diff options
Diffstat (limited to 'lib/acpi/acpi_table.c')
| -rw-r--r-- | lib/acpi/acpi_table.c | 630 |
1 files changed, 594 insertions, 36 deletions
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c index 6dbfdb22dec..6473d95c102 100644 --- a/lib/acpi/acpi_table.c +++ b/lib/acpi/acpi_table.c @@ -5,15 +5,28 @@ * Copyright 2019 Google LLC */ -#include <dm.h> +#include <bloblist.h> #include <cpu.h> +#include <dm.h> +#include <efi_api.h> +#include <efi_loader.h> #include <log.h> #include <mapmem.h> #include <tables_csum.h> +#include <serial.h> #include <version_string.h> #include <acpi/acpi_table.h> +#include <acpi/acpi_device.h> #include <asm/global_data.h> #include <dm/acpi.h> +#include <linux/sizes.h> +#include <linux/log2.h> + +enum { + TABLE_SIZE = SZ_64K, +}; + +DECLARE_GLOBAL_DATA_PTR; /* * OEM_REVISION is 32-bit unsigned number. It should be increased only when @@ -61,9 +74,9 @@ int acpi_get_table_revision(enum acpi_tables table) { switch (table) { case ACPITAB_FADT: - return ACPI_FADT_REV_ACPI_3_0; + return ACPI_FADT_REV_ACPI_6_0; case ACPITAB_MADT: - return ACPI_MADT_REV_ACPI_3_0; + return ACPI_MADT_REV_ACPI_6_2; case ACPITAB_MCFG: return ACPI_MCFG_REV_ACPI_3_0; case ACPITAB_TCPA: @@ -105,6 +118,10 @@ int acpi_get_table_revision(enum acpi_tables table) return 1; case ACPITAB_SPCR: return 2; + case ACPITAB_PPTT: /* ACPI 6.2: 1 */ + return 1; + case ACPITAB_GTDT: /* ACPI 6.2: 2, ACPI 6.3: 3 */ + return 2; default: return -EINVAL; } @@ -151,55 +168,148 @@ int acpi_add_table(struct acpi_ctx *ctx, void *table) struct acpi_rsdt *rsdt; struct acpi_xsdt *xsdt; - /* The RSDT is mandatory while the XSDT is not */ - rsdt = ctx->rsdt; + /* On legacy x86 platforms the RSDT is mandatory while the XSDT is not. + * On other platforms there might be no memory below 4GiB, thus RSDT is NULL. + */ + if (ctx->rsdt) { + rsdt = ctx->rsdt; + + /* This should always be MAX_ACPI_TABLES */ + entries_num = ARRAY_SIZE(rsdt->entry); + + for (i = 0; i < entries_num; i++) { + if (rsdt->entry[i] == 0) + break; + } + + if (i >= entries_num) { + log_err("ACPI: Error: too many tables\n"); + return -E2BIG; + } + + /* Add table to the RSDT */ + rsdt->entry[i] = nomap_to_sysmem(table); - /* This should always be MAX_ACPI_TABLES */ - entries_num = ARRAY_SIZE(rsdt->entry); + /* Fix RSDT length or the kernel will assume invalid entries */ + rsdt->header.length = sizeof(struct acpi_table_header) + + (sizeof(u32) * (i + 1)); - for (i = 0; i < entries_num; i++) { - if (rsdt->entry[i] == 0) - break; + /* Re-calculate checksum */ + rsdt->header.checksum = 0; + rsdt->header.checksum = table_compute_checksum((u8 *)rsdt, + rsdt->header.length); } - if (i >= entries_num) { - log_err("ACPI: Error: too many tables\n"); - return -E2BIG; + if (ctx->xsdt) { + /* + * And now the same thing for the XSDT. We use the same index as for + * now we want the XSDT and RSDT to always be in sync in U-Boot + */ + xsdt = ctx->xsdt; + + /* This should always be MAX_ACPI_TABLES */ + entries_num = ARRAY_SIZE(xsdt->entry); + + for (i = 0; i < entries_num; i++) { + if (xsdt->entry[i] == 0) + break; + } + + if (i >= entries_num) { + log_err("ACPI: Error: too many tables\n"); + return -E2BIG; + } + + /* Add table to the XSDT */ + xsdt->entry[i] = nomap_to_sysmem(table); + + /* Fix XSDT length */ + xsdt->header.length = sizeof(struct acpi_table_header) + + (sizeof(u64) * (i + 1)); + + /* Re-calculate checksum */ + xsdt->header.checksum = 0; + xsdt->header.checksum = table_compute_checksum((u8 *)xsdt, + xsdt->header.length); } - /* Add table to the RSDT */ - rsdt->entry[i] = nomap_to_sysmem(table); + return 0; +} - /* Fix RSDT length or the kernel will assume invalid entries */ - rsdt->header.length = sizeof(struct acpi_table_header) + - (sizeof(u32) * (i + 1)); +int acpi_write_fadt(struct acpi_ctx *ctx, const struct acpi_writer *entry) +{ + struct acpi_table_header *header; + struct acpi_fadt *fadt; - /* Re-calculate checksum */ - rsdt->header.checksum = 0; - rsdt->header.checksum = table_compute_checksum((u8 *)rsdt, - rsdt->header.length); + fadt = ctx->current; + header = &fadt->header; - /* - * And now the same thing for the XSDT. We use the same index as for - * now we want the XSDT and RSDT to always be in sync in U-Boot - */ - xsdt = ctx->xsdt; + memset((void *)fadt, '\0', sizeof(struct acpi_fadt)); + + acpi_fill_header(header, "FACP"); + header->length = sizeof(struct acpi_fadt); + header->revision = acpi_get_table_revision(ACPITAB_FADT); + memcpy(header->oem_id, OEM_ID, 6); + memcpy(header->oem_table_id, OEM_TABLE_ID, 8); + memcpy(header->creator_id, ASLC_ID, 4); + header->creator_revision = 1; + fadt->minor_revision = 2; - /* Add table to the XSDT */ - xsdt->entry[i] = nomap_to_sysmem(table); + fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs); + fadt->x_dsdt = map_to_sysmem(ctx->dsdt); - /* Fix XSDT length */ - xsdt->header.length = sizeof(struct acpi_table_header) + - (sizeof(u64) * (i + 1)); + if (fadt->x_firmware_ctrl < 0x100000000ULL) + fadt->firmware_ctrl = fadt->x_firmware_ctrl; - /* Re-calculate checksum */ - xsdt->header.checksum = 0; - xsdt->header.checksum = table_compute_checksum((u8 *)xsdt, - xsdt->header.length); + if (fadt->x_dsdt < 0x100000000ULL) + fadt->dsdt = fadt->x_dsdt; + + fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED; + + acpi_fill_fadt(fadt); + + header->checksum = table_compute_checksum(fadt, header->length); + + return acpi_add_fadt(ctx, fadt); +} + +ACPI_WRITER(5fadt, "FADT", acpi_write_fadt, 0); + +int acpi_write_madt(struct acpi_ctx *ctx, const struct acpi_writer *entry) +{ + struct acpi_table_header *header; + struct acpi_madt *madt; + void *current; + + madt = ctx->current; + + memset(madt, '\0', sizeof(struct acpi_madt)); + header = &madt->header; + + /* Fill out header fields */ + acpi_fill_header(header, "APIC"); + header->length = sizeof(struct acpi_madt); + header->revision = acpi_get_table_revision(ACPITAB_MADT); + + acpi_inc(ctx, sizeof(struct acpi_madt)); + /* TODO: Get rid of acpi_fill_madt and use driver model */ + current = acpi_fill_madt(madt, ctx); + + /* (Re)calculate length and checksum */ + header->length = (uintptr_t)current - (uintptr_t)madt; + + if (IS_ENABLED(CONFIG_ACPI_PARKING_PROTOCOL)) + acpi_write_park(madt); + + header->checksum = table_compute_checksum((void *)madt, header->length); + acpi_add_table(ctx, madt); + ctx->current = (void *)madt + madt->header.length; return 0; } +ACPI_WRITER(5madt, "MADT", acpi_write_madt, 0); + void acpi_create_dbg2(struct acpi_dbg2_header *dbg2, int port_type, int port_subtype, struct acpi_gen_regaddr *address, u32 address_size, @@ -262,3 +372,451 @@ void acpi_create_dbg2(struct acpi_dbg2_header *dbg2, header->length = current - (uintptr_t)dbg2; header->checksum = table_compute_checksum(dbg2, header->length); } + +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; + u64 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); + + ret = acpi_device_path(dev, path, sizeof(path)); + if (ret) + return log_msg_ret("path", ret); + + 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; +} + +static int acpi_write_spcr(struct acpi_ctx *ctx, const struct acpi_writer *entry) +{ + struct serial_device_info serial_info = {0}; + ulong serial_address, serial_offset; + struct acpi_table_header *header; + struct acpi_spcr *spcr; + struct udevice *dev; + uint serial_config; + uint serial_width; + int access_size; + int space_id; + int ret = -ENODEV; + + spcr = ctx->current; + header = &spcr->header; + + memset(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_PL01X: + spcr->interface_type = ACPI_DBG2_ARM_PL011; + 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); + + acpi_add_table(ctx, spcr); + acpi_inc(ctx, spcr->header.length); + + return 0; +} + +ACPI_WRITER(5spcr, "SPCR", acpi_write_spcr, 0); + +__weak int acpi_fill_iort(struct acpi_ctx *ctx) +{ + return 0; +} + +int acpi_iort_add_its_group(struct acpi_ctx *ctx, + const u32 its_count, + const u32 *identifiers) +{ + struct acpi_iort_node *node; + struct acpi_iort_its_group *group; + int offset; + + offset = ctx->current - ctx->tab_start; + + node = ctx->current; + memset(node, '\0', sizeof(struct acpi_iort_node)); + + node->type = ACPI_IORT_NODE_ITS_GROUP; + node->revision = 1; + + node->length = sizeof(struct acpi_iort_node); + node->length += sizeof(struct acpi_iort_its_group); + node->length += sizeof(u32) * its_count; + + group = (struct acpi_iort_its_group *)node->node_data; + group->its_count = its_count; + memcpy(&group->identifiers, identifiers, sizeof(u32) * its_count); + + ctx->current += node->length; + + return offset; +} + +int acpi_iort_add_named_component(struct acpi_ctx *ctx, + const u32 node_flags, + const u64 memory_properties, + const u8 memory_address_limit, + const char *device_name) +{ + struct acpi_iort_node *node; + struct acpi_iort_named_component *comp; + int offset; + + offset = ctx->current - ctx->tab_start; + + node = ctx->current; + memset(node, '\0', sizeof(struct acpi_iort_node)); + + node->type = ACPI_IORT_NODE_NAMED_COMPONENT; + node->revision = 4; + node->length = sizeof(struct acpi_iort_node); + node->length += sizeof(struct acpi_iort_named_component); + node->length += strlen(device_name) + 1; + + comp = (struct acpi_iort_named_component *)node->node_data; + + comp->node_flags = node_flags; + comp->memory_properties = memory_properties; + comp->memory_address_limit = memory_address_limit; + memcpy(comp->device_name, device_name, strlen(device_name) + 1); + + ctx->current += node->length; + + return offset; +} + +int acpi_iort_add_rc(struct acpi_ctx *ctx, + const u64 mem_access_properties, + const u32 ats_attributes, + const u32 pci_segment_number, + const u8 memory_address_size_limit, + const int num_mappings, + const struct acpi_iort_id_mapping *map) +{ + struct acpi_iort_id_mapping *mapping; + struct acpi_iort_node *node; + struct acpi_iort_rc *rc; + int offset; + + offset = ctx->current - ctx->tab_start; + + node = ctx->current; + memset(node, '\0', sizeof(struct acpi_iort_node)); + + node->type = ACPI_IORT_NODE_PCI_ROOT_COMPLEX; + node->revision = 2; + + node->length = sizeof(struct acpi_iort_node); + node->length += sizeof(struct acpi_iort_rc); + node->length += sizeof(struct acpi_iort_id_mapping) * num_mappings; + + rc = (struct acpi_iort_rc *)node->node_data; + rc->mem_access_properties = mem_access_properties; + rc->ats_attributes = ats_attributes; + rc->pci_segment_number = pci_segment_number; + rc->memory_address_size_limit = memory_address_size_limit; + + mapping = (struct acpi_iort_id_mapping *)(rc + 1); + for (int i = 0; i < num_mappings; i++) { + memcpy(mapping, &map[i], sizeof(struct acpi_iort_id_mapping)); + mapping++; + } + + ctx->current += node->length; + + return offset; +} + +int acpi_iort_add_smmu_v3(struct acpi_ctx *ctx, + const u64 base_address, + const u32 flags, + const u64 vatos_address, + const u32 model, + const u32 event_gsiv, + const u32 pri_gsiv, + const u32 gerr_gsiv, + const u32 sync_gsiv, + const u32 pxm, + const u32 id_mapping_index, + const int num_mappings, + const struct acpi_iort_id_mapping *map) +{ + struct acpi_iort_node *node; + struct acpi_iort_smmu_v3 *smmu; + struct acpi_iort_id_mapping *mapping; + int offset; + + offset = ctx->current - ctx->tab_start; + + node = ctx->current; + memset(node, '\0', sizeof(struct acpi_iort_node)); + + node->type = ACPI_IORT_NODE_SMMU_V3; + node->revision = 5; + node->mapping_count = num_mappings; + node->mapping_offset = sizeof(struct acpi_iort_node) + sizeof(struct acpi_iort_smmu_v3); + + node->length = sizeof(struct acpi_iort_node); + node->length += sizeof(struct acpi_iort_smmu_v3); + node->length += sizeof(struct acpi_iort_id_mapping) * num_mappings; + + smmu = (struct acpi_iort_smmu_v3 *)node->node_data; + + smmu->base_address = base_address; + smmu->flags = flags; + smmu->vatos_address = vatos_address; + smmu->model = model; + smmu->event_gsiv = event_gsiv; + smmu->pri_gsiv = pri_gsiv; + smmu->gerr_gsiv = gerr_gsiv; + smmu->sync_gsiv = sync_gsiv; + smmu->pxm = pxm; + smmu->id_mapping_index = id_mapping_index; + + mapping = (struct acpi_iort_id_mapping *)(smmu + 1); + for (int i = 0; i < num_mappings; i++) { + memcpy(mapping, &map[i], sizeof(struct acpi_iort_id_mapping)); + mapping++; + } + + ctx->current += node->length; + + return offset; +} + +static int acpi_write_iort(struct acpi_ctx *ctx, const struct acpi_writer *entry) +{ + struct acpi_table_iort *iort; + struct acpi_iort_node *node; + u32 offset; + int ret; + + iort = ctx->current; + ctx->tab_start = ctx->current; + memset(iort, '\0', sizeof(struct acpi_table_iort)); + + acpi_fill_header(&iort->header, "IORT"); + iort->header.revision = 1; + iort->header.creator_revision = 1; + iort->header.length = sizeof(struct acpi_table_iort); + iort->node_offset = sizeof(struct acpi_table_iort); + + acpi_inc(ctx, sizeof(struct acpi_table_iort)); + + offset = sizeof(struct acpi_table_iort); + ret = acpi_fill_iort(ctx); + if (ret) { + ctx->current = iort; + return log_msg_ret("fill", ret); + } + + /* Count nodes filled in */ + for (node = (void *)iort + iort->node_offset; + node->length > 0 && (void *)node < ctx->current; + node = (void *)node + node->length) + iort->node_count++; + + /* (Re)calculate length and checksum */ + iort->header.length = ctx->current - (void *)iort; + iort->header.checksum = table_compute_checksum((void *)iort, iort->header.length); + log_debug("IORT at %p, length %x\n", iort, iort->header.length); + + /* Drop the table if it is empty */ + if (iort->header.length == sizeof(struct acpi_table_iort)) + return log_msg_ret("fill", -ENOENT); + acpi_add_table(ctx, iort); + + return 0; +} + +ACPI_WRITER(5iort, "IORT", acpi_write_iort, 0); + +/* + * Allocate memory for ACPI tables and write ACPI tables to the + * allocated buffer. + * + * Return: status code + */ +static int alloc_write_acpi_tables(void) +{ + u64 table_end; + void *addr; + + if (IS_ENABLED(CONFIG_X86) || + IS_ENABLED(CONFIG_QFW_ACPI) || + IS_ENABLED(CONFIG_SANDBOX)) { + log_debug("Skipping writing ACPI tables as already done\n"); + return 0; + } + + if (!IS_ENABLED(CONFIG_BLOBLIST_TABLES)) { + log_debug("Skipping writing ACPI tables as BLOBLIST_TABLES is not selected\n"); + return 0; + } + + /* Align the table to a 4KB boundary to keep EFI happy */ + addr = bloblist_add(BLOBLISTT_ACPI_TABLES, TABLE_SIZE, + ilog2(SZ_4K)); + + if (!addr) + return log_msg_ret("mem", -ENOMEM); + + gd->arch.table_start_high = virt_to_phys(addr); + gd->arch.table_end_high = gd->arch.table_start_high + TABLE_SIZE; + + table_end = write_acpi_tables(gd->arch.table_start_high); + if (!table_end) { + log_err("Can't create ACPI configuration table\n"); + return -EINTR; + } + + log_debug("- wrote 'acpi' to %lx, end %llx\n", gd->arch.table_start_high, table_end); + if (table_end > gd->arch.table_end_high) { + log_err("Out of space for configuration tables: need %llx, have %x\n", + table_end - gd->arch.table_start_high, TABLE_SIZE); + return log_msg_ret("acpi", -ENOSPC); + } + + log_debug("- done writing tables\n"); + + return 0; +} + +EVENT_SPY_SIMPLE(EVT_LAST_STAGE_INIT, alloc_write_acpi_tables); |