Jean-Christophe PLAGNIOL-VILLARD schreef:
No, thumb code is less efficient in terms of performance, but this single file needs thumb code. See LPC2292.
what is the Difference?
until a real big gap please do not use thumb
IAP entries need thumb code. This is not a problem, they are only used for programming the internal flash of the processor, so there is no performance penalty for normal operation.
Yes I do. They are straight from the LPC2292 code, so once they were considered OK. I checked out the the write{s,l,b} functions in asm/io.h, but although they look similar, for some reason they simply don't work. Given the similarities between the write{s,l,b} and the PUT* functions, what is the problem with those? Furthermore, the ARM architecture doesn't use any kind of special instructions for accessing registers, everything is memory mapped.
please use readx/writex
Thanks for the pointer, I'll look into those.
I do understand that you want the best code for U-boot, but I do not entirely agree on all points. Certainly when I look at the code already in place in U-boot.
I'm preparing a patch series to clean the arm720t to seprate it as arch and avoid this borring #ifdef
Can you explain what you mean here?
Kind regards,
Remco Poelstra