hi all, I am a newbie about u-boot , who have a good journal ? thanks very much ! ----- 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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