[U-Boot-Users] why can not make u-boot.bin smaller via cutting u-boot command?

[U-Boot-Users] why can not make u-boot.bin smaller via cutting u-boot command?

[sun]

hi,all:
      I compiled u-boot for marvell db88f5181 board,and u-boot.bin is 449kb,it too big for porting.   
      I want to cut u-boot,but after i cut some u-boot commands via cutting *.o files under u-boot*/common/Makefile, then make u-boot, but u-boot.bin size still be 449kb? why?
   
     What's the best way to cut u-boot?

       
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[U-Boot-Users] why can not make u-boot.bin smaller via cutting u-boot command?

[Jean-Christophe PLAGNIOL-VILLARD]

sun a ?crit :
> hi,all:
>     I compiled u-boot for marvell db88f5181 board,and u-boot.bin is 
> 449kb,it too big for porting.  
>     I want to cut u-boot,but after i cut some u-boot commands via 
> cutting *.o files under u-boot*/common/Makefile, then make u-boot, but 
> u-boot.bin size still be 449kb? why?
>  
>    What's the best way to cut u-boot?

Hi,
	The active command is defined in include/configs/db88f5181.h
	by some #define CONFIG_CMD_* and in 
	include/config_cmd_default.h .
	See althrough if you not build your u-boot with debug support.

Best Regards,

Jea-Christophe PLAGNIOL-VILLARD

[U-Boot-Users] why can not make u-boot.bin smaller via cutting u-boot command?

[Kelsey Dawes]

On Wed, Oct 10, 2007 at 11:37:27AM +0800, sun wrote:
> hi,all:
>       I compiled u-boot for marvell db88f5181 board,and u-boot.bin is 449kb,it too big for porting.   
>       I want to cut u-boot,but after i cut some u-boot commands via cutting *.o files under u-boot*/common/Makefile, then make u-boot, but u-boot.bin size still be 449kb? why?
>    
>      What's the best way to cut u-boot?
>

Hi,
in our board config header file, we have defined CFG_MONITOR_LEN - which ends up being the final size of the u-boot.bin file.

From the README : 

CFG_MONITOR_LEN:
		Size of memory reserved for monitor code, used to
		determine _at_compile_time_ (!) if the environment is
		embedded within the U-Boot image, or in a separate
		flash sector.

-Kelsey

[U-Boot-Users] why can not make u-boot.bin smaller via cutting u-boot command?

[Yotam Admon]

> sun a ?crit :
> > hi,all:
> >     I compiled u-boot for marvell db88f5181 board,and u-boot.bin is
> > 449kb,it too big for porting.
> >     I want to cut u-boot,but after i cut some u-boot commands via
> > cutting *.o files under u-boot*/common/Makefile, then make u-boot, but
> > u-boot.bin size still be 449kb? why?
> >
> >    What's the best way to cut u-boot?
> 
> Hi,
> 	The active command is defined in include/configs/db88f5181.h
> 	by some #define CONFIG_CMD_* and in
> 	include/config_cmd_default.h .
> 	See althrough if you not build your u-boot with debug support.
> 
> Best Regards,
> 
> Jea-Christophe PLAGNIOL-VILLARD
Hi,
Can you state the Marvell patch version for the U-boot?
In Marvell release the linker script is setting the bin file size to be ~450kbyte.
Removing commands will not do any effect before changing the linker script.
Thanks,
Yotam

[U-Boot-Users] why can not make u-boot.bin smaller via cutting u-boot command?

[Jerry Van Baren]

sun wrote:
> hi,all:
>     I compiled u-boot for marvell db88f5181 board,and u-boot.bin is 
> 449kb,it too big for porting.  
>     I want to cut u-boot,but after i cut some u-boot commands via 
> cutting *.o files under u-boot*/common/Makefile, then make u-boot, but 
> u-boot.bin size still be 449kb? why?
>  
>    What's the best way to cut u-boot?

If you want to cut out commands, you need to edit the u-boot
configuration file.  See the README file around line 549.
<http://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=blob;f=README;h=09eb76fe4528dfedca027b119ac760fce2570e35;hb=HEAD#l549>

Deleting .o files isn't going to be successful because make will simply
rebuild them.

gvb