Dear Lasse Skov, please keep the list on Cc:
In message <[email protected]> you wrote: > > I had now fixed some settings on the DDR2 timing, found something with the > ODT and other timing specific for the timing_cfg register. Will you *please* keep your line length below some 70 charactes or so? Thanks. > And included some sync for the cache, but here im not quite sure on that this > is correct. > > I had also let my board test the all the address range for my ram from > 0x0x20000000 (512MB) > With the following code. > > int testdram(void) > { > uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START; > uint *pend = (uint *) CONFIG_SYS_MEMTEST_END; > uint *p; > printf("Testing DRAM from 0x%08x to 0x%08x\n", > CONFIG_SYS_MEMTEST_START, > CONFIG_SYS_MEMTEST_END); > > printf("DRAM test phase 1:\n"); > for (p = pstart; p < pend; p++) > *p = (uint)p%8?0x5A5A5A5A:0xA5A5A5A5; > > for (p = pstart; p < pend; p++) { > if (*p != ((uint)p%8?0x5A5A5A5A:0xA5A5A5A5)) { > printf("DRAM test fails at: %08x\n", (uint) p); > return 1; > } > } > printf("DRAM test phase 2:\n"); > for (p = pstart; p < pend; p++) > *p = (uint)p%8?0xA5A5A5A5:0x5A5A5A5A; > for (p = pstart; p < pend; p++) { > if (*p != ((uint)p%8?0xA5A5A5A5:0xA5A5A5A5A)) { > printf("DRAM test fails at: %08x\n", (uint) p); > return 1; > } > } > printf("DRAM test passed.\n"); > return 0; > } > > Just some testcode i found and modified it a little bit. But the thing is > that this completes with succes. This is a really braindead test. And like almost all memory tests it will only exercise simple read and write accesses on the bus - it cannot test burst mode accesses. Please see the FAQ: http://www.denx.de/wiki/view/DULG/UBootCrashAfterRelocation > I know that this is only running from flash and takes a lot of time to test > the 512Mb. > > So because this is only running from Flash, I cannot be sure on that my SDRAM > configurations is correct? > Or is this not a right conclusion? Let's rephrase this: you can be pretty sure that your SDRAM initialization is _not_ correct. 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: [email protected] A mouse is an elephant built by the Japanese. _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
