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/*
* This file is part of the coreboot project.
*
* Copyright 2015 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <fsp/api.h>
#include <soc/ramstage.h>
#include <soc/vr_config.h>
#include <console/console.h>
#include <intelblocks/cpulib.h>
/* Default values for domain configuration. PSI3 and PSI4 are disabled. */
static const struct vr_config default_configs[NUM_VR_DOMAINS] = {
[VR_SYSTEM_AGENT] = {
.vr_config_enable = 1,
.psi1threshold = VR_CFG_AMP(20),
.psi2threshold = VR_CFG_AMP(4),
.psi3threshold = VR_CFG_AMP(1),
.psi3enable = 0,
.psi4enable = 0,
.imon_slope = 0x0,
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(7),
.voltage_limit = 1520,
},
[VR_IA_CORE] = {
.vr_config_enable = 1,
.psi1threshold = VR_CFG_AMP(20),
.psi2threshold = VR_CFG_AMP(5),
.psi3threshold = VR_CFG_AMP(1),
.psi3enable = 0,
.psi4enable = 0,
.imon_slope = 0x0,
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(34),
.voltage_limit = 1520,
},
#if CONFIG(PLATFORM_USES_FSP1_1)
[VR_RING] = {
.vr_config_enable = 1,
.psi1threshold = VR_CFG_AMP(20),
.psi2threshold = VR_CFG_AMP(5),
.psi3threshold = VR_CFG_AMP(1),
.psi3enable = 0,
.psi4enable = 0,
.imon_slope = 0x0,
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(34),
.voltage_limit = 1520,
},
#endif
[VR_GT_UNSLICED] = {
.vr_config_enable = 1,
.psi1threshold = VR_CFG_AMP(20),
.psi2threshold = VR_CFG_AMP(5),
.psi3threshold = VR_CFG_AMP(1),
.psi3enable = 0,
.psi4enable = 0,
.imon_slope = 0x0,
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(35),
.voltage_limit = 1520,
},
[VR_GT_SLICED] = {
.vr_config_enable = 1,
.psi1threshold = VR_CFG_AMP(20),
.psi2threshold = VR_CFG_AMP(5),
.psi3threshold = VR_CFG_AMP(1),
.psi3enable = 0,
.psi4enable = 0,
.imon_slope = 0x0,
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(35),
.voltage_limit = 1520,
},
};
static uint16_t get_sku_icc_max(int domain)
{
const uint16_t tdp = cpu_get_power_max();
static uint16_t mch_id = 0, igd_id = 0;
if (!mch_id) {
struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT);
mch_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff;
}
if (!igd_id) {
struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD);
igd_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff;
}
/*
* Iccmax table from Doc #559100 Section 7.2 DC Specifications, the
* Iccmax is the same among KBL-Y but KBL-U/R.
* Addendum for AML-Y #594883, IccMax for IA core is 28A.
* KBL-S #335195, KBL-H #335190, SKL-S #332687, SKL-H #332986,
* SKL-U/Y #332990
*
* Platform Segment SA IA GT (GT/GTx)
* ---------------------------------------------------------------------
* KBL/SKL-S (95W) quad 11.1 100 45
* SKL-S (80W) quad 11.1 82 45
* KBL/SKL-S (65W) quad 11.1 79 45
* SKL-S (45W) quad 11.1 70 0
* KBL/SKL-S (35W) quad 11.1 66 35
* SKL-S (25W) quad 11.1 55 35
*
* KBL/SKL-S (54W) dual 11.1 58 48
* KBL/SKL-S (51W) dual 11.1 45 48
* KBL/SKL-S (35W) dual 11.1 40 48
*
* SKL-H + OPC (65W) GT4 quad 8 74 105/24
* SKL-H + OPC (45W) GT4 quad 8 74 94/20
* SKL-H + OPC (35W) GT4 quad 8 66 94/20
*
* SKL-H (35W) GT2 dual 11.1 60 55
*
* KBL/SKL-H (45W) GT2 quad 11.1 68 55
* KBL-H (18W) GT2 quad 6.6 60 55
*
* SKL-U + OPC (28W) GT3 dual 5.1 32 57/19
* SKL-U + OPC (15W) GT3 dual 5.1 29 57/19
* SKL-U (15W) GT2 dual 4.5 29 31
*
* KBL-U/R + OPC (28W) GT3 dual 5.1 32 57/19
* KBL-U/R + OPC (15W) GT3 dual 5.1 32 57/19
*
* KBL-U/R (15W) GT2 quad 6 64 31
* KBL-U/R (15W) GT1/2 dual 4.5 32 31
* KBL-U/R (15W) GT2 quad 4.5 29 31
*
* SKL/KBL-Y (6W) 4.1 24 24
* SKL/KBL-Y (4.5W) 4.1 24 24
*/
switch (mch_id) {
case PCI_DEVICE_ID_INTEL_SKL_ID_S_2: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_S: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(11.1, 40, 48, 48);
if (tdp >= 54)
icc_max[VR_IA_CORE] = VR_CFG_AMP(58);
else if (tdp >= 51)
icc_max[VR_IA_CORE] = VR_CFG_AMP(45);
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_S_4: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_DT_2: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_DT: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(11.1, 55, 45, 45);
if (tdp >= 91)
icc_max[VR_IA_CORE] = VR_CFG_AMP(100);
else if (tdp >= 80)
icc_max[VR_IA_CORE] = VR_CFG_AMP(82);
else if (tdp >= 65)
icc_max[VR_IA_CORE] = VR_CFG_AMP(79);
else if (tdp >= 45) {
icc_max[VR_IA_CORE] = VR_CFG_AMP(70);
icc_max[VR_GT_SLICED] = 0;
icc_max[VR_GT_UNSLICED] = 0;
} else if (tdp >= 25) {
if (tdp >= 35)
icc_max[VR_IA_CORE] = VR_CFG_AMP(66);
icc_max[VR_GT_SLICED] = VR_CFG_AMP(35);
icc_max[VR_GT_UNSLICED] = VR_CFG_AMP(35);
}
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_H_4: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(11.1, 60, 94, 20);
if (tdp >= 45) {
icc_max[VR_IA_CORE] = VR_CFG_AMP(74);
if (tdp >= 65) {
icc_max[VR_GT_SLICED] = VR_CFG_AMP(105);
icc_max[VR_GT_UNSLICED] = VR_CFG_AMP(24);
}
}
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_H_2: /* fallthrough */
case PCI_DEVICE_ID_INTEL_SKL_ID_H_EM: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_H: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(6.6, 60, 55, 55);
if (tdp >= 35) {
if (tdp >= 45)
icc_max[VR_IA_CORE] = VR_CFG_AMP(68);
icc_max[VR_SYSTEM_AGENT] = VR_CFG_AMP(11.1);
}
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_U: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(5.1, 29, 57, 19);
if (tdp >= 28)
icc_max[VR_IA_CORE] = VR_CFG_AMP(32);
else if (igd_id != PCI_DEVICE_ID_INTEL_SKL_GT3E_SULTM_1) {
const uint16_t icc_max_gt2[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_ICC(4.5, 29, 31, 31);
return icc_max_gt2[domain];
}
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_KBL_U_R: {
const uint16_t icc_max[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_ICC(6, 64, 31, 31);
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_Y: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_Y: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(4.1, 24, 24, 24);
if (igd_id == PCI_DEVICE_ID_INTEL_AML_GT2_ULX)
icc_max[VR_IA_CORE] = VR_CFG_AMP(28);
return icc_max[domain];
}
case PCI_DEVICE_ID_INTEL_KBL_ID_U: {
uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(4.5, 32, 31, 31);
if ((igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_1) ||
(igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_2))
icc_max[VR_IA_CORE] = VR_CFG_AMP(29);
return icc_max[domain];
}
default:
printk(BIOS_ERR, "ERROR: Unknown MCH (%u) in VR-config\n", mch_id);
}
return 0;
}
#if CONFIG(PLATFORM_USES_FSP2_0)
static uint16_t get_sku_ac_dc_loadline(const int domain)
{
static uint16_t mch_id = 0, igd_id = 0;
if (!mch_id) {
struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT);
mch_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff;
}
if (!igd_id) {
struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD);
igd_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff;
}
switch (mch_id) {
case PCI_DEVICE_ID_INTEL_SKL_ID_S_2: /* fallthrough */
case PCI_DEVICE_ID_INTEL_SKL_ID_S_4: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_S: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_DT: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_DT_2: {
/* SA Loadline is not specified */
const uint16_t loadline[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_LOADLINE(0, 2.1, 3.1, 3.1);
return loadline[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_H_2: /* fallthrough */
case PCI_DEVICE_ID_INTEL_SKL_ID_H_EM: /* fallthrough */
case PCI_DEVICE_ID_INTEL_SKL_ID_H_4: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_H: {
const uint16_t loadline[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_LOADLINE(10, 1.8, 2.65, 2.65);
if (igd_id == PCI_DEVICE_ID_INTEL_SKL_GT4_SHALM) {
const uint16_t loadline_gt4[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_LOADLINE(6, 1.6, 1.4, 6);
return loadline_gt4[domain];
}
return loadline[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_Y: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_Y: {
uint16_t loadline[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_LOADLINE(18, 5.9, 5.7, 5.7);
if (igd_id == PCI_DEVICE_ID_INTEL_AML_GT2_ULX)
loadline[VR_IA_CORE] = VR_CFG_MOHMS(4);
return loadline[domain];
}
case PCI_DEVICE_ID_INTEL_SKL_ID_U: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_U_R: /* fallthrough */
case PCI_DEVICE_ID_INTEL_KBL_ID_U: {
uint16_t loadline[NUM_VR_DOMAINS] =
VR_CFG_ALL_DOMAINS_LOADLINE(10.3, 2.4, 3.1, 3.1);
if ((igd_id == PCI_DEVICE_ID_INTEL_SKL_GT3E_SULTM_1) ||
(igd_id == PCI_DEVICE_ID_INTEL_SKL_GT3E_SULTM_2) ||
(igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_1) ||
(igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_2)) {
loadline[VR_GT_UNSLICED] = VR_CFG_MOHMS(2);
loadline[VR_GT_SLICED] = VR_CFG_MOHMS(6);
}
return loadline[domain];
}
default:
printk(BIOS_ERR, "ERROR: Unknown MCH (%u) in VR-config\n", mch_id);
}
return 0;
}
#endif
void fill_vr_domain_config(void *params,
int domain, const struct vr_config *chip_cfg)
{
FSP_SIL_UPD *vr_params = (FSP_SIL_UPD *)params;
const struct vr_config *cfg;
if (domain < 0 || domain >= NUM_VR_DOMAINS)
return;
/* Use device tree override if requested. */
if (chip_cfg->vr_config_enable)
cfg = chip_cfg;
else
cfg = &default_configs[domain];
vr_params->VrConfigEnable[domain] = cfg->vr_config_enable;
vr_params->Psi1Threshold[domain] = cfg->psi1threshold;
vr_params->Psi2Threshold[domain] = cfg->psi2threshold;
vr_params->Psi3Threshold[domain] = cfg->psi3threshold;
vr_params->Psi3Enable[domain] = cfg->psi3enable;
vr_params->Psi4Enable[domain] = cfg->psi4enable;
vr_params->ImonSlope[domain] = cfg->imon_slope;
vr_params->ImonOffset[domain] = cfg->imon_offset;
/* If board provided non-zero value, use it. */
if (cfg->icc_max)
vr_params->IccMax[domain] = cfg->icc_max;
else
vr_params->IccMax[domain] = get_sku_icc_max(domain);
vr_params->VrVoltageLimit[domain] = cfg->voltage_limit;
#if CONFIG(PLATFORM_USES_FSP2_0)
if (cfg->ac_loadline)
vr_params->AcLoadline[domain] = cfg->ac_loadline;
else
vr_params->AcLoadline[domain] = get_sku_ac_dc_loadline(domain);
if (cfg->dc_loadline)
vr_params->DcLoadline[domain] = cfg->dc_loadline;
else
vr_params->DcLoadline[domain] = get_sku_ac_dc_loadline(domain);
#endif
}
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