Dear Ronny D, In message <875745.66478...@web46116.mail.sp1.yahoo.com> you wrote: > > I am working on PPC440 based customized board having 4MB context ram. > > what are all changes need to perform to skip relocation of u-boot in DDR > and relocated it to context ram and run from the same location.
first: why would you want to do that? Which advantages do you expect compared to running from DDR? It might be sufficient to change the initialization of "addr" in board_init_f() in "lib_ppc/board.c"; instead of basing it on "CONFIG_SYS_SDRAM_BASE + get_effective_memsize()" set it to the end address of your contaxt RAM (+1). Be careful about the relocation of the exception vectors, though. These probably still need to be relocated to 0. I don't know which other obstacles might be on that way - U-Boot's memory map on Power silently assumes that it has contiguous memory from 0 through the current image address. Also, 4 MB might not be sufficient for example to hold the malloc arena if you want to uncompress bigger bz2 compressed images, and so on. All in all I expect some effort especially for debugging, and little or no benefit. 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 "There is no distinctly American criminal class except Congress." - Mark Twain _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot