Hello,
my mpc8572ds (2x 512 MiB ram) had initially u-boot 1.3.0-rc2 and I haven't notice any problems. Today I updated u-boot to v2009.03 because I was not able to boot current vanilla linux kernel in smp mode. Since then I experience random kernel opses. I thing it has something to do with memory setup. The settings in the ddr controller changed from (v1.3.0-rc2): - ddr->sdram_mode 0x00400a62; - ddr->sdram_data_init = 0x00000000; - ddr->sdram_cfg_2 = 0x04401000;
to (v2009.03): - ddr->sdram_mode 0x00440a62 - ddr->sdram_data_init 0xdeadbeef - ddr->sdram_cfg_2 0x24401000
I cherry-picked commit 6a819783 aka "fsl-ddr: Fix two bugs in the ddr infrastructure" but nothing improved.
Now I've picked v1.3.0-rc2 and linux v2.6.29. With that combination everything seems to work however I experience sometimes ICE while compiling. If I continue to compile from that point there is no ICE anymore so it does not look like a gcc bug to me.
Any suggestions? Someone with similar problems?
Sebastian