diff options
Diffstat (limited to 'src/soc/intel/icelake/pmutil.c')
| -rw-r--r-- | src/soc/intel/icelake/pmutil.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/soc/intel/icelake/pmutil.c b/src/soc/intel/icelake/pmutil.c new file mode 100644 index 0000000000..c020bf61d6 --- /dev/null +++ b/src/soc/intel/icelake/pmutil.c @@ -0,0 +1,231 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 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. + */ + +/* + * Helper functions for dealing with power management registers + * and the differences between PCH variants. + */ + +#define __SIMPLE_DEVICE__ + +#include <arch/io.h> +#include <cbmem.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_def.h> +#include <console/console.h> +#include <intelblocks/pmclib.h> +#include <intelblocks/rtc.h> +#include <halt.h> +#include <rules.h> +#include <stdlib.h> +#include <soc/gpe.h> +#include <soc/gpio.h> +#include <soc/iomap.h> +#include <soc/lpc.h> +#include <soc/pci_devs.h> +#include <soc/pm.h> +#include <soc/smbus.h> +#include <timer.h> +#include <security/vboot/vbnv.h> +#include "chip.h" + +/* + * SMI + */ + +const char *const *soc_smi_sts_array(size_t *a) +{ + static const char *const smi_sts_bits[] = { + [BIOS_STS_BIT] = "BIOS", + [LEGACY_USB_STS_BIT] = "LEGACY_USB", + [SMI_ON_SLP_EN_STS_BIT] = "SLP_SMI", + [APM_STS_BIT] = "APM", + [SWSMI_TMR_STS_BIT] = "SWSMI_TMR", + [PM1_STS_BIT] = "PM1", + [GPE0_STS_BIT] = "GPE0", + [GPIO_STS_BIT] = "GPI", + [MCSMI_STS_BIT] = "MCSMI", + [DEVMON_STS_BIT] = "DEVMON", + [TCO_STS_BIT] = "TCO", + [PERIODIC_STS_BIT] = "PERIODIC", + [SERIRQ_SMI_STS_BIT] = "SERIRQ_SMI", + [SMBUS_SMI_STS_BIT] = "SMBUS_SMI", + [PCI_EXP_SMI_STS_BIT] = "PCI_EXP_SMI", + [MONITOR_STS_BIT] = "MONITOR", + [SPI_SMI_STS_BIT] = "SPI", + [GPIO_UNLOCK_SMI_STS_BIT] = "GPIO_UNLOCK", + [ESPI_SMI_STS_BIT] = "ESPI_SMI", + }; + + *a = ARRAY_SIZE(smi_sts_bits); + return smi_sts_bits; +} + +/* + * TCO + */ + +const char *const *soc_tco_sts_array(size_t *a) +{ + static const char *const tco_sts_bits[] = { + [0] = "NMI2SMI", + [1] = "SW_TCO", + [2] = "TCO_INT", + [3] = "TIMEOUT", + [7] = "NEWCENTURY", + [8] = "BIOSWR", + [9] = "DMISCI", + [10] = "DMISMI", + [12] = "DMISERR", + [13] = "SLVSEL", + [16] = "INTRD_DET", + [17] = "SECOND_TO", + [18] = "BOOT", + [20] = "SMLINK_SLV" + }; + + *a = ARRAY_SIZE(tco_sts_bits); + return tco_sts_bits; +} + +/* + * GPE0 + */ + +const char *const *soc_std_gpe_sts_array(size_t *a) +{ + static const char *const gpe_sts_bits[] = { + [1] = "HOTPLUG", + [2] = "SWGPE", + [6] = "TCO_SCI", + [7] = "SMB_WAK", + [9] = "PCI_EXP", + [10] = "BATLOW", + [11] = "PME", + [12] = "ME", + [13] = "PME_B0", + [14] = "eSPI", + [15] = "GPIO Tier-2", + [16] = "LAN_WAKE", + [18] = "WADT" + }; + + *a = ARRAY_SIZE(gpe_sts_bits); + return gpe_sts_bits; +} + +void pmc_set_disb(void) +{ + /* Set the DISB after DRAM init */ + uint8_t disb_val; + /* Only care about bits [23:16] of register GEN_PMCON_A */ + uint8_t *addr = (void *)(pmc_mmio_regs() + GEN_PMCON_A + 2); + + disb_val = read8(addr); + disb_val |= (DISB >> 16); + + /* Don't clear bits that are write-1-to-clear */ + disb_val &= ~((MS4V | SUS_PWR_FLR) >> 16); + write8(addr, disb_val); +} + +/* + * PMC controller gets hidden from PCI bus + * during FSP-Silicon init call. Hence PWRMBASE + * can't be accessible using PCI configuration space + * read/write. + */ +uint8_t *pmc_mmio_regs(void) +{ + return (void *)(uintptr_t)PCH_PWRM_BASE_ADDRESS; +} + +uint16_t smbus_tco_regs(void) +{ + uint16_t reg16; + + reg16 = pci_read_config16(PCH_DEV_SMBUS, TCOBASE); + + return ALIGN_DOWN(reg16, 0x20); +} + +uint32_t soc_reset_tco_status(void) +{ + u16 tco1_sts; + u16 tco2_sts; + u16 tcobase; + + tcobase = smbus_tco_regs(); + + /* TCO Status 2 register */ + tco2_sts = inw(tcobase + TCO2_STS); + tco2_sts |= TCO2_STS_SECOND_TO; + outw(tco2_sts, tcobase + TCO2_STS); + + /* TCO Status 1 register */ + tco1_sts = inw(tcobase + TCO1_STS); + + /* Clear SECOND_TO_STS bit */ + if (tco2_sts & TCO2_STS_SECOND_TO) + outw(tco2_sts & ~TCO2_STS_SECOND_TO, tcobase + TCO2_STS); + + return (tco2_sts << 16) | tco1_sts; +} + +uintptr_t soc_read_pmc_base(void) +{ + return (uintptr_t)pmc_mmio_regs(); +} + +void soc_get_gpi_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2) +{ + DEVTREE_CONST struct soc_intel_icelake_config *config; + + /* Look up the device in devicetree */ + DEVTREE_CONST struct device *dev = dev_find_slot(0, PCH_DEVFN_PMC); + if (!dev || !dev->chip_info) { + printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n"); + return; + } + config = dev->chip_info; + + /* Assign to out variable */ + *dw0 = config->gpe0_dw0; + *dw1 = config->gpe0_dw1; + *dw2 = config->gpe0_dw2; +} + +static int rtc_failed(uint32_t gen_pmcon_b) +{ + return !!(gen_pmcon_b & RTC_BATTERY_DEAD); +} + +int soc_get_rtc_failed(void) +{ + const struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE); + + if (!ps) { + printk(BIOS_ERR, "Could not find power state in cbmem, RTC init aborted\n"); + return 1; + } + + return rtc_failed(ps->gen_pmcon_b); +} + +int vbnv_cmos_failed(void) +{ + return rtc_failed(read32(pmc_mmio_regs() + GEN_PMCON_B)); +} |