[U-Boot] newbie questions regarding some config options.
Chris
ece4afe at yahoo.com
Fri Aug 22 05:49:27 CEST 2014
Wolfgang Denk <wd <at> denx.de> writes:
>
> Dear PHIL.EDWORTHY <at> renesas.com,
>
> In message <OF460D0558.A844A780-ONC12578AE.0047905C-802578AE.00482EFA <at>
eu.necel.com> you wrote:
> >
> >
> > U-boot is typically stored in flash and one of the first things it
> > does when executed is relocate to ram. CONFIG_SYS_TEXT_BASE is the
> > relocation address. Typically, u-boot global data, heap and then
>
> This is completely wrong. The relocation address is determined
> dynamically, depending on RAM size and a number of coinfigured
> options.
>
> CONFIG_SYS_TEXT_BASE is the start address of the text segment when
> execution starts - on ROM booting systems this is an address in ROM.
>
> > I am sure more experienced u-boot developers will correct me if I am
wrong :)
>
> Indeed this was necessary.
>
> Best regards,
>
> Wolfgang Denk
>
Hello Wolfgang,
is it safe to say that this is the base address of the flash memory, the
CONFIG_SYS_TEXT_BASE? Of course if I boot from flash..
Say if my flash is in 0x10000000 for NCS0 of at91rm9200 as an example,
CONFIG_SYS_TEXT_BASE = 0x10000000?
Thanks
Chris
More information about the U-Boot
mailing list