/* SPDX-License-Identifier: GPL-2.0-only */ #define __SIMPLE_DEVICE__ #include <acpi/acpi.h> #include <arch/io.h> #include <assert.h> #include <bootmode.h> #include <console/console.h> #include <device/device.h> #include <device/mmio.h> #include <device/pci.h> #include <device/pci_ops.h> #include <halt.h> #include <soc/iomap.h> #include <soc/lpc.h> #include <soc/pci_devs.h> #include <soc/pm.h> #include <stdint.h> #include <security/vboot/vbnv.h> uint16_t get_pmbase(void) { return pci_read_config16(PCI_DEV(0, PCU_DEV, 0), ABASE) & 0xfff8; } static void print_num_status_bits(int num_bits, uint32_t status, const char *const bit_names[]) { int i; if (!status) return; for (i = num_bits - 1; i >= 0; i--) { if (status & (1 << i)) { if (bit_names[i]) printk(BIOS_DEBUG, "%s ", bit_names[i]); else printk(BIOS_DEBUG, "BIT%d ", i); } } } static uint32_t print_smi_status(uint32_t smi_sts) { static const char *const smi_sts_bits[] = { [2] = "BIOS", [4] = "SLP_SMI", [5] = "APM", [6] = "SWSMI_TMR", [8] = "PM1", [9] = "GPE0", [12] = "DEVMON", [13] = "TCO", [14] = "PERIODIC", [15] = "ILB", [16] = "SMBUS_SMI", [17] = "LEGACY_USB2", [18] = "INTEL_USB2", [20] = "PCI_EXP_SMI", [26] = "SPI", [28] = "PUNIT", [29] = "GUNIT", }; if (!smi_sts) return 0; printk(BIOS_DEBUG, "SMI_STS: "); print_num_status_bits(30, smi_sts, smi_sts_bits); printk(BIOS_DEBUG, "\n"); return smi_sts; } static uint32_t reset_smi_status(void) { uint16_t pmbase = get_pmbase(); uint32_t smi_sts = inl(pmbase + SMI_STS); outl(smi_sts, pmbase + SMI_STS); return smi_sts; } uint32_t clear_smi_status(void) { return print_smi_status(reset_smi_status()); } void enable_smi(uint32_t mask) { uint16_t pmbase = get_pmbase(); uint32_t smi_en = inl(pmbase + SMI_EN); smi_en |= mask; outl(smi_en, pmbase + SMI_EN); } void disable_smi(uint32_t mask) { uint16_t pmbase = get_pmbase(); uint32_t smi_en = inl(pmbase + SMI_EN); smi_en &= ~mask; outl(smi_en, pmbase + SMI_EN); } void enable_pm1_control(uint32_t mask) { uint16_t pmbase = get_pmbase(); uint32_t pm1_cnt = inl(pmbase + PM1_CNT); pm1_cnt |= mask; outl(pm1_cnt, pmbase + PM1_CNT); } void disable_pm1_control(uint32_t mask) { uint16_t pmbase = get_pmbase(); uint32_t pm1_cnt = inl(pmbase + PM1_CNT); pm1_cnt &= ~mask; outl(pm1_cnt, pmbase + PM1_CNT); } static uint16_t reset_pm1_status(void) { uint16_t pmbase = get_pmbase(); uint16_t pm1_sts = inw(pmbase + PM1_STS); outw(pm1_sts, pmbase + PM1_STS); return pm1_sts; } static uint16_t print_pm1_status(uint16_t pm1_sts) { static const char *const pm1_sts_bits[] = { [0] = "TMROF", [5] = "GBL", [8] = "PWRBTN", [10] = "RTC", [11] = "PRBTNOR", [13] = "USB", [14] = "PCIEXPWAK", [15] = "WAK", }; if (!pm1_sts) return 0; printk(BIOS_SPEW, "PM1_STS: "); print_num_status_bits(16, pm1_sts, pm1_sts_bits); printk(BIOS_SPEW, "\n"); return pm1_sts; } uint16_t clear_pm1_status(void) { return print_pm1_status(reset_pm1_status()); } void enable_pm1(uint16_t events) { outw(events, get_pmbase() + PM1_EN); } static uint32_t print_tco_status(uint32_t tco_sts) { static const char *const tco_sts_bits[] = { [3] = "TIMEOUT", [17] = "SECOND_TO", }; if (!tco_sts) return 0; printk(BIOS_DEBUG, "TCO_STS: "); print_num_status_bits(18, tco_sts, tco_sts_bits); printk(BIOS_DEBUG, "\n"); return tco_sts; } static uint32_t reset_tco_status(void) { uint16_t pmbase = get_pmbase(); uint32_t tco_sts = inl(pmbase + TCO_STS); uint32_t tco_en = inl(pmbase + TCO1_CNT); outl(tco_sts, pmbase + TCO_STS); return tco_sts & tco_en; } uint32_t clear_tco_status(void) { return print_tco_status(reset_tco_status()); } void enable_gpe(uint32_t mask) { uint16_t pmbase = get_pmbase(); uint32_t gpe0_en = inl(pmbase + GPE0_EN); gpe0_en |= mask; outl(gpe0_en, pmbase + GPE0_EN); } void disable_gpe(uint32_t mask) { uint16_t pmbase = get_pmbase(); uint32_t gpe0_en = inl(pmbase + GPE0_EN); gpe0_en &= ~mask; outl(gpe0_en, pmbase + GPE0_EN); } void disable_all_gpe(void) { disable_gpe(~0); } static uint32_t reset_gpe_status(void) { uint16_t pmbase = get_pmbase(); uint32_t gpe_sts = inl(pmbase + GPE0_STS); outl(gpe_sts, pmbase + GPE0_STS); return gpe_sts; } static uint32_t print_gpe_sts(uint32_t gpe_sts) { static const char *const gpe_sts_bits[] = { [1] = "HOTPLUG", [2] = "SWGPE", [3] = "PCIE_WAKE0", [4] = "PUNIT", [5] = "GUNIT", [6] = "PCIE_WAKE1", [7] = "PCIE_WAKE2", [8] = "PCIE_WAKE3", [9] = "PCI_EXP", [10] = "BATLOW", [13] = "PME_B0", [16] = "SUS_GPIO_0", [17] = "SUS_GPIO_1", [18] = "SUS_GPIO_2", [19] = "SUS_GPIO_3", [20] = "SUS_GPIO_4", [21] = "SUS_GPIO_5", [22] = "SUS_GPIO_6", [23] = "SUS_GPIO_7", [24] = "CORE_GPIO_0", [25] = "CORE_GPIO_1", [26] = "CORE_GPIO_2", [27] = "CORE_GPIO_3", [28] = "CORE_GPIO_4", [29] = "CORE_GPIO_5", [30] = "CORE_GPIO_6", [31] = "CORE_GPIO_7", }; if (!gpe_sts) return gpe_sts; printk(BIOS_DEBUG, "GPE0a_STS: "); print_num_status_bits(32, gpe_sts, gpe_sts_bits); printk(BIOS_DEBUG, "\n"); return gpe_sts; } uint32_t clear_gpe_status(void) { return print_gpe_sts(reset_gpe_status()); } static uint32_t reset_alt_status(void) { uint16_t pmbase = get_pmbase(); uint32_t alt_gpio_smi = inl(pmbase + ALT_GPIO_SMI); outl(alt_gpio_smi, pmbase + ALT_GPIO_SMI); return alt_gpio_smi; } static uint32_t print_alt_sts(uint32_t alt_gpio_smi) { uint32_t alt_gpio_sts; static const char *const alt_gpio_smi_sts_bits[] = { [0] = "SUS_GPIO_0", [1] = "SUS_GPIO_1", [2] = "SUS_GPIO_2", [3] = "SUS_GPIO_3", [4] = "SUS_GPIO_4", [5] = "SUS_GPIO_5", [6] = "SUS_GPIO_6", [7] = "SUS_GPIO_7", [8] = "CORE_GPIO_0", [9] = "CORE_GPIO_1", [10] = "CORE_GPIO_2", [11] = "CORE_GPIO_3", [12] = "CORE_GPIO_4", [13] = "CORE_GPIO_5", [14] = "CORE_GPIO_6", [15] = "CORE_GPIO_7", }; /* Status bits are in the upper 16 bits. */ alt_gpio_sts = alt_gpio_smi >> 16; if (!alt_gpio_sts) return alt_gpio_smi; printk(BIOS_DEBUG, "ALT_GPIO_SMI: "); print_num_status_bits(16, alt_gpio_sts, alt_gpio_smi_sts_bits); printk(BIOS_DEBUG, "\n"); return alt_gpio_smi; } uint32_t clear_alt_status(void) { return print_alt_sts(reset_alt_status()); } void clear_pmc_status(void) { uint32_t prsts; uint32_t gen_pmcon1; prsts = read32((void *)(PMC_BASE_ADDRESS + PRSTS)); gen_pmcon1 = read32((void *)(PMC_BASE_ADDRESS + GEN_PMCON1)); /* Clear the status bits. The RPS field is cleared on a 0 write. */ write32((void *)(PMC_BASE_ADDRESS + GEN_PMCON1), gen_pmcon1 & ~RPS); write32((void *)(PMC_BASE_ADDRESS + PRSTS), prsts); } int rtc_failure(void) { uint32_t gen_pmcon1; int rtc_fail; /* not usable in ramstage as GEN_PMCON1 gets reset */ if (ENV_RAMSTAGE) dead_code(); gen_pmcon1 = read32((u32 *)(PMC_BASE_ADDRESS + GEN_PMCON1)); rtc_fail = !!(gen_pmcon1 & RPS); if (rtc_fail) printk(BIOS_DEBUG, "RTC failure.\n"); return rtc_fail; } int vbnv_cmos_failed(void) { return rtc_failure(); } int platform_is_resuming(void) { if (!(inw(ACPI_BASE_ADDRESS + PM1_STS) & WAK_STS)) return 0; return acpi_sleep_from_pm1(inl(ACPI_BASE_ADDRESS + PM1_CNT)) == ACPI_S3; } void poweroff(void) { uint32_t pm1_cnt; /* Go to S5 */ pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT); pm1_cnt |= (0xf << 10); outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT); }