blob: a5c63b617f1072e090c15343b3e6b84234bcccb2 [file] [log] [blame]
/*
* 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_206ax/model_206ax.h"
#include <cpu/x86/msr.h>
static void write8p(uintptr_t addr, uint32_t val)
{
write8((u8 *)addr, val);
}
static void write16p(uintptr_t addr, uint32_t val)
{
write16((u16 *)addr, val);
}
static uint16_t read16p (uintptr_t addr)
{
return read16((u16 *)addr);
}
/* 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);
write16p (0x40000004, 0x3a2b);
write8p (0x4000000c, 0xff);
write8p (0x4000000d, 0x00);
write8p (0x4000000e, 0x40);
write8p (0x40000082, 0x00);
write8p (0x40000001, 0xba);
/* Perform init. */
/* Configure TJmax. */
msr = rdmsr(MSR_TEMPERATURE_TARGET);
write16p(0x40000012, ((msr.lo >> 16) & 0xff) << 6);
/* Northbridge temperature slope and offset. */
write16p(0x40000016, 0x808c);
write16p (0x40000014, 0xde87);
/* Enable thermal data reporting, processor, PCH and northbridge. */
write16p(0x4000001a, (read16p(0x4000001a) & ~0xf) | 0x10f0);
/* Disable temporary BAR. */
pci_write_config32(dev, 0x40,
pci_read_config32(dev, 0x40) & ~1);
pci_write_config32(dev, 0x40, 0);
write32 (DEFAULT_RCBA + 0x38b0,
(read32 (DEFAULT_RCBA + 0x38b0) & 0xffff8003) | 0x403c);
}