| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <device/mmio.h> |
| #include <device/device.h> |
| #include <device/pci_ops.h> |
| #include <intelblocks/dmi.h> |
| #include <intelblocks/fast_spi.h> |
| #include <intelblocks/gspi.h> |
| #include <intelblocks/lpc_lib.h> |
| #include <intelblocks/p2sb.h> |
| #include <intelblocks/pcr.h> |
| #include <intelblocks/pmclib.h> |
| #include <intelblocks/rtc.h> |
| #include <soc/bootblock.h> |
| #include <soc/gpio.h> |
| #include <soc/iomap.h> |
| #include <soc/lpc.h> |
| #include <soc/p2sb.h> |
| #include <soc/pch.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pcr_ids.h> |
| #include <soc/pm.h> |
| |
| #define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP 0x1400 |
| #define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H 0x0980 |
| |
| #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 |
| |
| static uint32_t get_pmc_reg_base(void) |
| { |
| if (CONFIG(SOC_INTEL_CANNONLAKE_PCH_H)) |
| return PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H; |
| else |
| return PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP; |
| } |
| |
| static void soc_config_pwrmbase(void) |
| { |
| /* |
| * Assign Resources to PWRMBASE |
| * Clear BIT 1-2 Command Register |
| */ |
| pci_and_config16(PCH_DEV_PMC, PCI_COMMAND, ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER)); |
| |
| /* Program PWRM Base */ |
| pci_write_config32(PCH_DEV_PMC, PWRMBASE, PCH_PWRM_BASE_ADDRESS); |
| |
| /* Enable Bus Master and MMIO Space */ |
| pci_or_config16(PCH_DEV_PMC, PCI_COMMAND, (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER)); |
| |
| /* Enable PWRM in PMC */ |
| setbits32((void *) PCH_PWRM_BASE_ADDRESS + ACTL, PWRM_EN); |
| } |
| |
| void bootblock_pch_early_init(void) |
| { |
| /* |
| * Perform P2SB configuration before any another controller initialization as the |
| * controller might want to perform PCR settings. |
| */ |
| p2sb_enable_bar(); |
| p2sb_configure_hpet(); |
| |
| fast_spi_early_init(SPI_BASE_ADDRESS); |
| gspi_early_bar_init(); |
| |
| /* |
| * Enabling PWRM Base for accessing |
| * Global Reset Cause Register. |
| */ |
| soc_config_pwrmbase(); |
| } |
| |
| static void soc_config_acpibase(void) |
| { |
| uint32_t pmc_reg_value; |
| uint32_t pmc_base_reg; |
| |
| pmc_base_reg = get_pmc_reg_base(); |
| if (!pmc_base_reg) |
| die_with_post_code(POST_HW_INIT_FAILURE, |
| "Invalid PMC base address\n"); |
| |
| pmc_reg_value = pcr_read32(PID_PSF3, pmc_base_reg + |
| PCR_PSFX_TO_SHDW_BAR4); |
| |
| if (pmc_reg_value != 0xFFFFFFFF) |
| { |
| /* Disable Io Space before changing the address */ |
| pcr_rmw32(PID_PSF3, pmc_base_reg + |
| PCR_PSFX_T0_SHDW_PCIEN, |
| ~PCR_PSFX_TO_SHDW_PCIEN_IOEN, 0); |
| /* Program ABASE in PSF3 PMC space BAR4*/ |
| pcr_write32(PID_PSF3, pmc_base_reg + |
| PCR_PSFX_TO_SHDW_BAR4, |
| ACPI_BASE_ADDRESS); |
| /* Enable IO Space */ |
| pcr_rmw32(PID_PSF3, pmc_base_reg + |
| PCR_PSFX_T0_SHDW_PCIEN, |
| ~0, PCR_PSFX_TO_SHDW_PCIEN_IOEN); |
| } |
| } |
| |
| 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_EC_4E_4F | LPC_IOE_SUPERIO_2E_2F | LPC_IOE_KBC_60_64 | |
| LPC_IOE_EC_62_66 | LPC_IOE_LGE_200; |
| |
| /* IO Decode Range */ |
| if (CONFIG(DRIVERS_UART_8250IO)) |
| lpc_io_setup_comm_a_b(); |
| |
| /* IO Decode Enable */ |
| if (pch_check_decode_enable() == 0) |
| lpc_enable_fixed_io_ranges(io_enables); |
| |
| /* 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(); |
| |
| /* Set up GPE configuration */ |
| pmc_gpe_init(); |
| |
| enable_rtc_upper_bank(); |
| |
| /* GPIO community PM configuration */ |
| soc_gpio_pm_configuration(); |
| } |