src/soc/amd/stoneyridge/imc.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2012 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.
 */

#define __SIMPLE_DEVICE__

#include <amdblocks/agesawrapper.h>
#include <soc/imc.h>
#include <arch/io.h>
#include <device/device.h>
#include <delay.h>

#define VACPI_MMIO_VBASE ((u8 *)ACPI_MMIO_BASE)

void imc_reg_init(void)
{
	u8 reg8;
	/* Init Power Management Block 2 (PM2) Registers.
	 * Check BKDG for AMD Family 16h for details. */
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x00), 0x06);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x01), 0x06);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x02), 0xf7);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x03), 0xff);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x04), 0xff);

	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x10), 0x06);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x11), 0x06);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x12), 0xf7);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x13), 0xff);
	write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x14), 0xff);

	reg8 = pci_read_config8(PCI_DEV(0, 0x18, 0x3), 0x1e4);
	reg8 &= 0x8f;
	reg8 |= 0x10;
	pci_write_config8(PCI_DEV(0, 0x18, 0x3), 0x1e4, reg8);
}

void enable_imc_thermal_zone(void)
{
	AMD_CONFIG_PARAMS StdHeader;
	UINT8 FunNum;
	UINT8 regs[10];
	int i;

	regs[0] = 0;
	regs[1] = 0;
	FunNum = Fun_80;
	for (i = 0 ; i <= 1 ; i++)
		WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
	WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);
	WaitForEcLDN9MailboxCmdAck(&StdHeader);

	for (i = 2 ; i < ARRAY_SIZE(regs) ; i++)
		ReadECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);

	/* enable thermal zone 0 */
	regs[2] |= 1;
	regs[0] = 0;
	regs[1] = 0;
	FunNum = Fun_81;
	for (i = 0 ; i < ARRAY_SIZE(regs) ; i++)
		WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
	WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);
	WaitForEcLDN9MailboxCmdAck(&StdHeader);
}

void imc_sleep(void)
{
	ImcSleep(NULL);
}

void imc_wakeup(void)
{
	ImcWakeup(NULL);
}