diff options
Diffstat (limited to 'src/soc/intel/pantherlake/pmutil.c')
| -rw-r--r-- | src/soc/intel/pantherlake/pmutil.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/soc/intel/pantherlake/pmutil.c b/src/soc/intel/pantherlake/pmutil.c new file mode 100644 index 0000000000..892972c712 --- /dev/null +++ b/src/soc/intel/pantherlake/pmutil.c @@ -0,0 +1,267 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * Helper functions for dealing with power management registers + * and the differences between PCH variants. + */ + +#define __SIMPLE_DEVICE__ + +#include <acpi/acpi_pm.h> +#include <console/console.h> +#include <device/mmio.h> +#include <device/device.h> +#include <device/pci.h> +#include <intelblocks/pmclib.h> +#include <intelblocks/rtc.h> +#include <intelblocks/tco.h> +#include <intelpch/espi.h> +#include <security/vboot/vbnv.h> +#include <soc/gpe.h> +#include <soc/gpio.h> +#include <soc/iomap.h> +#include <soc/pci_devs.h> +#include <soc/pm.h> +#include <soc/smbus.h> +#include <soc/soc_chip.h> +#include <types.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 = (uint8_t *)(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; +} + +uintptr_t soc_read_pmc_base(void) +{ + return (uintptr_t)pmc_mmio_regs(); +} + +uint32_t *soc_pmc_etr_addr(void) +{ + return (uint32_t *)(soc_read_pmc_base() + ETR); +} + +void soc_get_gpi_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2) +{ + DEVTREE_CONST struct soc_intel_pantherlake_config *config; + + config = config_of_soc(); + if (config == NULL) { + printk(BIOS_ERR, "Configuration could not be retrieved.\n"); + return; + } + /* Assign to out variable */ + *dw0 = config->pmc_gpe0_dw0; + *dw1 = config->pmc_gpe0_dw1; + *dw2 = config->pmc_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; + + if (acpi_fetch_pm_state(&ps, PS_CLAIMER_RTC) < 0) + return 1; + + return rtc_failed(ps->gen_pmcon_b); +} + +int vbnv_cmos_failed(void) +{ + return rtc_failed(read32(pmc_mmio_regs() + GEN_PMCON_B)); +} + +static inline int deep_s3_enabled(void) +{ + uint32_t deep_s3_pol; + + deep_s3_pol = read32(pmc_mmio_regs() + S3_PWRGATE_POL); + return !!(deep_s3_pol & (S3DC_GATE_SUS | S3AC_GATE_SUS)); +} + +/* Return 0, 3, or 5 to indicate the previous sleep state. */ +int soc_prev_sleep_state(const struct chipset_power_state *ps, int prev_sleep_state) +{ + /* + * Check for any power failure to determine if this a wake from + * S5 because the PCH does not set the WAK_STS bit when waking + * from a true G3 state. + */ + if (!(ps->pm1_sts & WAK_STS) && (ps->gen_pmcon_a & (PWR_FLR | SUS_PWR_FLR))) + prev_sleep_state = ACPI_S5; + + /* + * If waking from S3 determine if deep S3 is enabled. If not, + * need to check both deep sleep well and normal suspend well. + * Otherwise just check deep sleep well. + */ + if (prev_sleep_state == ACPI_S3) { + /* PWR_FLR represents deep sleep power well loss. */ + uint32_t mask = PWR_FLR; + + /* If deep s3 isn't enabled check the suspend well too. */ + if (!deep_s3_enabled()) + mask |= SUS_PWR_FLR; + + if (ps->gen_pmcon_a & mask) + prev_sleep_state = ACPI_S5; + } + + return prev_sleep_state; +} + +void soc_fill_power_state(struct chipset_power_state *ps) +{ + uint8_t *pmc; + + ps->tco1_sts = tco_read_reg(TCO1_STS); + ps->tco2_sts = tco_read_reg(TCO2_STS); + + printk(BIOS_DEBUG, "TCO_STS: %04x %04x\n", ps->tco1_sts, ps->tco2_sts); + + pmc = pmc_mmio_regs(); + ps->gen_pmcon_a = read32(pmc + GEN_PMCON_A); + ps->gen_pmcon_b = read32(pmc + GEN_PMCON_B); + ps->gblrst_cause[0] = read32(pmc + GBLRST_CAUSE0); + ps->gblrst_cause[1] = read32(pmc + GBLRST_CAUSE1); + ps->hpr_cause0 = read32(pmc + HPR_CAUSE0); + + printk(BIOS_DEBUG, "GEN_PMCON: %08x %08x\n", + ps->gen_pmcon_a, ps->gen_pmcon_b); + + printk(BIOS_DEBUG, "GBLRST_CAUSE: %08x %08x\n", + ps->gblrst_cause[0], ps->gblrst_cause[1]); + + printk(BIOS_DEBUG, "HPR_CAUSE0: %08x\n", ps->hpr_cause0); +} + +/* STM Support */ +uint16_t get_pmbase(void) +{ + return (uint16_t)ACPI_BASE_ADDRESS; +} + +/* + * Set which power state system will be after reapplying + * the power (from G3 State) + */ +void pmc_soc_set_afterg3_en(const bool on) +{ + uint8_t reg8; + uint8_t *const pmcbase = pmc_mmio_regs(); + + reg8 = read8(pmcbase + GEN_PMCON_A); + if (on) + reg8 &= ~SLEEP_AFTER_POWER_FAIL; + else + reg8 |= SLEEP_AFTER_POWER_FAIL; + write8(pmcbase + GEN_PMCON_A, reg8); +} |