chip.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <drivers/i2c/designware/dw_i2c.h>
#include <soc/acpi.h>
#include <soc/cpu.h>
#include <soc/data_fabric.h>
#include <soc/iomap.h>
#include <soc/pci_devs.h>
#include <soc/southbridge.h>
#include "chip.h"
#include <fsp/api.h>
 
/* Supplied by i2c.c */
extern struct device_operations soc_amd_i2c_mmio_ops;
/* Supplied by uart.c */
extern struct device_operations picasso_uart_mmio_ops;
 
struct device_operations cpu_bus_ops = {
        .read_resources   = noop_read_resources,
        .set_resources    = noop_set_resources,
        .init             = mp_cpu_bus_init,
        .acpi_fill_ssdt   = generate_cpu_entries,
};
 
static 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;
 
        printk(BIOS_WARNING, "Unknown PCI device: dev: %d, fn: %d\n",
               PCI_SLOT(dev->path.pci.devfn), PCI_FUNC(dev->path.pci.devfn));
        return NULL;
};
 
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,
        .acpi_name        = soc_acpi_name,
};
 
static void set_mmio_dev_ops(struct device *dev)
{
        switch (dev->path.mmio.addr) {
        case APU_I2C2_BASE:
        case APU_I2C3_BASE:
        case APU_I2C4_BASE:
                dev->ops = &soc_amd_i2c_mmio_ops;
                break;
        case APU_UART0_BASE:
        case APU_UART1_BASE:
        case APU_UART2_BASE:
        case APU_UART3_BASE:
                dev->ops = &picasso_uart_mmio_ops;
                break;
        }
}
 
static void enable_dev(struct device *dev)
{
        /* Set the operations if it is a special bus type */
        switch (dev->path.type) {
        case DEVICE_PATH_DOMAIN:
                dev->ops = &pci_domain_ops;
                break;
        case DEVICE_PATH_CPU_CLUSTER:
                dev->ops = &cpu_bus_ops;
                break;
        case DEVICE_PATH_MMIO:
                set_mmio_dev_ops(dev);
                break;
        default:
                break;
        }
}
 
static void soc_init(void *chip_info)
{
        default_dev_ops_root.write_acpi_tables = agesa_write_acpi_tables;
 
        fsp_silicon_init();
 
        data_fabric_set_mmio_np();
        fch_init(chip_info);
}
 
static void soc_final(void *chip_info)
{
        fch_final(chip_info);
}
 
struct chip_operations soc_amd_picasso_ops = {
        CHIP_NAME("AMD Picasso SOC")
        .enable_dev = enable_dev,
        .init = soc_init,
        .final = soc_final
};