| /* 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); |
| } |