2015-12-14 23:44:26 +01:00
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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2018-01-02 05:13:40 +01:00
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#include <arch/io.h>
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#include <device/pci_ids.h>
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2018-04-18 10:11:59 +02:00
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#include <device/pci_ops.h>
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2016-08-23 11:01:23 +02:00
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#include <fsp/api.h>
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#include <soc/ramstage.h>
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2015-12-14 23:44:26 +01:00
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#include <soc/vr_config.h>
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2018-01-02 05:13:40 +01:00
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#define KBLY_ICCMAX_SA VR_CFG_AMP(4.1)
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#define KBLY_ICCMAX_CORE VR_CFG_AMP(24)
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#define KBLY_ICCMAX_GTS_GTUS VR_CFG_AMP(24)
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#define KBLR_ICCMAX_SA_U42 VR_CFG_AMP(6)
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#define KBLU_ICCMAX_SA_U22 VR_CFG_AMP(4.5)
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#define KBLR_ICCMAX_CORE_U42 VR_CFG_AMP(64)
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#define KBLU_ICCMAX_CORE_U22_PREMIUM VR_CFG_AMP(32)
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#define KBLU_ICCMAX_CORE_U22_BASE VR_CFG_AMP(29)
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#define KBLUR_ICCMAX_GTS_GTUS VR_CFG_AMP(31)
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enum kbl_sku {
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KBL_Y_SKU,
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KBL_R_SKU,
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KBL_U_BASE_SKU,
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KBL_U_PREMIUM_SKU,
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};
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/*
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* Iccmax table from Doc #559100 Section 7.2 DC Specifications, the
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* Iccmax is the same among KBL-Y but KBL-U/R.
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* +----------------+-------------+---------------+------+-----+
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* | Domain/Setting | SA | IA | GTUS | GTS |
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* +----------------+-------------+---------------+------+-----+
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* | IccMax(KBL-U/R)| 6A(U42) | 64A(U42) | 31A | 31A |
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* | | 4.5A(Others)| 29A(P/C) | | |
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* | | | 32A(i3/i5) | | |
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* +----------------+-------------+---------------+------+-----+
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* | IccMax(KBL-Y) | 4.1A | 24A | 24A | 24A |
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* +----------------+-------------+---------------+------+-----+
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*/
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static const struct {
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enum kbl_sku sku;
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uint16_t icc_max[NUM_VR_DOMAINS];
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}sku_icc_max_mapping[] = {
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[KBL_Y_SKU] = {
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.sku = KBL_Y_SKU,
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.icc_max = {
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KBLY_ICCMAX_SA,
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KBLY_ICCMAX_CORE,
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KBLY_ICCMAX_GTS_GTUS,
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KBLY_ICCMAX_GTS_GTUS
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}
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},
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[KBL_R_SKU] = {
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.sku = KBL_R_SKU,
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.icc_max = {
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KBLR_ICCMAX_SA_U42,
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KBLR_ICCMAX_CORE_U42,
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KBLUR_ICCMAX_GTS_GTUS,
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KBLUR_ICCMAX_GTS_GTUS
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}
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},
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[KBL_U_BASE_SKU] = {
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.sku = KBL_U_BASE_SKU,
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.icc_max = {
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KBLU_ICCMAX_SA_U22,
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KBLU_ICCMAX_CORE_U22_BASE,
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KBLUR_ICCMAX_GTS_GTUS,
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KBLUR_ICCMAX_GTS_GTUS
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}
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},
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[KBL_U_PREMIUM_SKU] = {
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.sku = KBL_U_PREMIUM_SKU,
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.icc_max = {
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KBLU_ICCMAX_SA_U22,
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KBLU_ICCMAX_CORE_U22_PREMIUM,
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KBLUR_ICCMAX_GTS_GTUS,
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KBLUR_ICCMAX_GTS_GTUS
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}
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},
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};
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2015-12-14 23:44:26 +01:00
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/* Default values for domain configuration. PSI3 and PSI4 are disabled. */
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static const struct vr_config default_configs[NUM_VR_DOMAINS] = {
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[VR_SYSTEM_AGENT] = {
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.vr_config_enable = 1,
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.psi1threshold = VR_CFG_AMP(20),
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.psi2threshold = VR_CFG_AMP(4),
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.psi3threshold = VR_CFG_AMP(1),
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.psi3enable = 0,
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.psi4enable = 0,
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.icc_max = VR_CFG_AMP(7),
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.voltage_limit = 1520,
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},
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[VR_IA_CORE] = {
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.vr_config_enable = 1,
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.psi1threshold = VR_CFG_AMP(20),
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.psi2threshold = VR_CFG_AMP(5),
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.psi3threshold = VR_CFG_AMP(1),
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.psi3enable = 0,
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.psi4enable = 0,
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.icc_max = VR_CFG_AMP(34),
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.voltage_limit = 1520,
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},
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2017-03-15 00:37:55 +01:00
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#if IS_ENABLED(CONFIG_PLATFORM_USES_FSP1_1)
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2015-12-14 23:44:26 +01:00
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[VR_RING] = {
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.vr_config_enable = 1,
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.psi1threshold = VR_CFG_AMP(20),
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.psi2threshold = VR_CFG_AMP(5),
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.psi3threshold = VR_CFG_AMP(1),
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.psi3enable = 0,
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.psi4enable = 0,
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.icc_max = VR_CFG_AMP(34),
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.voltage_limit = 1520,
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},
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2017-03-15 00:37:55 +01:00
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#endif
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2015-12-14 23:44:26 +01:00
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[VR_GT_UNSLICED] = {
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.vr_config_enable = 1,
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.psi1threshold = VR_CFG_AMP(20),
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.psi2threshold = VR_CFG_AMP(5),
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.psi3threshold = VR_CFG_AMP(1),
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.psi3enable = 0,
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.psi4enable = 0,
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.icc_max = VR_CFG_AMP(35),
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.voltage_limit = 1520,
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},
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[VR_GT_SLICED] = {
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.vr_config_enable = 1,
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.psi1threshold = VR_CFG_AMP(20),
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.psi2threshold = VR_CFG_AMP(5),
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.psi3threshold = VR_CFG_AMP(1),
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.psi3enable = 0,
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.psi4enable = 0,
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.icc_max = VR_CFG_AMP(35),
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.voltage_limit = 1520,
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},
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};
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2018-01-02 05:13:40 +01:00
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static uint16_t get_dev_id(device_t dev)
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{
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return pci_read_config16(dev, PCI_DEVICE_ID);
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}
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static int get_kbl_sku(void)
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{
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static int sku = -1;
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uint16_t id;
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if (sku != -1)
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return sku;
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id = get_dev_id(SA_DEV_ROOT);
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if (id == PCI_DEVICE_ID_INTEL_KBL_U_R)
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sku = KBL_R_SKU;
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else if (id == PCI_DEVICE_ID_INTEL_KBL_ID_Y)
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sku = KBL_Y_SKU;
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else if (id == PCI_DEVICE_ID_INTEL_KBL_ID_U) {
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id = get_dev_id(PCH_DEV_LPC);
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if (id == PCI_DEVICE_ID_INTEL_SPT_LP_U_BASE_HDCP22)
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sku = KBL_U_BASE_SKU;
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else
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sku = KBL_U_PREMIUM_SKU;
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} else
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/* Not one of the skus with available Icc max mapping. */
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sku = -2;
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return sku;
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}
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static uint16_t get_sku_icc_max(int domain, uint16_t board_icc_max)
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{
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/* If board provided non-zero value, use it. */
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if (board_icc_max)
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return board_icc_max;
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/* Check if this SKU has a mapping table entry. */
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int sku_id = get_kbl_sku();
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if (sku_id < 0)
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return 0;
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return sku_icc_max_mapping[sku_id].icc_max[domain];
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}
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2016-08-23 11:01:23 +02:00
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void fill_vr_domain_config(void *params,
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int domain, const struct vr_config *chip_cfg)
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2015-12-14 23:44:26 +01:00
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{
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2016-08-23 11:01:23 +02:00
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FSP_SIL_UPD *vr_params = (FSP_SIL_UPD *)params;
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2015-12-14 23:44:26 +01:00
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const struct vr_config *cfg;
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if (domain < 0 || domain >= NUM_VR_DOMAINS)
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return;
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/* Use device tree override if requested. */
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if (chip_cfg->vr_config_enable)
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cfg = chip_cfg;
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else
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cfg = &default_configs[domain];
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2016-08-23 11:01:23 +02:00
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vr_params->VrConfigEnable[domain] = cfg->vr_config_enable;
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vr_params->Psi1Threshold[domain] = cfg->psi1threshold;
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vr_params->Psi2Threshold[domain] = cfg->psi2threshold;
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vr_params->Psi3Threshold[domain] = cfg->psi3threshold;
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vr_params->Psi3Enable[domain] = cfg->psi3enable;
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vr_params->Psi4Enable[domain] = cfg->psi4enable;
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vr_params->ImonSlope[domain] = cfg->imon_slope;
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vr_params->ImonOffset[domain] = cfg->imon_offset;
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2018-01-02 05:13:40 +01:00
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vr_params->IccMax[domain] = get_sku_icc_max(domain, cfg->icc_max);
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2016-08-23 11:01:23 +02:00
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vr_params->VrVoltageLimit[domain] = cfg->voltage_limit;
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2017-03-15 00:40:06 +01:00
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#if IS_ENABLED(CONFIG_PLATFORM_USES_FSP2_0)
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vr_params->AcLoadline[domain] = cfg->ac_loadline;
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vr_params->DcLoadline[domain] = cfg->dc_loadline;
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#endif
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2015-12-14 23:44:26 +01:00
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}
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