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#include <console/console.h>
#include <cpu/cpu.h>
#include <cpu/x86/lapic_def.h>
#include <arch/io.h>
#include <arch/ioapic.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci.h>
#include <stdlib.h>
#include <string.h>
#include <delay.h>
#include <smbios.h>
#include <cbmem.h>
#include "fw_cfg.h"
#include "memory.c"
static void cpu_pci_domain_set_resources(device_t dev)
{
assign_resources(dev->link_list);
}
static void cpu_pci_domain_read_resources(struct device *dev)
{
struct resource *res;
unsigned long tomk = 0;
int idx = 10;
pci_domain_read_resources(dev);
tomk = qemu_get_memory_size();
printk(BIOS_DEBUG, "Detected %lu MiB RAM.\n", tomk / 1024);
/* Report the memory regions. */
idx = 10;
ram_resource(dev, idx++, 0, 640);
ram_resource(dev, idx++, 768, tomk - 768);
/* Leave some space for ACPI, PIRQ and MP tables */
high_tables_base = (tomk * 1024) - HIGH_MEMORY_SIZE;
high_tables_size = HIGH_MEMORY_SIZE;
/* Reserve space for the IOAPIC. This should be in the Southbridge,
* but I couldn't tell which device to put it in. */
res = new_resource(dev, 2);
res->base = IO_APIC_ADDR;
res->size = 0x100000UL;
res->limit = 0xffffffffUL;
res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED |
IORESOURCE_ASSIGNED;
/* Reserve space for the LAPIC. There's one in every processor, but
* the space only needs to be reserved once, so we do it here. */
res = new_resource(dev, 3);
res->base = LOCAL_APIC_ADDR;
res->size = 0x10000UL;
res->limit = 0xffffffffUL;
res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED |
IORESOURCE_ASSIGNED;
}
#if CONFIG_GENERATE_SMBIOS_TABLES
static int qemu_get_smbios_data16(int handle, unsigned long *current)
{
struct smbios_type16 *t = (struct smbios_type16 *)*current;
int len = sizeof(struct smbios_type16);
memset(t, 0, sizeof(struct smbios_type16));
t->type = SMBIOS_PHYS_MEMORY_ARRAY;
t->handle = handle;
t->length = len - 2;
t->location = 3; /* Location: System Board */
t->use = 3; /* System memory */
t->memory_error_correction = 3; /* No error correction */
t->maximum_capacity = qemu_get_memory_size();
*current += len;
return len;
}
static int qemu_get_smbios_data17(int handle, int parent_handle, unsigned long *current)
{
struct smbios_type17 *t = (struct smbios_type17 *)*current;
int len;
memset(t, 0, sizeof(struct smbios_type17));
t->type = SMBIOS_MEMORY_DEVICE;
t->handle = handle;
t->phys_memory_array_handle = parent_handle;
t->length = sizeof(struct smbios_type17) - 2;
t->size = qemu_get_memory_size() / 1024;
t->data_width = 64;
t->total_width = 64;
t->form_factor = 9; /* DIMM */
t->device_locator = smbios_add_string(t->eos, "Virtual");
t->memory_type = 0x12; /* DDR */
t->type_detail = 0x80; /* Synchronous */
t->speed = 200;
t->clock_speed = 200;
t->manufacturer = smbios_add_string(t->eos, CONFIG_MAINBOARD_VENDOR);
len = t->length + smbios_string_table_len(t->eos);
*current += len;
return len;
}
static int qemu_get_smbios_data(device_t dev, int *handle, unsigned long *current)
{
int len;
len = qemu_get_smbios_data16(*handle, current);
len += qemu_get_smbios_data17(*handle+1, *handle, current);
*handle += 2;
return len;
}
#endif
static struct device_operations pci_domain_ops = {
.read_resources = cpu_pci_domain_read_resources,
.set_resources = cpu_pci_domain_set_resources,
.enable_resources = NULL,
.init = NULL,
.scan_bus = pci_domain_scan_bus,
#if CONFIG_GENERATE_SMBIOS_TABLES
.get_smbios_data = qemu_get_smbios_data,
#endif
};
static void cpu_bus_init(device_t dev)
{
initialize_cpus(dev->link_list);
}
static unsigned int cpu_bus_scan(device_t bus, unsigned int max)
{
int max_cpus = fw_cfg_max_cpus();
device_t cpu;
int i;
if (max_cpus < 0)
return 0;
/*
* TODO: This only handles the simple "qemu -smp $nr" case
* correctly. qemu also allows to specify the number of
* cores, threads & sockets.
*/
printk(BIOS_INFO, "QEMU: max_cpus is %d\n", max_cpus);
for (i = 0; i < max_cpus; i++) {
cpu = add_cpu_device(bus->link_list, i, 1);
if (cpu)
set_cpu_topology(cpu, 1, 0, i, 0);
}
return max_cpus;
}
static void cpu_bus_noop(device_t dev)
{
}
static struct device_operations cpu_bus_ops = {
.read_resources = cpu_bus_noop,
.set_resources = cpu_bus_noop,
.enable_resources = cpu_bus_noop,
.init = cpu_bus_init,
.scan_bus = cpu_bus_scan,
};
static void northbridge_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;
pci_set_method(dev);
}
else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) {
dev->ops = &cpu_bus_ops;
}
}
struct chip_operations mainboard_emulation_qemu_i440fx_ops = {
CHIP_NAME("QEMU Northbridge i440fx")
.enable_dev = northbridge_enable,
};
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