diff options
Diffstat (limited to 'src/southbridge/intel/bd82x6x/early_thermal.c')
| -rw-r--r-- | src/southbridge/intel/bd82x6x/early_thermal.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/early_thermal.c b/src/southbridge/intel/bd82x6x/early_thermal.c new file mode 100644 index 0000000000..02ec9a7436 --- /dev/null +++ b/src/southbridge/intel/bd82x6x/early_thermal.c @@ -0,0 +1,70 @@ +/* + * 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. + * + * 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 <arch/io.h> +#include "pch.h" +#include "cpu/intel/model_206ax/model_206ax.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) +{ + device_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); + + + write16 (0x40000004, 0x3a2b); + write8 (0x4000000c, 0xff); + write8 (0x4000000d, 0x00); + write8 (0x4000000e, 0x40); + write8 (0x40000082, 0x00); + write8 (0x40000001, 0xba); + + /* Perform init. */ + /* Configure TJmax. */ + msr = rdmsr(MSR_TEMPERATURE_TARGET); + write16(0x40000012, ((msr.lo >> 16) & 0xff) << 6); + /* Northbridge temperature slope and offset. */ + write16(0x40000016, 0x808c); + + write16 (0x40000014, 0xde87); + + /* Enable thermal data reporting, processor, PCH and northbridge. */ + write16(0x4000001a, (read16(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); +} |