<html><body><p><tt><font size="2">Hi Alexandre,</font></tt><br><br><tt><font size="2">I'm suspecting not so much of a reset... but that the skiboot code is </font></tt><br><tt><font size="2">targeting the wrong unit within the chip. Hostboot has a feature </font></tt><br><tt><font size="2">on scom addresses that do translation based on which target you are </font></tt><br><tt><font size="2">attempting to access. The raw skiboot access will only return the </font></tt><br><tt><font size="2">zero'th unit (skiboot expects the user to do the scom translation).</font></tt><br><br><tt><font size="2">> > [ 51.504955724,5] CHIP: Chip ID 0000 type: P9N<br>> > DD2.2^M<br>> > [ 51.504992069,3] UPMEM: __xscom_read: gcid, read address gcid:0x0<br>> > 0x0x603fc38085050</font></tt><br><br><tt><font size="2">This is socket 0 (base Xscom address of 0x603fc00000000) and the scom address</font></tt><br><tt><font size="2">is </font></tt><tt><font size="2">0x7010A0A (0x38085050>>3)</font></tt><br><br><tt><font size="2">> > 51.72614|FAPI|call_host_start_payload.C: UPMEM: 0x7010a0a value is :<br>> > *0x8890a23810800000*^M<br>> > 51.72616|FAPI|call_host_start_payload.C: UPMEM:* PIR: 0x80d*^M<br></font></tt><br><tt><font size="2">I'm guessing this is not on the zero'th instance of the memory controller</font></tt><br><tt><font size="2">in the chip (there are 8 per socket). Can you also print out the HUID </font></tt><br><tt><font size="2">to be sure (TARGETING::get_huid(i_target))?</font></tt><br><br><tt><font size="2">The addresses of the 8 memory controllers in the chip are:</font></tt><br><tt><font size="2">07010A0A</font></tt><br><tt><font size="2">07010A4A</font></tt><br><tt><font size="2">07010A8A</font></tt><br><tt><font size="2">07010ACA</font></tt><br><tt><font size="2">08010A0A</font></tt><br><tt><font size="2">08010A4A</font></tt><br><tt><font size="2">08010A8A</font></tt><br><tt><font size="2">08010ACA</font></tt><br><br><br><tt><font size="2">Please let me know if this doesn't help, and I'll dig into the code</font></tt><br><tt><font size="2">further.</font></tt><br><br><br><font size="2">Dean Sanner<br>Dept. DIH, IBM Rochester, MN<br>(507) 253-7523 t/l 553-7523<br>dsanner@us.ibm.com<br></font><br><BR>
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