coreboot-kgpe-d16/src/mainboard/advansus/a785e-i/mainboard.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 Advanced Micro Devices, Inc.
 *
 * 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 <arch/io.h>
#include <boot/tables.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/mtrr.h>
#include <device/pci_def.h>
#include "SBPLATFORM.h"
#include "chip.h"


u8 is_dev3_present(void);
void set_pcie_dereset(void);
void set_pcie_reset(void);
void enable_int_gfx(void);

/* GPIO6. */
void enable_int_gfx(void)
{
	volatile u8 *gpio_reg;

#ifdef UNUSED_CODE
	RWPMIO(SB_PMIOA_REGEA, AccWidthUint8, ~(BIT0), BIT0); /* Disable the PCIB */
	RWPMIO(SB_PMIOA_REGF6, AccWidthUint8, ~(BIT0), BIT0); /* Disable Gec */
#endif
	/* make sure the Acpi MMIO(fed80000) is accessible */
        RWPMIO(SB_PMIOA_REG24, AccWidthUint8, ~(BIT0), BIT0);

	gpio_reg = (volatile u8 *)ACPI_MMIO_BASE + 0xD00; /* IoMux Register */

	*(gpio_reg + 0x6) = 0x1; /* Int_vga_en */
	*(gpio_reg + 170) = 0x1; /* gpio_gate */

	gpio_reg = (volatile u8 *)ACPI_MMIO_BASE + 0x100; /* GPIO Registers */

	*(gpio_reg + 0x6) = 0x8;
	*(gpio_reg + 170) = 0x0;
}

void set_pcie_dereset()
{
}

void set_pcie_reset(void)
{
}

u8 is_dev3_present(void)
{
	return 0;
}


/*************************************************
* enable the dedicated function in A785E-I board.
* This function called early than rs780_enable.
*************************************************/
static void a785e_i_enable(device_t dev)
{
	/* Leave it for furture use. */
	/* struct mainboard_config *mainboard =
	   (struct mainboard_config *)dev->chip_info; */

	printk(BIOS_INFO, "Mainboard A785E-I Enable. dev=0x%p\n", dev);

	setup_uma_memory();

	set_pcie_dereset();
	enable_int_gfx();
}

int add_mainboard_resources(struct lb_memory *mem)
{
	/* UMA is removed from system memory in the northbridge code, but
	 * in some circumstances we want the memory mentioned as reserved.
 	 */
#if CONFIG_GFXUMA
	printk(BIOS_INFO, "uma_memory_start=0x%llx, uma_memory_size=0x%llx \n",
		    uma_memory_base, uma_memory_size);
	lb_add_memory_range(mem, LB_MEM_RESERVED, uma_memory_base,
			    uma_memory_size);
#endif
	return 0;
}

struct chip_operations mainboard_ops = {
	CHIP_NAME("ADVANSUS A785E-I Mainboard")
	.enable_dev = a785e_i_enable,
};