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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <acpi/acpi.h>
#include <console/console.h>
#include <device/pci_ops.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci.h>
#include <cpu/cpu.h>
#include "e7505.h"
unsigned long acpi_fill_mcfg(unsigned long current)
{
/* Just a dummy */
return current;
}
static void mch_domain_read_resources(struct device *dev)
{
int idx;
unsigned long tomk, tolmk;
unsigned long remapbasek, remaplimitk;
const unsigned long basek_4G = 4 * (GiB / KiB);
struct device *mc_dev;
pci_domain_read_resources(dev);
mc_dev = pcidev_on_root(0, 0);
if (!mc_dev)
die("Could not find MCH device\n");
tolmk = pci_read_config16(mc_dev, TOLM) >> 11;
tolmk <<= 17;
tomk = pci_read_config8(mc_dev, DRB_ROW_7);
tomk <<= 16;
/* Remapped region with a 64 MiB granularity in register
definition. Limit is inclusive, so add one. */
remapbasek = pci_read_config16(mc_dev, REMAPBASE) & 0x3ff;
remapbasek <<= 16;
remaplimitk = pci_read_config16(mc_dev, REMAPLIMIT) & 0x3ff;
remaplimitk += 1;
remaplimitk <<= 16;
/* Report the memory regions */
idx = 10;
ram_resource(dev, idx++, 0, 640);
ram_resource(dev, idx++, 768, tolmk - 768);
if (tomk > basek_4G)
ram_resource(dev, idx++, basek_4G, tomk - basek_4G);
if (remaplimitk > remapbasek)
ram_resource(dev, idx++, remapbasek, remaplimitk - remapbasek);
}
static void mch_domain_set_resources(struct device *dev)
{
assign_resources(dev->link_list);
}
static struct pci_operations intel_pci_ops = {
.set_subsystem = pci_dev_set_subsystem,
};
static struct device_operations pci_domain_ops = {
.read_resources = mch_domain_read_resources,
.set_resources = mch_domain_set_resources,
.scan_bus = pci_domain_scan_bus,
.ops_pci = &intel_pci_ops,
};
static void cpu_bus_init(struct device *dev)
{
initialize_cpus(dev->link_list);
}
static struct device_operations cpu_bus_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.init = cpu_bus_init,
};
static void enable_dev(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;
}
}
struct chip_operations northbridge_intel_e7505_ops = {
CHIP_NAME("Intel E7505 Northbridge")
.enable_dev = enable_dev,
};
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