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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Based on acpi.c from coreboot
- *
- * Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
- * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
- */
- #define LOG_CATEGORY LOGC_ACPI
- #include <common.h>
- #include <bloblist.h>
- #include <cpu.h>
- #include <dm.h>
- #include <log.h>
- #include <dm/uclass-internal.h>
- #include <mapmem.h>
- #include <serial.h>
- #include <version.h>
- #include <acpi/acpigen.h>
- #include <acpi/acpi_device.h>
- #include <acpi/acpi_table.h>
- #include <asm/acpi/global_nvs.h>
- #include <asm/ioapic.h>
- #include <asm/lapic.h>
- #include <asm/mpspec.h>
- #include <asm/tables.h>
- #include <asm/arch/global_nvs.h>
- #include <dm/acpi.h>
- #include <linux/err.h>
- /*
- * IASL compiles the dsdt entries and writes the hex values
- * to a C array AmlCode[] (see dsdt.c).
- */
- extern const unsigned char AmlCode[];
- /* ACPI RSDP address to be used in boot parameters */
- static ulong acpi_rsdp_addr;
- static void acpi_create_facs(struct acpi_facs *facs)
- {
- memset((void *)facs, 0, sizeof(struct acpi_facs));
- memcpy(facs->signature, "FACS", 4);
- facs->length = sizeof(struct acpi_facs);
- facs->hardware_signature = 0;
- facs->firmware_waking_vector = 0;
- facs->global_lock = 0;
- facs->flags = 0;
- facs->x_firmware_waking_vector_l = 0;
- facs->x_firmware_waking_vector_h = 0;
- facs->version = 1;
- }
- static int acpi_create_madt_lapic(struct acpi_madt_lapic *lapic,
- u8 cpu, u8 apic)
- {
- lapic->type = ACPI_APIC_LAPIC;
- lapic->length = sizeof(struct acpi_madt_lapic);
- lapic->flags = LOCAL_APIC_FLAG_ENABLED;
- lapic->processor_id = cpu;
- lapic->apic_id = apic;
- return lapic->length;
- }
- int acpi_create_madt_lapics(u32 current)
- {
- struct udevice *dev;
- int total_length = 0;
- int cpu_num = 0;
- for (uclass_find_first_device(UCLASS_CPU, &dev);
- dev;
- uclass_find_next_device(&dev)) {
- struct cpu_platdata *plat = dev_get_parent_plat(dev);
- int length;
- length = acpi_create_madt_lapic(
- (struct acpi_madt_lapic *)current, cpu_num++,
- plat->cpu_id);
- current += length;
- total_length += length;
- }
- return total_length;
- }
- int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id,
- u32 addr, u32 gsi_base)
- {
- ioapic->type = ACPI_APIC_IOAPIC;
- ioapic->length = sizeof(struct acpi_madt_ioapic);
- ioapic->reserved = 0x00;
- ioapic->gsi_base = gsi_base;
- ioapic->ioapic_id = id;
- ioapic->ioapic_addr = addr;
- return ioapic->length;
- }
- int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride,
- u8 bus, u8 source, u32 gsirq, u16 flags)
- {
- irqoverride->type = ACPI_APIC_IRQ_SRC_OVERRIDE;
- irqoverride->length = sizeof(struct acpi_madt_irqoverride);
- irqoverride->bus = bus;
- irqoverride->source = source;
- irqoverride->gsirq = gsirq;
- irqoverride->flags = flags;
- return irqoverride->length;
- }
- int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi,
- u8 cpu, u16 flags, u8 lint)
- {
- lapic_nmi->type = ACPI_APIC_LAPIC_NMI;
- lapic_nmi->length = sizeof(struct acpi_madt_lapic_nmi);
- lapic_nmi->flags = flags;
- lapic_nmi->processor_id = cpu;
- lapic_nmi->lint = lint;
- return lapic_nmi->length;
- }
- static int acpi_create_madt_irq_overrides(u32 current)
- {
- struct acpi_madt_irqoverride *irqovr;
- u16 sci_flags = MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_HIGH;
- int length = 0;
- irqovr = (void *)current;
- length += acpi_create_madt_irqoverride(irqovr, 0, 0, 2, 0);
- irqovr = (void *)(current + length);
- length += acpi_create_madt_irqoverride(irqovr, 0, 9, 9, sci_flags);
- return length;
- }
- __weak u32 acpi_fill_madt(u32 current)
- {
- current += acpi_create_madt_lapics(current);
- current += acpi_create_madt_ioapic((struct acpi_madt_ioapic *)current,
- io_apic_read(IO_APIC_ID) >> 24, IO_APIC_ADDR, 0);
- current += acpi_create_madt_irq_overrides(current);
- return current;
- }
- static void acpi_create_madt(struct acpi_madt *madt)
- {
- struct acpi_table_header *header = &(madt->header);
- u32 current = (u32)madt + sizeof(struct acpi_madt);
- memset((void *)madt, 0, sizeof(struct acpi_madt));
- /* Fill out header fields */
- acpi_fill_header(header, "APIC");
- header->length = sizeof(struct acpi_madt);
- header->revision = ACPI_MADT_REV_ACPI_3_0;
- madt->lapic_addr = LAPIC_DEFAULT_BASE;
- madt->flags = ACPI_MADT_PCAT_COMPAT;
- current = acpi_fill_madt(current);
- /* (Re)calculate length and checksum */
- header->length = current - (u32)madt;
- header->checksum = table_compute_checksum((void *)madt, header->length);
- }
- int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig, u32 base,
- u16 seg_nr, u8 start, u8 end)
- {
- memset(mmconfig, 0, sizeof(*mmconfig));
- mmconfig->base_address_l = base;
- mmconfig->base_address_h = 0;
- mmconfig->pci_segment_group_number = seg_nr;
- mmconfig->start_bus_number = start;
- mmconfig->end_bus_number = end;
- return sizeof(struct acpi_mcfg_mmconfig);
- }
- __weak u32 acpi_fill_mcfg(u32 current)
- {
- current += acpi_create_mcfg_mmconfig
- ((struct acpi_mcfg_mmconfig *)current,
- CONFIG_PCIE_ECAM_BASE, 0x0, 0x0, 255);
- return current;
- }
- /* MCFG is defined in the PCI Firmware Specification 3.0 */
- static void acpi_create_mcfg(struct acpi_mcfg *mcfg)
- {
- struct acpi_table_header *header = &(mcfg->header);
- u32 current = (u32)mcfg + sizeof(struct acpi_mcfg);
- memset((void *)mcfg, 0, sizeof(struct acpi_mcfg));
- /* Fill out header fields */
- acpi_fill_header(header, "MCFG");
- header->length = sizeof(struct acpi_mcfg);
- header->revision = 1;
- current = acpi_fill_mcfg(current);
- /* (Re)calculate length and checksum */
- header->length = current - (u32)mcfg;
- header->checksum = table_compute_checksum((void *)mcfg, header->length);
- }
- /**
- * acpi_create_tcpa() - Create a TCPA table
- *
- * @tcpa: Pointer to place to put table
- *
- * Trusted Computing Platform Alliance Capabilities Table
- * TCPA PC Specific Implementation SpecificationTCPA is defined in the PCI
- * Firmware Specification 3.0
- */
- static int acpi_create_tcpa(struct acpi_tcpa *tcpa)
- {
- struct acpi_table_header *header = &tcpa->header;
- u32 current = (u32)tcpa + sizeof(struct acpi_tcpa);
- int size = 0x10000; /* Use this as the default size */
- void *log;
- int ret;
- if (!CONFIG_IS_ENABLED(BLOBLIST))
- return -ENXIO;
- memset(tcpa, '\0', sizeof(struct acpi_tcpa));
- /* Fill out header fields */
- acpi_fill_header(header, "TCPA");
- header->length = sizeof(struct acpi_tcpa);
- header->revision = 1;
- ret = bloblist_ensure_size_ret(BLOBLISTT_TCPA_LOG, &size, &log);
- if (ret)
- return log_msg_ret("blob", ret);
- tcpa->platform_class = 0;
- tcpa->laml = size;
- tcpa->lasa = (ulong)log;
- /* (Re)calculate length and checksum */
- header->length = current - (u32)tcpa;
- header->checksum = table_compute_checksum((void *)tcpa, header->length);
- return 0;
- }
- static int get_tpm2_log(void **ptrp, int *sizep)
- {
- const int tpm2_default_log_len = 0x10000;
- int size;
- int ret;
- *sizep = 0;
- size = tpm2_default_log_len;
- ret = bloblist_ensure_size_ret(BLOBLISTT_TPM2_TCG_LOG, &size, ptrp);
- if (ret)
- return log_msg_ret("blob", ret);
- *sizep = size;
- return 0;
- }
- static int acpi_create_tpm2(struct acpi_tpm2 *tpm2)
- {
- struct acpi_table_header *header = &tpm2->header;
- int tpm2_log_len;
- void *lasa;
- int ret;
- memset((void *)tpm2, 0, sizeof(struct acpi_tpm2));
- /*
- * Some payloads like SeaBIOS depend on log area to use TPM2.
- * Get the memory size and address of TPM2 log area or initialize it.
- */
- ret = get_tpm2_log(&lasa, &tpm2_log_len);
- if (ret)
- return ret;
- /* Fill out header fields. */
- acpi_fill_header(header, "TPM2");
- memcpy(header->aslc_id, ASLC_ID, 4);
- header->length = sizeof(struct acpi_tpm2);
- header->revision = acpi_get_table_revision(ACPITAB_TPM2);
- /* Hard to detect for coreboot. Just set it to 0 */
- tpm2->platform_class = 0;
- /* Must be set to 0 for FIFO-interface support */
- tpm2->control_area = 0;
- tpm2->start_method = 6;
- memset(tpm2->msp, 0, sizeof(tpm2->msp));
- /* Fill the log area size and start address fields. */
- tpm2->laml = tpm2_log_len;
- tpm2->lasa = (uintptr_t)lasa;
- /* Calculate checksum. */
- header->checksum = table_compute_checksum((void *)tpm2, header->length);
- return 0;
- }
- __weak u32 acpi_fill_csrt(u32 current)
- {
- return 0;
- }
- static int acpi_create_csrt(struct acpi_csrt *csrt)
- {
- struct acpi_table_header *header = &(csrt->header);
- u32 current = (u32)csrt + sizeof(struct acpi_csrt);
- uint ptr;
- memset((void *)csrt, 0, sizeof(struct acpi_csrt));
- /* Fill out header fields */
- acpi_fill_header(header, "CSRT");
- header->length = sizeof(struct acpi_csrt);
- header->revision = 0;
- ptr = acpi_fill_csrt(current);
- if (!ptr)
- return -ENOENT;
- current = ptr;
- /* (Re)calculate length and checksum */
- header->length = current - (u32)csrt;
- header->checksum = table_compute_checksum((void *)csrt, header->length);
- return 0;
- }
- static void acpi_create_spcr(struct acpi_spcr *spcr)
- {
- struct acpi_table_header *header = &(spcr->header);
- struct serial_device_info serial_info = {0};
- ulong serial_address, serial_offset;
- struct udevice *dev;
- uint serial_config;
- uint serial_width;
- int access_size;
- int space_id;
- int ret = -ENODEV;
- memset((void *)spcr, 0, sizeof(struct acpi_spcr));
- /* Fill out header fields */
- acpi_fill_header(header, "SPCR");
- header->length = sizeof(struct acpi_spcr);
- header->revision = 2;
- /* Read the device once, here. It is reused below */
- dev = gd->cur_serial_dev;
- if (dev)
- ret = serial_getinfo(dev, &serial_info);
- if (ret)
- serial_info.type = SERIAL_CHIP_UNKNOWN;
- /* Encode chip type */
- switch (serial_info.type) {
- case SERIAL_CHIP_16550_COMPATIBLE:
- spcr->interface_type = ACPI_DBG2_16550_COMPATIBLE;
- break;
- case SERIAL_CHIP_UNKNOWN:
- default:
- spcr->interface_type = ACPI_DBG2_UNKNOWN;
- break;
- }
- /* Encode address space */
- switch (serial_info.addr_space) {
- case SERIAL_ADDRESS_SPACE_MEMORY:
- space_id = ACPI_ADDRESS_SPACE_MEMORY;
- break;
- case SERIAL_ADDRESS_SPACE_IO:
- default:
- space_id = ACPI_ADDRESS_SPACE_IO;
- break;
- }
- serial_width = serial_info.reg_width * 8;
- serial_offset = serial_info.reg_offset << serial_info.reg_shift;
- serial_address = serial_info.addr + serial_offset;
- /* Encode register access size */
- switch (serial_info.reg_shift) {
- case 0:
- access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
- break;
- case 1:
- access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
- break;
- case 2:
- access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
- break;
- case 3:
- access_size = ACPI_ACCESS_SIZE_QWORD_ACCESS;
- break;
- default:
- access_size = ACPI_ACCESS_SIZE_UNDEFINED;
- break;
- }
- debug("UART type %u @ %lx\n", spcr->interface_type, serial_address);
- /* Fill GAS */
- spcr->serial_port.space_id = space_id;
- spcr->serial_port.bit_width = serial_width;
- spcr->serial_port.bit_offset = 0;
- spcr->serial_port.access_size = access_size;
- spcr->serial_port.addrl = lower_32_bits(serial_address);
- spcr->serial_port.addrh = upper_32_bits(serial_address);
- /* Encode baud rate */
- switch (serial_info.baudrate) {
- case 9600:
- spcr->baud_rate = 3;
- break;
- case 19200:
- spcr->baud_rate = 4;
- break;
- case 57600:
- spcr->baud_rate = 6;
- break;
- case 115200:
- spcr->baud_rate = 7;
- break;
- default:
- spcr->baud_rate = 0;
- break;
- }
- serial_config = SERIAL_DEFAULT_CONFIG;
- if (dev)
- ret = serial_getconfig(dev, &serial_config);
- spcr->parity = SERIAL_GET_PARITY(serial_config);
- spcr->stop_bits = SERIAL_GET_STOP(serial_config);
- /* No PCI devices for now */
- spcr->pci_device_id = 0xffff;
- spcr->pci_vendor_id = 0xffff;
- /*
- * SPCR has no clue if the UART base clock speed is different
- * to the default one. However, the SPCR 1.04 defines baud rate
- * 0 as a preconfigured state of UART and OS is supposed not
- * to touch the configuration of the serial device.
- */
- if (serial_info.clock != SERIAL_DEFAULT_CLOCK)
- spcr->baud_rate = 0;
- /* Fix checksum */
- header->checksum = table_compute_checksum((void *)spcr, header->length);
- }
- static int acpi_create_ssdt(struct acpi_ctx *ctx,
- struct acpi_table_header *ssdt,
- const char *oem_table_id)
- {
- memset((void *)ssdt, '\0', sizeof(struct acpi_table_header));
- acpi_fill_header(ssdt, "SSDT");
- ssdt->revision = acpi_get_table_revision(ACPITAB_SSDT);
- ssdt->aslc_revision = 1;
- ssdt->length = sizeof(struct acpi_table_header);
- acpi_inc(ctx, sizeof(struct acpi_table_header));
- acpi_fill_ssdt(ctx);
- /* (Re)calculate length and checksum */
- ssdt->length = ctx->current - (void *)ssdt;
- ssdt->checksum = table_compute_checksum((void *)ssdt, ssdt->length);
- log_debug("SSDT at %p, length %x\n", ssdt, ssdt->length);
- /* Drop the table if it is empty */
- if (ssdt->length == sizeof(struct acpi_table_header)) {
- ctx->current = ssdt;
- return -ENOENT;
- }
- acpi_align(ctx);
- return 0;
- }
- /*
- * QEMU's version of write_acpi_tables is defined in drivers/misc/qfw.c
- */
- ulong write_acpi_tables(ulong start_addr)
- {
- const int thl = sizeof(struct acpi_table_header);
- struct acpi_ctx *ctx;
- struct acpi_facs *facs;
- struct acpi_table_header *dsdt;
- struct acpi_fadt *fadt;
- struct acpi_table_header *ssdt;
- struct acpi_mcfg *mcfg;
- struct acpi_tcpa *tcpa;
- struct acpi_madt *madt;
- struct acpi_csrt *csrt;
- struct acpi_spcr *spcr;
- void *start;
- int aml_len;
- ulong addr;
- int ret;
- int i;
- ctx = calloc(1, sizeof(*ctx));
- if (!ctx)
- return log_msg_ret("mem", -ENOMEM);
- gd->acpi_ctx = ctx;
- start = map_sysmem(start_addr, 0);
- debug("ACPI: Writing ACPI tables at %lx\n", start_addr);
- acpi_reset_items();
- acpi_setup_base_tables(ctx, start);
- debug("ACPI: * FACS\n");
- facs = ctx->current;
- acpi_inc_align(ctx, sizeof(struct acpi_facs));
- acpi_create_facs(facs);
- debug("ACPI: * DSDT\n");
- dsdt = ctx->current;
- /* Put the table header first */
- memcpy(dsdt, &AmlCode, thl);
- acpi_inc(ctx, thl);
- log_debug("DSDT starts at %p, hdr ends at %p\n", dsdt, ctx->current);
- /* If the table is not empty, allow devices to inject things */
- aml_len = dsdt->length - thl;
- if (aml_len) {
- void *base = ctx->current;
- acpi_inject_dsdt(ctx);
- log_debug("Added %x bytes from inject_dsdt, now at %p\n",
- ctx->current - base, ctx->current);
- log_debug("Copy AML code size %x to %p\n", aml_len,
- ctx->current);
- memcpy(ctx->current, AmlCode + thl, aml_len);
- acpi_inc(ctx, aml_len);
- }
- dsdt->length = ctx->current - (void *)dsdt;
- acpi_align(ctx);
- log_debug("Updated DSDT length to %x, total %x\n", dsdt->length,
- ctx->current - (void *)dsdt);
- if (!IS_ENABLED(CONFIG_ACPI_GNVS_EXTERNAL)) {
- /* Pack GNVS into the ACPI table area */
- for (i = 0; i < dsdt->length; i++) {
- u32 *gnvs = (u32 *)((u32)dsdt + i);
- if (*gnvs == ACPI_GNVS_ADDR) {
- *gnvs = map_to_sysmem(ctx->current);
- debug("Fix up global NVS in DSDT to %#08x\n",
- *gnvs);
- break;
- }
- }
- /*
- * Fill in platform-specific global NVS variables. If this fails
- * we cannot return the error but this should only happen while
- * debugging.
- */
- addr = acpi_create_gnvs(ctx->current);
- if (IS_ERR_VALUE(addr))
- printf("Error: Gailed to create GNVS\n");
- acpi_inc_align(ctx, sizeof(struct acpi_global_nvs));
- }
- /*
- * Recalculate the length and update the DSDT checksum since we patched
- * the GNVS address. Set the checksum to zero since it is part of the
- * region being checksummed.
- */
- dsdt->checksum = 0;
- dsdt->checksum = table_compute_checksum((void *)dsdt, dsdt->length);
- /*
- * Fill in platform-specific global NVS variables. If this fails we
- * cannot return the error but this should only happen while debugging.
- */
- addr = acpi_create_gnvs(ctx->current);
- if (IS_ERR_VALUE(addr))
- printf("Error: Failed to create GNVS\n");
- acpi_inc_align(ctx, sizeof(struct acpi_global_nvs));
- debug("ACPI: * FADT\n");
- fadt = ctx->current;
- acpi_inc_align(ctx, sizeof(struct acpi_fadt));
- acpi_create_fadt(fadt, facs, dsdt);
- acpi_add_table(ctx, fadt);
- debug("ACPI: * SSDT\n");
- ssdt = (struct acpi_table_header *)ctx->current;
- if (!acpi_create_ssdt(ctx, ssdt, OEM_TABLE_ID))
- acpi_add_table(ctx, ssdt);
- debug("ACPI: * MCFG\n");
- mcfg = ctx->current;
- acpi_create_mcfg(mcfg);
- acpi_inc_align(ctx, mcfg->header.length);
- acpi_add_table(ctx, mcfg);
- if (IS_ENABLED(CONFIG_TPM_V2)) {
- struct acpi_tpm2 *tpm2;
- debug("ACPI: * TPM2\n");
- tpm2 = (struct acpi_tpm2 *)ctx->current;
- ret = acpi_create_tpm2(tpm2);
- if (!ret) {
- acpi_inc_align(ctx, tpm2->header.length);
- acpi_add_table(ctx, tpm2);
- } else {
- log_warning("TPM2 table creation failed\n");
- }
- }
- debug("ACPI: * MADT\n");
- madt = ctx->current;
- acpi_create_madt(madt);
- acpi_inc_align(ctx, madt->header.length);
- acpi_add_table(ctx, madt);
- if (IS_ENABLED(CONFIG_TPM_V1)) {
- debug("ACPI: * TCPA\n");
- tcpa = (struct acpi_tcpa *)ctx->current;
- ret = acpi_create_tcpa(tcpa);
- if (ret) {
- log_warning("Failed to create TCPA table (err=%d)\n",
- ret);
- } else {
- acpi_inc_align(ctx, tcpa->header.length);
- acpi_add_table(ctx, tcpa);
- }
- }
- debug("ACPI: * CSRT\n");
- csrt = ctx->current;
- if (!acpi_create_csrt(csrt)) {
- acpi_inc_align(ctx, csrt->header.length);
- acpi_add_table(ctx, csrt);
- }
- debug("ACPI: * SPCR\n");
- spcr = ctx->current;
- acpi_create_spcr(spcr);
- acpi_inc_align(ctx, spcr->header.length);
- acpi_add_table(ctx, spcr);
- acpi_write_dev_tables(ctx);
- addr = map_to_sysmem(ctx->current);
- debug("current = %lx\n", addr);
- acpi_rsdp_addr = (unsigned long)ctx->rsdp;
- debug("ACPI: done\n");
- return addr;
- }
- ulong acpi_get_rsdp_addr(void)
- {
- return acpi_rsdp_addr;
- }
- /**
- * acpi_write_hpet() - Write out a HPET table
- *
- * Write out the table for High-Precision Event Timers
- *
- * @hpet: Place to put HPET table
- */
- static int acpi_create_hpet(struct acpi_hpet *hpet)
- {
- struct acpi_table_header *header = &hpet->header;
- struct acpi_gen_regaddr *addr = &hpet->addr;
- /*
- * See IA-PC HPET (High Precision Event Timers) Specification v1.0a
- * https://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/software-developers-hpet-spec-1-0a.pdf
- */
- memset((void *)hpet, '\0', sizeof(struct acpi_hpet));
- /* Fill out header fields. */
- acpi_fill_header(header, "HPET");
- header->aslc_revision = ASL_REVISION;
- header->length = sizeof(struct acpi_hpet);
- header->revision = acpi_get_table_revision(ACPITAB_HPET);
- /* Fill out HPET address */
- addr->space_id = 0; /* Memory */
- addr->bit_width = 64;
- addr->bit_offset = 0;
- addr->addrl = CONFIG_HPET_ADDRESS & 0xffffffff;
- addr->addrh = ((unsigned long long)CONFIG_HPET_ADDRESS) >> 32;
- hpet->id = *(u32 *)CONFIG_HPET_ADDRESS;
- hpet->number = 0;
- hpet->min_tick = 0; /* HPET_MIN_TICKS */
- header->checksum = table_compute_checksum(hpet,
- sizeof(struct acpi_hpet));
- return 0;
- }
- int acpi_write_hpet(struct acpi_ctx *ctx)
- {
- struct acpi_hpet *hpet;
- int ret;
- log_debug("ACPI: * HPET\n");
- hpet = ctx->current;
- acpi_inc_align(ctx, sizeof(struct acpi_hpet));
- acpi_create_hpet(hpet);
- ret = acpi_add_table(ctx, hpet);
- if (ret)
- return log_msg_ret("add", ret);
- return 0;
- }
- int acpi_write_dbg2_pci_uart(struct acpi_ctx *ctx, struct udevice *dev,
- uint access_size)
- {
- struct acpi_dbg2_header *dbg2 = ctx->current;
- char path[ACPI_PATH_MAX];
- struct acpi_gen_regaddr address;
- phys_addr_t addr;
- int ret;
- if (!device_active(dev)) {
- log_info("Device not enabled\n");
- return -EACCES;
- }
- /*
- * PCI devices don't remember their resource allocation information in
- * U-Boot at present. We assume that MMIO is used for the UART and that
- * the address space is 32 bytes: ns16550 uses 8 registers of up to
- * 32-bits each. This is only for debugging so it is not a big deal.
- */
- addr = dm_pci_read_bar32(dev, 0);
- log_debug("UART addr %lx\n", (ulong)addr);
- memset(&address, '\0', sizeof(address));
- address.space_id = ACPI_ADDRESS_SPACE_MEMORY;
- address.addrl = (uint32_t)addr;
- address.addrh = (uint32_t)((addr >> 32) & 0xffffffff);
- address.access_size = access_size;
- ret = acpi_device_path(dev, path, sizeof(path));
- if (ret)
- return log_msg_ret("path", ret);
- acpi_create_dbg2(dbg2, ACPI_DBG2_SERIAL_PORT,
- ACPI_DBG2_16550_COMPATIBLE, &address, 0x1000, path);
- acpi_inc_align(ctx, dbg2->header.length);
- acpi_add_table(ctx, dbg2);
- return 0;
- }
- void acpi_fadt_common(struct acpi_fadt *fadt, struct acpi_facs *facs,
- void *dsdt)
- {
- struct acpi_table_header *header = &fadt->header;
- memset((void *)fadt, '\0', sizeof(struct acpi_fadt));
- acpi_fill_header(header, "FACP");
- header->length = sizeof(struct acpi_fadt);
- header->revision = 4;
- memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
- memcpy(header->aslc_id, ASLC_ID, 4);
- header->aslc_revision = 1;
- fadt->firmware_ctrl = (unsigned long)facs;
- fadt->dsdt = (unsigned long)dsdt;
- fadt->x_firmware_ctl_l = (unsigned long)facs;
- fadt->x_firmware_ctl_h = 0;
- fadt->x_dsdt_l = (unsigned long)dsdt;
- fadt->x_dsdt_h = 0;
- fadt->preferred_pm_profile = ACPI_PM_MOBILE;
- /* Use ACPI 3.0 revision */
- fadt->header.revision = 4;
- }
- void acpi_create_dmar_drhd(struct acpi_ctx *ctx, uint flags, uint segment,
- u64 bar)
- {
- struct dmar_entry *drhd = ctx->current;
- memset(drhd, '\0', sizeof(*drhd));
- drhd->type = DMAR_DRHD;
- drhd->length = sizeof(*drhd); /* will be fixed up later */
- drhd->flags = flags;
- drhd->segment = segment;
- drhd->bar = bar;
- acpi_inc(ctx, drhd->length);
- }
- void acpi_create_dmar_rmrr(struct acpi_ctx *ctx, uint segment, u64 bar,
- u64 limit)
- {
- struct dmar_rmrr_entry *rmrr = ctx->current;
- memset(rmrr, '\0', sizeof(*rmrr));
- rmrr->type = DMAR_RMRR;
- rmrr->length = sizeof(*rmrr); /* will be fixed up later */
- rmrr->segment = segment;
- rmrr->bar = bar;
- rmrr->limit = limit;
- acpi_inc(ctx, rmrr->length);
- }
- void acpi_dmar_drhd_fixup(struct acpi_ctx *ctx, void *base)
- {
- struct dmar_entry *drhd = base;
- drhd->length = ctx->current - base;
- }
- void acpi_dmar_rmrr_fixup(struct acpi_ctx *ctx, void *base)
- {
- struct dmar_rmrr_entry *rmrr = base;
- rmrr->length = ctx->current - base;
- }
- static int acpi_create_dmar_ds(struct acpi_ctx *ctx, enum dev_scope_type type,
- uint enumeration_id, pci_dev_t bdf)
- {
- /* we don't support longer paths yet */
- const size_t dev_scope_length = sizeof(struct dev_scope) + 2;
- struct dev_scope *ds = ctx->current;
- memset(ds, '\0', dev_scope_length);
- ds->type = type;
- ds->length = dev_scope_length;
- ds->enumeration = enumeration_id;
- ds->start_bus = PCI_BUS(bdf);
- ds->path[0].dev = PCI_DEV(bdf);
- ds->path[0].fn = PCI_FUNC(bdf);
- return ds->length;
- }
- int acpi_create_dmar_ds_pci_br(struct acpi_ctx *ctx, pci_dev_t bdf)
- {
- return acpi_create_dmar_ds(ctx, SCOPE_PCI_SUB, 0, bdf);
- }
- int acpi_create_dmar_ds_pci(struct acpi_ctx *ctx, pci_dev_t bdf)
- {
- return acpi_create_dmar_ds(ctx, SCOPE_PCI_ENDPOINT, 0, bdf);
- }
- int acpi_create_dmar_ds_ioapic(struct acpi_ctx *ctx, uint enumeration_id,
- pci_dev_t bdf)
- {
- return acpi_create_dmar_ds(ctx, SCOPE_IOAPIC, enumeration_id, bdf);
- }
- int acpi_create_dmar_ds_msi_hpet(struct acpi_ctx *ctx, uint enumeration_id,
- pci_dev_t bdf)
- {
- return acpi_create_dmar_ds(ctx, SCOPE_MSI_HPET, enumeration_id, bdf);
- }
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