Custom MTD Partitions
This is an implimentaion of lbcoder's Custom partition layouts
be sure to checkout that thread for the full history
What does it do?
Well, basically Custom MTD Partitions resizes your MTD partitions
for instance this is a CM6.1RC1, ( heavily customised )
most of my Apps are on sd-ext, dalvik-cache is on data
/dev/cache is where the real cache partition is mounted, /cache is actually a bind mount from /sd-ext/cache
Applicable to..
Probably any device that uses the same kind of nand as the G1 MT3G ( msm_nand )
The intial scripts are geared towards G1 / MT3G. however I have 'rewritten' much of the script for v1.5 , it now reads the partition table in dmesg, so it _should_ be universal **
v1.5.3 confirmed to work on heroc
v1.5.6 confirmed to work on bravo + bravoc ( with S-OFF )
unsure if it will work with your device? checkout the source on github ( or ask your favourite dev to take a look )
The 'Tech' in Breif
This method is beautifully simple...
When booting we give the kernel the mtd partition table we want to use..
Thats it
In practice we need to do this when booting to recovery, and booting the rom.
below are files to make this as simple flashing a rom.
Credits :-
Safety First
This method is safe, however it is not without risk
Two things could potentially go wrong
*NB* don't use a patched recovery to flash SPL or RADIO ( you should avoid using recovery to flash these anyway, feel free to ask for current advice on spl / radio flashing )
Prevention is better than cure
I have only managed to corrupt partitions when switching partition layouts while having files on cache or data, for example going from System 67.5 Cache 67.5 to System 90 cache 5 with
cache approx 80% 'used'...
I have not been able to repeat this if I wipe Cache before rebooting,
therefore I advise that you wipe both cache and data * after patching recovery ( and rebooting )
* along with system if you are using clockwork
OK, now lets patch recovery and a ROM
Install Instuctions
It really is quite simple
* configuration
The script in the recovery patcher checks for /sdcard/mtdpartmap.txt and reads that to override the default sizes.
e.g. for system 90mb and cache 2mb
NB make sure you mount sdcard first, else you won't write to sdcard/mtdpartmap.txt !
data would be 117.8mb ( 116.7 useable )
e.g. for system 55mb and cache 2mb ( Purhaps a nice 'sugar free' Donut )
data would be 152.8mb ( 151.7 useable )
NB, above data sizes are for G1s, MT3Gs should add ~78mb
All In One Patch runner ( New to v1.5.3 )
new option to run the All In One Patch script ( versions 1.3.6 and higher )
the format is
e.g.
By default it will install the sd-ext mount ( option sdext )
so a line just reading aio will be fine
Note: the patch must be on the root of the sdcard, and its file name must start with "fr-patch" and end with ".txt"
if you have several versions the newest ( as per files datetime stamp ) will be used
Faking your SPL
If your using an SPL that is not officially supported by your ROM and that ROM checks your SPL you can 'patch' to fake it.
note that we are using ">>" here, this is to append to the file ( ">" would overwrite it )
you can by all means use any text editor you like, the script will automatically convert to unix format
NOTE : you are dodging the checks the ROM dev put in place, do not complain to them if this doesn't workout for you
in post 2 I have some 'CM6' Kernels I compiled for (1)0.95.xxxx SPLs
but I will only likely do these for RCs and Finals ( and there maybe a delay ).
In that post I point you towards the 'SafeSPL' ( 1.33.2003 ) this SPL is compatible with the current CM6 kernels ( so no need to wait for me or someone else to compile with bluetooth as modules ), but 1.33.2003 is not 'officially' supported ( its stock at 67.5mb system ) so you need to Fake your SPL ( say 1.33.2005 ) and resize to 90mb system ( or whatever you feel is optimum )
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Downloads
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http://tinyurl.com/customMTD
aab0fadf658ed275954aea8d0aed9c8f FR-AutoMTD_partitionPatcher_v1.5.6.tar.bz2
8857194cdbe34a52d173def4441ad2ae FR-AutoMTD_partitionPatcher_v1.5.6.zip
1f84a5ec50684a7830a93a8d455bc159 FR-boot-rpp-v1.5.6-CustomMTD_S.zip
bca0360f91aed0acf6e2dc82dfe01b56 FR-boot-v1.5.6-CustomMTD_S.zip
94b4238c2668cbe7cd52fb8ad5a2ee12 FR-recovery-v1.5.6-CustomMTD_S.zip
5404f1a41dbc60105d59c7fa0c335a70 FR-remove-v1.5.6-CustomMTD_S.zip
NB New Config option !!! to automatically run fr-patch136+
e.g.
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ROM Zip Patcher for Devs
To make life even simpler for end users it is possible to integrate the 'patch' within a ROM
AutoMTD_partitionPatcher_v1.5.6.zip
currently Linux only,
within the zip is a tarball, untar that.
get that directory into your PATH, ( or just cd into it )
and then execute
it will then
The Future....
lbcoder has already suggested ways in which we can implement this 'on the fly'
so for instance it would be possible for a ROM , to instruct recovery what MTD partition layout is required, reload mtd kernel modules, and then flash ROM + boot.img
for those with huge partitions
Hey, you could go all silly and dual boot between ROMs ..
Anyway, enjoy and feel free to modify/improve on these
Changelog
v1-5-6 : 2010-10-28
This should be last version we need
v1-5-1 : 2010-08-06
Version numbers brought into sync
=< v1.4
Todo
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Downloads
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mediafire downloads
http://tinyurl.com/customMTD
aab0fadf658ed275954aea8d0aed9c8f FR-AutoMTD_partitionPatcher_v1.5.6.tar.bz2
8857194cdbe34a52d173def4441ad2ae FR-AutoMTD_partitionPatcher_v1.5.6.zip
1f84a5ec50684a7830a93a8d455bc159 FR-boot-rpp-v1.5.6-CustomMTD_S.zip
bca0360f91aed0acf6e2dc82dfe01b56 FR-boot-v1.5.6-CustomMTD_S.zip
94b4238c2668cbe7cd52fb8ad5a2ee12 FR-recovery-v1.5.6-CustomMTD_S.zip
5404f1a41dbc60105d59c7fa0c335a70 FR-remove-v1.5.6-CustomMTD_S.zip
The attached files are OLD
This is an implimentaion of lbcoder's Custom partition layouts
be sure to checkout that thread for the full history
What does it do?
Well, basically Custom MTD Partitions resizes your MTD partitions
for instance this is a CM6.1RC1, ( heavily customised )
Code:
Filesystem Size Used Available Use% Mounted on
/dev/block/mtdblock3 73.0M 72.8M 236.0K 100% /system
/dev/block/mtdblock5 134.8M 107.2M 27.6M 80% /data
/dev/block/loop0 896.0K 896.0K 0 100% /system/lib/modules
/dev/block/loop1 4.0M 4.0M 0 100% /system/xbin
/dev/block/mmcblk0p2 457.4M 201.8M 231.1M 47% /sd-ext
/dev/block/mmcblk0p2 457.4M 201.8M 231.1M 47% /cache
/dev/block/mtdblock4 2.0M 776.0K 1.2M 38% /dev/cache
/dev/cache is where the real cache partition is mounted, /cache is actually a bind mount from /sd-ext/cache
Applicable to..
Probably any device that uses the same kind of nand as the G1 MT3G ( msm_nand )
The intial scripts are geared towards G1 / MT3G. however I have 'rewritten' much of the script for v1.5 , it now reads the partition table in dmesg, so it _should_ be universal **
v1.5.3 confirmed to work on heroc
v1.5.6 confirmed to work on bravo + bravoc ( with S-OFF )
unsure if it will work with your device? checkout the source on github ( or ask your favourite dev to take a look )
The 'Tech' in Breif
This method is beautifully simple...
When booting we give the kernel the mtd partition table we want to use..
Thats it
In practice we need to do this when booting to recovery, and booting the rom.
below are files to make this as simple flashing a rom.
Credits :-
- Lbcoder - for coming up with the idea
- Skraw ( CM forums ) - for getting lbcoder interested
- Koush - for AnyKernel
- Cyanogen & Co - for giving us all such great ROMs to play with
- Amon_RA and Koush - for giving us something to patch
- Techjosh - for fixing the patchers for use with Rogers (EBi1)
- Mblaster - for pointing out my nasty habit of using -r zip flag at the end of command ( breaks compatibility with older zip versions, fixed in AutoPatcher v1.5 )
Safety First
This method is safe, however it is not without risk
Two things could potentially go wrong
- Recovery flash corrupt
This is extremely unlikely, and tbh could happen anytime you flash recovery
If in the very unlikely event that you find you can't reboot to recovery you have three options- re-flash recovery via fastboot ( the preferred option )
- re-flash recovery via ROM ( not a great option with cm5.0.x/cm6 )
- Do the whole root thing all over again ( no one wants to do that )
- system, cache , data partition unmountable - corrupt
Under the right ( or wrong ) circumstances it is possible to get 'junk' files stuck in system ( or cache,data ), and in such away that recovery can not delete them, more serious corruption can render the partitions unmountable.
It is actually quite straight forward to fix this, but it does require fastboot
Code:fastboot erase system -w
Code:for i in system cache userdata;do erase_image $i;done
*NB* don't use a patched recovery to flash SPL or RADIO ( you should avoid using recovery to flash these anyway, feel free to ask for current advice on spl / radio flashing )
Prevention is better than cure
I have only managed to corrupt partitions when switching partition layouts while having files on cache or data, for example going from System 67.5 Cache 67.5 to System 90 cache 5 with
cache approx 80% 'used'...
I have not been able to repeat this if I wipe Cache before rebooting,
therefore I advise that you wipe both cache and data * after patching recovery ( and rebooting )
* along with system if you are using clockwork
OK, now lets patch recovery and a ROM
Install Instuctions
It really is quite simple
- download FR-recovery-v1.5.6-CustomMTD_S.zip and FR-boot-v1.5.6-CustomMTD_S.zip
- create mtdpartmap.txt and put on /sdcard/ see configuration *
- reboot to recovery
- nandbackup
- wipe cache + data
- flash FR-recovery-v1.5.6-CustomMTD_S.zip
- reboot to recovery ( reboot and hold Home )
- Either : -
- Nandrestore
- Flash ROM + extras
- flash FR-boot-v1.5.6-CustomMTD_S.zip
- reboot
* configuration
The script in the recovery patcher checks for /sdcard/mtdpartmap.txt and reads that to override the default sizes.
e.g. for system 90mb and cache 2mb
NB make sure you mount sdcard first, else you won't write to sdcard/mtdpartmap.txt !
Code:
echo "mtd 90 2" > /sdcard/mtdpartmap.txt
e.g. for system 55mb and cache 2mb ( Purhaps a nice 'sugar free' Donut )
Code:
echo "mtd 55 2" > /sdcard/mtdpartmap.txt
NB, above data sizes are for G1s, MT3Gs should add ~78mb
All In One Patch runner ( New to v1.5.3 )
new option to run the All In One Patch script ( versions 1.3.6 and higher )
the format is
Code:
aio <option1> <option2> <option3>...
Code:
aio swap remount shabang lwp
so a line just reading aio will be fine
Note: the patch must be on the root of the sdcard, and its file name must start with "fr-patch" and end with ".txt"
if you have several versions the newest ( as per files datetime stamp ) will be used
Faking your SPL
If your using an SPL that is not officially supported by your ROM and that ROM checks your SPL you can 'patch' to fake it.
Code:
echo "spl 1.33.2005" >> /sdcard/mtdpartmap.txt
you can by all means use any text editor you like, the script will automatically convert to unix format
NOTE : you are dodging the checks the ROM dev put in place, do not complain to them if this doesn't workout for you
in post 2 I have some 'CM6' Kernels I compiled for (1)0.95.xxxx SPLs
but I will only likely do these for RCs and Finals ( and there maybe a delay ).
In that post I point you towards the 'SafeSPL' ( 1.33.2003 ) this SPL is compatible with the current CM6 kernels ( so no need to wait for me or someone else to compile with bluetooth as modules ), but 1.33.2003 is not 'officially' supported ( its stock at 67.5mb system ) so you need to Fake your SPL ( say 1.33.2005 ) and resize to 90mb system ( or whatever you feel is optimum )
.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:.
Downloads
.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:.
http://tinyurl.com/customMTD
aab0fadf658ed275954aea8d0aed9c8f FR-AutoMTD_partitionPatcher_v1.5.6.tar.bz2
8857194cdbe34a52d173def4441ad2ae FR-AutoMTD_partitionPatcher_v1.5.6.zip
1f84a5ec50684a7830a93a8d455bc159 FR-boot-rpp-v1.5.6-CustomMTD_S.zip
bca0360f91aed0acf6e2dc82dfe01b56 FR-boot-v1.5.6-CustomMTD_S.zip
94b4238c2668cbe7cd52fb8ad5a2ee12 FR-recovery-v1.5.6-CustomMTD_S.zip
5404f1a41dbc60105d59c7fa0c335a70 FR-remove-v1.5.6-CustomMTD_S.zip
NB New Config option !!! to automatically run fr-patch136+
e.g.
Code:
mtd 90 2
spl 1.33.2005
aio swap remount shabang lwp a2sd
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ROM Zip Patcher for Devs
To make life even simpler for end users it is possible to integrate the 'patch' within a ROM
AutoMTD_partitionPatcher_v1.5.6.zip
currently Linux only,
within the zip is a tarball, untar that.
get that directory into your PATH, ( or just cd into it )
and then execute
Code:
PatchUpdateScript.sh <zip file to patch>
- create a temp directory ( in your current directory )
- copy your zip to it
- extract required files
- patch update(r)-script
- zip and sign.
The Future....
lbcoder has already suggested ways in which we can implement this 'on the fly'
so for instance it would be possible for a ROM , to instruct recovery what MTD partition layout is required, reload mtd kernel modules, and then flash ROM + boot.img
for those with huge partitions
Hey, you could go all silly and dual boot between ROMs ..
Anyway, enjoy and feel free to modify/improve on these
Changelog
v1-5-6 : 2010-10-28
- Calculate userdata size, greatly improves compatibility
- Added a version to patch a boot.img ( boot-rpp ) with run-parts
didn't want to , but some are using roms which don't have run-parts, so the 06BindCache script wasn't running - Added a remove version ( remove )
flashing this will return the recovery to SPL's layout
I may well integrate that better, so you don't need a separate zip - AutoMTD_partitionPatcher can convert a recovery.img to a AutoMTD flashable zip
PatchUpdateScript.sh <full path to>/recovery.img - boot patcher is much cleaner, it just uses the cmdline of the running recovery
- removed the default 90 2 sizing, you *must* set your own size in mtdpartmap.txt
- added stuff
- removed stuff
- moved stuff
- see v1-5-6
This should be last version we need
- greater compatibility with none dreams/sapphires
- option to launch All in One Patcher
- Bug fixes
- recovery was getting written to boot ( flash_image <partition> is now a variable )
- typo in env variable was causing cache and data calculations to fail
- AutoMTD now prints version number ( when flashing patched Zip )
- tided up system "0x" 'fudge' ( to be compatible with trout/sapphire fall back )
- removes temp files from memory when done
v1-5-1 : 2010-08-06
- Bug fixes, had an extra '0x' on the system start + functions had wrong env var for the location of dmesg derived partition map
Version numbers brought into sync
- Zipe Filename - 'reordered' ( easier to see version numbers in CWR )
- AutoMTD Patcher - changes as per boot Patcher + zip recursion fix ( my bad habit, thanks go to mblaster for pointing this out )
- Boot Patcher - cleaned up cache bind mount
- Now supports leagcy /system/sd mount point
[*]supports ROM Manager ( real cache partition mounted on /dev/cache, recovery dir symlinked from 'fake' to 'real' cache )
- Now supports leagcy /system/sd mount point
- Recovery Patcher - can 'fake' your SPL ( see configuration )
- Recovery Patcher - creates more noise ( advise wipe and reboot )
- Single Patcher script ( so I don't have make the same changes to three different files that essentially do the same job )
- No longer 'Hardcoded' to 32[a/b] Partition Layout ( figures out SPL layout via dmesg ) **
uses original boot/recovery img's base configuration ( i.e. EBi0 and EBi1 compatible )
=< v1.4
- Recovery Patcher v1.3, added SPL faker
- Boot Patcher v1.2, fixed oversite where boot.img was not 'dumped'
- Recovery Patcher v1.1 initial
- Boot Patcher v1.1 ( was a fail, it didn't patch boot.img on CM roms as the tmp boot.img was deleted, my fault for just using the AutoMTD Patcher's script ( which runs before the tmp boot.img is deleted )
- Boot Patcher v1 initial
Todo
- - 2010-08-13 redundent ( launching AIO script ) - I might add some stuff to cm5/6's backup routine via the Auto patcher, things like the "All in One" installed scripts: 05mountsd and remount
- windows compatible AutoMTD script ( meh, I hate batch scripts )
- - 2010-08-13 DONE - thinking of adding a config option to launch the "all in one" script, but have to make that recovery compatible first
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Downloads
.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*~*:.
mediafire downloads
http://tinyurl.com/customMTD
aab0fadf658ed275954aea8d0aed9c8f FR-AutoMTD_partitionPatcher_v1.5.6.tar.bz2
8857194cdbe34a52d173def4441ad2ae FR-AutoMTD_partitionPatcher_v1.5.6.zip
1f84a5ec50684a7830a93a8d455bc159 FR-boot-rpp-v1.5.6-CustomMTD_S.zip
bca0360f91aed0acf6e2dc82dfe01b56 FR-boot-v1.5.6-CustomMTD_S.zip
94b4238c2668cbe7cd52fb8ad5a2ee12 FR-recovery-v1.5.6-CustomMTD_S.zip
5404f1a41dbc60105d59c7fa0c335a70 FR-remove-v1.5.6-CustomMTD_S.zip
The attached files are OLD
Attachments
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FR-MTD-PartHack-recovery-v1-1_S.zip249.4 KB · Views: 2,499
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FR-MTD-PartHack-boot-v1-2_S_S.zip249.9 KB · Views: 2,137
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FR-recovery-v1.5.2-CustomMTD_S.zip251.4 KB · Views: 1,673
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FR-boot-v1.5.2-CustomMTD_S.zip251.3 KB · Views: 1,399
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AutoMTD_partitionPatcher_v1.5.2.zip110.2 KB · Views: 727
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FR-recovery-v1.5.3-CustomMTD_S.zip251.3 KB · Views: 5,777
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FR-boot-v1.5.3-CustomMTD_S.zip251.2 KB · Views: 5,569
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AutoMTD_partitionPatcher_v1.5.3.zip109.5 KB · Views: 2,022
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