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#include <console/console.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 <bitops.h>
#include "chip.h"
#include <delay.h>
#include <smbios.h>
#if CONFIG_WRITE_HIGH_TABLES==1
#include <cbmem.h>
#endif
#define CMOS_ADDR_PORT 0x70
#define CMOS_DATA_PORT 0x71
#define HIGH_RAM_ADDR 0x35
#define LOW_RAM_ADDR 0x34
static unsigned long qemu_get_memory_size(void)
{
unsigned long tomk;
outb (HIGH_RAM_ADDR, CMOS_ADDR_PORT);
tomk = ((unsigned long) inb(CMOS_DATA_PORT)) << 14;
outb (LOW_RAM_ADDR, CMOS_ADDR_PORT);
tomk |= ((unsigned long) inb(CMOS_DATA_PORT)) << 6;
tomk += 16 * 1024;
return tomk;
}
static void cpu_pci_domain_set_resources(device_t dev)
{
u32 pci_tolm = find_pci_tolm(dev->link_list);
unsigned long tomk = 0, tolmk;
int idx;
tomk = qemu_get_memory_size();
printk(BIOS_DEBUG, "Detected %lu Kbytes (%lu MiB) RAM.\n",
tomk, tomk / 1024);
/* Compute the top of Low memory */
tolmk = pci_tolm >> 10;
if (tolmk >= tomk) {
/* The PCI hole does not overlap the memory. */
tolmk = tomk;
}
/* Report the memory regions. */
idx = 10;
ram_resource(dev, idx++, 0, 640);
ram_resource(dev, idx++, 768, tolmk - 768);
#if CONFIG_WRITE_HIGH_TABLES==1
/* Leave some space for ACPI, PIRQ and MP tables */
high_tables_base = (tomk * 1024) - HIGH_MEMORY_SIZE;
high_tables_size = HIGH_MEMORY_SIZE;
#endif
assign_resources(dev->link_list);
}
static void cpu_pci_domain_read_resources(struct device *dev)
{
struct resource *res;
pci_domain_read_resources(dev);
/* 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 enable_dev(struct device *dev)
{
/* Set the operations if it is a special bus type */
if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) {
dev->ops = &pci_domain_ops;
pci_set_method(dev);
}
}
struct chip_operations mainboard_emulation_qemu_x86_ops = {
CHIP_NAME("QEMU Northbridge")
.enable_dev = enable_dev,
};
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