| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Google Inc. |
| * Copyright (C) 2017 Intel Corporation. |
| * |
| * 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. |
| * |
| * 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 <device/device.h> |
| #include <intelblocks/fast_spi.h> |
| #include <intelblocks/gspi.h> |
| #include <intelblocks/lpc_lib.h> |
| #include <intelblocks/pcr.h> |
| #include <intelblocks/rtc.h> |
| #include <intelblocks/pmclib.h> |
| #include <intelblocks/smbus.h> |
| #include <soc/bootblock.h> |
| #include <soc/iomap.h> |
| #include <soc/lpc.h> |
| #include <soc/p2sb.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pcr_ids.h> |
| #include <soc/pm.h> |
| #include <soc/smbus.h> |
| |
| #define PCR_PSF3_TO_SHDW_PMC_REG_BASE 0x1400 |
| #define PCR_PSFX_TO_SHDW_BAR0 0 |
| #define PCR_PSFX_TO_SHDW_BAR1 0x4 |
| #define PCR_PSFX_TO_SHDW_BAR2 0x8 |
| #define PCR_PSFX_TO_SHDW_BAR3 0xC |
| #define PCR_PSFX_TO_SHDW_BAR4 0x10 |
| #define PCR_PSFX_TO_SHDW_PCIEN_IOEN 0x01 |
| #define PCR_PSFX_T0_SHDW_PCIEN 0x1C |
| |
| #define PCR_DMI_ACPIBA 0x27B4 |
| #define PCR_DMI_ACPIBDID 0x27B8 |
| #define PCR_DMI_PMBASEA 0x27AC |
| #define PCR_DMI_PMBASEC 0x27B0 |
| #define PCR_DMI_TCOBASE 0x2778 |
| #define TCOEN (1 << 1) /* Enable TCO I/O range decode. */ |
| |
| #define PCR_DMI_LPCIOD 0x2770 |
| #define PCR_DMI_LPCIOE 0x2774 |
| |
| static void enable_p2sbbar(void) |
| { |
| device_t dev = PCH_DEV_P2SB; |
| |
| /* Enable PCR Base address in PCH */ |
| pci_write_config32(dev, PCI_BASE_ADDRESS_0, CONFIG_PCR_BASE_ADDRESS); |
| |
| /* Enable P2SB MSE */ |
| pci_write_config8(dev, PCI_COMMAND, |
| PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); |
| /* |
| * Enable decoding for HPET memory address range. |
| * HPTC_OFFSET(0x60) bit 7, when set the P2SB will decode |
| * the High Performance Timer memory address range |
| * selected by bits 1:0 |
| */ |
| pci_write_config8(dev, HPTC_OFFSET, HPTC_ADDR_ENABLE_BIT); |
| } |
| |
| static void soc_config_pwrmbase(void) |
| { |
| uint32_t reg32; |
| |
| /* Assign Resources to PWRMBASE */ |
| /* Clear BIT 1-2 Command Register */ |
| reg32 = pci_read_config32(PCH_DEV_PMC, PCI_COMMAND); |
| reg32 &= ~(PCI_COMMAND_MEMORY); |
| pci_write_config32(PCH_DEV_PMC, PCI_COMMAND, reg32); |
| |
| /* Program PWRM Base */ |
| pci_write_config32(PCH_DEV_PMC, PWRMBASE, PCH_PWRM_BASE_ADDRESS); |
| |
| /* Enable Bus Master and MMIO Space */ |
| reg32 = pci_read_config32(PCH_DEV_PMC, PCI_COMMAND); |
| reg32 |= PCI_COMMAND_MEMORY; |
| pci_write_config32(PCH_DEV_PMC, PCI_COMMAND, reg32); |
| |
| /* Enable PWRM in PMC */ |
| reg32 = read32((void *)(PCH_PWRM_BASE_ADDRESS + ACTL)); |
| write32((void *)(PCH_PWRM_BASE_ADDRESS + ACTL), reg32 | PWRM_EN); |
| } |
| |
| void bootblock_pch_early_init(void) |
| { |
| fast_spi_early_init(SPI_BASE_ADDRESS); |
| gspi_early_bar_init(); |
| enable_p2sbbar(); |
| /* |
| * Enabling PWRM Base for accessing |
| * Global Reset Cause Register. |
| */ |
| soc_config_pwrmbase(); |
| } |
| |
| |
| static void soc_config_acpibase(void) |
| { |
| uint32_t pmc_reg_value; |
| |
| pmc_reg_value = pcr_read32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE + |
| PCR_PSFX_TO_SHDW_BAR4); |
| |
| if (pmc_reg_value != 0xFFFFFFFF) |
| { |
| /* Disable Io Space before changing the address */ |
| pcr_rmw32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE + |
| PCR_PSFX_T0_SHDW_PCIEN, |
| ~PCR_PSFX_TO_SHDW_PCIEN_IOEN, 0); |
| /* Program ABASE in PSF3 PMC space BAR4*/ |
| pcr_write32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE + |
| PCR_PSFX_TO_SHDW_BAR4, |
| ACPI_BASE_ADDRESS); |
| /* Enable IO Space */ |
| pcr_rmw32(PID_PSF3, PCR_PSF3_TO_SHDW_PMC_REG_BASE + |
| PCR_PSFX_T0_SHDW_PCIEN, |
| ~0, PCR_PSFX_TO_SHDW_PCIEN_IOEN); |
| } |
| } |
| |
| static void soc_config_tco(void) |
| { |
| uint32_t reg32; |
| uint16_t tcobase; |
| uint16_t tcocnt; |
| |
| /* Disable TCO in SMBUS Device first before changing Base Address */ |
| reg32 = pci_read_config32(PCH_DEV_SMBUS, TCOCTL); |
| reg32 &= ~TCO_BASE_EN; |
| pci_write_config32(PCH_DEV_SMBUS, TCOCTL, reg32); |
| |
| /* Program TCO Base */ |
| tcobase = TCO_BASE_ADDRESS; |
| pci_write_config32(PCH_DEV_SMBUS, TCOBASE, tcobase); |
| |
| /* Enable TCO in SMBUS */ |
| pci_write_config32(PCH_DEV_SMBUS, TCOCTL, reg32 | TCO_BASE_EN); |
| |
| /* |
| * Program "TCO Base Address" PCR[DMI] + 2778h[15:5, 1] |
| */ |
| pcr_write32(PID_DMI, PCR_DMI_TCOBASE, tcobase | TCOEN); |
| |
| /* Program TCO timer halt */ |
| tcocnt = inw(tcobase + TCO1_CNT); |
| tcocnt |= TCO_TMR_HLT; |
| outw(tcocnt, tcobase + TCO1_CNT); |
| } |
| |
| void pch_early_iorange_init(void) |
| { |
| uint16_t dec_rng, dec_en = 0; |
| |
| /* IO Decode Range */ |
| if (IS_ENABLED(CONFIG_DRIVERS_UART_8250IO) && |
| IS_ENABLED(CONFIG_UART_DEBUG)) { |
| dec_rng = COMA_RANGE | (COMB_RANGE << 4); |
| dec_en = COMA_LPC_EN | COMB_LPC_EN; |
| pci_write_config16(PCH_DEV_LPC, LPC_IO_DEC, dec_rng); |
| pcr_write16(PID_DMI, PCR_DMI_LPCIOD, dec_rng); |
| } |
| |
| /* IO Decode Enable */ |
| dec_en |= SE_LPC_EN | KBC_LPC_EN | MC1_LPC_EN | GAMEL_LPC_EN; |
| pci_write_config16(PCH_DEV_LPC, LPC_EN, dec_en); |
| pcr_write16(PID_DMI, PCR_DMI_LPCIOE, dec_en); |
| |
| /* Program generic IO Decode Range */ |
| pch_enable_lpc(); |
| } |
| |
| void pch_early_init(void) |
| { |
| /* |
| * Enabling ABASE for accessing PM1_STS, PM1_EN, PM1_CNT, |
| * GPE0_STS, GPE0_EN registers. |
| */ |
| soc_config_acpibase(); |
| |
| /* Programming TCO_BASE_ADDRESS and TCO Timer Halt */ |
| soc_config_tco(); |
| |
| /* Program SMBUS_BASE_ADDRESS and Enable it */ |
| smbus_common_init(); |
| |
| /* Set up GPE configuration */ |
| pmc_gpe_init(); |
| |
| enable_rtc_upper_bank(); |
| } |