diff options
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/accessors')
-rwxr-xr-x | src/import/chips/p9/procedures/hwp/accessors/ddimm_get_efd.C | 60 |
1 files changed, 40 insertions, 20 deletions
diff --git a/src/import/chips/p9/procedures/hwp/accessors/ddimm_get_efd.C b/src/import/chips/p9/procedures/hwp/accessors/ddimm_get_efd.C index d1877bf28..00ed2b7d3 100755 --- a/src/import/chips/p9/procedures/hwp/accessors/ddimm_get_efd.C +++ b/src/import/chips/p9/procedures/hwp/accessors/ddimm_get_efd.C @@ -158,7 +158,9 @@ const uint16_t SPD_DDR4_DMB_MFG_ID_IBM = 0xA480; // SPD - DDR4 expected value for the DMB revision. // Currently at initial revision - revision 0 // size is 1 byte -const uint8_t SPD_DDR4_EXPECTED_DMB_REVISION_MICROCHIP = 0x00; +const uint8_t SPD_DDR4_EXPECTED_DMB_REVISION_0_MICROCHIP = 0x00; +const uint8_t SPD_DDR4_EXPECTED_DMB_REVISION_A0_MICROCHIP = 0xA0; +const uint8_t SPD_DDR4_EXPECTED_DMB_REVISION_A1_MICROCHIP = 0xA1; const uint8_t SPD_DDR4_EXPECTED_DMB_REVISION_IBM = 0x00; // Maximum number of FFDC elements we will save off @@ -217,12 +219,31 @@ bool check_valid_mfg_id(const uint16_t i_mfg_id) /// @brief Gets the expected DMB revision of a particular MFG ID /// /// @param[in] i_mfg_id MFG ID +/// @param[in] i_dmb_revision DMB revision /// @return expected DMB revision for ID /// -uint16_t get_expected_dmb_revision(const uint16_t i_mfg_id) +uint16_t check_valid_dmb_revision(const uint16_t i_mfg_id, const uint16_t i_dmb_revision) { - return (i_mfg_id == SPD_DDR4_DMB_MFG_ID_IBM) ? - SPD_DDR4_EXPECTED_DMB_REVISION_IBM : SPD_DDR4_EXPECTED_DMB_REVISION_MICROCHIP; + if (i_mfg_id == SPD_DDR4_DMB_MFG_ID_IBM) + { + FAPI_DBG("ddr4_get_efd: SPD DMB revision = 0x%.2X, expected DMB revision = 0x%.2X", + i_dmb_revision, SPD_DDR4_EXPECTED_DMB_REVISION_IBM); + + return (i_dmb_revision == SPD_DDR4_EXPECTED_DMB_REVISION_IBM); + } + else // == SPD_DDR4_EXPECTED_DMB_REVISION_MICROCHIP + { + // We asserted earlier that we are either MCHP or IBM mfg ID + FAPI_DBG("ddr4_get_efd: SPD DMB revision = 0x%.2X, expected DMB revision = 0x%.2X or 0x%.2X or 0x%.2X", + i_dmb_revision, + SPD_DDR4_EXPECTED_DMB_REVISION_0_MICROCHIP, + SPD_DDR4_EXPECTED_DMB_REVISION_A0_MICROCHIP, + SPD_DDR4_EXPECTED_DMB_REVISION_A1_MICROCHIP); + + return ((i_dmb_revision == SPD_DDR4_EXPECTED_DMB_REVISION_0_MICROCHIP) || + (i_dmb_revision == SPD_DDR4_EXPECTED_DMB_REVISION_A0_MICROCHIP) || + (i_dmb_revision == SPD_DDR4_EXPECTED_DMB_REVISION_A1_MICROCHIP)); + } } /// Local utilities @@ -438,7 +459,7 @@ extern "C" uint16_t l_efdCount{0}; // The number of EFDs size_t l_efdSize{0}; // The size of an EFD, not EFD meta data uint16_t l_dmbMfgId{0}; // The DMB manufacture ID - uint16_t l_expected_revision{0};// Expected revision of MFG + uint16_t l_dmb_revision{0}; uint16_t l_freqMask{0}; // The frequency mask as found in EFD uint8_t l_rankMask{0}; // The rank mask as found in EFD size_t ii{0}; // A loop index @@ -649,31 +670,30 @@ extern "C" FAPI_DBG ( "ddr4_get_efd: SPD DMB manufacturer ID = 0x%.4X", io_vpdInfo.iv_dmb_mfg_id); - l_expected_revision = get_expected_dmb_revision(l_dmbMfgId); - - FAPI_DBG ( "ddr4_get_efd: SPD DMB revision = 0x%.2X, " - "expected DMB revision = 0x%.2X", - i_spdBuffer[SPD_DMB_REVISION_ADDR], - l_expected_revision ); + l_dmb_revision = *reinterpret_cast<const uint16_t*>(&i_spdBuffer[SPD_DMB_REVISION_ADDR]); + // Swap endianess to host format. + l_dmb_revision = le16toh(l_dmb_revision); // Confirm that the DMB revision is what is expected - FAPI_ASSERT( (l_expected_revision == - i_spdBuffer[SPD_DMB_REVISION_ADDR]), + FAPI_ASSERT( check_valid_dmb_revision(l_dmbMfgId, l_dmb_revision), fapi2::DDIMM_GET_EFD_UNSUPPORTED_DMB_REVISION(). set_DMB_REVISION(static_cast<uint32_t> - (i_spdBuffer[SPD_DMB_REVISION_ADDR])). - set_EXPECTED(l_expected_revision). + (l_dmb_revision)). set_OCMB_CHIP_TARGET(i_ocmbFapi2Target). set_VPD_TYPE(io_vpdInfo.iv_vpd_type). set_DDR_TYPE(static_cast<uint32_t> (i_spdBuffer[SPD_MEM_TYPE_ADDR])), - "ddr4_get_efd: SPD DMB revision 0x%.2X is not the expected " - "revision 0x%.2X", - i_spdBuffer[SPD_DMB_REVISION_ADDR], - l_expected_revision); + "ddr4_get_efd: SPD DMB revision 0x%.2X is not an expected revision: " + "IBM expected: 0x%.2X " + "MCHP expected: 0x%.2X or 0x%.2X or 0x%.2X", + l_dmb_revision, + SPD_DDR4_EXPECTED_DMB_REVISION_IBM, + SPD_DDR4_EXPECTED_DMB_REVISION_0_MICROCHIP, + SPD_DDR4_EXPECTED_DMB_REVISION_A0_MICROCHIP, + SPD_DDR4_EXPECTED_DMB_REVISION_A1_MICROCHIP); // Set the outgoing DMB revision - io_vpdInfo.iv_dmb_revision = i_spdBuffer[SPD_DMB_REVISION_ADDR]; + io_vpdInfo.iv_dmb_revision = l_dmb_revision; FAPI_DBG ( "ddr4_get_efd: SPD DMB revision = 0x%.2X", io_vpdInfo.iv_dmb_revision); |