Re: [PATCH] remove duplicated code from linux.inc

[Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>]

Dnia piątek, 31 lipca 2009 o 14:35:19 Graham Gower napisał(a):
> And for those playing at home, the value to assign to UBOOT_ENTRYSYM
> for a given arch can be found by grepping
> linux/arch/${ARCH}/kernel/vmlinux.lds.S for 'ENTRY'.

So according to your post for ARM it will be 'stext':

15:10 hrw@home:linux-2.6.30$ grep ^ENTRY arch/arm/kernel/vmlinux.lds.S
ENTRY(stext)

For AT91SAM9263-EK we get:

15:10 hrw@home:linux-2.6.30$ arm-angstrom-linux-gnueabi-nm vmlinux|grep 
stext
c0008000 T _stext
c0008000 T stext

But when I boot this device I have:

## Booting kernel from Legacy Image at 22200000 ...                                                                                                        
   Image Name:   Angstrom/2.6.30/at91sam9263ek                                                                                                             
   Image Type:   ARM Linux Kernel Image (uncompressed)                                                                                                     
   Data Size:    2074384 Bytes =  2 MB                                                                                                                     
   Load Address: 20008000                                                                                                                                  
   Entry Point:  20008000                                                                                                                                  
   Verifying Checksum ... OK                                                                                                                               
   Loading Kernel Image ... OK                                                                                                                             

So entry point is different.

For NHK15 which runs kernel 2.6.20 I got "stext" same as Entry point 
used by U-Boot:

15:12 hrw@home:linux-2.6.20$ arm-angstrom-linux-gnueabi-nm vmlinux|grep 
stext
c0008000 T _stext
c02bcba0 t snstext
c0008000 T stext

## Booting image at 00100000 ...
   Image Name:   Linux-2.6.20   
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1714260 Bytes =  1.6 MB              
   Load Address: 00008000                             
   Entry Point:  00008000                             
OK          

For BUG which runs 2.6.27.2 I got:

15:16 hrw@home:bug-linux-2.6.27.2$ arm-angstrom-linux-gnueabi-nm 
vmlinux|grep stext
c0008000 T _stext
c0008000 T stext

When U-Boot says:

## Booting kernel from Legacy Image at 80800000 ...
   Image Name:   Linux-2.6.27.2
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1722736 Bytes =  1.6 MB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK

I also have avr32 NGW100 but lack kernel tree for it to check values. 
Can test will those devices boot with entry point set to 0x00080000 
address.

Regards, 
-- 
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