/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007-2009 coresystems GmbH
 * Copyright (C) 2010 Joseph Smith <joe@settoplinux.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; version 2 of
 * the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 * MA 02110-1301 USA
 */

#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <string.h>
#include <cpu/cpu.h>
#include <cpu/x86/mtrr.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/lapic.h>
#include <cpu/intel/microcode.h>
#include <cpu/x86/cache.h>
#include <usbdebug_direct.h>

static const uint32_t microcode_updates[] = {
	#include "microcode-737-MU16b11c.h"
	#include "microcode-738-MU16b11d.h"
	#include "microcode-875-MU16b401.h"
	#include "microcode-885-MU16b402.h"
	/*  Dummy terminator  */
        0x0, 0x0, 0x0, 0x0,
        0x0, 0x0, 0x0, 0x0,
        0x0, 0x0, 0x0, 0x0,
        0x0, 0x0, 0x0, 0x0,
};

static inline void strcpy(char *dst, char *src)
{
	while (*src) *dst++ = *src++;
}

static void fill_processor_name(char *processor_name)
{
	struct cpuid_result regs;
	char temp_processor_name[49];
	char *processor_name_start;
	unsigned int *name_as_ints = (unsigned int *)temp_processor_name;
	int i;

	for (i=0; i<3; i++) {
		regs = cpuid(0x80000002 + i);
		name_as_ints[i*4 + 0] = regs.eax;
		name_as_ints[i*4 + 1] = regs.ebx;
		name_as_ints[i*4 + 2] = regs.ecx;
		name_as_ints[i*4 + 3] = regs.edx;
	}

	temp_processor_name[48] = 0;

	/* Skip leading spaces */
	processor_name_start = temp_processor_name;
	while (*processor_name_start == ' ')
		processor_name_start++;

	memset(processor_name, 0, 49);
	strcpy(processor_name, processor_name_start);
}

#if CONFIG_USBDEBUG_DIRECT
static unsigned ehci_debug_addr;
#endif

static void model_6bx_init(device_t cpu)
{
	char processor_name[49];

	/* Turn on caching if we haven't already */
	x86_enable_cache();

	/* Update the microcode */
	intel_update_microcode(microcode_updates);

	/* Print processor name */
	fill_processor_name(processor_name);
	printk(BIOS_INFO, "CPU: %s.\n", processor_name);

#if CONFIG_USBDEBUG_DIRECT
	// Is this caution really needed?
	if(!ehci_debug_addr)
		ehci_debug_addr = get_ehci_debug();
	set_ehci_debug(0);
#endif

	/* Setup MTRRs */
	x86_setup_mtrrs(36);
	x86_mtrr_check();

#if CONFIG_USBDEBUG_DIRECT
	set_ehci_debug(ehci_debug_addr);
#endif

	/* Enable the local cpu apics */
	setup_lapic();
}

static struct device_operations cpu_dev_ops = {
	.init     = model_6bx_init,
};

static struct cpu_device_id cpu_table[] = {
	{ X86_VENDOR_INTEL, 0x06B1 },
	{ X86_VENDOR_INTEL, 0x06B4 }, /* Low Voltage PIII Micro-FCBGA Socket 479 */
	{ 0, 0 },
};

static const struct cpu_driver driver __cpu_driver = {
	.ops      = &cpu_dev_ops,
	.id_table = cpu_table,
};