diff options
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm')
3 files changed, 96 insertions, 98 deletions
diff --git a/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder.H b/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder.H index 98c3451f3..5db105e29 100644 --- a/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder.H +++ b/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder.H @@ -5,7 +5,7 @@ /* */ /* OpenPOWER HostBoot Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2016 */ +/* Contributors Listed Below - COPYRIGHT 2016,2017 */ /* [+] International Business Machines Corp. */ /* */ /* */ @@ -558,29 +558,6 @@ class decoder_v1_1 : public decoder_v1_0 /// @note Page 4.1.2.12.3 - 66 /// virtual fapi2::ReturnCode a_side_clk_output_driver(uint8_t& o_output) override; - - /// - /// @brief Decodes register output drive strength for data buffer control (BCOM, BODT, BKCE) - /// @param[out] o_output encoded drive strength - /// @return FAPI2_RC_SUCCESS if okay - /// @note SPD Byte 138 (Bit 4) - /// @note Item JEDEC Standard No. 21-C - /// @note DDR4 SPD Document Release 3 - /// @note Page 4.1.2.12.3 - 66 - /// - virtual fapi2::ReturnCode bcom_bcke_bodt_drive_strength(uint8_t& o_output) override; - - /// - /// @brief Decodes register output drive strength for data buffer control (BCK) - /// @param[out] o_output encoded drive strength - /// @return FAPI2_RC_SUCCESS if okay - /// @note SPD Byte 138 (Bit 5) - /// @note Item JEDEC Standard No. 21-C - /// @note DDR4 SPD Document Release 3 - /// @note Page 4.1.2.12.3 - 66 - /// - virtual fapi2::ReturnCode bck_output_drive_strength(uint8_t& o_output) override; - }; /// @@ -609,6 +586,28 @@ class decoder_v1_2 : public decoder_v1_1 virtual ~decoder_v1_2() = default; /// + /// @brief Decodes register output drive strength for data buffer control (BCOM, BODT, BKCE) + /// @param[out] o_output encoded drive strength + /// @return FAPI2_RC_SUCCESS if okay + /// @note SPD Byte 138 (Bit 4) + /// @note Item JEDEC Standard No. 21-C + /// @note DDR4 SPD Document Release 3 + /// @note Page 4.1.2.12.3 - 66 + /// + virtual fapi2::ReturnCode bcom_bcke_bodt_drive_strength(uint8_t& o_output) override; + + /// + /// @brief Decodes register output drive strength for data buffer control (BCK) + /// @param[out] o_output encoded drive strength + /// @return FAPI2_RC_SUCCESS if okay + /// @note SPD Byte 138 (Bit 5) + /// @note Item JEDEC Standard No. 21-C + /// @note DDR4 SPD Document Release 3 + /// @note Page 4.1.2.12.3 - 66 + /// + virtual fapi2::ReturnCode bck_output_drive_strength(uint8_t& o_output) override; + + /// /// @brief Decodes RCD output slew rate control /// @param[out] o_output encoded drive strength /// @return FAPI2_RC_SUCCESS if okay diff --git a/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_1.C b/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_1.C index dfe54bbe3..56451f234 100644 --- a/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_1.C +++ b/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_1.C @@ -5,7 +5,7 @@ /* */ /* OpenPOWER HostBoot Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2016 */ +/* Contributors Listed Below - COPYRIGHT 2016,2017 */ /* [+] International Business Machines Corp. */ /* */ /* */ @@ -268,76 +268,6 @@ fapi_try_exit: return fapi2::current_err; } -/// -/// @brief Decodes register output drive strength for data buffer control (BCOM, BODT, BKCE) -/// @param[out] o_output encoded drive strength -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 138 (Bit 4) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 3 -/// @note Page 4.1.2.12.3 - 66 -/// -fapi2::ReturnCode decoder_v1_1::bcom_bcke_bodt_drive_strength(uint8_t& o_output) -{ - // Extracting desired bits - uint8_t l_field_bits = extract_spd_field< BCOM_BODT_BCKE_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("Field Bits value: %d", l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VAL = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VAL, - BCOM_BODT_BCKE_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for data buffer control (BCOM, BODT, BCKE)") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for data buffer control (BCOM, BODT, BCKE): %d", - mss::c_str(iv_target), - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for data buffer control (BCK) -/// @param[out] o_output encoded drive strength -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 138 (Bit 5) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 3 -/// @note Page 4.1.2.12.3 - 66 -/// -fapi2::ReturnCode decoder_v1_1::bck_output_drive_strength(uint8_t& o_output) -{ - // Extracting desired bits - uint8_t l_field_bits = extract_spd_field< BCK_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("Field Bits value: %d", l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VAL = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VAL, - BCK_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for data buffer control (BCK)") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for data buffer control (BCK): %d", - mss::c_str(iv_target), - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - }// lrdimm }// spd }// mss diff --git a/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_2.C b/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_2.C index 5bf7d02ed..a76adbb91 100644 --- a/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_2.C +++ b/src/import/chips/p9/procedures/hwp/memory/lib/spd/lrdimm/lrdimm_decoder_v1_2.C @@ -5,7 +5,7 @@ /* */ /* OpenPOWER HostBoot Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2016 */ +/* Contributors Listed Below - COPYRIGHT 2016,2017 */ /* [+] International Business Machines Corp. */ /* */ /* */ @@ -56,6 +56,75 @@ namespace spd { namespace lrdimm { +/// +/// @brief Decodes register output drive strength for data buffer control (BCOM, BODT, BKCE) +/// @param[out] o_output encoded drive strength +/// @return FAPI2_RC_SUCCESS if okay +/// @note SPD Byte 138 (Bit 4) +/// @note Item JEDEC Standard No. 21-C +/// @note DDR4 SPD Document Release 4 +/// @note Page 4.1.2.12.3 - 76 +/// +fapi2::ReturnCode decoder_v1_2::bcom_bcke_bodt_drive_strength(uint8_t& o_output) +{ + // Extracting desired bits + uint8_t l_field_bits = extract_spd_field< BCOM_BODT_BCKE_DRIVE_STRENGTH >(iv_target, iv_spd_data); + FAPI_INF("Field Bits value: %d", l_field_bits); + + // This checks my extracting params returns a value within bound + constexpr size_t MAX_VALID_VAL = 1; + + FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, + l_field_bits <= MAX_VALID_VAL, + BCOM_BODT_BCKE_DRIVE_STRENGTH.iv_byte, + l_field_bits, + "Failed bounds check for Register Output Driver for data buffer control (BCOM, BODT, BCKE)") ); + + // Update output only if check passes + o_output = l_field_bits; + + FAPI_INF("%s. Register Output Driver for data buffer control (BCOM, BODT, BCKE): %d", + mss::c_str(iv_target), + o_output); + +fapi_try_exit: + return fapi2::current_err; +} + +/// +/// @brief Decodes register output drive strength for data buffer control (BCK) +/// @param[out] o_output encoded drive strength +/// @return FAPI2_RC_SUCCESS if okay +/// @note SPD Byte 138 (Bit 5) +/// @note Item JEDEC Standard No. 21-C +/// @note DDR4 SPD Document Release 4 +/// @note Page 4.1.2.12.3 - 76 +/// +fapi2::ReturnCode decoder_v1_2::bck_output_drive_strength(uint8_t& o_output) +{ + // Extracting desired bits + uint8_t l_field_bits = extract_spd_field< BCK_DRIVE_STRENGTH >(iv_target, iv_spd_data); + FAPI_INF("Field Bits value: %d", l_field_bits); + + // This checks my extracting params returns a value within bound + constexpr size_t MAX_VALID_VAL = 1; + + FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, + l_field_bits <= MAX_VALID_VAL, + BCK_DRIVE_STRENGTH.iv_byte, + l_field_bits, + "Failed bounds check for Register Output Driver for data buffer control (BCK)") ); + + // Update output only if check passes + o_output = l_field_bits; + + FAPI_INF("%s. Register Output Driver for data buffer control (BCK): %d", + mss::c_str(iv_target), + o_output); + +fapi_try_exit: + return fapi2::current_err; +} /// /// @brief Decodes RCD output slew rate control @@ -64,7 +133,7 @@ namespace lrdimm /// @note SPD Byte 138 (Bit 6) /// @note Item JEDEC Standard No. 21-C /// @note DDR4 SPD Document Release 4 -/// @note Page 4.1.2.L-4 - 70 +/// @note Page 4.1.2.L-4 - 76 /// fapi2::ReturnCode decoder_v1_2::slew_rate_control(uint8_t& o_output) { @@ -73,7 +142,7 @@ fapi2::ReturnCode decoder_v1_2::slew_rate_control(uint8_t& o_output) FAPI_INF("Field Bits value: %d", l_field_bits); // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VAL = 0b1111; + constexpr size_t MAX_VALID_VAL = 0b1; FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, l_field_bits <= MAX_VALID_VAL, // extract sanity check |
