[U-Boot-Users] ARM global data space

[Mark Lokowich]

Had problems with U-boot from ARM ELDK 4.0 on a PXA255 (Lubbock board)  
that seemed to be attributed to the declaration of global data.  This  
space is declared before the armboot_start (.text) and heap regions, then  
referenced with the DECLARE_GLOBAL_DATA_PTR macro.  The macro uses  
register R8, but seems to get corrupted (though I was unable to verify  
root cause of the problem).  Note that the CFG_MONITOR_BASE was not in the  
lubbock header file, so I defined it to CFG_FLASH_BASE.  I changed the  
global data pointer to that used in other architectures, where the pointer  
references the C declaration of global_data.  This fixed my problem, and  
U-Boot boots successfully.  Can anyone provide a hint/explanation about  
this problem?