| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Intel Corp. |
| * (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.) |
| * (Written by Andrey Petrov <andrey.petrov@intel.com> for Intel Corp.) |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 <arch/acpi.h> |
| #include <bootstate.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/mp.h> |
| #include <cpu/x86/msr.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <intelblocks/fast_spi.h> |
| #include <intelblocks/msr.h> |
| #include <fsp/api.h> |
| #include <fsp/util.h> |
| #include <intelblocks/cpulib.h> |
| #include <intelblocks/itss.h> |
| #include <romstage_handoff.h> |
| #include <soc/iomap.h> |
| #include <soc/itss.h> |
| #include <soc/intel/common/vbt.h> |
| #include <soc/nvs.h> |
| #include <soc/pci_devs.h> |
| #include <spi-generic.h> |
| #include <soc/cpu.h> |
| #include <soc/pm.h> |
| #include <soc/p2sb.h> |
| #include <soc/systemagent.h> |
| |
| #include "chip.h" |
| |
| static void *vbt; |
| static struct region_device vbt_rdev; |
| |
| static const char *soc_acpi_name(struct device *dev) |
| { |
| if (dev->path.type == DEVICE_PATH_DOMAIN) |
| return "PCI0"; |
| |
| if (dev->path.type != DEVICE_PATH_PCI) |
| return NULL; |
| |
| switch (dev->path.pci.devfn) { |
| /* DSDT: acpi/northbridge.asl */ |
| case SA_DEVFN_ROOT: |
| return "MCHC"; |
| /* DSDT: acpi/lpc.asl */ |
| case PCH_DEVFN_LPC: |
| return "LPCB"; |
| /* DSDT: acpi/xhci.asl */ |
| case PCH_DEVFN_XHCI: |
| return "XHCI"; |
| /* DSDT: acpi/pch_hda.asl */ |
| case PCH_DEVFN_HDA: |
| return "HDAS"; |
| /* DSDT: acpi/lpss.asl */ |
| case PCH_DEVFN_UART0: |
| return "URT1"; |
| case PCH_DEVFN_UART1: |
| return "URT2"; |
| case PCH_DEVFN_UART2: |
| return "URT3"; |
| case PCH_DEVFN_UART3: |
| return "URT4"; |
| case PCH_DEVFN_SPI0: |
| return "SPI1"; |
| case PCH_DEVFN_SPI1: |
| return "SPI2"; |
| case PCH_DEVFN_SPI2: |
| return "SPI3"; |
| case PCH_DEVFN_PWM: |
| return "PWM"; |
| case PCH_DEVFN_I2C0: |
| return "I2C0"; |
| case PCH_DEVFN_I2C1: |
| return "I2C1"; |
| case PCH_DEVFN_I2C2: |
| return "I2C2"; |
| case PCH_DEVFN_I2C3: |
| return "I2C3"; |
| case PCH_DEVFN_I2C4: |
| return "I2C4"; |
| case PCH_DEVFN_I2C5: |
| return "I2C5"; |
| case PCH_DEVFN_I2C6: |
| return "I2C6"; |
| case PCH_DEVFN_I2C7: |
| return "I2C7"; |
| /* Storage */ |
| case PCH_DEVFN_SDCARD: |
| return "SDCD"; |
| case PCH_DEVFN_EMMC: |
| return "EMMC"; |
| case PCH_DEVFN_SDIO: |
| return "SDIO"; |
| /* PCIe */ |
| case PCH_DEVFN_PCIE1: |
| return "RP01"; |
| } |
| |
| return NULL; |
| } |
| |
| static void pci_set_subsystem(device_t dev, unsigned vendor, unsigned device) |
| { |
| if (!vendor || !device) |
| pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| pci_read_config32(dev, PCI_VENDOR_ID)); |
| else |
| pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| (device << 16) | vendor); |
| } |
| |
| struct pci_operations soc_pci_ops = { |
| .set_subsystem = &pci_set_subsystem |
| }; |
| |
| static void pci_domain_set_resources(device_t dev) |
| { |
| assign_resources(dev->link_list); |
| } |
| |
| static struct device_operations pci_domain_ops = { |
| .read_resources = pci_domain_read_resources, |
| .set_resources = pci_domain_set_resources, |
| .enable_resources = NULL, |
| .init = NULL, |
| .scan_bus = pci_domain_scan_bus, |
| .ops_pci_bus = pci_bus_default_ops, |
| .acpi_name = &soc_acpi_name, |
| }; |
| |
| static struct device_operations cpu_bus_ops = { |
| .read_resources = DEVICE_NOOP, |
| .set_resources = DEVICE_NOOP, |
| .enable_resources = DEVICE_NOOP, |
| .init = apollolake_init_cpus, |
| .scan_bus = NULL, |
| .acpi_fill_ssdt_generator = generate_cpu_entries, |
| }; |
| |
| static void enable_dev(device_t dev) |
| { |
| /* Set the operations if it is a special bus type */ |
| if (dev->path.type == DEVICE_PATH_DOMAIN) |
| dev->ops = &pci_domain_ops; |
| else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) |
| dev->ops = &cpu_bus_ops; |
| } |
| |
| /* |
| * If the PCIe root port at function 0 is disabled, |
| * the PCIe root ports might be coalesced after FSP silicon init. |
| * The below function will swap the devfn of the first enabled device |
| * in devicetree and function 0 resides a pci device |
| * so that it won't confuse coreboot. |
| */ |
| static void pcie_update_device_tree(unsigned int devfn0, int num_funcs) |
| { |
| device_t func0; |
| unsigned int devfn; |
| int i; |
| unsigned int inc = PCI_DEVFN(0, 1); |
| |
| func0 = dev_find_slot(0, devfn0); |
| if (func0 == NULL) |
| return; |
| |
| /* No more functions if function 0 is disabled. */ |
| if (pci_read_config32(func0, PCI_VENDOR_ID) == 0xffffffff) |
| return; |
| |
| devfn = devfn0 + inc; |
| |
| /* |
| * Increase funtion by 1. |
| * Then find first enabled device to replace func0 |
| * as that port was move to func0. |
| */ |
| for (i = 1; i < num_funcs; i++, devfn += inc) { |
| device_t dev = dev_find_slot(0, devfn); |
| if (dev == NULL) |
| continue; |
| |
| if (!dev->enabled) |
| continue; |
| /* Found the first enabled device in given dev number */ |
| func0->path.pci.devfn = dev->path.pci.devfn; |
| dev->path.pci.devfn = devfn0; |
| break; |
| } |
| } |
| |
| static void pcie_override_devicetree_after_silicon_init(void) |
| { |
| pcie_update_device_tree(PCH_DEVFN_PCIE1, 4); |
| pcie_update_device_tree(PCH_DEVFN_PCIE5, 2); |
| } |
| |
| /* Configure package power limits */ |
| static void set_power_limits(void) |
| { |
| static struct soc_intel_apollolake_config *cfg; |
| struct device *dev = SA_DEV_ROOT; |
| msr_t rapl_msr_reg, limit; |
| uint32_t power_unit; |
| uint32_t tdp, min_power, max_power; |
| uint32_t pl2_val; |
| |
| if (!dev || !dev->chip_info) { |
| printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n"); |
| return; |
| } |
| |
| cfg = dev->chip_info; |
| |
| /* Get units */ |
| rapl_msr_reg = rdmsr(MSR_PKG_POWER_SKU_UNIT); |
| power_unit = 1 << (rapl_msr_reg.lo & 0xf); |
| |
| /* Get power defaults for this SKU */ |
| rapl_msr_reg = rdmsr(MSR_PKG_POWER_SKU); |
| tdp = rapl_msr_reg.lo & PKG_POWER_LIMIT_MASK; |
| pl2_val = rapl_msr_reg.hi & PKG_POWER_LIMIT_MASK; |
| min_power = (rapl_msr_reg.lo >> 16) & PKG_POWER_LIMIT_MASK; |
| max_power = rapl_msr_reg.hi & PKG_POWER_LIMIT_MASK; |
| |
| if (min_power > 0 && tdp < min_power) |
| tdp = min_power; |
| |
| if (max_power > 0 && tdp > max_power) |
| tdp = max_power; |
| |
| /* Set PL1 override value */ |
| tdp = (cfg->tdp_pl1_override_mw == 0) ? |
| tdp : (cfg->tdp_pl1_override_mw * power_unit) / 1000; |
| /* Set PL2 override value */ |
| pl2_val = (cfg->tdp_pl2_override_mw == 0) ? |
| pl2_val : (cfg->tdp_pl2_override_mw * power_unit) / 1000; |
| |
| /* Set long term power limit to TDP */ |
| limit.lo = tdp & PKG_POWER_LIMIT_MASK; |
| /* Set PL1 Pkg Power clamp bit */ |
| limit.lo |= PKG_POWER_LIMIT_CLAMP; |
| |
| limit.lo |= PKG_POWER_LIMIT_EN; |
| limit.lo |= (MB_POWER_LIMIT1_TIME_DEFAULT & |
| PKG_POWER_LIMIT_TIME_MASK) << PKG_POWER_LIMIT_TIME_SHIFT; |
| |
| /* Set short term power limit PL2 */ |
| limit.hi = pl2_val & PKG_POWER_LIMIT_MASK; |
| limit.hi |= PKG_POWER_LIMIT_EN; |
| |
| /* Program package power limits in RAPL MSR */ |
| wrmsr(MSR_PKG_POWER_LIMIT, limit); |
| printk(BIOS_INFO, "RAPL PL1 %d.%dW\n", tdp / power_unit, |
| 100 * (tdp % power_unit) / power_unit); |
| printk(BIOS_INFO, "RAPL PL2 %d.%dW\n", pl2_val / power_unit, |
| 100 * (pl2_val % power_unit) / power_unit); |
| |
| /* Setting RAPL MMIO register for Power limits. |
| * RAPL driver is using MSR instead of MMIO. |
| * So, disabled LIMIT_EN bit for MMIO. */ |
| MCHBAR32(MCHBAR_RAPL_PPL) = limit.lo & ~PKG_POWER_LIMIT_EN; |
| MCHBAR32(MCHBAR_RAPL_PPL + 4) = limit.hi & ~PKG_POWER_LIMIT_EN; |
| } |
| |
| static void soc_init(void *data) |
| { |
| struct global_nvs_t *gnvs; |
| |
| /* Save VBT info and mapping */ |
| vbt = vbt_get(&vbt_rdev); |
| |
| /* Snapshot the current GPIO IRQ polarities. FSP is setting a |
| * default policy that doesn't honor boards' requirements. */ |
| itss_snapshot_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END); |
| |
| fsp_silicon_init(romstage_handoff_is_resume()); |
| |
| /* Restore GPIO IRQ polarities back to previous settings. */ |
| itss_restore_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END); |
| |
| /* override 'enabled' setting in device tree if needed */ |
| pcie_override_devicetree_after_silicon_init(); |
| |
| /* |
| * Keep the P2SB device visible so it and the other devices are |
| * visible in coreboot for driver support and PCI resource allocation. |
| * There is a UPD setting for this, but it's more consistent to use |
| * hide and unhide symmetrically. |
| */ |
| p2sb_unhide(); |
| |
| /* Allocate ACPI NVS in CBMEM */ |
| gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(*gnvs)); |
| |
| /* Set RAPL MSR for Package power limits*/ |
| set_power_limits(); |
| } |
| |
| static void soc_final(void *data) |
| { |
| if (vbt) |
| rdev_munmap(&vbt_rdev, vbt); |
| |
| /* Disable global reset, just in case */ |
| global_reset_enable(0); |
| /* Make sure payload/OS can't trigger global reset */ |
| global_reset_lock(); |
| } |
| |
| static void disable_dev(struct device *dev, FSP_S_CONFIG *silconfig) |
| { |
| switch (dev->path.pci.devfn) { |
| case PCH_DEVFN_ISH: |
| silconfig->IshEnable = 0; |
| break; |
| case PCH_DEVFN_SATA: |
| silconfig->EnableSata = 0; |
| break; |
| case PCH_DEVFN_PCIE5: |
| silconfig->PcieRootPortEn[0] = 0; |
| silconfig->PcieRpHotPlug[0] = 0; |
| break; |
| case PCH_DEVFN_PCIE6: |
| silconfig->PcieRootPortEn[1] = 0; |
| silconfig->PcieRpHotPlug[1] = 0; |
| break; |
| case PCH_DEVFN_PCIE1: |
| silconfig->PcieRootPortEn[2] = 0; |
| silconfig->PcieRpHotPlug[2] = 0; |
| break; |
| case PCH_DEVFN_PCIE2: |
| silconfig->PcieRootPortEn[3] = 0; |
| silconfig->PcieRpHotPlug[3] = 0; |
| break; |
| case PCH_DEVFN_PCIE3: |
| silconfig->PcieRootPortEn[4] = 0; |
| silconfig->PcieRpHotPlug[4] = 0; |
| break; |
| case PCH_DEVFN_PCIE4: |
| silconfig->PcieRootPortEn[5] = 0; |
| silconfig->PcieRpHotPlug[5] = 0; |
| break; |
| case PCH_DEVFN_XHCI: |
| silconfig->Usb30Mode = 0; |
| break; |
| case PCH_DEVFN_XDCI: |
| silconfig->UsbOtg = 0; |
| break; |
| case PCH_DEVFN_I2C0: |
| silconfig->I2c0Enable = 0; |
| break; |
| case PCH_DEVFN_I2C1: |
| silconfig->I2c1Enable = 0; |
| break; |
| case PCH_DEVFN_I2C2: |
| silconfig->I2c2Enable = 0; |
| break; |
| case PCH_DEVFN_I2C3: |
| silconfig->I2c3Enable = 0; |
| break; |
| case PCH_DEVFN_I2C4: |
| silconfig->I2c4Enable = 0; |
| break; |
| case PCH_DEVFN_I2C5: |
| silconfig->I2c5Enable = 0; |
| break; |
| case PCH_DEVFN_I2C6: |
| silconfig->I2c6Enable = 0; |
| break; |
| case PCH_DEVFN_I2C7: |
| silconfig->I2c7Enable = 0; |
| break; |
| case PCH_DEVFN_UART0: |
| silconfig->Hsuart0Enable = 0; |
| break; |
| case PCH_DEVFN_UART1: |
| silconfig->Hsuart1Enable = 0; |
| break; |
| case PCH_DEVFN_UART2: |
| silconfig->Hsuart2Enable = 0; |
| break; |
| case PCH_DEVFN_UART3: |
| silconfig->Hsuart3Enable = 0; |
| break; |
| case PCH_DEVFN_SPI0: |
| silconfig->Spi0Enable = 0; |
| break; |
| case PCH_DEVFN_SPI1: |
| silconfig->Spi1Enable = 0; |
| break; |
| case PCH_DEVFN_SPI2: |
| silconfig->Spi2Enable = 0; |
| break; |
| case PCH_DEVFN_SDCARD: |
| silconfig->SdcardEnabled = 0; |
| break; |
| case PCH_DEVFN_EMMC: |
| silconfig->eMMCEnabled = 0; |
| break; |
| case PCH_DEVFN_SDIO: |
| silconfig->SdioEnabled = 0; |
| break; |
| case PCH_DEVFN_SMBUS: |
| silconfig->SmbusEnable = 0; |
| break; |
| default: |
| printk(BIOS_WARNING, "PCI:%02x.%01x: Could not disable the device\n", |
| PCI_SLOT(dev->path.pci.devfn), |
| PCI_FUNC(dev->path.pci.devfn)); |
| break; |
| } |
| } |
| |
| static void parse_devicetree(FSP_S_CONFIG *silconfig) |
| { |
| struct device *dev = SA_DEV_ROOT; |
| |
| if (!dev) { |
| printk(BIOS_ERR, "Could not find root device\n"); |
| return; |
| } |
| /* Only disable bus 0 devices. */ |
| for (dev = dev->bus->children; dev; dev = dev->sibling) { |
| if (!dev->enabled) |
| disable_dev(dev, silconfig); |
| } |
| } |
| |
| void platform_fsp_silicon_init_params_cb(FSPS_UPD *silupd) |
| { |
| FSP_S_CONFIG *silconfig = &silupd->FspsConfig; |
| static struct soc_intel_apollolake_config *cfg; |
| uint8_t port; |
| |
| /* Load VBT before devicetree-specific config. */ |
| silconfig->GraphicsConfigPtr = (uintptr_t)vbt; |
| |
| struct device *dev = SA_DEV_ROOT; |
| |
| if (!dev || !dev->chip_info) { |
| printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n"); |
| return; |
| } |
| |
| cfg = dev->chip_info; |
| |
| /* Parse device tree and disable unused device*/ |
| parse_devicetree(silconfig); |
| |
| silconfig->PcieRpClkReqNumber[0] = cfg->pcie_rp0_clkreq_pin; |
| silconfig->PcieRpClkReqNumber[1] = cfg->pcie_rp1_clkreq_pin; |
| silconfig->PcieRpClkReqNumber[2] = cfg->pcie_rp2_clkreq_pin; |
| silconfig->PcieRpClkReqNumber[3] = cfg->pcie_rp3_clkreq_pin; |
| silconfig->PcieRpClkReqNumber[4] = cfg->pcie_rp4_clkreq_pin; |
| silconfig->PcieRpClkReqNumber[5] = cfg->pcie_rp5_clkreq_pin; |
| |
| if (cfg->emmc_tx_cmd_cntl != 0) |
| silconfig->EmmcTxCmdCntl = cfg->emmc_tx_cmd_cntl; |
| if (cfg->emmc_tx_data_cntl1 != 0) |
| silconfig->EmmcTxDataCntl1 = cfg->emmc_tx_data_cntl1; |
| if (cfg->emmc_tx_data_cntl2 != 0) |
| silconfig->EmmcTxDataCntl2 = cfg->emmc_tx_data_cntl2; |
| if (cfg->emmc_rx_cmd_data_cntl1 != 0) |
| silconfig->EmmcRxCmdDataCntl1 = cfg->emmc_rx_cmd_data_cntl1; |
| if (cfg->emmc_rx_strobe_cntl != 0) |
| silconfig->EmmcRxStrobeCntl = cfg->emmc_rx_strobe_cntl; |
| if (cfg->emmc_rx_cmd_data_cntl2 != 0) |
| silconfig->EmmcRxCmdDataCntl2 = cfg->emmc_rx_cmd_data_cntl2; |
| |
| silconfig->LPSS_S0ixEnable = cfg->lpss_s0ix_enable; |
| |
| /* Disable monitor mwait since it is broken due to a hardware bug |
| * without a fix |
| */ |
| silconfig->MonitorMwaitEnable = 0; |
| |
| silconfig->SkipMpInit = 1; |
| |
| /* Disable setting of EISS bit in FSP. */ |
| silconfig->SpiEiss = 0; |
| |
| /* Disable FSP from locking access to the RTC NVRAM */ |
| silconfig->RtcLock = 0; |
| |
| /* Enable Audio clk gate and power gate */ |
| silconfig->HDAudioClkGate = cfg->hdaudio_clk_gate_enable; |
| silconfig->HDAudioPwrGate = cfg->hdaudio_pwr_gate_enable; |
| /* Bios config lockdown Audio clk and power gate */ |
| silconfig->BiosCfgLockDown = cfg->hdaudio_bios_config_lockdown; |
| |
| /* USB2 eye diagram settings per port */ |
| for (port = 0; port < APOLLOLAKE_USB2_PORT_MAX; port++) { |
| if (cfg->usb2eye[port].Usb20PerPortTxPeHalf != 0) |
| silconfig->PortUsb20PerPortTxPeHalf[port] = |
| cfg->usb2eye[port].Usb20PerPortTxPeHalf; |
| |
| if (cfg->usb2eye[port].Usb20PerPortPeTxiSet != 0) |
| silconfig->PortUsb20PerPortPeTxiSet[port] = |
| cfg->usb2eye[port].Usb20PerPortPeTxiSet; |
| |
| if (cfg->usb2eye[port].Usb20PerPortTxiSet != 0) |
| silconfig->PortUsb20PerPortTxiSet[port] = |
| cfg->usb2eye[port].Usb20PerPortTxiSet; |
| |
| if (cfg->usb2eye[port].Usb20HsSkewSel != 0) |
| silconfig->PortUsb20HsSkewSel[port] = |
| cfg->usb2eye[port].Usb20HsSkewSel; |
| |
| if (cfg->usb2eye[port].Usb20IUsbTxEmphasisEn != 0) |
| silconfig->PortUsb20IUsbTxEmphasisEn[port] = |
| cfg->usb2eye[port].Usb20IUsbTxEmphasisEn; |
| |
| if (cfg->usb2eye[port].Usb20PerPortRXISet != 0) |
| silconfig->PortUsb20PerPortRXISet[port] = |
| cfg->usb2eye[port].Usb20PerPortRXISet; |
| |
| if (cfg->usb2eye[port].Usb20HsNpreDrvSel != 0) |
| silconfig->PortUsb20HsNpreDrvSel[port] = |
| cfg->usb2eye[port].Usb20HsNpreDrvSel; |
| } |
| |
| } |
| |
| struct chip_operations soc_intel_apollolake_ops = { |
| CHIP_NAME("Intel Apollolake SOC") |
| .enable_dev = &enable_dev, |
| .init = &soc_init, |
| .final = &soc_final |
| }; |
| |
| static void drop_privilege_all(void) |
| { |
| /* Drop privilege level on all the CPUs */ |
| if (mp_run_on_all_cpus(&cpu_enable_untrusted_mode, 1000) < 0) |
| printk(BIOS_ERR, "failed to enable untrusted mode\n"); |
| } |
| |
| void platform_fsp_notify_status(enum fsp_notify_phase phase) |
| { |
| if (phase == END_OF_FIRMWARE) { |
| /* Hide the P2SB device to align with previous behavior. */ |
| p2sb_hide(); |
| /* |
| * As per guidelines BIOS is recommended to drop CPU privilege |
| * level to IA_UNTRUSTED. After that certain device registers |
| * and MSRs become inaccessible supposedly increasing system |
| * security. |
| */ |
| drop_privilege_all(); |
| } |
| } |
| |
| /* |
| * spi_flash init() needs to run unconditionally on every boot (including |
| * resume) to allow write protect to be disabled for eventlog and nvram |
| * updates. This needs to be done as early as possible in ramstage. Thus, add a |
| * callback for entry into BS_PRE_DEVICE. |
| */ |
| static void spi_flash_init_cb(void *unused) |
| { |
| fast_spi_init(); |
| } |
| |
| BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_ENTRY, spi_flash_init_cb, NULL); |