Difference between revisions of "Didj Explorer Kernel"

From eLinux.org
Jump to: navigation, search
(Added to category didj)
(Blanked the page)
Line 1: Line 1:
'''This is a work in progress'''
 
Explains what to change in order to build the 2.6.31 LF Explorer kernel for Didj. Use your DJHI to boot the zImage from uSD.
 
  
1. make lf1000_ts_defconfig
 
 
2.  edit .config. (we are enabling jffs2 and giving the right bootargs):
 
 
<code>
 
 
CONFIG_CMDLINE="mem=18M mlc_fb=0x01200000,0x01200000 init=/sbin/init console=ttyS0,115200 root=31:06 ro rootflags=noatime rootfstype=jffs2 ubi.mtd=Brio ubi.mtd=prg_Brio ubi.mtd=Cartridge"
 
 
CONFIG_JFFS2_FS=y
 
 
</code>
 
 
3. edit line 184 of linux2.6/Makefile to point to your cross compiler (or comment it out if you know the varaible is set elsewhere).
 
 
4. edit include/asm/mach-types.h (the number has changed to 2028 - but the boot loader only knows about 1235)
 
 
(you may need to 'make' once and ctrl-c to get the mach-types file generated the first time.)
 
<code>
 
 
//define MACH_TYPE_ZIR2412              1235
 
 
define MACH_TYPE_DIDJ                1235
 
 
...
 
 
//define MACH_TYPE_DIDJ                2028
 
 
</code>
 
 
4.1 instead of editig mach-types.h you can edit the file that it is generated from, mach-types (no.h!)
 
in /linux-2.6/arch/arm/tools, edit the file and look for 2028, copy everything on the line upto 2028:
 
 
'''didj MACH_DIDJ DIDJ '''
 
 
comment out the 2028 line and now search for 1235 and replace the line with the above, make sure you add 1235 to the end:
 
 
'''didj MACH_DIDJ DIDJ 1235'''
 
 
This allows you to do 'make clean' without having to re-edit mach-types.h each time, if you also own an explorer you might not want to do this.
 
 
5. edit drivers/mtd/nand/lf1000.c (using didj's 9 partition scheme)
 
 
[http://pastie.org/1056564 Unified diff 0f changes to drivers/mtd/nand/lf1000.c]
 
 
[http://pastebin.com/FX0SbZzM Alternate site: Unified Diff of changes to drivers/mtd/nand/lf1000.c]
 
 
6. Edit arch\arm\mach-lf1000\include\mach\mlc.h
 
#define MLC_MAJOR 251
 
#define MLC_LAYER_MAJOR 250
 
This will enable the mlc driver to work with /dev/mlc
 
 
7. make
 
 
zImage is found in arch/arm/boot
 
 
To mount /Didj:
 
 
<code>
 
mount -t vfat -o async,noatime /dev/mtdblock9 /Didj
 
</code>
 
 
For framebuffer configuration see [[Leapster_Explorer_Framebuffer_Driver]]
 
 
For MMC Card configuration see [[Didj_and_Explorer_MMC_Patch]]
 
 
 
[[Category:didj]]
 

Revision as of 02:58, 21 July 2011