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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Advanced Micro Devices, Inc.
* Copyright (C) 2012 Rudolf Marek <r.marek@assembler.cz>
*
* 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 <bootblock_common.h>
#include <device/pnp_type.h>
#include <southbridge/amd/common/amd_defs.h>
#include <stdint.h>
#include <superio/ite/common/ite.h>
#include <superio/ite/it8728f/it8728f.h>
#include <superio/nuvoton/common/nuvoton.h>
#include <superio/nuvoton/nct6779d/nct6779d.h>
#define SB_MMIO_MISC32(x) *(volatile u32 *)(AMD_SB_ACPI_MMIO_ADDR + 0xE00 + (x))
static void sbxxx_enable_48mhzout(void)
{
/* most likely programming to 48MHz out signal */
u32 reg32;
reg32 = SB_MMIO_MISC32(0x28);
reg32 &= 0xffc7ffff;
reg32 |= 0x00100000;
SB_MMIO_MISC32(0x28) = reg32;
reg32 = SB_MMIO_MISC32(0x40);
reg32 &= ~0x80u;
SB_MMIO_MISC32(0x40) = reg32;
}
static void superio_init_m(void)
{
pnp_devfn_t uart = PNP_DEV(0x2e, IT8728F_SP1);
pnp_devfn_t gpio = PNP_DEV(0x2e, IT8728F_GPIO);
ite_kill_watchdog(gpio);
ite_enable_serial(uart, CONFIG_TTYS0_BASE);
ite_enable_3vsbsw(gpio);
}
static void superio_init_m_pro(void)
{
pnp_devfn_t uart = PNP_DEV(0x2e, NCT6779D_SP1);
nuvoton_enable_serial(uart, CONFIG_TTYS0_BASE);
}
void bootblock_mainboard_early_init(void)
{
/* enable SIO clock */
sbxxx_enable_48mhzout();
if (CONFIG(BOARD_ASUS_F2A85_M_PRO))
superio_init_m_pro();
else
superio_init_m();
}
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