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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 <stdlib.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <southbridge/amd/sb800/sb800.h>
#include <southbridge/amd/cimx/sb800/SBPLATFORM.h>
#include <vendorcode/amd/cimx/sb800/OEM.h> /* SMBUS0_BASE_ADDRESS */
#include <southbridge/amd/cimx/sb800/gpio_oem.h>
#include "mainboard/lippert/frontrunner-af/sema.h"
static void init(struct device *dev)
{
volatile u8 *spi_base; // base addr of Hudson's SPI host controller
printk(BIOS_DEBUG, CONFIG_MAINBOARD_PART_NUMBER " ENTER %s\n", __func__);
/* Init Hudson GPIOs. */
printk(BIOS_DEBUG, "Init FCH GPIOs @ 0x%08x\n", ACPI_MMIO_BASE+GPIO_BASE);
FCH_IOMUX(50) = 2; // GPIO50: FCH_ARST#_GATE resets stuck PCIe devices
FCH_GPIO (50) = 0xC0; // = output set to 1 as it's never needed
FCH_IOMUX(197) = 2; // GPIO197: BIOS_DEFAULTS#
FCH_GPIO (197) = 0x28; // = input, disable int. pull-up
FCH_IOMUX(56) = 1; // GPIO58-56: REV_ID2-0
FCH_GPIO (56) = 0x28; // = inputs, disable int. pull-ups
FCH_IOMUX(57) = 1;
FCH_GPIO (57) = 0x28;
FCH_IOMUX(58) = 1;
FCH_GPIO (58) = 0x28;
FCH_IOMUX(187) = 2; // GPIO187,188,166,GPO160: GPO0-3 on COM Express connector
FCH_GPIO (187) = 0x08; // = outputs, disable PUs, default to 0
FCH_IOMUX(188) = 2;
FCH_GPIO (188) = 0x08;
FCH_IOMUX(166) = 2;
FCH_GPIO (166) = 0x08;
// needed to make GPO160 work (Hudson Register Reference section 2.3.6.1)
FCH_PMIO(0xDC) &= ~0x80; FCH_PMIO(0xE6) = (FCH_PMIO(0xE6) & ~0x02) | 0x01;
FCH_IOMUX(160) = 1;
FCH_GPIO (160) = 0x08;
FCH_IOMUX(189) = 1; // GPIO189-192: GPI0-3 on COM Express connector
FCH_IOMUX(190) = 1; // default to inputs with int. PU
FCH_IOMUX(191) = 1;
FCH_IOMUX(192) = 1;
if (!fch_gpio_state(197)) // just in case anyone cares
printk(BIOS_INFO, "BIOS_DEFAULTS jumper is present.\n");
printk(BIOS_INFO, "Board revision ID: %u\n",
fch_gpio_state(58)<<2 | fch_gpio_state(57)<<1 | fch_gpio_state(56));
/* Lower SPI speed from default 66 to 22 MHz for SST 25VF032B */
spi_base = (u8 *)((uintptr_t)pci_read_config32(pcidev_on_root(0x14, 3),
0xA0) & 0xFFFFFFE0);
spi_base[0x0D] = (spi_base[0x0D] & ~0x30) | 0x20; // NormSpeed in SPI_Cntrl1 register
/* Notify the SMC we're alive and kicking, or after a while it will
* effect a power cycle and switch to the alternate BIOS chip.
* Should be done as late as possible.
* Failure here does not matter if watchdog was already disabled,
* by configuration or previous boot, so ignore return value.
*/
sema_send_alive();
printk(BIOS_DEBUG, CONFIG_MAINBOARD_PART_NUMBER " EXIT %s\n", __func__);
}
/**********************************************
* Enable the dedicated functions of the board.
**********************************************/
static void mainboard_enable(struct device *dev)
{
printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n");
dev->ops->init = init;
/* 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);
/*
* 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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