1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 3 /* 4 * Based on src/southbridge/via/vt8237r/vt8237_fadt.c 5 */ 6 7 #include <acpi/acpi.h> 8 #include <device/device.h> 9 #include <device/pci.h> 10 11 #include "i82371eb.h" 12 13 /** 14 * Create the Fixed ACPI Description Tables (FADT) for any board with this SB. 15 * Reference: ACPIspec40a, 5.2.9, page 118 16 */ acpi_fill_fadt(acpi_fadt_t * fadt)17void acpi_fill_fadt(acpi_fadt_t *fadt) 18 { 19 fadt->pm1a_evt_blk = DEFAULT_PMBASE; 20 fadt->pm1a_cnt_blk = DEFAULT_PMBASE + PMCNTRL; 21 22 fadt->pm_tmr_blk = DEFAULT_PMBASE + PMTMR; 23 fadt->gpe0_blk = DEFAULT_PMBASE + GPSTS; 24 25 /* *_len define register width in bytes */ 26 fadt->pm1_evt_len = 4; 27 fadt->pm1_cnt_len = 2; 28 fadt->pm_tmr_len = 4; 29 fadt->gpe0_blk_len = 4; 30 31 fill_fadt_extended_pm_io(fadt); 32 33 /* 34 * bit meaning 35 * 0 1: We have user-visible legacy devices 36 * 1 1: 8042 37 * 2 0: VGA is ok to probe 38 * 3 1: MSI are not supported 39 */ 40 fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042 | 41 ACPI_FADT_MSI_NOT_SUPPORTED; 42 /* 43 * bit meaning 44 * 0 WBINVD 45 * Processors in new ACPI-compatible systems are required to 46 * support this function and indicate this to OSPM by setting 47 * this field. 48 * 1 WBINVD_FLUSH 49 * If set, indicates that the hardware flushes all caches on the 50 * WBINVD instruction and maintains memory coherency, but does 51 * not guarantee the caches are invalidated. 52 * 2 PROC_C1 53 * C1 power state (x86 hlt instruction) is supported on all cpus 54 * 3 P_LVL2_UP 55 * 0: C2 only on uniprocessor, 1: C2 on uni- and multiprocessor 56 * 4 PWR_BUTTON 57 * 0: pwr button is fixed feature 58 * 1: pwr button has control method device if present 59 * 5 SLP_BUTTON 60 * 0: sleep button is fixed feature 61 * 1: sleep button has control method device if present 62 * 6 FIX_RTC 63 * 0: RTC wake status supported in fixed register spce 64 * 7 RTC_S4 65 * 1: RTC can wake from S4 66 * 8 TMR_VAL_EXT 67 * 1: pmtimer is 32bit, 0: pmtimer is 24bit 68 * 9 DCK_CAP 69 * 1: system supports docking station 70 * 10 RESET_REG_SUPPORT 71 * 1: fadt describes reset register for system reset 72 * 11 SEALED_CASE 73 * 1: No expansion possible, sealed case 74 * 12 HEADLESS 75 * 1: Video output, keyboard and mouse are not connected 76 * 13 CPU_SW_SLP 77 * 1: Special processor instruction needs to be executed 78 * after writing SLP_TYP 79 * 14 PCI_EXP_WAK 80 * 1: PM1 regs support PCIEXP_WAKE_(STS|EN), must be set 81 * on platforms with pci express support 82 * 15 USE_PLATFORM_CLOCK 83 * 1: OS should prefer platform clock over processor internal 84 * clock. 85 * 16 S4_RTC_STS_VALID 86 * 17 REMOTE_POWER_ON_CAPABLE 87 * 1: platform correctly supports OSPM leaving GPE wake events 88 * armed prior to an S5 transition. 89 * 18 FORCE_APIC_CLUSTER_MODEL 90 * 19 FORCE_APIC_PHYSICAL_DESTINATION_MODE 91 */ 92 fadt->flags |= ACPI_FADT_WBINVD | ACPI_FADT_C1_SUPPORTED | ACPI_FADT_SLEEP_BUTTON | 93 ACPI_FADT_S4_RTC_WAKE; 94 } 95