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/*
* This file is part of the coreboot project.
*
* Copyright 2017 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 <types.h>
#include <arch/io.h>
#include <amdblocks/acpimmio_map.h>
#include <amdblocks/acpimmio.h>
void enable_acpimmio_decode(void)
{
uint32_t dw;
dw = pm_io_read32(ACPIMMIO_DECODE_REGISTER);
dw |= ACPIMMIO_DECODE_EN;
pm_io_write32(ACPIMMIO_DECODE_REGISTER, dw);
}
/* PM registers are accessed a byte at a time via CD6/CD7 */
uint8_t pm_io_read8(uint8_t reg)
{
outb(reg, PM_INDEX);
return inb(PM_DATA);
}
uint16_t pm_io_read16(uint8_t reg)
{
return (pm_io_read8(reg + sizeof(uint8_t)) << 8) | pm_io_read8(reg);
}
uint32_t pm_io_read32(uint8_t reg)
{
return (pm_io_read16(reg + sizeof(uint16_t)) << 16) | pm_io_read16(reg);
}
void pm_io_write8(uint8_t reg, uint8_t value)
{
outb(reg, PM_INDEX);
outb(value, PM_DATA);
}
void pm_io_write16(uint8_t reg, uint16_t value)
{
pm_io_write8(reg, value & 0xff);
value >>= 8;
pm_io_write8(reg + sizeof(uint8_t), value & 0xff);
}
void pm_io_write32(uint8_t reg, uint32_t value)
{
pm_io_write16(reg, value & 0xffff);
value >>= 16;
pm_io_write16(reg + sizeof(uint16_t), value & 0xffff);
}
uint16_t biosram_read16(uint8_t reg) /* Must be 1 byte at a time */
{
return (biosram_read8(reg + sizeof(uint8_t)) << 8 | biosram_read8(reg));
}
uint32_t biosram_read32(uint8_t reg)
{
uint32_t value = biosram_read16(reg + sizeof(uint16_t)) << 16;
return value | biosram_read16(reg);
}
void biosram_write16(uint8_t reg, uint16_t value)
{
biosram_write8(reg, value & 0xff);
value >>= 8;
biosram_write8(reg + sizeof(uint8_t), value & 0xff);
}
void biosram_write32(uint8_t reg, uint32_t value)
{
biosram_write16(reg, value & 0xffff);
value >>= 16;
biosram_write16(reg + sizeof(uint16_t), value & 0xffff);
}
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