// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2016, Bin Meng */ #include #include #include #include #include #include #include #include #include #include #include static int baytrail_write_fadt(struct acpi_ctx *ctx, const struct acpi_writer *entry) { struct acpi_table_header *header; struct acpi_fadt *fadt; fadt = ctx->current; header = &fadt->header; u16 pmbase = ACPI_BASE_ADDRESS; memset(fadt, '\0', sizeof(struct acpi_fadt)); acpi_fill_header(header, "FACP"); header->length = sizeof(struct acpi_fadt); header->revision = 4; fadt->firmware_ctrl = (u32)ctx->facs; fadt->dsdt = (u32)ctx->dsdt; fadt->preferred_pm_profile = ACPI_PM_MOBILE; fadt->sci_int = 9; fadt->smi_cmd = 0; fadt->acpi_enable = 0; fadt->acpi_disable = 0; fadt->s4bios_req = 0; fadt->pstate_cnt = 0; fadt->pm1a_evt_blk = pmbase; fadt->pm1b_evt_blk = 0x0; fadt->pm1a_cnt_blk = pmbase + 0x4; fadt->pm1b_cnt_blk = 0x0; fadt->pm2_cnt_blk = pmbase + 0x50; fadt->pm_tmr_blk = pmbase + 0x8; fadt->gpe0_blk = pmbase + 0x20; fadt->gpe1_blk = 0; fadt->pm1_evt_len = 4; fadt->pm1_cnt_len = 2; fadt->pm2_cnt_len = 1; fadt->pm_tmr_len = 4; fadt->gpe0_blk_len = 8; fadt->gpe1_blk_len = 0; fadt->gpe1_base = 0; fadt->cst_cnt = 0; fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED; fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED; fadt->flush_size = 0; fadt->flush_stride = 0; fadt->duty_offset = 1; fadt->duty_width = 0; fadt->day_alrm = 0x0d; fadt->mon_alrm = 0x00; fadt->century = 0x00; fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042; fadt->flags = ACPI_FADT_WBINVD | ACPI_FADT_C1_SUPPORTED | ACPI_FADT_C2_MP_SUPPORTED | ACPI_FADT_SLEEP_BUTTON | ACPI_FADT_S4_RTC_WAKE | ACPI_FADT_RESET_REGISTER | ACPI_FADT_PLATFORM_CLOCK; fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO; fadt->reset_reg.bit_width = 8; fadt->reset_reg.bit_offset = 0; fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS; fadt->reset_reg.addrl = IO_PORT_RESET; fadt->reset_reg.addrh = 0; fadt->reset_value = SYS_RST | RST_CPU | FULL_RST; fadt->x_firmware_ctl_l = (u32)ctx->facs; fadt->x_firmware_ctl_h = 0; fadt->x_dsdt_l = (u32)ctx->dsdt; fadt->x_dsdt_h = 0; fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8; fadt->x_pm1a_evt_blk.bit_offset = 0; fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; fadt->x_pm1a_evt_blk.addrl = fadt->pm1a_evt_blk; fadt->x_pm1a_evt_blk.addrh = 0x0; fadt->x_pm1b_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_pm1b_evt_blk.bit_width = 0; fadt->x_pm1b_evt_blk.bit_offset = 0; fadt->x_pm1b_evt_blk.access_size = 0; fadt->x_pm1b_evt_blk.addrl = 0x0; fadt->x_pm1b_evt_blk.addrh = 0x0; fadt->x_pm1a_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8; fadt->x_pm1a_cnt_blk.bit_offset = 0; fadt->x_pm1a_cnt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS; fadt->x_pm1a_cnt_blk.addrl = fadt->pm1a_cnt_blk; fadt->x_pm1a_cnt_blk.addrh = 0x0; fadt->x_pm1b_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_pm1b_cnt_blk.bit_width = 0; fadt->x_pm1b_cnt_blk.bit_offset = 0; fadt->x_pm1b_cnt_blk.access_size = 0; fadt->x_pm1b_cnt_blk.addrl = 0x0; fadt->x_pm1b_cnt_blk.addrh = 0x0; fadt->x_pm2_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8; fadt->x_pm2_cnt_blk.bit_offset = 0; fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS; fadt->x_pm2_cnt_blk.addrl = fadt->pm2_cnt_blk; fadt->x_pm2_cnt_blk.addrh = 0x0; fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8; fadt->x_pm_tmr_blk.bit_offset = 0; fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; fadt->x_pm_tmr_blk.addrl = fadt->pm_tmr_blk; fadt->x_pm_tmr_blk.addrh = 0x0; fadt->x_gpe0_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8; fadt->x_gpe0_blk.bit_offset = 0; fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; fadt->x_gpe0_blk.addrl = fadt->gpe0_blk; fadt->x_gpe0_blk.addrh = 0x0; fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO; fadt->x_gpe1_blk.bit_width = 0; fadt->x_gpe1_blk.bit_offset = 0; fadt->x_gpe1_blk.access_size = 0; fadt->x_gpe1_blk.addrl = 0x0; fadt->x_gpe1_blk.addrh = 0x0; header->checksum = table_compute_checksum(fadt, header->length); return acpi_add_fadt(ctx, fadt); } ACPI_WRITER(5fadt, "FADT", baytrail_write_fadt, 0); int acpi_create_gnvs(struct acpi_global_nvs *gnvs) { struct udevice *dev; int ret; /* at least we have one processor */ gnvs->pcnt = 1; /* override the processor count with actual number */ ret = uclass_find_first_device(UCLASS_CPU, &dev); if (ret == 0 && dev != NULL) { ret = cpu_get_count(dev); if (ret > 0) gnvs->pcnt = ret; } /* determine whether internal uart is on */ if (IS_ENABLED(CONFIG_INTERNAL_UART)) gnvs->iuart_en = 1; else gnvs->iuart_en = 0; return 0; } /* * The following two routines are called at a very early stage, even before * FSP 2nd phase API fsp_init() is called. Registers off ACPI_BASE_ADDRESS * and PMC_BASE_ADDRESS are accessed, so we need make sure the base addresses * of these two blocks are programmed by either U-Boot or FSP. * * It has been verified that 1st phase API (see arch/x86/lib/fsp1/fsp_car.S) * on Intel BayTrail SoC already initializes these two base addresses so * we are safe to access these registers here. */ enum acpi_sleep_state chipset_prev_sleep_state(void) { u32 pm1_sts; u32 pm1_cnt; u32 gen_pmcon1; enum acpi_sleep_state prev_sleep_state = ACPI_S0; /* Read Power State */ pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS); pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT); gen_pmcon1 = readl(PMC_BASE_ADDRESS + GEN_PMCON1); debug("PM1_STS = 0x%x PM1_CNT = 0x%x GEN_PMCON1 = 0x%x\n", pm1_sts, pm1_cnt, gen_pmcon1); if (pm1_sts & WAK_STS) prev_sleep_state = acpi_sleep_from_pm1(pm1_cnt); if (gen_pmcon1 & (PWR_FLR | SUS_PWR_FLR)) prev_sleep_state = ACPI_S5; return prev_sleep_state; } void chipset_clear_sleep_state(void) { u32 pm1_cnt; pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT); outl(pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT); }