Dear All, > Dear Albert ARIBAUD, > > In message<4ce04585....@free.fr> you wrote: >> >> Currently start.S sets the stack twice, once before calling >> board_init_f, and once in relocate_code. Are you suggesting we remove >> the second sp setting? > > As relocation can move the stack to some completely different location > the SP has to be re-initialized (in this setup, after copying the > global data to their new location).
In the *most general* case stack and gd will have to be relocated to SDRAM, since the pre-relocation memory *could* be locked data cache or some buffer memory that is not free anymore when u-boot is up. Of course, on SoCs like AT91SAM9 where several (4k - 32k) of SRAM are available it would be tempting to keep stack and gd just in SRAM. But we don't want to specialize, we want to generalize... Best regards, Reinhard _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
