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Build
Get the LiteBSD sources:
$ cd $HOME
$ git clone https://github.com/sergev/LiteBSD.git
Download and install GCC toolkit for MIPS. You can use Mentor Sourcery CodeBench Lite toolchain (Linux, Win32).
$ wget https://sourcery.mentor.com/GNUToolchain/package12725/public/mips-sde-elf/mips-2014.05-24-mips-sde-elf-i686-pc-linux-gnu.tar.bz2
$ sudo tar xvjf mips-2014.05-24-mips-sde-elf-i686-pc-linux-gnu.tar.bz2 -C /usr/local
For Mac OS, use a precompiled package gcc-4.8.1-mips-macosx.tgz.
$ wget https://github.com/sergev/LiteBSD/releases/download/tools/gcc-4.8.1-mips-macosx.tgz
$ sudo tar xvjf gcc-4.8.1-mips-macosx.tgz -C /usr/local
As an alternative, you can build GCC from sources, following these instructions: Installation of GCC toolchain for MIPS architecture.
Setup shell environment:
$ export BSDSRC=$HOME/LiteBSD
$ export MIPS_GCC_ROOT=/usr/local/mips-2014.05
$ export MAKESYSPATH=$BSDSRC/share/mk-pic32
BSDSRC is a path to LiteBSD source directory. MIPS_GCC_ROOT contains the installation root of the installed GCC toolkit. MAKESYSPATH selects a PIC32-specific set of mk files for BSD make utility. It makes sense to out these three lines to your ~/.bashrc file.
Install a BSD make, and some other required utilities. For Ubuntu or Debian Linux, use:
$ sudo apt-get install bmake git gcc-multilib byacc flex exuberant-ctags libfuse-dev
For Mac OS X:
$ sudo port install bmake
BSD make can have a different name on your system. Use bmake alias for compatibility.
Compile the kernel:
$ cd $BSDSRC
$ bmake kernel
A binary file vmunix will be created:
$ /usr/local/mips-2014.05/bin/mips-sde-elf-size sys/compile/WIFIRE.pic32/vmunix
text data bss dec hex filename
496208 13816 18472 528496 81070 sys/compile/WIFIRE.pic32/vmunix
HEX file for programming into the board is located as sys/compile/WIFIRE.pic32/vmunix.hex .
Build the contents of the root filesystem:
$ cd $BSDSRC
$ bmake build
The target filesystem tree will be placed in a DESTDIR subdirectory of $BSDSRC:
$ ls -l $BSDSRC/DESTDIR
total 8
-r--r--r-- 1 vak staff 3425 21 фев 01:14 COPYRIGHT
drwxr-xr-x 31 vak staff 1054 21 фев 01:14 bin/
drwxr-xr-x 4 vak staff 136 21 фев 01:14 dev/
drwxr-xr-x 49 vak staff 1666 21 фев 01:14 etc/
drwxr-xr-x 7 vak staff 238 21 фев 01:14 root/
drwxr-xr-x 50 vak staff 1700 21 фев 01:14 sbin/
lrwxr-xr-x 1 vak staff 11 21 фев 01:14 sys@ -> usr/src/sys
drwxr-xr-x 2 vak staff 68 10 дек 21:51 tmp/
drwxr-xr-x 9 vak staff 306 10 дек 21:54 usr/
drwxr-xr-x 6 vak staff 204 10 дек 21:52 var/
Build the SD card image.
$ cd $BSDSRC
$ bmake fs
The resulting file is sdcard.img. It contains three partitions: root filesystem (200Mb), swap space (32Mb) and user /home area (100).
$ fdisk -l sdcard.img
Disk sdcard.img: 348 MB, 348128256 bytes
1 heads, 63 sectors/track, 10792 cylinders, total 679938 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
sdcard.img1 * 2 409601 204800 b7 BSDI fs
sdcard.img2 409602 475137 32768 b8 BSDI swap
sdcard.img3 475138 679937 102400 b7 BSDI fs
You need to put a filesystem image on a SD card. On Windows, use Win32DiskImager utility. On Linux or Mac OS, run:
$ sudo bmake installfs SDCARD=/dev/XYZ
Here XYZ is a device name of SD card, as recognized by Linux (sdb in my case). Use lsblk utility to find out the device name.