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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Advanced Micro Devices, Inc.
* Copyright (C) 2013 Sage Electronic Engineering, LLC
*
* 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 <arch/io.h>
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <southbridge/amd/sb800/sb800.h>
#include "SBPLATFORM.h"
/**********************************************
* Enable the dedicated functions of the board.
**********************************************/
static void mainboard_enable(struct device *dev)
{
printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n");
/* enable GPP CLK0 thru CLK1 */
/* disable GPP CLK2 thru SLT_GFX_CLK */
u8 *misc_mem_clk_cntrl = (u8 *)(ACPI_MMIO_BASE + MISC_BASE);
write8(misc_mem_clk_cntrl + 0, 0xFF);
write8(misc_mem_clk_cntrl + 1, 0x00);
write8(misc_mem_clk_cntrl + 2, 0x00);
write8(misc_mem_clk_cntrl + 3, 0x00);
write8(misc_mem_clk_cntrl + 4, 0x00);
/*
* Force the onboard SATA port to GEN2 speed.
* The offboard SATA port can remain at GEN3.
*/
RWMEM(ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REGDA, AccWidthUint8, 0xFB, 0x04);
}
static void mainboard_final(void *chip_info)
{
struct device *ahci_dev;
uintptr_t ABAR;
u8 *memptr;
ahci_dev = dev_find_slot(0, PCI_DEVFN(0x11, 0));
ABAR = pci_read_config32(ahci_dev, 0x24);
ABAR &= 0xFFFFFC00;
memptr = (u8 *)(ABAR + 0x100 + 0x80 + 0x2C); /* we're on the 2nd port */
*memptr = 0x21; /* force to GEN2 and start re-negotiate */
mdelay (1);
*memptr = 0x20;
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
.final = mainboard_final,
};
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