69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
|
/*
|
||
|
|
* This file is part of the coreboot project.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2014 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.
|
||
|
|
*
|
||
|
|
* 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 <stdint.h>
|
||
|
|
#include <arch/io.h>
|
||
|
|
#include "SBPLATFORM.h"
|
||
|
|
#include <southbridge/amd/cimx/cimx_util.h>
|
||
|
|
#include "gpio_ftns.h"
|
||
|
|
|
||
|
|
u32 find_gpio_base(void)
|
||
|
|
{
|
||
|
|
u8 pm_index, pm_data;
|
||
|
|
u32 base_addr = 0;
|
||
|
|
|
||
|
|
/* Find the ACPImmioAddr base address */
|
||
|
|
for ( pm_index = 0x27; pm_index > 0x23; pm_index-- ) {
|
||
|
|
outb( pm_index, PM_INDEX );
|
||
|
|
pm_data = inb( PM_DATA );
|
||
|
|
base_addr <<= 8;
|
||
|
|
base_addr |= (u32)pm_data;
|
||
|
|
}
|
||
|
|
base_addr &= 0xFFFFF000;
|
||
|
|
return (base_addr);
|
||
|
|
}
|
||
|
|
|
||
|
|
void configure_gpio(u32 base_addr, u32 gpio, u8 iomux_ftn, u8 setting)
|
||
|
|
{
|
||
|
|
u8 bdata;
|
||
|
|
u8 *memptr;
|
||
|
|
|
||
|
|
memptr = (u8 *)(base_addr + IOMUX_OFFSET + gpio);
|
||
|
|
*memptr = iomux_ftn;
|
||
|
|
|
||
|
|
memptr = (u8 *)(base_addr + GPIO_OFFSET + gpio);
|
||
|
|
bdata = *memptr;
|
||
|
|
bdata &= 0x07;
|
||
|
|
bdata |= setting; /* set direction and data value */
|
||
|
|
*memptr = bdata;
|
||
|
|
}
|
||
|
|
|
||
|
|
u8 read_gpio(u32 base_addr, u32 gpio)
|
||
|
|
{
|
||
|
|
u8 *memptr = (u8 *)(base_addr + GPIO_OFFSET + gpio);
|
||
|
|
return (*memptr & GPIO_DATA_IN) ? 1 : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int get_spd_offset(void)
|
||
|
|
{
|
||
|
|
u32 base_addr = find_gpio_base();
|
||
|
|
u8 spd_offset = read_gpio(base_addr, GPIO_16);
|
||
|
|
return spd_offset;
|
||
|
|
}
|