[TOOL] NEW <<--->> OLD Bootloader ROM Converter v1.0

P990 ROM Converter
from New BootLoader to Old and vice versa​

Actually this tool is Tonyp’s idea. All credits to him.

He asked me if I am interested in making a script and automating the rom porting from one bootloader to the other and he assisted me with all the changes that need to be done.

Due to different EOL (end of line) termination in text files between UNIX-Linux (LF) and windows (CRLF), I had to make bash (linux) scripts necessarily. The good thing is that the tool can be used in both windows and linux systems.
​

Installation:
Download and extract the attached ROM-Converter-tools.zip package anywhere you like.
Download and extract in the same folder, a newer ROM-Converter-scripts.zip if exists.

For Windows systems only:
Install Cygwin following the instructions below:

Download setup-x86.exe from here http://cygwin.com/install.html
Attention!! Even if you are running x64 windows system install the x86 version. DO NOT install the x64 cygwin version because two binaries (mkbootfs.exe & mkbootimg.exe used to pack boot.img do not work properly).

Run the setup-x86.exe, when the list of packages is shown make sure you add the following:

• Expand Archive and select zip & unzip to be installed
• Expand Utils and select cpio to be installed
• Expand Perl and select ‘perl: Larry Wall’s Practical..’ and perl_vendor to be installed

(If you are already using cygwin run setup again and add the above packages to be installed.)

For Linux systems only:
Download the attached linux-mkboot-binaries.zip (mkbootfs, mkbootimg), extract them in tool folder and remove the windows ones (mkbootfs.exe, mkbootimg.exe).
​

How to use it:

Put the source ROM.zip(s) in the 'source_zips' folder (otherwise you’ll be prompted to drag n’ drop it in terminal)
Open Cygwin. Type cd (leave a space after cd) and type /cygdrive/c/dir1/dir2/../ROM-Converter-tools
where “c/dir1/dir2/../ROM-Converter-tools” is the full path of the folder you extracted the convert-tool package (e.g C:\dir1\dir2\..\ROM-Converter-tools) and press enter.

In case of long pathname, instead of typing the whole of it, use one of the following tips to easily change to tool's path.
Tip#1: After you type cd , drag n’ drop from windows explorer into cygwin terminal, the folder "ROM-Converter-tools" and it wiil automatically be converted to ‘/cygdrive/c/dir1/dir2/../ROM-Converter-tools’ press enter and that’s it.
Tip#2: After cd /cygdrive/c/ type the 1st one or two letters of the next subdir and autocomplete it's name with TAB.

Type one of these commands in cygwin terminal:

​

What it does:
The scripts use as input the 'files2convert.txt' which contains all possible files needed to be converted.
This is for compatibility purposes to support as many roms as possible and for future changes.
files2convert.txt

More files can easily be added for conversion if needed.
The converter:

1. Extracts source ROM zip
2. Unpacks the boot.img
3. Reads the above files, replacing partitions' mount points, among some othe things, for the selected bootloader
4. Replaces the kernel image for the selected bootloader
5. Builds new boot.img
6. Creates new converted ROM zip

Under 'kernels' folder there are already included the two latest Kowalski kernel images (zImage) for old & new BL and its modules.
You can add more kernels and you’ll be prompted to choose the desired one when converting a ROM (if more than one is found ).
Read how to do this:
Attention: Current version will hopefully work on CM-based ROMs.
Stock based ROMs need more files to be changed, but they are not included yet, because I don't have the whole info needed.

Hopefully @rugglez or someone else will be willing to help.
Till then avoid converting stock-based roms, (or if you do try, then after converting replace the boot.img in converted rom and "system/lib/modules/*" at least with a working boot.img and modules from another stock-based rom, for this bootloader of course. This could work but I am not the expert to say)
​

ChangeLog:
Version 1.0 Aug 23, 2013
- The two convert2xxx_bl.sh scripts are now integrated into one script convert_rom.sh.
- The new convert_rom.sh also accepts an optional switch [-stepmode].
- A technique added to preserve whitespaces in converted lines. So converted files keep margins and whitespaces of the source ones.
- Script checks whether source rom is a newbl or an oldbl one, displays an error message if rom is not for the expected bootloader and exits.

Version 0.3b Aug 23, 2013
-a typo fixed in converting scripts

Version 0.2b Aug 23, 2013
-liblgeril.so is also replaced with the one for the oldbl or newbl accordingly.
-A forced removal (switch -f) added when removing files and dirs just in case.
-Converted ROM name will be built automatically from the source name suffixed by -oldbl or -newbl accordingly. (If source rom's name contains 'newbl' or 'oldbl' it will be substituted by 'oldbl' or 'newbl' accordingly)
-Converted ROMs are now created under 'converted_roms' folder.
-Converting to oldbl: Files 'check_sdcard.sh' and 'lgdrm.img' are being removed if exist (as they are not used)
-Converting to newbl: Charger dependent images are also copied in ramdisk (not only the charger binary).
-Kernel modules will also be replaced with the ones coming with specific kernel image.
-Kowalski Kernel images & modules, in kernels folder, are replaced with latest ones dated:2013072013. (it was my fault, the previous ones were downloaded from "releases" download folder and were dated 20230303)
-Some changes in display messages.

Version 0.1b Aug 19, 2013
-1st beta version
​

./convert_rom.sh -stepmode   #--> starts in step-mode for debugging purposes
./convert_rom.sh             #--> runs unattended (with no pauses).

========================================
P990 ROM Converter v1.0
Converting script by SpyrosK
Converting info by TonyP
Date: Aug 23, 2013
========================================

Converts a ROM for the other bootloader.

Select the desired convertion:
----------------------------------------
1 - Convert ROM for OLD BootLoader
2 - Convert ROM for NEW BootLoader

X - Cancel

Please type your selection [1,2,X]: ​