----- Original Message -----

From: Clare Huang

To: u-boot-users@lists.sourceforge.net

Sent: Wednesday, August 02, 2006 4:30 PM

Subject: [U-Boot-Users] U-boot 1.1.3 support Bzip2 compression?

Hi all,

 

My platform is OMAP5912osk. 

The setps I create the bzip2 kernel image are :

************************************************************

arm-linux-objcopy -O binary -R .note -R .comment -S arch/arm/boot/compressed/vmlinux linux.bin
bzip2 linux.bin

mkimage -A arm -O linux -T kernel -C bzip2 -a 0x10c08000 -e 0x10c08000 -n "2.6.15 " -d linux.bin.bz2 uImage

************************************************************

Then I put kernel image at 0x10000000.

 

According to the README of u-boot 1.1.3 :

----------------------------------------------------------------------------------------

- Compression support:
  CONFIG_BZIP2

 

  If this option is set, support for bzip2 compressed
  images is included. If not, only uncompressed and gzip
  compressed images are supported.

 

  NOTE: the bzip2 algorithm requires a lot of RAM, so
  the malloc area (as defined by CFG_MALLOC_LEN) should
  be at least 4MB.

----------------------------------------------------------------------------------------

In /u-boot-1.1.3/include/configs/omap5912osk.h, if I use the original config :

#define CFG_MALLOC_LEN        (CFG_ENV_SIZE + 128*1024)

#define CONFIG_BZIP2            1

 

The result when u-boot decompress the image is :

************************************************************

## Booting image at 10000000 ...
   Image Name:   2.6.15 
   Image Type:   ARM Linux Kernel Image (bzip2 compressed)
   Data Size:    1159790 Bytes =  1.1 MB
   Load Address: 10c08000
   Entry Point:  10c08000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... BUNZIP2 ERROR -3 - must RESET board to recover

************************************************************

But I change the setting according to README :

#define CFG_MALLOC_LEN        (CFG_ENV_SIZE + 4224*1024)

#define CONFIG_BZIP2            1

The result when u-boot decompress the image is still fail:

************************************************************

## Booting image at 10000000 ...
   Image Name:   2.6.15 
   Image Type:   ARM Linux Kernel Image (bzip2 compressed)
   Data Size:    1159790 Bytes =  1.1 MB
   Load Address: 10c08000
   Entry Point:  10c08000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... data abort
pc : [<1108d098>]          lr : [<0008da5c>]
sp : 10c3f9c8  ip : 0000009d     fp : 000000a3
r10: e38771e7  r9 : 10c3f9cd     r8 : 10c3ffdc
r7 : 003c8633  r6 : 0000009d     r5 : 00037981  r4 : 00000001
r3 : e0b41de7  r2 : 10c6fca3     r1 : 000dbb8e  r0 : 10c601a8
Flags: Nzcv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...

************************************************************

 

Any one has any suggestion on how to solve this ?

Anything wrong in my modification ???

 

Thanks for your patience~

 

Best Regards,

Clare

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