/* * This file is part of the coreboot project. * * Copyright (C) 2014 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <cbmem.h> #include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> #include <device/pci_ops.h> #include <arch/io.h> #include <delay.h> #include <broadwell/adsp.h> #include <broadwell/device_nvs.h> #include <broadwell/iobp.h> #include <broadwell/nvs.h> #include <broadwell/pch.h> #include <broadwell/ramstage.h> #include <broadwell/rcba.h> #include <chip.h> static void adsp_init(struct device *dev) { config_t *config = dev->chip_info; struct resource *bar0, *bar1; u32 tmp32; /* Ensure memory and bus master are enabled */ tmp32 = pci_read_config32(dev, PCI_COMMAND); tmp32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; pci_write_config32(dev, PCI_COMMAND, tmp32); /* Find BAR0 and BAR1 */ bar0 = find_resource(dev, PCI_BASE_ADDRESS_0); if (!bar0) return; bar1 = find_resource(dev, PCI_BASE_ADDRESS_1); if (!bar1) return; /* * Set LTR value in DSP shim LTR control register to 3ms * SNOOP_REQ[13]=1b SNOOP_SCALE[12:10]=100b (1ms) SNOOP_VAL[9:0]=3h */ tmp32 = pch_is_wpt() ? ADSP_SHIM_BASE_WPT : ADSP_SHIM_BASE_LPT; write32(bar0->base + tmp32 + ADSP_SHIM_LTRC, ADSP_SHIM_LTRC_VALUE); /* Program VDRTCTL2 D19:F0:A8[31:0] = 0x00000fff */ pci_write_config32(dev, ADSP_PCI_VDRTCTL2, ADSP_VDRTCTL2_VALUE); /* Program ADSP IOBP VDLDAT1 to 0x040100 */ pch_iobp_write(ADSP_IOBP_VDLDAT1, ADSP_VDLDAT1_VALUE); /* Set D3 Power Gating Enable in D19:F0:A0 based on PCH type */ tmp32 = pci_read_config32(dev, ADSP_PCI_VDRTCTL0); if (pch_is_wpt()) { tmp32 &= ~ADSP_VDRTCTL0_D3PGD_WPT; tmp32 &= ~ADSP_VDRTCTL0_D3SRAMPGD_WPT; } else { tmp32 &= ~ADSP_VDRTCTL0_D3PGD_LPT; tmp32 &= ~ADSP_VDRTCTL0_D3SRAMPGD_LPT; } pci_write_config32(dev, ADSP_PCI_VDRTCTL0, tmp32); /* Set PSF Snoop to SA, RCBA+0x3350[10]=1b */ RCBA32_OR(0x3350, (1 << 10)); /* Set DSP IOBP PMCTL 0x1e0=0x3f */ pch_iobp_write(ADSP_IOBP_PMCTL, ADSP_PMCTL_VALUE); if (config->sio_acpi_mode) { /* Configure for ACPI mode */ global_nvs_t *gnvs; printk(BIOS_INFO, "ADSP: Enable ACPI Mode IRQ3\n"); /* Find ACPI NVS to update BARs */ gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS); if (!gnvs) { printk(BIOS_ERR, "Unable to locate Global NVS\n"); return; } /* Save BAR0 and BAR1 to ACPI NVS */ gnvs->dev.bar0[SIO_NVS_ADSP] = (u32)bar0->base; gnvs->dev.bar1[SIO_NVS_ADSP] = (u32)bar1->base; gnvs->dev.enable[SIO_NVS_ADSP] = 1; /* Set PCI Config Disable Bit */ pch_iobp_update(ADSP_IOBP_PCICFGCTL, ~0, ADSP_PCICFGCTL_PCICD); /* Set interrupt de-assert/assert opcode override to IRQ3 */ pch_iobp_write(ADSP_IOBP_VDLDAT2, ADSP_IOBP_ACPI_IRQ3); /* Enable IRQ3 in RCBA */ RCBA32_OR(ACPIIRQEN, ADSP_ACPI_IRQEN); /* Set ACPI Interrupt Enable Bit */ pch_iobp_update(ADSP_IOBP_PCICFGCTL, ~ADSP_PCICFGCTL_SPCBAD, ADSP_PCICFGCTL_ACPIIE); /* Put ADSP in D3hot */ tmp32 = read32(bar1->base + PCH_PCS); tmp32 |= PCH_PCS_PS_D3HOT; write32(bar1->base + PCH_PCS, tmp32); } else { printk(BIOS_INFO, "ADSP: Enable PCI Mode IRQ23\n"); /* Configure for PCI mode */ pci_write_config32(dev, PCI_INTERRUPT_LINE, ADSP_PCI_IRQ); /* Clear ACPI Interrupt Enable Bit */ pch_iobp_update(ADSP_IOBP_PCICFGCTL, ~(ADSP_PCICFGCTL_SPCBAD | ADSP_PCICFGCTL_ACPIIE), 0); } } static struct device_operations adsp_ops = { .read_resources = &pci_dev_read_resources, .set_resources = &pci_dev_set_resources, .enable_resources = &pci_dev_enable_resources, .init = &adsp_init, .ops_pci = &broadwell_pci_ops, }; static const unsigned short pci_device_ids[] = { 0x9c36, /* LynxPoint */ 0x9cb6, /* WildcatPoint */ 0 }; static const struct pci_driver pch_adsp __pci_driver = { .ops = &adsp_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = pci_device_ids, };