chip.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include <device/pci.h>
#include <fsp/api.h>
#include <fsp/util.h>
#include <intelblocks/acpi.h>
#include <intelblocks/cfg.h>
#include <intelblocks/gpio.h>
#include <intelblocks/itss.h>
#include <intelblocks/xdci.h>
#include <soc/intel/common/vbt.h>
#include <soc/itss.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
#include <soc/soc_chip.h>
 
#if CONFIG(HAVE_ACPI_TABLES)
const char *soc_acpi_name(const 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) {
        case SA_DEVFN_ROOT:     return "MCHC";
        case SA_DEVFN_IGD:      return "GFX0";
        case PCH_DEVFN_ISH:     return "ISHB";
        case PCH_DEVFN_XHCI:    return "XHCI";
        case PCH_DEVFN_USBOTG:  return "XDCI";
        case PCH_DEVFN_THERMAL: return "THRM";
        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_CSE:     return "CSE1";
        case PCH_DEVFN_CSE_2:   return "CSE2";
        case PCH_DEVFN_CSE_IDER:        return "CSED";
        case PCH_DEVFN_CSE_KT:  return "CSKT";
        case PCH_DEVFN_CSE_3:   return "CSE3";
        case PCH_DEVFN_SATA:    return "SATA";
        case PCH_DEVFN_UART2:   return "UAR2";
        case PCH_DEVFN_I2C4:    return "I2C4";
        case PCH_DEVFN_I2C5:    return "I2C5";
        case PCH_DEVFN_PCIE1:   return "RP01";
        case PCH_DEVFN_PCIE2:   return "RP02";
        case PCH_DEVFN_PCIE3:   return "RP03";
        case PCH_DEVFN_PCIE4:   return "RP04";
        case PCH_DEVFN_PCIE5:   return "RP05";
        case PCH_DEVFN_PCIE6:   return "RP06";
        case PCH_DEVFN_PCIE7:   return "RP07";
        case PCH_DEVFN_PCIE8:   return "RP08";
        case PCH_DEVFN_PCIE9:   return "RP09";
        case PCH_DEVFN_PCIE10:  return "RP10";
        case PCH_DEVFN_PCIE11:  return "RP11";
        case PCH_DEVFN_PCIE12:  return "RP12";
        case PCH_DEVFN_PCIE13:  return "RP13";
        case PCH_DEVFN_PCIE14:  return "RP14";
        case PCH_DEVFN_PCIE15:  return "RP15";
        case PCH_DEVFN_PCIE16:  return "RP16";
        case PCH_DEVFN_PCIE17:  return "RP17";
        case PCH_DEVFN_PCIE18:  return "RP18";
        case PCH_DEVFN_PCIE19:  return "RP19";
        case PCH_DEVFN_PCIE20:  return "RP20";
        case PCH_DEVFN_PCIE21:  return "RP21";
        case PCH_DEVFN_PCIE22:  return "RP22";
        case PCH_DEVFN_PCIE23:  return "RP23";
        case PCH_DEVFN_PCIE24:  return "RP24";
        case PCH_DEVFN_UART0:   return "UAR0";
        case PCH_DEVFN_UART1:   return "UAR1";
        case PCH_DEVFN_GSPI0:   return "SPI0";
        case PCH_DEVFN_GSPI1:   return "SPI1";
        case PCH_DEVFN_GSPI2:   return "SPI2";
        case PCH_DEVFN_EMMC:    return "EMMC";
        case PCH_DEVFN_SDCARD:  return "SDXC";
        case PCH_DEVFN_P2SB:    return "P2SB";
        case PCH_DEVFN_PMC:     return "PMC_";
        case PCH_DEVFN_HDA:     return "HDAS";
        case PCH_DEVFN_SMBUS:   return "SBUS";
        case PCH_DEVFN_SPI:     return "FSPI";
        case PCH_DEVFN_GBE:     return "IGBE";
        case PCH_DEVFN_TRACEHUB:return "THUB";
        }
 
        return NULL;
}
#endif
 
/* SoC routine to fill GPIO PM mask and value for GPIO_MISCCFG register */
static void soc_fill_gpio_pm_configuration(void)
{
        uint8_t value[TOTAL_GPIO_COMM];
        const config_t *config = config_of_soc();
 
        if (config->gpio_override_pm)
                memcpy(value, config->gpio_pm, sizeof(value));
        else
                memset(value, MISCCFG_GPIO_PM_CONFIG_BITS, sizeof(value));
 
        gpio_pm_configure(value, TOTAL_GPIO_COMM);
}
 
void soc_init_pre_device(void *chip_info)
{
        /* 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);
 
        /* Perform silicon specific init. */
        fsp_silicon_init();
 
         /* Display FIRMWARE_VERSION_INFO_HOB */
        fsp_display_fvi_version_hob();
 
        /* Restore GPIO IRQ polarities back to previous settings. */
        itss_restore_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END);
 
        soc_fill_gpio_pm_configuration();
}
 
static struct device_operations pci_domain_ops = {
        .read_resources   = &pci_domain_read_resources,
        .set_resources    = &pci_domain_set_resources,
        .scan_bus         = &pci_domain_scan_bus,
        #if CONFIG(HAVE_ACPI_TABLES)
        .acpi_name        = &soc_acpi_name,
        #endif
};
 
static struct device_operations cpu_bus_ops = {
        .read_resources   = noop_read_resources,
        .set_resources    = noop_set_resources,
        .acpi_fill_ssdt   = generate_cpu_entries,
};
 
static void soc_enable(struct device *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;
        else if (dev->path.type == DEVICE_PATH_GPIO)
                block_gpio_enable(dev);
}
 
struct chip_operations soc_intel_icelake_ops = {
        CHIP_NAME("Intel Icelake")
        .enable_dev     = &soc_enable,
        .init           = &soc_init_pre_device,
};