On Mar 20, 2008, at 6:16 AM, Wolfgang Denk wrote: > In message <[EMAIL PROTECTED]> you wrote: >> >> I don't like this either. But I have not come up with a "generic" >> solution >> till now. It's not so easy since the 440EPx SDRAM setup code is >> sometimes >> common (cpu/ppc4xx/denali_spd_ddr2.c) and sometimes board specific. >> And it >> gets even more complicated when ECC initialization is needed too. So >> currently I have no "better" solution as to do it in a board >> specific way. >> >> As always, patches implementing a "better" more generic solution >> are welcome. > > At the cost of an #ifdef, this could be added to the memory > reservation code in "lib_ppc/board.c", i. e. somewhere after > > ... > 427 * Reserve memory at end of RAM for (top down in that > order): > 428 * - kernel log buffer > 429 * - protected RAM > 430 * - LCD framebuffer > 431 * - monitor code > 432 * - board info struct > 433 */ > 434 len = (ulong)&_end - CFG_MONITOR_BASE; > 435 > 436 addr = CFG_SDRAM_BASE + get_effective_memsize(); > > Of course you need to make sure that the linux kernel understands > this changed behaviour / shifted addresses, too.
I haven't looked at the exact details but with the new-image branch of u-boot-testing the introduction of using the lmb to keep track of memory regions used might make this a little easier. It clearly will not help in determining when to do a lmb_reserve(). - k ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
