/* * This file is part of the coreboot project. * * Copyright (C) 2014 Google Inc. * Copyright (C) 2015-2019 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../chip.h" #define PCR_DMI_DMICTL 0x2234 #define PCR_DMI_DMICTL_SRLOCK (1 << 31) #define PCR_DMI_ACPIBA 0x27B4 #define PCR_DMI_ACPIBDID 0x27B8 #define PCR_DMI_PMBASEA 0x27AC #define PCR_DMI_PMBASEC 0x27B0 void bootblock_pch_early_init(void) { fast_spi_early_init(SPI_BASE_ADDRESS); p2sb_enable_bar(); p2sb_configure_hpet(); } static void soc_config_acpibase(void) { uint32_t reg32; /* Disable ABASE in PMC Device first before changing Base Address */ reg32 = pci_read_config32(PCH_DEV_PMC, ACTL); pci_write_config32(PCH_DEV_PMC, ACTL, reg32 & ~ACPI_EN); /* Program ACPI Base */ pci_write_config32(PCH_DEV_PMC, ABASE, ACPI_BASE_ADDRESS); /* Enable ACPI in PMC */ pci_write_config32(PCH_DEV_PMC, ACTL, reg32 | ACPI_EN); /* * Program "ACPI Base Address" PCR[DMI] + 27B4h[23:18, 15:2, 0] * to [0x3F, PMC PCI Offset 40h bit[15:2], 1] */ reg32 = ((0x3f << 18) | ACPI_BASE_ADDRESS | 1); pcr_write32(PID_DMI, PCR_DMI_ACPIBA, reg32); if (CONFIG(SKYLAKE_SOC_PCH_H)) pcr_write32(PID_DMI, PCR_DMI_ACPIBDID, 0x23a8); else pcr_write32(PID_DMI, PCR_DMI_ACPIBDID, 0x23a0); } static void soc_config_pwrmbase(void) { uint32_t reg32; /* Disable PWRMBASE in PMC Device first before changing Base address */ reg32 = pci_read_config32(PCH_DEV_PMC, ACTL); pci_write_config32(PCH_DEV_PMC, ACTL, reg32 & ~PWRM_EN); /* Program PWRM Base */ pci_write_config32(PCH_DEV_PMC, PWRMBASE, PCH_PWRM_BASE_ADDRESS); /* Enable PWRM in PMC */ pci_write_config32(PCH_DEV_PMC, ACTL, reg32 | PWRM_EN); /* * Program "PM Base Address Memory Range Base" PCR[DMI] + 27ACh[15:0] * to the same value programmed in PMC PCI Offset 48h bit[31:16], * this has an implication of making sure the PWRMBASE to be * 64KB aligned. * * Program "PM Base Address Memory Range Limit" PCR[DMI] + 27ACh[31:16] * to the value programmed in PMC PCI Offset 48h bit[31:16], this has an * implication of making sure the memory allocated to PWRMBASE to be * 64KB in size. */ pcr_write32(PID_DMI, PCR_DMI_PMBASEA, ((PCH_PWRM_BASE_ADDRESS & 0xFFFF0000) | (PCH_PWRM_BASE_ADDRESS >> 16))); if (CONFIG(SKYLAKE_SOC_PCH_H)) pcr_write32(PID_DMI, PCR_DMI_PMBASEC, 0x800023a8); else pcr_write32(PID_DMI, PCR_DMI_PMBASEC, 0x800023a0); } static int pch_check_decode_enable(void) { uint32_t dmi_control; /* * This cycle decoding is only allowed to set when * DMICTL.SRLOCK is 0. */ dmi_control = pcr_read32(PID_DMI, PCR_DMI_DMICTL); if (dmi_control & PCR_DMI_DMICTL_SRLOCK) return -1; return 0; } void pch_early_iorange_init(void) { uint16_t io_enables = LPC_IOE_SUPERIO_2E_2F | LPC_IOE_KBC_60_64 | LPC_IOE_EC_62_66; /* IO Decode Range */ if (CONFIG(DRIVERS_UART_8250IO)) lpc_io_setup_comm_a_b(); /* IO Decode Enable */ if (pch_check_decode_enable() == 0) { io_enables = lpc_enable_fixed_io_ranges(io_enables); /* * As per PCH BWG 2.5.1.6. * Set LPC IO Enables PCR[DMI] + 2774h [15:0] to the same * value programmed in LPC PCI offset 82h. */ pcr_write16(PID_DMI, PCR_DMI_LPCIOE, io_enables); /* * As per PCH BWG 2.5.1.5. * Set LPC IO Decode Ranges PCR[DMI] + 2770h [15:0] to the same * value programmed in LPC PCI offset 80h. */ pcr_write16(PID_DMI, PCR_DMI_LPCIOD, lpc_get_fixed_io_decode()); } /* Program generic IO Decode Range */ pch_enable_lpc(); } void bootblock_pch_init(void) { /* * Enabling ABASE for accessing PM1_STS, PM1_EN, PM1_CNT, * GPE0_STS, GPE0_EN registers. */ soc_config_acpibase(); /* * Enabling PWRM Base for accessing * Global Reset Cause Register. */ soc_config_pwrmbase(); /* Set up GPE configuration */ pmc_gpe_init(); enable_rtc_upper_bank(); /* initialize Heci interface */ heci_init(HECI1_BASE_ADDRESS); }