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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <device/mmio.h>
#include <device/pci_ops.h>
#include "pch.h"
#include "cpu/intel/model_206ax/model_206ax.h"
#include <cpu/x86/msr.h>
static void write8p(uintptr_t addr, uint8_t val)
{
write8((uint8_t *)addr, val);
}
static void write16p(uintptr_t addr, uint16_t val)
{
write16((uint16_t *)addr, val);
}
static uint16_t read16p(uintptr_t addr)
{
return read16((uint16_t *)addr);
}
/* Temporary address for the thermal BAR */
#define TBARB_TEMP 0x40000000
/* 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)
{
const pci_devfn_t dev = PCH_THERMAL_DEV;
/* Program address for temporary BAR */
pci_write_config32(dev, 0x40, TBARB_TEMP);
pci_write_config32(dev, 0x44, 0x0);
/* Activate temporary BAR */
pci_or_config32(dev, 0x40, 5);
write16p(TBARB_TEMP + 0x04, 0x3a2b);
write8p(TBARB_TEMP + 0x0c, 0xff);
write8p(TBARB_TEMP + 0x0d, 0x00);
write8p(TBARB_TEMP + 0x0e, 0x40);
write8p(TBARB_TEMP + 0x82, 0x00);
write8p(TBARB_TEMP + 0x01, 0xba);
/* Perform init */
/* Configure TJmax */
const msr_t msr = rdmsr(MSR_TEMPERATURE_TARGET);
write16p(TBARB_TEMP + 0x12, ((msr.lo >> 16) & 0xff) << 6);
/* Northbridge temperature slope and offset */
write16p(TBARB_TEMP + 0x16, 0x808c);
write16p(TBARB_TEMP + 0x14, 0xde87);
/* Enable thermal data reporting, processor, PCH and northbridge */
write16p(TBARB_TEMP + 0x1a, (read16p(TBARB_TEMP + 0x1a) & ~0xf) | 0x10f0);
/* Disable temporary BAR */
pci_and_config32(dev, 0x40, ~1);
pci_write_config32(dev, 0x40, 0);
RCBA32_AND_OR(0x38b0, 0xffff8003, 0x403c);
}
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