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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Vladimir Serbinenko
*
* 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, or (at your option) any later version.
*
* 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 <arch/io.h>
#include "pch.h"
#include "cpu/intel/model_2065x/model_2065x.h"
#include <cpu/x86/msr.h>
/* Early thermal init, must be done prior to giving ME its memory
which is done at the end of raminit. */
void early_thermal_init(void)
{
pci_devfn_t dev;
msr_t msr;
dev = PCI_DEV(0x0, 0x1f, 0x6);
/* Program address for temporary BAR. */
pci_write_config32(dev, 0x40, 0x40000000);
pci_write_config32(dev, 0x44, 0x0);
/* Activate temporary BAR. */
pci_write_config32(dev, 0x40,
pci_read_config32(dev, 0x40) | 5);
/* Perform init. */
/* Configure TJmax. */
msr = rdmsr(MSR_TEMPERATURE_TARGET);
write16((u16 *)0x40000012, ((msr.lo >> 16) & 0xff) << 6);
/* Northbridge temperature slope and offset. */
write16((u16 *)0x40000016, 0x7746);
/* Enable thermal data reporting, processor, PCH and northbridge. */
write16((u16 *)0x4000001a,
(read16((u16 *)0x4000001a) & ~0xf) | 0x10f0);
/* Disable temporary BAR. */
pci_write_config32(dev, 0x40,
pci_read_config32(dev, 0x40) & ~1);
pci_write_config32(dev, 0x40, 0);
}
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