blob: 152f8f90d9d3223e43f36a5dcfe501ce19a5db94 [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2019-2020 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; 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.
*/
/*
* This file is created based on Intel Tiger Lake Processor SA Datasheet
* Document number: 571131
* Chapter number: 3
*/
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <intelblocks/systemagent.h>
#include <soc/iomap.h>
#include <soc/systemagent.h>
/*
* SoC implementation
*
* Add all known fixed memory ranges for Host Controller/Memory
* controller.
*/
void soc_add_fixed_mmio_resources(struct device *dev, int *index)
{
static const struct sa_mmio_descriptor soc_fixed_resources[] = {
{ PCIEXBAR, CONFIG_MMCONF_BASE_ADDRESS, CONFIG_SA_PCIEX_LENGTH,
"PCIEXBAR" },
{ MCHBAR, MCH_BASE_ADDRESS, MCH_BASE_SIZE, "MCHBAR" },
{ DMIBAR, DMI_BASE_ADDRESS, DMI_BASE_SIZE, "DMIBAR" },
{ EPBAR, EP_BASE_ADDRESS, EP_BASE_SIZE, "EPBAR" },
{ REGBAR, REG_BASE_ADDRESS, REG_BASE_SIZE, "REGBAR" },
{ EDRAMBAR, EDRAM_BASE_ADDRESS, EDRAM_BASE_SIZE, "EDRAMBAR" },
/*
* PMC pci device gets hidden from PCI bus due to Silicon
* policy hence binding PMCBAR aka PWRMBASE (offset 0x10) with
* SA resources to ensure that PMCBAR falls under PCI reserved
* memory range.
*
* Note: Don't add any more resource with same offset 0x10
* under this device space.
*/
{ PCI_BASE_ADDRESS_0, PCH_PWRM_BASE_ADDRESS, PCH_PWRM_BASE_SIZE,
"PMCBAR" },
};
sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources,
ARRAY_SIZE(soc_fixed_resources));
/* Add Vt-d resources if VT-d is enabled */
if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE))
return;
sa_add_fixed_mmio_resources(dev, index, soc_vtd_resources,
ARRAY_SIZE(soc_vtd_resources));
}
/*
* SoC implementation
*
* Perform System Agent Initialization during Ramstage phase.
*/
void soc_systemagent_init(struct device *dev)
{
/* Enable Power Aware Interrupt Routing */
enable_power_aware_intr();
/* Enable BIOS Reset CPL */
enable_bios_reset_cpl();
}