Help; I'm trying to figure out if these errors are hardware or software. And of course, this is our first ppc/uboot system, so I'm still stepping through a lot of learning as I go.
I'm supposed to have a memory region from 0 to 7fff_ffff assigned to our 128MB memory. However, I run into several issues when trying to run mtest. I end up with an large sections mis-behaving. I don't see any conflicts in the BRx registers, and I believe my OR1 is set up properly, so I'm not sure how to proceed.
good: #> md 0x00100000 1; mw 0x00100000 0xfff0000f ; md 0x00100000 1; 00100000: ffffffff .... 00100000: fff0000f ....
bad: #> md 0x00b8ac98 1; mw 0x00b8ac98 0xffff0000 ; md 0x00b8ac98 1; 00b8ac98: 61633938 ac98 00b8ac98: 61633938 ac98 #> md 0x00b8ac98 1; mw 0x00b8ac98 0x0000ffff ; md 0x00b8ac98 1; 00b8ac98: 61633938 ac98 00b8ac98: 61633938 ac98 #> md 0x00b8ac98 1; mw 0x00b8ac98 0xff0000ff ; md 0x00b8ac98 1; 00b8ac98: 61633938 ac98 00b8ac98: 61633938 ac98
System: mpc8248 - custom board based on ep8248e 128 MB RAM; 128 MB Flash; 128 MB Flash #> memcinfo BR0 = f8001801 OR0 = f80018c2 BR1 = 00001841 OR1 = f8002b00 BR2 = f4000801 OR2 = fff018c4 BR3 = 00000000 OR3 = 00000000 BR4 = e8001801 OR4 = f80018c2 BR5 = f4100801 OR5 = fff00864 BR6 = f4200801 OR6 = fff00864 BR7 = 00000000 OR7 = 00000000 BR8 = 00000000 OR8 = 00000000 BR9 = 00000000 OR9 = 00000000 BR10 = 00000000 OR10 = 00000000 BR11 = 00000000 OR11 = 00000000 MAR = adf32865 MAMR = 00000000 MBMR = 00000000 MCMR = 00000000 MPTPR = 1300 MDR = 1d005815 PSDMR = c2672522 LSDMR = 00000000 PURT = 21 PSRT = 4b LURT = 12 LSRT = a9 IMMR = f0000c10