1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (c) 2017 Intel Corporation 4 * 5 * Partially based on acpi.c for other x86 platforms 6 */ 7 8#include <common.h> 9#include <cpu.h> 10#include <dm.h> 11#include <mapmem.h> 12#include <acpi/acpi_table.h> 13#include <asm/ioapic.h> 14#include <asm/mpspec.h> 15#include <asm/tables.h> 16#include <asm/arch/global_nvs.h> 17#include <asm/arch/iomap.h> 18#include <dm/uclass-internal.h> 19 20static int tangier_write_fadt(struct acpi_ctx *ctx, 21 const struct acpi_writer *entry) 22{ 23 struct acpi_table_header *header; 24 struct acpi_fadt *fadt; 25 26 fadt = ctx->current; 27 header = &fadt->header; 28 29 memset(fadt, '\0', sizeof(struct acpi_fadt)); 30 31 acpi_fill_header(header, "FACP"); 32 header->length = sizeof(struct acpi_fadt); 33 header->revision = 6; 34 35 fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED; 36 37 fadt->iapc_boot_arch = ACPI_FADT_VGA_NOT_PRESENT | 38 ACPI_FADT_NO_PCIE_ASPM_CONTROL; 39 fadt->flags = 40 ACPI_FADT_WBINVD | 41 ACPI_FADT_POWER_BUTTON | ACPI_FADT_SLEEP_BUTTON | 42 ACPI_FADT_SEALED_CASE | ACPI_FADT_HEADLESS | 43 ACPI_FADT_HW_REDUCED_ACPI; 44 45 fadt->minor_revision = 2; 46 47 fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs); 48 fadt->x_dsdt = map_to_sysmem(ctx->dsdt); 49 50 header->checksum = table_compute_checksum(fadt, header->length); 51 52 return acpi_add_fadt(ctx, fadt); 53} 54ACPI_WRITER(5fadt, "FADT", tangier_write_fadt, 0); 55 56u32 acpi_fill_madt(u32 current) 57{ 58 current += acpi_create_madt_lapics(current); 59 60 current += acpi_create_madt_ioapic((struct acpi_madt_ioapic *)current, 61 io_apic_read(IO_APIC_ID) >> 24, IO_APIC_ADDR, 0); 62 63 return current; 64} 65 66int acpi_fill_mcfg(struct acpi_ctx *ctx) 67{ 68 size_t size; 69 70 /* TODO: Derive parameters from SFI MCFG table */ 71 size = acpi_create_mcfg_mmconfig 72 ((struct acpi_mcfg_mmconfig *)ctx->current, 73 MCFG_BASE_ADDRESS, 0x0, 0x0, 0x0); 74 acpi_inc(ctx, size); 75 76 return 0; 77} 78 79static u32 acpi_fill_csrt_dma(struct acpi_csrt_group *grp) 80{ 81 struct acpi_csrt_shared_info *si = (struct acpi_csrt_shared_info *)&grp[1]; 82 83 /* Fill the Resource Group with Shared Information attached */ 84 memset(grp, 0, sizeof(*grp)); 85 grp->shared_info_length = sizeof(struct acpi_csrt_shared_info); 86 grp->length = sizeof(struct acpi_csrt_group) + grp->shared_info_length; 87 /* TODO: All values below should come from U-Boot DT somehow */ 88 sprintf((char *)&grp->vendor_id, "%04X", 0x8086); 89 grp->device_id = 0x11a2; 90 91 /* Fill the Resource Group Shared Information */ 92 memset(si, 0, sizeof(*si)); 93 si->major_version = 1; 94 si->minor_version = 0; 95 /* TODO: All values below should come from U-Boot DT somehow */ 96 si->mmio_base_low = 0xff192000; 97 si->mmio_base_high = 0; 98 si->gsi_interrupt = 32; 99 si->interrupt_polarity = 0; /* Active High */ 100 si->interrupt_mode = 0; /* Level triggered */ 101 si->num_channels = 8; 102 si->dma_address_width = 32; 103 si->base_request_line = 0; 104 si->num_handshake_signals = 16; 105 si->max_block_size = 0x1ffff; 106 107 return grp->length; 108} 109 110int acpi_fill_csrt(struct acpi_ctx *ctx) 111{ 112 int size; 113 114 size = acpi_fill_csrt_dma(ctx->current); 115 acpi_inc(ctx, size); 116 117 return 0; 118} 119 120int acpi_create_gnvs(struct acpi_global_nvs *gnvs) 121{ 122 struct udevice *dev; 123 int ret; 124 125 /* at least we have one processor */ 126 gnvs->pcnt = 1; 127 128 /* override the processor count with actual number */ 129 ret = uclass_find_first_device(UCLASS_CPU, &dev); 130 if (ret == 0 && dev != NULL) { 131 ret = cpu_get_count(dev); 132 if (ret > 0) 133 gnvs->pcnt = ret; 134 } 135 136 return 0; 137} 138