ATTN: Add hostboot debug regs during chkstop and TIs
Signed-off-by: Brian Stegmiller <steg2021@linux.vnet.ibm.com>
Change-Id: Ie4f35f169ce8ddefc48f7e47e1987fc12cfe8cd6
diff --git a/attn/attn_handler.cpp b/attn/attn_handler.cpp
index 1ed0ec8..6eef107 100644
--- a/attn/attn_handler.cpp
+++ b/attn/attn_handler.cpp
@@ -43,6 +43,18 @@
bool activeAttn(uint32_t i_val, uint32_t i_mask, uint32_t i_attn);
/**
+ * @brief Traces some regs for hostboot
+ *
+ * @param i_procIndex - processor number (used in traces)
+ * @param i_pibTarget - target used for doing SCOMs to the processor
+ * @param i_fsiTarget - target used for doing CFAMs to the processor
+ *
+ * @return nothing
+ */
+void addHbStatusRegs(uint32_t i_procIndex, pdbg_target* i_pibTarget,
+ pdbg_target* i_fsiTarget);
+
+/**
* @brief The main attention handler logic
*
* @param i_breakpoints true = breakpoint special attn handling enabled
@@ -149,6 +161,15 @@
handleVital, target,
i_config);
}
+ else
+ {
+ // Hostboot wants some debug regs on Checkstops/TIs.
+ // Don't bother on SBE Vitals (scoms will fail).
+ // Only need to do on primary proc if you know what
+ // it is, but eBMC may not so we will dump all
+ // procs.
+ addHbStatusRegs(proc, pibTarget, fsiTarget);
+ } // Not SBE Vital attention
// Checkstop attention active and not masked?
if (true ==
@@ -446,4 +467,79 @@
return rc;
}
+/**
+ * @brief Traces some regs for hostboot
+ *
+ * When we receive a Checkstop or special Attention Term Immediate,
+ * hostboot wants some regs added to the error log. We will do this
+ * by tracing them here and then the traces will get added to
+ * the error log later
+ *
+ * @param i_procIndex - processor number (used in traces)
+ * @param i_pibTarget - target used for doing SCOMs to the processor
+ * @param i_fsiTarget - target used for doing CFAMs to the processor
+ *
+ * @return nothing
+ */
+void addHbStatusRegs(uint32_t i_procIndex, pdbg_target* i_pibTarget,
+ pdbg_target* i_fsiTarget)
+{
+ uint32_t l_cfamData = 0xFFFFFFFF;
+ uint64_t l_scomData1 = 0xFFFFFFFFFFFFFFFFull;
+ uint64_t l_scomData2 = 0xFFFFFFFFFFFFFFFFull;
+ uint32_t l_cfamAddr = 0x283C;
+ uint64_t l_scomAddr1 = 0x4602F489;
+ uint64_t l_scomAddr2 = 0x4602F487;
+
+ // We only need this for PRIMARY proc, but will just do on all procs for
+ // now. All attentions handled are fatal (except for plain breakpoints). Not
+ // going to sweat the plain breakpoint case since this is lab only using
+ // cronus.
+
+ // get first debug reg (CFAM)
+ if (RC_SUCCESS != fsi_read(i_fsiTarget, l_cfamAddr, &l_cfamData))
+ {
+ l_cfamData = 0xFFFFFFFF;
+ }
+
+ // Get SCOM regs next (just 2 of them)
+ if (RC_SUCCESS != pib_read(i_pibTarget, l_scomAddr1, &l_scomData1))
+ {
+ l_scomData1 = 0xFFFFFFFFFFFFFFFFull;
+ }
+
+ if (RC_SUCCESS != pib_read(i_pibTarget, l_scomAddr2, &l_scomData2))
+ {
+ l_scomData2 = 0xFFFFFFFFFFFFFFFFull;
+ }
+
+ // Trace out the results here of all 3 regs
+ // (Format should resemble FSP: HostBoot Reg:0000283C Data:AA801504
+ // 00000000 Proc:00050001 )
+ std::stringstream ss1, ss2, ss3;
+
+ ss1 << "HostBoot Reg:" << std::setw(8) << std::setfill('0') << std::hex
+ << l_cfamAddr << " Data:" << l_cfamData << " Proc:" << std::setw(8)
+ << i_procIndex;
+
+ ss2 << "HostBoot Reg:" << std::setw(8) << std::setfill('0') << std::hex
+ << l_scomAddr1 << " Data:" << std::setw(16) << l_scomData1
+ << " Proc:" << std::setw(8) << i_procIndex;
+
+ ss3 << "HostBoot Reg:" << std::setw(8) << std::setfill('0') << std::hex
+ << l_scomAddr2 << " Data:" << std::setw(16) << l_scomData2
+ << " Proc:" << std::setw(8) << i_procIndex;
+
+ std::string strobj1 = ss1.str();
+ std::string strobj2 = ss2.str();
+ std::string strobj3 = ss3.str();
+
+ trace<level::INFO>(strobj1.c_str());
+ trace<level::INFO>(strobj2.c_str());
+ trace<level::INFO>(strobj3.c_str());
+
+ return;
+
+} // end addHbStatusRegs
+
} // namespace attn