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| author | Raja Das <rajadas2@in.ibm.com> | 2017-01-27 03:28:05 -0600 |
|---|---|---|
| committer | Daniel M. Crowell <dcrowell@us.ibm.com> | 2017-02-10 21:55:28 -0500 |
| commit | 68134ad6a5854365740bb0fd39b8b822d6eddae4 (patch) | |
| tree | b64fef56cd28c61b3f5c2d93962a0af600073e8a /src | |
| parent | 3e26f356fe1f5603f4bab9e42dfc4cb402ea0e94 (diff) | |
| download | talos-hostboot-68134ad6a5854365740bb0fd39b8b822d6eddae4.tar.gz talos-hostboot-68134ad6a5854365740bb0fd39b8b822d6eddae4.zip | |
Added Scom to de-assert EDRAM Charge Pumps in Power down sequence
Change-Id: I61c929efe02438418bab436d9332ffcb4233b001
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/35501
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
Reviewed-by: YUE DU <daviddu@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/35503
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.C | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.C b/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.C index e80da3503..da0e4e337 100644 --- a/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.C +++ b/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.C @@ -57,21 +57,38 @@ fapi2::ReturnCode p9_quad_power_off( const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_target) { fapi2::buffer<uint64_t> l_data64; + constexpr uint64_t l_rawData = 0x1100000000000000ULL; // Bit 3 & 7 are set to be manipulated + constexpr uint32_t MAX_CORE_PER_QUAD = 4; fapi2::ReturnCode rc = fapi2::FAPI2_RC_SUCCESS; + uint32_t l_cnt = 0; FAPI_INF("p9_quad_power_off: Entering..."); // Print chiplet position FAPI_INF("Quad power off chiplet no.%d", i_target.getChipletNumber()); + FAPI_DBG("Disabling bits 20/22/24/26 in EQ_QPPM_QPMMR_CLEAR, to gain access" + " to PFET controller, otherwise Quad Power off scom will fail"); l_data64.setBit<20>(); l_data64.setBit<22>(); l_data64.setBit<24>(); l_data64.setBit<26>(); + FAPI_TRY(fapi2::putScom(i_target, EQ_QPPM_QPMMR_CLEAR, l_data64)); + + // QPPM_QUAD_CTRL_REG + do + { + // EX0, Enables the EDRAM charge pumps in L3 EX0, on power down they + // must be de-asserted in the opposite order 3 -> 0 + // EX1, Enables the EDRAM charge pumps in L3 EX1, on power down they + // must be de-asserted in the opposite order 7 -> 4 + FAPI_DBG("De-asserting EDRAM charge pumps in Ex0 & Ex1 in Sequence for " + "Reg EQ_QPPM_QCCR_SCOM1, Data Value [0x%0X%0X]", + uint32_t((l_rawData << l_cnt) >> 32), uint32_t(l_rawData << l_cnt)); + FAPI_TRY(fapi2::putScom(i_target, EQ_QPPM_QCCR_SCOM1, (l_rawData << l_cnt))); + } + while(++l_cnt < MAX_CORE_PER_QUAD); - FAPI_TRY(fapi2::putScom(i_target, - EQ_QPPM_QPMMR_CLEAR, - l_data64)); // Call the procedure FAPI_EXEC_HWP(rc, p9_pm_pfet_control_eq, i_target, PM_PFET_TYPE_C::BOTH, PM_PFET_TYPE_C::OFF); |
