Dear Lei Wen, In message <aanlkti==rkiysgnfyiy2no_w4usw=da8stzjcht14...@mail.gmail.com> you wrote: > > But it let the uboot lose a good feature that let it boot itself to > debug a new feature.
This has never been supported, and never been working reliably, not across acrchitectures, and not on all ARM systems. > In original scheme, the relocate operation is done before calling the > init_sequence, > so the problem here was gone. No. Before, There was no relocation done at all, because U-Boot was linked to a fixed RAM address, and was simply copied there. You ware just lucky when you were able to start U-Boot from an already running system. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de Q: Why do PCs have a reset button on the front? A: Because they are expected to run Microsoft operating systems. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot