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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2014 Google Inc.
* Copyright (C) 2017 Intel Corporation.
*
* 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 <chip.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <arch/io.h>
#include <arch/ioapic.h>
#include <arch/acpi.h>
#include <cpu/cpu.h>
#include <intelblocks/pcr.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/rtc.h>
#include <pc80/mc146818rtc.h>
#include <string.h>
#include <soc/gpio.h>
#include <soc/iomap.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <cpu/x86/smm.h>
#include <soc/pcr_ids.h>
#include <soc/ramstage.h>
#include <vboot/vbnv.h>
#include <vboot/vbnv_layout.h>
static void pch_pmc_add_mmio_resources(device_t dev)
{
struct resource *res;
/* Memory-mmapped I/O registers. */
res = new_resource(dev, PWRMBASE);
res->base = PCH_PWRM_BASE_ADDRESS;
res->size = PCH_PWRM_BASE_SIZE;
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED |
IORESOURCE_FIXED | IORESOURCE_RESERVE;
}
static void pch_pmc_add_io_resource(device_t dev, u16 base, u16 size, int index)
{
struct resource *res;
res = new_resource(dev, index);
res->base = base;
res->size = size;
res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
static void pch_pmc_add_io_resources(device_t dev)
{
/* PMBASE */
pch_pmc_add_io_resource(dev, ACPI_BASE_ADDRESS, ACPI_BASE_SIZE, ABASE);
}
static void pch_pmc_read_resources(device_t dev)
{
/* Get the normal PCI resources of this device. */
pci_dev_read_resources(dev);
/* Add non-standard MMIO resources. */
pch_pmc_add_mmio_resources(dev);
/* Add IO resources. */
pch_pmc_add_io_resources(dev);
}
static void pch_set_acpi_mode(void)
{
if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER) && !acpi_is_wakeup_s3()) {
printk(BIOS_DEBUG, "Disabling ACPI via APMC:\n");
outb(APM_CNT_ACPI_DISABLE, APM_CNT);
printk(BIOS_DEBUG, "done.\n");
}
}
static void config_deep_sX(uint32_t offset, uint32_t mask, int sx, int enable)
{
uint32_t reg;
uint8_t *pmcbase = pmc_mmio_regs();
printk(BIOS_DEBUG, "%sabling Deep S%c\n",
enable ? "En" : "Dis", sx + '0');
reg = read32(pmcbase + offset);
if (enable)
reg |= mask;
else
reg &= ~mask;
write32(pmcbase + offset, reg);
}
static void config_deep_s5(int on_ac, int on_dc)
{
/* Treat S4 the same as S5. */
config_deep_sX(S4_PWRGATE_POL, S4AC_GATE_SUS, 4, on_ac);
config_deep_sX(S4_PWRGATE_POL, S4DC_GATE_SUS, 4, on_dc);
config_deep_sX(S5_PWRGATE_POL, S5AC_GATE_SUS, 5, on_ac);
config_deep_sX(S5_PWRGATE_POL, S5DC_GATE_SUS, 5, on_dc);
}
static void config_deep_s3(int on_ac, int on_dc)
{
config_deep_sX(S3_PWRGATE_POL, S3AC_GATE_SUS, 3, on_ac);
config_deep_sX(S3_PWRGATE_POL, S3DC_GATE_SUS, 3, on_dc);
}
static void config_deep_sx(uint32_t deepsx_config)
{
uint32_t reg;
uint8_t *pmcbase = pmc_mmio_regs();
reg = read32(pmcbase + DSX_CFG);
reg &= ~DSX_CFG_MASK;
reg |= deepsx_config;
write32(pmcbase + DSX_CFG, reg);
}
static void pmc_init(struct device *dev)
{
config_t *config = dev->chip_info;
rtc_init();
/* Initialize power management */
pmc_gpe_init();
pch_set_acpi_mode();
config_deep_s3(config->deep_s3_enable_ac, config->deep_s3_enable_dc);
config_deep_s5(config->deep_s5_enable_ac, config->deep_s5_enable_dc);
config_deep_sx(config->deep_sx_config);
}
static struct device_operations device_ops = {
.read_resources = &pch_pmc_read_resources,
.set_resources = &pci_dev_set_resources,
.enable_resources = &pci_dev_enable_resources,
.init = &pmc_init,
.scan_bus = &scan_lpc_bus,
};
static const unsigned short pci_device_ids[] = {
PCI_DEVICE_ID_INTEL_CNL_PMC,
0
};
static const struct pci_driver pch_lpc __pci_driver = {
.ops = &device_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
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