Dear Albert ARIBAUD,
In message 4CF743E6.60706@free.fr you wrote:
Starting with the fact that the linker issue is only for one board, omap3_evm, I looked up the board-specific code. First thing that I noticed was
static u8 omap3_evm_version;
I changed this to
static u8 omap3_evm_version = 1;
so that the static was moved out of BSS and the linker warning disappeared (reminder: v2010.12-rc2, omap3_evm, arm-2010q1).
Now this is not the first static BSS variable we use in U-Boot, and the others did not cause linker warnings (not *all* the others, at least), so the real cause is yet unknown to me. But that's at least a lead we can follow.
Write access is only in omap3_evm_get_revision() which in turn only gets called in misc_init_r(), i. e. after relocation.
Read access is only in get_omap3_evm_rev() [which is not called outside this file and thus should be made static!] which gets called only in omap3_evm_need_extvbus() which gets acalled only in musb_platform_init(), i. e. during USB init.
This should be safe.
You could try out what happens if you make get_omap3_evm_rev() static...
Best regards,
Wolfgang Denk