* Now talking on #multirom
* Topic for #multirom is: MultiROM v16 - booting all your things | mako: http://bit.ly/GG7O4D | flo: http://bit.ly/1huZdNx | grouper: http://bit.ly/15UzSHH
* Topic for #multirom set by Tassadar at Mon Oct  7 01:43:19 2013
<yuga> While porting multirom to the Xperia Z, I found that TWRP was using the multirom binary from the Internal storage. I was wondering why can't it just use the binary that is already in the ramdisk>
<yuga> ?
* Tassadar pokes alvinmobileltd
<alvinmobileltd> Why me??? :(
<Tassadar> well I don't have multirom in ramdisk)
<alvinmobileltd> It hurts :(
<yuga> Hmm.
<alvinmobileltd> Actually, I think the original one puts trampoline directly in the Android ramdisk
<yuga> Because the installer zip seems to repack the ramdisk with the binary
<Tassadar> yeah, of course, it's the init
<alvinmobileltd> Nexus devices and most non-Xperia devices doesn't have the concept of combinedroot
<alvinmobileltd> Mine using combinedroot is quite a different approach
<yuga> Yup. Alvin has a different structure. What I was trying was to see if we could port Tasssadar's binary.
<Tassadar> yuga: if you're using my branch and not alvinmobileltd's and by multirom binary you mean trampoline, then it's because
<Tassadar> well
<Tassadar> TWRP doesn't even use trampoline for anything
<yuga> Oh.
<Tassadar> it just installs it to the initrd, if requested
<Tassadar> the multirom binary isn't in ramdisk
<yuga> My bad, then
<yuga> So yours just repacks the ramdisk with trampoline > init?
<Tassadar> *shouldn't be, I've noticed that omnirom builds of TWRP have multirom binaries on root, but it's not intentional and who cares)
<Tassadar> yeah
<Tassadar> well and moves some symlinks so they point to the real init
<Tassadar> *in root
<yuga> ueventd?
<yuga> watchdog?
<yuga> That's all right?
<alvinmobileltd> The recovery ramdisk is copied from the boot ramdisk and then modified
<Tassadar> yeah
<yuga> Ok, i'll go try this.
<alvinmobileltd> So if you build multirom and then build recovery, multirom will get copied to recovery
<alvinmobileltd> in Tassadar's approach.
* alvinmobileltd is now known as alvinhochun-away
<Tassadar> rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro
<Tassadar> (just need to note that somewhere..)
<Tassadar> http://www.xda-developers.com/android/boot-multiple-roms-on-the-htc-droid-dna-with-unofficial-multirom-port/ multirom's getting on all the phones these days Oo
<yuga> Great news :D
<Tassadar> alvinhochun-away: by the way, are you interested in that Android app I made for MultiROM? It should be pretty doable to have it working even with unofficial ports
* alvinhochun-away is now known as alvinmobile
<alvinmobile> hm, what does it do?
<Tassadar> installs MultiROM, it's recovery and kernel, checks for updates, can rename and delete installed ROMs and boot into that ROM directly from android
<Tassadar> (and also installs Ubuntu Touch, if the device supports it)
<Tassadar> *its
<alvinmobile> Not sure how it will work with all my changes
<Tassadar> installation consists of dd'ing the recovery to the partition and flashing the ZIPs via recovery (using OpenRecoveryScript)
<Tassadar> ...and I forgot you don't have recovery partition
<Tassadar> never mind then
<alvinmobile> For instance, the way of installing multirom itself and recovery is already not the same. I still haven't started modifying the zip
<alvinmobile> And I am still rewriting some parts of multirom
<alvinmobile> Also my modified multirom now only boots ext4 images, by replacing block device like I've mentioned before
<Tassadar> the app doesn't care about that, the only problem is with installing the recovery (and rebooting into it), which is completely different in your version
<alvinmobile> Don't know if I'll add back bind-mount or symlink since it requires changing init.rc too much
<alvinmobile> How do you autoboot other rom in a secondary rom?
<alvinmobile> I mean where do you store the info?
<Tassadar> it runs "multirom --boot-rom=nameoftherom" in su shell, and MultiROM takes care of that - it loads ROM list as usual and either directly kexecs the required kernel or sets force-autoboot into rom X (which saves into multirom.ini) and reboots
<Tassadar> it's in multirom git
<Tassadar> https://github.com/Tasssadar/multirom/commit/1eb2fe13a013b033f88928d96343752b41096cf4
<Tassadar> (there are some fixes for that in following commits)
<alvinmobile> oh I see, it kexec directly from Android
<alvinmobile> I currently place multirom in ramdisk and it is deleted before actually booting internal rom, and secondary rom's ramdisk does not have it.
<Tassadar> I may have not realized how many changes you made when I suggested you use that app)
<alvinmobile> Yep, a lot of changes
<alvinmobile> Well, maybe in the future I can look into merging my changes back to yours tree, but if I really do this it will certainly cause breaking changes to one of the two
<alvinmobile> maybe even both
<alvinmobile> Perhaps with some hacky way I can make your app work with mine
<Tassadar> to be honest, I don't really want to support devices with such practices like not having boot partition
<alvinmobile> Will look into it when I get twrp working
<Tassadar> *recovery partition
<alvinmobile> Actually it's not really that bad. Have you seen what my trampoline now does?
<Tassadar> eeh no
<Tassadar> yeah, you replace the initrd
<Tassadar> still, I simply don't get why they don't have recovery partition, it doesn't make any sense - who was like "hm, I think merging it with boot so that it has the same kernel is a good idea, let's put our programmers to make that happen instead of having them do something else"
<alvinmobile> Xperia devices doesn't even have stock recovery
<Tassadar> how do they do updates, via computer?
<alvinmobile> 1. Via PC, with a special flash mode
<alvinmobile> or, 2. There is a special partition called FOTAkernel, which I believe hosts a special recovery used to do FOTA updates
<Tassadar> and that partition is too small to host an actuall recovery, I guess?
<alvinmobile> It's 15MB, already too big
* Tassadar realizes that actual has only one l and that he has to stop writing -ll
<Tassadar> why don't you use that for recovery?
<alvinmobile> Because reboot recovery doesn't boot that
<Tassadar> how do you make it boot from that partition?
<alvinmobile> I think it needs to be reboot oem-f
<alvinmobile> I haven't tried though
<Tassadar> that still seems much better than messing with it in boot
<alvinmobile> It's in the kernel source so I suspect that's it
<alvinmobile> Actually I can modify the kernel to make reboot recovery boot that
<alvinmobile> But it seems that most Xperia devs uses the combinedroot way
<alvinmobile> There're actually a lot of things I can do, but I am scared of bricking it
<Tassadar> does it have fastboot?
<alvinmobile> Yes it has fastboot
<alvinmobile> Anyway, combinedroot is actually a nice way since there can be multiple recovery systems
<Tassadar> how big is your boot?
<alvinmobile> 20mb
<alvinmobile> the kernel is just 6mb btw
<alvinmobile> It's funny that they don't just make a recovery partition directly but made it something else
<Tassadar> Dees_Troy of TWRP says that Sony will stop doing that in their future phones, according to some people he knows in Sony
<alvinmobile> oh, that's better
* alvinmobile has quit (Quit: Leaving)
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* Topic for #multirom set by Tassadar at Mon Oct  7 01:43:19 2013
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* Topic for #multirom is: MultiROM v16 - booting all your things | mako: http://bit.ly/GG7O4D | flo: http://bit.ly/1huZdNx | grouper: http://bit.ly/15UzSHH
* Topic for #multirom set by Tassadar at Mon Oct  7 01:43:19 2013
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* Topic for #multirom set by Tassadar at Mon Oct  7 01:43:19 2013
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* Topic for #multirom is: MultiROM v16 - booting all your things | mako: http://bit.ly/GG7O4D | flo: http://bit.ly/1huZdNx | grouper: http://bit.ly/15UzSHH
* Topic for #multirom set by Tassadar at Mon Oct  7 01:43:19 2013
* alvinhochun-away is now known as alvinmobile