) bytes from the kernel size and flashed to the phone.. Now instead of going directly to the fastboot i get stuch on acer logo, witch means its booting from the new kernel.. The problem is the damm logo in front, I need to see whats going in the background, and need to get rid of the logo.. Need to search if there is a way... Does fastboot accept it if you just do "fastboot -i 0x0502 boot <yourimg.img>" ? Link to comment Share on other sites More sharing options...
Guest disc0 Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) Does fastboot accept it if you just do "fastboot -i 0x0502 boot <yourimg.img>" ? No, maybe because the hash calculated.. Fastboot just sends the boot.img to the phone, and bootloader verifies it! Acer made some changes to boot only from certain kinds of boot.img.. Four our good, flash acepts all, or we would be really really screwed.. At least know I understand how that stupid boot.img works, lost all last night reading tons of source code, but with all the sleep I had could'nt get it.. Today finally I figured it out! Edited January 31, 2010 by disc0 Link to comment Share on other sites More sharing options...
Guest bais Posted January 31, 2010 Report Share Posted January 31, 2010 This just sounds so confusing for people like me xD. Anyway, looks promising, maybe there's still hope after all... Keep up guys :) Link to comment Share on other sites More sharing options...
Guest disc0 Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) Think I got why acer bootloader don't acept the boot.img.. I'll post somethint soon... Edited January 31, 2010 by disc0 Link to comment Share on other sites More sharing options...
Guest maxisma Posted January 31, 2010 Report Share Posted January 31, 2010 Think I got why acer bootloader don't acept the boot.img.. I'll post somethint soon... nice.. Link to comment Share on other sites More sharing options...
Guest blc Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) No, maybe because the hash calculated.. Fastboot just sends the boot.img to the phone, and bootloader verifies it! Acer made some changes to boot only from certain kinds of boot.img.. Four our good, flash acepts all, or we would be really really screwed.. At least know I understand how that stupid boot.img works, lost all last night reading tons of source code, but with all the sleep I had could'nt get it.. Today finally I figured it out! Yep, but my guess is that if you're not getting the verification from bootloader, it's not going to work in flashed either. I flashed one dvt build without bootloader verification and ended up in Acer logo bootloop. So, when we figure how to go pack kernel properly, I think we will get some real progress here. I hope Paul can shed some light here as he obviously knows the area we are talking about B) Think I got why acer bootloader don't acept the boot.img.. I'll post somethint soon... Good! Interested to hear about your findings... :) Edited January 31, 2010 by blc Link to comment Share on other sites More sharing options...
Guest erto90 Posted January 31, 2010 Report Share Posted January 31, 2010 Think I got why acer bootloader don't acept the boot.img.. I'll post somethint soon... very nice,then kernel is good but only hard to use right? :) Link to comment Share on other sites More sharing options...
Guest disc0 Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) the trouble is in the sha hash, I already fixed mkbootimg to write the correct kernel size, now I'm trying to figure out how acer made the check.. Paul shoul have discovered because he made a working boot.img.. I'm testing different combinations and see what happens.. But now need to get some dinner.. EDIT: @blc, yes, flashing and booting works fine even if boot only don't.. BRB.. EDIT2: Ok, its confirmed, acer made some tweeks in the verification of the boot.img when using "fastboot boot", but not in flash.. In the meanwhile, I rebuild the mkbootimg and now can be used to flash successfully any boot.img to the liquid.. Now it trims all zeros before and after the kernel, informs the correct kernel size in the header, and adds the extra 2048 bytes after the header.. It cannot only be used to boot directly until someone finds what acer did to the bootloader.. I think that Paul knows because his superboot.img works fine, so, lets help he can tell as what it is... If someone wants it I can post it somewhere to download.. (only for linux86) Edited February 1, 2010 by disc0 Link to comment Share on other sites More sharing options...
Guest vache Posted February 1, 2010 Report Share Posted February 1, 2010 Of course we want it, nice find :) Link to comment Share on other sites More sharing options...
Guest CedricGatay Posted February 1, 2010 Report Share Posted February 1, 2010 I second this ! Link to comment Share on other sites More sharing options...
Guest three_pineapples Posted February 1, 2010 Report Share Posted February 1, 2010 I have no idea if this will help, but there was talk about repacking boot.img in this thread: http://android.modaco.com/content-page/298...adress/page/20/ I think AcerDroid figured it out finally. But you probably already know the stuff in this thread and are having some other problem :) Link to comment Share on other sites More sharing options...
Guest behnaam Posted February 1, 2010 Report Share Posted February 1, 2010 I may get my hands on a engineering spl people, hopefully without validation tests in bootloader Link to comment Share on other sites More sharing options...
Guest maxisma Posted February 1, 2010 Report Share Posted February 1, 2010 I may get my hands on a engineering spl people, hopefully without validation tests in bootloader nice.. Link to comment Share on other sites More sharing options...
Guest disc0 Posted February 1, 2010 Report Share Posted February 1, 2010 (edited) I renamed it acermkbootimg. Don't forget to edit repack-bootimg.pl, or change the name back to the original.. I have no idea if this will help, but there was talk about repacking boot.img in this thread (...) I based my research in that topic hehe.. BTW: the "--base" flag is ussless, dosn't do nothing, like in behnaam's mkbootimg (I think), so don't need to be passed... Download file Edited February 1, 2010 by disc0 Link to comment Share on other sites More sharing options...
Guest maxisma Posted February 1, 2010 Report Share Posted February 1, 2010 (edited) I renamed it acermkbootimg. Don't forget to edit repack-bootimg.pl, or change the name back to the original.. I based my research in that topic hehe.. BTW: the "--base" flag is ussless, dosn't do nothing, like in behnaam's mkbootimg (I think), so don't need to be passed... Download file Thanks, good job, will try it with my Kernel now.. Edit: No luck.. doesnt boot Edited February 1, 2010 by maxisma Link to comment Share on other sites More sharing options...
Guest vache Posted February 1, 2010 Report Share Posted February 1, 2010 We need a way to check console/logs. Could be really helpfull to see what append exactly. For now, i'm out for somes days, problems IRL. Good Luck Link to comment Share on other sites More sharing options...
Guest disc0 Posted February 1, 2010 Report Share Posted February 1, 2010 Thanks, good job, will try it with my Kernel now.. Edit: No luck.. doesnt boot I tried too with no luck.. We need proper .config file.. Tomorrow I'll try to play a little with it and see what happens, I'm gonna take the day to rest a little.. We need a way to check console/logs. Could be really helpfull to see what append exactly. For now, i'm out for somes days, problems IRL. Good Luck I would like to see them too :\ Maybe with the so enginnering spl we could have them ?? Link to comment Share on other sites More sharing options...
Guest pajn Posted February 1, 2010 Report Share Posted February 1, 2010 I mailed acer about the PVT. The will not release it. Dear rasmus eneman, Thank you for contacting Acer UK. I’ll be happy to assist you… Regarding the issue you have informed about the release of kernel source code ,further the PVT defcont not being released . Further request to call our Acer Technical support Line as they might help you further . For further support please e-mail or Call our Acer Premium Support Line on 0906 706 8000.Call costs 50p per minute. We appreciate your interest for sending us e-mail and will be glad to assist you further to the extent possible. Respectfully, Acer UK Online Technical Support Link to comment Share on other sites More sharing options...
Guest wc326 Posted February 1, 2010 Report Share Posted February 1, 2010 I mailed acer about the PVT. The will not release it. so does this mean , no custom rom, no 1ghz for acer??? or is there another way if that is the case i will not buy any more acer prodcut.. since they mostly suck anyways Link to comment Share on other sites More sharing options...
Guest erto90 Posted February 1, 2010 Report Share Posted February 1, 2010 so does this mean , no custom rom, no 1ghz for acer??? or is there another way if that is the case i will not buy any more acer prodcut.. since they mostly suck anyways me too,fucker acer hope there will be a solution.. Link to comment Share on other sites More sharing options...
Guest maxisma Posted February 1, 2010 Report Share Posted February 1, 2010 So, We'll have to reverse engineer.. Link to comment Share on other sites More sharing options...
Guest erto90 Posted February 1, 2010 Report Share Posted February 1, 2010 So, We'll have to reverse engineer.. mm and is possible? how know how to do? thanks to all! :) Link to comment Share on other sites More sharing options...
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