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/*
* 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.
*/
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <southbridge/amd/sb800/sb800.h>
#include <southbridge/amd/cimx/sb800/SBPLATFORM.h> /* Platform Specific Definitions */
/**
* Southstation using SB GPIO 17/18 to control the Red/Green LED
* These two LEDs can be used to show the OS booting status.
*/
static void southstation_led_init(void)
{
#define GPIO_FUNCTION 2 //GPIO function
#define SB_GPIO_REG17 17 //Red Light
#define SB_GPIO_REG18 18 //Green Light
/* multi-function pins switch to GPIO0-35 */
RWMEM(ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REGEA, AccWidthUint8, ~BIT0, 1);
/* select IOMux to function2, corresponds to GPIO */
RWMEM(ACPI_MMIO_BASE + IOMUX_BASE + SB_GPIO_REG17, AccWidthUint8, ~(BIT0 | BIT1), GPIO_FUNCTION);
RWMEM(ACPI_MMIO_BASE + IOMUX_BASE + SB_GPIO_REG18, AccWidthUint8, ~(BIT0 | BIT1), GPIO_FUNCTION);
/* Lighting test */
RWMEM(ACPI_MMIO_BASE + GPIO_BASE + SB_GPIO_REG17, AccWidthUint8, ~(0xFF), 0x08); //output high
RWMEM(ACPI_MMIO_BASE + GPIO_BASE + SB_GPIO_REG18, AccWidthUint8, ~(0xFF), 0x08);
mdelay(100);
RWMEM(ACPI_MMIO_BASE + GPIO_BASE + SB_GPIO_REG17, AccWidthUint8, ~(0xFF), 0x48); //output low
RWMEM(ACPI_MMIO_BASE + GPIO_BASE + SB_GPIO_REG18, AccWidthUint8, ~(0xFF), 0x48);
}
/**********************************************
* Enable the dedicated functions of the board.
**********************************************/
static void mainboard_enable(struct device *dev)
{
printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n");
southstation_led_init();
/*
* Initialize ASF registers to an arbitrary address because someone
* long ago set things up this way inside the SPD read code. The
* SPD read code has been made generic and moved out of the board
* directory, so the ASF init is being done here.
*/
pm_iowrite(0x29, 0x80);
pm_iowrite(0x28, 0x61);
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
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