diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig | 11 | ||||
| -rw-r--r-- | lib/acpi/acpi.c | 20 | ||||
| -rw-r--r-- | lib/acpi/base.c | 23 | ||||
| -rw-r--r-- | lib/acpi/ssdt.c | 3 | ||||
| -rw-r--r-- | lib/efi_loader/Kconfig | 15 | ||||
| -rw-r--r-- | lib/efi_loader/Makefile | 2 | ||||
| -rw-r--r-- | lib/efi_loader/efi_bootmgr.c | 911 | ||||
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 7 | ||||
| -rw-r--r-- | lib/efi_loader/efi_disk.c | 18 | ||||
| -rw-r--r-- | lib/efi_loader/efi_dt_fixup.c | 2 | ||||
| -rw-r--r-- | lib/efi_loader/efi_setup.c | 7 | ||||
| -rw-r--r-- | lib/slre.c | 1 |
12 files changed, 998 insertions, 22 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index d47df6bb1c..37ac14f7ba 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -74,6 +74,13 @@ config HAVE_PRIVATE_LIBGCC config LIB_UUID bool +config RANDOM_UUID + bool "GPT Random UUID generation" + select LIB_UUID + help + Enable the generation of partitions with random UUIDs if none + are provided. + config SPL_LIB_UUID depends on SPL bool @@ -93,7 +100,7 @@ config SEMIHOSTING config SEMIHOSTING_FALLBACK bool "Recover gracefully when semihosting fails" - depends on SEMIHOSTING && (ARM64 || RISCV) + depends on SEMIHOSTING default y help Normally, if U-Boot makes a semihosting call and no debugger is @@ -116,7 +123,7 @@ config SPL_SEMIHOSTING config SPL_SEMIHOSTING_FALLBACK bool "Recover gracefully when semihosting fails in SPL" - depends on SPL_SEMIHOSTING && (ARM64 || RISCV) + depends on SPL_SEMIHOSTING select ARMV8_SPL_EXCEPTION_VECTORS if ARM64 default y help diff --git a/lib/acpi/acpi.c b/lib/acpi/acpi.c index 14b15754f4..f21e509461 100644 --- a/lib/acpi/acpi.c +++ b/lib/acpi/acpi.c @@ -16,18 +16,30 @@ struct acpi_table_header *acpi_find_table(const char *sig) { struct acpi_rsdp *rsdp; struct acpi_rsdt *rsdt; + struct acpi_xsdt *xsdt; int len, i, count; rsdp = map_sysmem(gd_acpi_start(), 0); if (!rsdp) return NULL; - rsdt = map_sysmem(rsdp->rsdt_address, 0); - len = rsdt->header.length - sizeof(rsdt->header); - count = len / sizeof(u32); + if (rsdp->xsdt_address) { + xsdt = map_sysmem(rsdp->xsdt_address, 0); + len = xsdt->header.length - sizeof(xsdt->header); + count = len / sizeof(u64); + } else { + if (!rsdp->rsdt_address) + return NULL; + rsdt = map_sysmem(rsdp->rsdt_address, 0); + len = rsdt->header.length - sizeof(rsdt->header); + count = len / sizeof(u32); + } for (i = 0; i < count; i++) { struct acpi_table_header *hdr; - hdr = map_sysmem(rsdt->entry[i], 0); + if (rsdp->xsdt_address) + hdr = map_sysmem(xsdt->entry[i], 0); + else + hdr = map_sysmem(rsdt->entry[i], 0); if (!memcmp(hdr->signature, sig, ACPI_NAME_LEN)) return hdr; if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN)) { diff --git a/lib/acpi/base.c b/lib/acpi/base.c index 2057bd2bef..26bf0cb8d3 100644 --- a/lib/acpi/base.c +++ b/lib/acpi/base.c @@ -12,6 +12,7 @@ #include <dm/acpi.h> #include <mapmem.h> #include <tables_csum.h> +#include <linux/sizes.h> void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt, struct acpi_xsdt *xsdt) @@ -21,10 +22,13 @@ void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt, memcpy(rsdp->signature, RSDP_SIG, 8); memcpy(rsdp->oem_id, OEM_ID, 6); - rsdp->length = sizeof(struct acpi_rsdp); - rsdp->rsdt_address = map_to_sysmem(rsdt); + if (rsdt) + rsdp->rsdt_address = map_to_sysmem(rsdt); + + if (xsdt) + rsdp->xsdt_address = map_to_sysmem(xsdt); - rsdp->xsdt_address = map_to_sysmem(xsdt); + rsdp->length = sizeof(struct acpi_rsdp); rsdp->revision = ACPI_RSDP_REV_ACPI_2_0; /* Calculate checksums */ @@ -68,11 +72,15 @@ static void acpi_write_xsdt(struct acpi_xsdt *xsdt) static int acpi_write_base(struct acpi_ctx *ctx, const struct acpi_writer *entry) { - /* We need at least an RSDP and an RSDT Table */ + /* We need at least an RSDP and an XSDT Table */ ctx->rsdp = ctx->current; acpi_inc_align(ctx, sizeof(struct acpi_rsdp)); - ctx->rsdt = ctx->current; - acpi_inc_align(ctx, sizeof(struct acpi_rsdt)); + if (map_to_sysmem(ctx->current) < SZ_4G - SZ_64K) { + ctx->rsdt = ctx->current; + acpi_inc_align(ctx, sizeof(struct acpi_rsdt)); + } else { + ctx->rsdt = 0; + } ctx->xsdt = ctx->current; acpi_inc_align(ctx, sizeof(struct acpi_xsdt)); @@ -80,7 +88,8 @@ static int acpi_write_base(struct acpi_ctx *ctx, memset(ctx->base, '\0', ctx->current - ctx->base); acpi_write_rsdp(ctx->rsdp, ctx->rsdt, ctx->xsdt); - acpi_write_rsdt(ctx->rsdt); + if (ctx->rsdt) + acpi_write_rsdt(ctx->rsdt); acpi_write_xsdt(ctx->xsdt); return 0; diff --git a/lib/acpi/ssdt.c b/lib/acpi/ssdt.c index 659c1aad40..b140b4b2ff 100644 --- a/lib/acpi/ssdt.c +++ b/lib/acpi/ssdt.c @@ -18,10 +18,9 @@ int acpi_write_ssdt(struct acpi_ctx *ctx, const struct acpi_writer *entry) int ret; ssdt = ctx->current; - memset((void *)ssdt, '\0', sizeof(struct acpi_table_header)); + memset(ssdt, '\0', sizeof(struct acpi_table_header)); acpi_fill_header(ssdt, "SSDT"); - memcpy(ssdt->oem_table_id, OEM_TABLE_ID, sizeof(ssdt->oem_table_id)); ssdt->revision = acpi_get_table_revision(ACPITAB_SSDT); ssdt->aslc_revision = 1; ssdt->length = sizeof(struct acpi_table_header); diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig index 2e3935467c..ea807342f0 100644 --- a/lib/efi_loader/Kconfig +++ b/lib/efi_loader/Kconfig @@ -32,14 +32,14 @@ config EFI_LOADER if EFI_LOADER -config CMD_BOOTEFI_BOOTMGR +config BOOTEFI_BOOTMGR bool "UEFI Boot Manager" default y select BOOTMETH_GLOBAL if BOOTSTD help Select this option if you want to select the UEFI binary to be booted - via UEFI variables Boot####, BootOrder, and BootNext. This enables the - 'bootefi bootmgr' command. + via UEFI variables Boot####, BootOrder, and BootNext. You should also + normally enable CMD_BOOTEFI_BOOTMGR so that the command is available. choice prompt "Store for non-volatile UEFI variables" @@ -479,4 +479,13 @@ config EFI_RISCV_BOOT_PROTOCOL replace the transfer via the device-tree. The latter is not possible on systems using ACPI. +config EFI_HTTP_BOOT + bool "EFI HTTP Boot support" + select CMD_DNS + select CMD_WGET + select BLKMAP + help + Enabling this option adds EFI HTTP Boot support. It allows to + directly boot from network. + endif diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile index d476df112b..24d33d5409 100644 --- a/lib/efi_loader/Makefile +++ b/lib/efi_loader/Makefile @@ -42,7 +42,7 @@ targets += initrddump.o endif obj-$(CONFIG_CMD_BOOTEFI_HELLO) += helloworld_efi.o -obj-$(CONFIG_CMD_BOOTEFI_BOOTMGR) += efi_bootmgr.o +obj-$(CONFIG_BOOTEFI_BOOTMGR) += efi_bootmgr.o obj-y += efi_boottime.o obj-y += efi_helper.o obj-$(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) += efi_capsule.o diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c index a40762c74c..e815fa06c8 100644 --- a/lib/efi_loader/efi_bootmgr.c +++ b/lib/efi_loader/efi_bootmgr.c @@ -3,22 +3,56 @@ * EFI boot manager * * Copyright (c) 2017 Rob Clark + * For the code moved from cmd/bootefi.c + * Copyright (c) 2016 Alexander Graf */ #define LOG_CATEGORY LOGC_EFI +#include <blk.h> +#include <blkmap.h> #include <common.h> #include <charset.h> +#include <dm.h> #include <log.h> #include <malloc.h> +#include <net.h> #include <efi_default_filename.h> #include <efi_loader.h> #include <efi_variable.h> #include <asm/unaligned.h> +/* TODO: temporarily added here; clean up later */ +#include <bootm.h> +#include <efi_selftest.h> +#include <env.h> +#include <mapmem.h> +#include <asm/global_data.h> +#include <linux/libfdt.h> +#include <linux/libfdt_env.h> + +DECLARE_GLOBAL_DATA_PTR; + static const struct efi_boot_services *bs; static const struct efi_runtime_services *rs; +/** + * struct uridp_context - uri device path resource + * + * @image_size: image size + * @image_addr: image address + * @loaded_dp: pointer to loaded device path + * @ramdisk_blk_dev: pointer to the ramdisk blk device + * @mem_handle: efi_handle to the loaded PE-COFF image + */ +struct uridp_context { + ulong image_size; + ulong image_addr; + struct efi_device_path *loaded_dp; + struct udevice *ramdisk_blk_dev; + efi_handle_t mem_handle; +}; + const efi_guid_t efi_guid_bootmenu_auto_generated = EFICONFIG_AUTO_GENERATED_ENTRY_GUID; @@ -169,6 +203,364 @@ out: } /** + * mount_image() - mount the image with blkmap + * + * @lo_label: u16 label string of load option + * @addr: image address + * @size: image size + * Return: pointer to the UCLASS_BLK udevice, NULL if failed + */ +static struct udevice *mount_image(u16 *lo_label, ulong addr, ulong size) +{ + int err; + struct blkmap *bm; + struct udevice *bm_dev; + char *label = NULL, *p; + + label = efi_alloc(utf16_utf8_strlen(lo_label) + 1); + if (!label) + return NULL; + + p = label; + utf16_utf8_strcpy(&p, lo_label); + err = blkmap_create_ramdisk(label, addr, size, &bm_dev); + if (err) { + efi_free_pool(label); + return NULL; + } + bm = dev_get_plat(bm_dev); + + efi_free_pool(label); + + return bm->blk; +} + +/** + * search_default_file() - search default file + * + * @dev: pointer to the UCLASS_BLK or UCLASS_PARTITION udevice + * @loaded_dp: pointer to default file device path + * Return: status code + */ +static efi_status_t search_default_file(struct udevice *dev, + struct efi_device_path **loaded_dp) +{ + efi_status_t ret; + efi_handle_t handle; + u16 *default_file_name = NULL; + struct efi_file_handle *root, *f; + struct efi_device_path *dp = NULL, *fp = NULL; + struct efi_simple_file_system_protocol *file_system; + struct efi_device_path *device_path, *full_path = NULL; + + if (dev_tag_get_ptr(dev, DM_TAG_EFI, (void **)&handle)) { + log_warning("DM_TAG_EFI not found\n"); + return EFI_INVALID_PARAMETER; + } + + ret = EFI_CALL(bs->open_protocol(handle, &efi_guid_device_path, + (void **)&device_path, efi_root, NULL, + EFI_OPEN_PROTOCOL_GET_PROTOCOL)); + if (ret != EFI_SUCCESS) + return ret; + + ret = EFI_CALL(bs->open_protocol(handle, &efi_simple_file_system_protocol_guid, + (void **)&file_system, efi_root, NULL, + EFI_OPEN_PROTOCOL_GET_PROTOCOL)); + if (ret != EFI_SUCCESS) + return ret; + + ret = EFI_CALL(file_system->open_volume(file_system, &root)); + if (ret != EFI_SUCCESS) + return ret; + + full_path = expand_media_path(device_path); + ret = efi_dp_split_file_path(full_path, &dp, &fp); + if (ret != EFI_SUCCESS) + goto err; + + default_file_name = efi_dp_str(fp); + efi_free_pool(dp); + efi_free_pool(fp); + if (!default_file_name) { + ret = EFI_OUT_OF_RESOURCES; + goto err; + } + + ret = EFI_CALL(root->open(root, &f, default_file_name, + EFI_FILE_MODE_READ, 0)); + efi_free_pool(default_file_name); + if (ret != EFI_SUCCESS) + goto err; + + EFI_CALL(f->close(f)); + EFI_CALL(root->close(root)); + + *loaded_dp = full_path; + + return EFI_SUCCESS; + +err: + EFI_CALL(root->close(root)); + efi_free_pool(full_path); + + return ret; +} + +/** + * check_disk_has_default_file() - load the default file + * + * @blk: pointer to the UCLASS_BLK udevice + * @dp: pointer to default file device path + * Return: status code + */ +static efi_status_t check_disk_has_default_file(struct udevice *blk, + struct efi_device_path **dp) +{ + efi_status_t ret; + struct udevice *partition; + + /* image that has no partition table but a file system */ + ret = search_default_file(blk, dp); + if (ret == EFI_SUCCESS) + return ret; + + /* try the partitions */ + device_foreach_child(partition, blk) { + enum uclass_id id; + + id = device_get_uclass_id(partition); + if (id != UCLASS_PARTITION) + continue; + + ret = search_default_file(partition, dp); + if (ret == EFI_SUCCESS) + return ret; + } + + return EFI_NOT_FOUND; +} + +/** + * prepare_loaded_image() - prepare ramdisk for downloaded image + * + * @label: label of load option + * @addr: image address + * @size: image size + * @dp: pointer to default file device path + * @blk: pointer to created blk udevice + * Return: status code + */ +static efi_status_t prepare_loaded_image(u16 *label, ulong addr, ulong size, + struct efi_device_path **dp, + struct udevice **blk) +{ + efi_status_t ret; + struct udevice *ramdisk_blk; + + ramdisk_blk = mount_image(label, addr, size); + if (!ramdisk_blk) + return EFI_LOAD_ERROR; + + ret = check_disk_has_default_file(ramdisk_blk, dp); + if (ret != EFI_SUCCESS) { + log_info("Cannot boot from downloaded image\n"); + goto err; + } + + /* + * TODO: expose the ramdisk to OS. + * Need to pass the ramdisk information by the architecture-specific + * methods such as 'pmem' device-tree node. + */ + ret = efi_add_memory_map(addr, size, EFI_RESERVED_MEMORY_TYPE); + if (ret != EFI_SUCCESS) { + log_err("Memory reservation failed\n"); + goto err; + } + + *blk = ramdisk_blk; + + return EFI_SUCCESS; + +err: + if (blkmap_destroy(ramdisk_blk->parent)) + log_err("Destroying blkmap failed\n"); + + return ret; +} + +/** + * efi_bootmgr_release_uridp_resource() - cleanup uri device path resource + * + * @ctx: event context + * Return: status code + */ +efi_status_t efi_bootmgr_release_uridp_resource(struct uridp_context *ctx) +{ + efi_status_t ret = EFI_SUCCESS; + + if (!ctx) + return ret; + + /* cleanup for iso or img image */ + if (ctx->ramdisk_blk_dev) { + ret = efi_add_memory_map(ctx->image_addr, ctx->image_size, + EFI_CONVENTIONAL_MEMORY); + if (ret != EFI_SUCCESS) + log_err("Reclaiming memory failed\n"); + + if (blkmap_destroy(ctx->ramdisk_blk_dev->parent)) { + log_err("Destroying blkmap failed\n"); + ret = EFI_DEVICE_ERROR; + } + } + + /* cleanup for PE-COFF image */ + if (ctx->mem_handle) { + ret = efi_uninstall_multiple_protocol_interfaces( + ctx->mem_handle, &efi_guid_device_path, ctx->loaded_dp, + NULL); + if (ret != EFI_SUCCESS) + log_err("Uninstall device_path protocol failed\n"); + } + + efi_free_pool(ctx->loaded_dp); + free(ctx); + + return ret; +} + +/** + * efi_bootmgr_image_return_notify() - return to efibootmgr callback + * + * @event: the event for which this notification function is registered + * @context: event context + */ +static void EFIAPI efi_bootmgr_image_return_notify(struct efi_event *event, + void *context) +{ + efi_status_t ret; + + EFI_ENTRY("%p, %p", event, context); + ret = efi_bootmgr_release_uridp_resource(context); + EFI_EXIT(ret); +} + +/** + * try_load_from_uri_path() - Handle the URI device path + * + * @uridp: uri device path + * @lo_label: label of load option + * @handle: pointer to handle for newly installed image + * Return: status code + */ +static efi_status_t try_load_from_uri_path(struct efi_device_path_uri *uridp, + u16 *lo_label, + efi_handle_t *handle) +{ + char *s; + int err; + int uri_len; + efi_status_t ret; + void *source_buffer; + efi_uintn_t source_size; + struct uridp_context *ctx; + struct udevice *blk = NULL; + struct efi_event *event = NULL; + efi_handle_t mem_handle = NULL; + struct efi_device_path *loaded_dp; + static ulong image_size, image_addr; + + ctx = calloc(1, sizeof(struct uridp_context)); + if (!ctx) + return EFI_OUT_OF_RESOURCES; + + s = env_get("loadaddr"); + if (!s) { + log_err("Error: loadaddr is not set\n"); + ret = EFI_INVALID_PARAMETER; + goto err; + } + + image_addr = hextoul(s, NULL); + err = wget_with_dns(image_addr, uridp->uri); + if (err < 0) { + ret = EFI_INVALID_PARAMETER; + goto err; + } + + image_size = env_get_hex("filesize", 0); + if (!image_size) { + ret = EFI_INVALID_PARAMETER; + goto err; + } + + /* + * If the file extension is ".iso" or ".img", mount it and try to load + * the default file. + * If the file is PE-COFF image, load the downloaded file. + */ + uri_len = strlen(uridp->uri); + if (!strncmp(&uridp->uri[uri_len - 4], ".iso", 4) || + !strncmp(&uridp->uri[uri_len - 4], ".img", 4)) { + ret = prepare_loaded_image(lo_label, image_addr, image_size, + &loaded_dp, &blk); + if (ret != EFI_SUCCESS) + goto err; + + source_buffer = NULL; + source_size = 0; + } else if (efi_check_pe((void *)image_addr, image_size, NULL) == EFI_SUCCESS) { + /* + * loaded_dp must exist until efi application returns, + * will be freed in return_to_efibootmgr event callback. + */ + loaded_dp = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, + (uintptr_t)image_addr, image_size); + ret = efi_install_multiple_protocol_interfaces( + &mem_handle, &efi_guid_device_path, loaded_dp, NULL); + if (ret != EFI_SUCCESS) + goto err; + + source_buffer = (void *)image_addr; + source_size = image_size; + } else { + log_err("Error: file type is not supported\n"); + ret = EFI_UNSUPPORTED; + goto err; + } + + ctx->image_size = image_size; + ctx->image_addr = image_addr; + ctx->loaded_dp = loaded_dp; + ctx->ramdisk_blk_dev = blk; + ctx->mem_handle = mem_handle; + + ret = EFI_CALL(efi_load_image(false, efi_root, loaded_dp, source_buffer, + source_size, handle)); + if (ret != EFI_SUCCESS) + goto err; + + /* create event for cleanup when the image returns or error occurs */ + ret = efi_create_event(EVT_NOTIFY_SIGNAL, TPL_CALLBACK, + efi_bootmgr_image_return_notify, ctx, + &efi_guid_event_group_return_to_efibootmgr, + &event); + if (ret != EFI_SUCCESS) { + log_err("Creating event failed\n"); + goto err; + } + + return ret; + +err: + efi_bootmgr_release_uridp_resource(ctx); + + return ret; +} + +/** * try_load_entry() - try to load image for boot option * * Attempt to load load-option number 'n', returning device_path and file_path @@ -211,6 +603,13 @@ static efi_status_t try_load_entry(u16 n, efi_handle_t *handle, if (EFI_DP_TYPE(lo.file_path, MEDIA_DEVICE, FILE_PATH)) { /* file_path doesn't contain a device path */ ret = try_load_from_short_path(lo.file_path, handle); + } else if (EFI_DP_TYPE(lo.file_path, MESSAGING_DEVICE, MSG_URI)) { + if (IS_ENABLED(CONFIG_EFI_HTTP_BOOT)) + ret = try_load_from_uri_path( + (struct efi_device_path_uri *)lo.file_path, + lo.label, handle); + else + ret = EFI_LOAD_ERROR; } else { file_path = expand_media_path(lo.file_path); ret = EFI_CALL(efi_load_image(true, efi_root, file_path, @@ -729,3 +1128,515 @@ out: return EFI_SUCCESS; return ret; } + +static struct efi_device_path *bootefi_image_path; +static struct efi_device_path *bootefi_device_path; +static void *image_addr; +static size_t image_size; + +/** + * efi_get_image_parameters() - return image parameters + * + * @img_addr: address of loaded image in memory + * @img_size: size of loaded image + */ +void efi_get_image_parameters(void **img_addr, size_t *img_size) +{ + *img_addr = image_addr; + *img_size = image_size; +} + +/** + * efi_clear_bootdev() - clear boot device + */ +void efi_clear_bootdev(void) +{ + efi_free_pool(bootefi_device_path); + efi_free_pool(bootefi_image_path); + bootefi_device_path = NULL; + bootefi_image_path = NULL; + image_addr = NULL; + image_size = 0; +} + +/** + * efi_set_bootdev() - set boot device + * + * This function is called when a file is loaded, e.g. via the 'load' command. + * We use the path to this file to inform the UEFI binary about the boot device. + * + * @dev: device, e.g. "MMC" + * @devnr: number of the device, e.g. "1:2" + * @path: path to file loaded + * @buffer: buffer with file loaded + * @buffer_size: size of file loaded + */ +void efi_set_bootdev(const char *dev, const char *devnr, const char *path, + void *buffer, size_t buffer_size) +{ + struct efi_device_path *device, *image; + efi_status_t ret; + + log_debug("dev=%s, devnr=%s, path=%s, buffer=%p, size=%zx\n", dev, + devnr, path, buffer, buffer_size); + + /* Forget overwritten image */ + if (buffer + buffer_size >= image_addr && + image_addr + image_size >= buffer) + efi_clear_bootdev(); + + /* Remember only PE-COFF and FIT images */ + if (efi_check_pe(buffer, buffer_size, NULL) != EFI_SUCCESS) { + if (IS_ENABLED(CONFIG_FIT) && + !fit_check_format(buffer, IMAGE_SIZE_INVAL)) { + /* + * FIT images of type EFI_OS are started via command + * bootm. We should not use their boot device with the + * bootefi command. + */ + buffer = 0; + buffer_size = 0; + } else { + log_debug("- not remembering image\n"); + return; + } + } + + /* efi_set_bootdev() is typically called repeatedly, recover memory */ + efi_clear_bootdev(); + + image_addr = buffer; + image_size = buffer_size; + + ret = efi_dp_from_name(dev, devnr, path, &device, &image); + if (ret == EFI_SUCCESS) { + bootefi_device_path = device; + if (image) { + /* FIXME: image should not contain device */ + struct efi_device_path *image_tmp = image; + + efi_dp_split_file_path(image, &device, &image); + efi_free_pool(image_tmp); + } + bootefi_image_path = image; + log_debug("- boot device %pD\n", device); + if (image) + log_debug("- image %pD\n", image); + } else { + log_debug("- efi_dp_from_name() failed, err=%lx\n", ret); + efi_clear_bootdev(); + } +} + +/** + * efi_env_set_load_options() - set load options from environment variable + * + * @handle: the image handle + * @env_var: name of the environment variable + * @load_options: pointer to load options (output) + * Return: status code + */ +efi_status_t efi_env_set_load_options(efi_handle_t handle, + const char *env_var, + u16 **load_options) +{ + const char *env = env_get(env_var); + size_t size; + u16 *pos; + efi_status_t ret; + + *load_options = NULL; + if (!env) + return EFI_SUCCESS; + size = sizeof(u16) * (utf8_utf16_strlen(env) + 1); + pos = calloc(size, 1); + if (!pos) + return EFI_OUT_OF_RESOURCES; + *load_options = pos; + utf8_utf16_strcpy(&pos, env); + ret = efi_set_load_options(handle, size, *load_options); + if (ret != EFI_SUCCESS) { + free(*load_options); + *load_options = NULL; + } + return ret; +} + +/** + * copy_fdt() - Copy the device tree to a new location available to EFI + * + * The FDT is copied to a suitable location within the EFI memory map. + * Additional 12 KiB are added to the space in case the device tree needs to be + * expanded later with fdt_open_into(). + * + * @fdtp: On entry a pointer to the flattened device tree. + * On exit a pointer to the copy of the flattened device tree. + * FDT start + * Return: status code + */ +static efi_status_t copy_fdt(void **fdtp) +{ + unsigned long fdt_ram_start = -1L, fdt_pages; + efi_status_t ret = 0; + void *fdt, *new_fdt; + u64 new_fdt_addr; + uint fdt_size; + int i; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + u64 ram_start = gd->bd->bi_dram[i].start; + u64 ram_size = gd->bd->bi_dram[i].size; + + if (!ram_size) + continue; + + if (ram_start < fdt_ram_start) + fdt_ram_start = ram_start; + } + + /* + * Give us at least 12 KiB of breathing room in case the device tree + * needs to be expanded later. + */ + fdt = *fdtp; + fdt_pages = efi_size_in_pages(fdt_totalsize(fdt) + 0x3000); + fdt_size = fdt_pages << EFI_PAGE_SHIFT; + + ret = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES, + EFI_ACPI_RECLAIM_MEMORY, fdt_pages, + &new_fdt_addr); + if (ret != EFI_SUCCESS) { + log_err("ERROR: Failed to reserve space for FDT\n"); + goto done; + } + new_fdt = (void *)(uintptr_t)new_fdt_addr; + memcpy(new_fdt, fdt, fdt_totalsize(fdt)); + fdt_set_totalsize(new_fdt, fdt_size); + + *fdtp = (void *)(uintptr_t)new_fdt_addr; +done: + return ret; +} + +/** + * get_config_table() - get configuration table + * + * @guid: GUID of the configuration table + * Return: pointer to configuration table or NULL + */ +static void *get_config_table(const efi_guid_t *guid) +{ + size_t i; + + for (i = 0; i < systab.nr_tables; i++) { + if (!guidcmp(guid, &systab.tables[i].guid)) + return systab.tables[i].table; + } + return NULL; +} + +/** + * efi_install_fdt() - install device tree + * + * If fdt is not EFI_FDT_USE_INTERNAL, the device tree located at that memory + * address will be installed as configuration table, otherwise the device + * tree located at the address indicated by environment variable fdt_addr or as + * fallback fdtcontroladdr will be used. + * + * On architectures using ACPI tables device trees shall not be installed as + * configuration table. + * + * @fdt: address of device tree or EFI_FDT_USE_INTERNAL to use + * the hardware device tree as indicated by environment variable + * fdt_addr or as fallback the internal device tree as indicated by + * the environment variable fdtcontroladdr + * Return: status code + */ +efi_status_t efi_install_fdt(void *fdt) +{ + struct bootm_headers img = { 0 }; + efi_status_t ret; + + /* + * The EBBR spec requires that we have either an FDT or an ACPI table + * but not both. + */ + if (CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE) && fdt) + log_warning("WARNING: Can't have ACPI table and device tree - ignoring DT.\n"); + + if (fdt == EFI_FDT_USE_INTERNAL) { + const char *fdt_opt; + uintptr_t fdt_addr; + + /* Look for device tree that is already installed */ + if (get_config_table(&efi_guid_fdt)) + return EFI_SUCCESS; + /* Check if there is a hardware device tree */ + fdt_opt = env_get("fdt_addr"); + /* Use our own device tree as fallback */ + if (!fdt_opt) { + fdt_opt = env_get("fdtcontroladdr"); + if (!fdt_opt) { + log_err("ERROR: need device tree\n"); + return EFI_NOT_FOUND; + } + } + fdt_addr = hextoul(fdt_opt, NULL); + if (!fdt_addr) { + log_err("ERROR: invalid $fdt_addr or $fdtcontroladdr\n"); + return EFI_LOAD_ERROR; + } + fdt = map_sysmem(fdt_addr, 0); + } + + /* Install device tree */ + if (fdt_check_header(fdt)) { + log_err("ERROR: invalid device tree\n"); + return EFI_LOAD_ERROR; + } + + /* Create memory reservations as indicated by the device tree */ + efi_carve_out_dt_rsv(fdt); + + if (CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)) + return EFI_SUCCESS; + + /* Prepare device tree for payload */ + ret = copy_fdt(&fdt); + if (ret) { + log_err("ERROR: out of memory\n"); + return EFI_OUT_OF_RESOURCES; + } + + if (image_setup_libfdt(&img, fdt, NULL)) { + log_err("ERROR: failed to process device tree\n"); + return EFI_LOAD_ERROR; + } + + efi_try_purge_kaslr_seed(fdt); + + if (CONFIG_IS_ENABLED(EFI_TCG2_PROTOCOL_MEASURE_DTB)) { + ret = efi_tcg2_measure_dtb(fdt); + if (ret == EFI_SECURITY_VIOLATION) { + log_err("ERROR: failed to measure DTB\n"); + return ret; + } + } + + /* Install device tree as UEFI table */ + ret = efi_install_configuration_table(&efi_guid_fdt, fdt); + if (ret != EFI_SUCCESS) { + log_err("ERROR: failed to install device tree\n"); + return ret; + } + + return EFI_SUCCESS; +} + +/** + * do_bootefi_exec() - execute EFI binary + * + * The image indicated by @handle is started. When it returns the allocated + * memory for the @load_options is freed. + * + * @handle: handle of loaded image + * @load_options: load options + * Return: status code + * + * Load the EFI binary into a newly assigned memory unwinding the relocation + * information, install the loaded image protocol, and call the binary. + */ +static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options) +{ + efi_status_t ret; + efi_uintn_t exit_data_size = 0; + u16 *exit_data = NULL; + struct efi_event *evt; + + /* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */ + switch_to_non_secure_mode(); + + /* + * The UEFI standard requires that the watchdog timer is set to five + * minutes when invoking an EFI boot option. + * + * Unified Extensible Firmware Interface (UEFI), version 2.7 Errata A + * 7.5. Miscellaneous Boot Services - EFI_BOOT_SERVICES.SetWatchdogTimer + */ + ret = efi_set_watchdog(300); + if (ret != EFI_SUCCESS) { + log_err("ERROR: Failed to set watchdog timer\n"); + goto out; + } + + /* Call our payload! */ + ret = EFI_CALL(efi_start_image(handle, &exit_data_size, &exit_data)); + if (ret != EFI_SUCCESS) { + log_err("## Application failed, r = %lu\n", + ret & ~EFI_ERROR_MASK); + if (exit_data) { + log_err("## %ls\n", exit_data); + efi_free_pool(exit_data); + } + } + + efi_restore_gd(); + +out: + free(load_options); + + if (IS_ENABLED(CONFIG_EFI_LOAD_FILE2_INITRD)) { + if (efi_initrd_deregister() != EFI_SUCCESS) + log_err("Failed to remove loadfile2 for initrd\n"); + } + + /* Notify EFI_EVENT_GROUP_RETURN_TO_EFIBOOTMGR event group. */ + list_for_each_entry(evt, &efi_events, link) { + if (evt->group && + !guidcmp(evt->group, + &efi_guid_event_group_return_to_efibootmgr)) { + efi_signal_event(evt); + EFI_CALL(systab.boottime->close_event(evt)); + break; + } + } + + /* Control is returned to U-Boot, disable EFI watchdog */ + efi_set_watchdog(0); + + return ret; +} + +/** + * efi_bootmgr_run() - execute EFI boot manager + * @fdt: Flat device tree + * + * Invoke EFI boot manager and execute a binary depending on + * boot options. If @fdt is not NULL, it will be passed to + * the executed binary. + * + * Return: status code + */ +efi_status_t efi_bootmgr_run(void *fdt) +{ + efi_handle_t handle; + void *load_options; + efi_status_t ret; + + /* Initialize EFI drivers */ + ret = efi_init_obj_list(); + if (ret != EFI_SUCCESS) { + log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n", + ret & ~EFI_ERROR_MASK); + return CMD_RET_FAILURE; + } + + ret = efi_install_fdt(fdt); + if (ret != EFI_SUCCESS) + return ret; + + ret = efi_bootmgr_load(&handle, &load_options); + if (ret != EFI_SUCCESS) { + log_notice("EFI boot manager: Cannot load any image\n"); + return ret; + } + + return do_bootefi_exec(handle, load_options); +} + +/** + * efi_run_image() - run loaded UEFI image + * + * @source_buffer: memory address of the UEFI image + * @source_size: size of the UEFI image + * Return: status code + */ +efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size) +{ + efi_handle_t mem_handle = NULL, handle; + struct efi_device_path *file_path = NULL; + struct efi_device_path *msg_path; + efi_status_t ret, ret2; + u16 *load_options; + + if (!bootefi_device_path || !bootefi_image_path) { + log_debug("Not loaded from disk\n"); + /* + * Special case for efi payload not loaded from disk, + * such as 'bootefi hello' or for example payload + * loaded directly into memory via JTAG, etc: + */ + file_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, + (uintptr_t)source_buffer, + source_size); + /* + * Make sure that device for device_path exist + * in load_image(). Otherwise, shell and grub will fail. + */ + ret = efi_install_multiple_protocol_interfaces(&mem_handle, + &efi_guid_device_path, + file_path, NULL); + if (ret != EFI_SUCCESS) + goto out; + msg_path = file_path; + } else { + file_path = efi_dp_append(bootefi_device_path, + bootefi_image_path); + msg_path = bootefi_image_path; + log_debug("Loaded from disk\n"); + } + + log_info("Booting %pD\n", msg_path); + + ret = EFI_CALL(efi_load_image(false, efi_root, file_path, source_buffer, + source_size, &handle)); + if (ret != EFI_SUCCESS) { + log_err("Loading image failed\n"); + goto out; + } + + /* Transfer environment variable as load options */ + ret = efi_env_set_load_options(handle, "bootargs", &load_options); + if (ret != EFI_SUCCESS) + goto out; + + ret = do_bootefi_exec(handle, load_options); + +out: + ret2 = efi_uninstall_multiple_protocol_interfaces(mem_handle, + &efi_guid_device_path, + file_path, NULL); + efi_free_pool(file_path); + return (ret != EFI_SUCCESS) ? ret : ret2; +} + +/** + * efi_binary_run() - run loaded UEFI image + * + * @image: memory address of the UEFI image + * @size: size of the UEFI image + * @fdt: device-tree + * + * Execute an EFI binary image loaded at @image. + * @size may be zero if the binary is loaded with U-Boot load command. + * + * Return: status code + */ +efi_status_t efi_binary_run(void *image, size_t size, void *fdt) +{ + efi_status_t ret; + + /* Initialize EFI drivers */ + ret = efi_init_obj_list(); + if (ret != EFI_SUCCESS) { + log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n", + ret & ~EFI_ERROR_MASK); + return -1; + } + + ret = efi_install_fdt(fdt); + if (ret != EFI_SUCCESS) + return ret; + + return efi_run_image(image, size); +} diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index fad0476a88..644bebee6b 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -90,6 +90,9 @@ const efi_guid_t efi_guid_event_group_ready_to_boot = /* event group ResetSystem() invoked (before ExitBootServices) */ const efi_guid_t efi_guid_event_group_reset_system = EFI_EVENT_GROUP_RESET_SYSTEM; +/* event group return to efibootmgr */ +const efi_guid_t efi_guid_event_group_return_to_efibootmgr = + EFI_EVENT_GROUP_RETURN_TO_EFIBOOTMGR; /* GUIDs of the Load File and Load File2 protocols */ const efi_guid_t efi_guid_load_file_protocol = EFI_LOAD_FILE_PROTOCOL_GUID; const efi_guid_t efi_guid_load_file2_protocol = EFI_LOAD_FILE2_PROTOCOL_GUID; @@ -712,7 +715,7 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, void (EFIAPI *notify_function) ( struct efi_event *event, void *context), - void *notify_context, efi_guid_t *group, + void *notify_context, const efi_guid_t *group, struct efi_event **event) { struct efi_event *evt; @@ -790,7 +793,7 @@ efi_status_t EFIAPI efi_create_event_ex(uint32_t type, efi_uintn_t notify_tpl, struct efi_event *event, void *context), void *notify_context, - efi_guid_t *event_group, + const efi_guid_t *event_group, struct efi_event **event) { efi_status_t ret; diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index f0d76113b0..b808a7fe62 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -690,6 +690,13 @@ int efi_disk_probe(void *ctx, struct event *event) return -1; } + /* only do the boot option management when UEFI sub-system is initialized */ + if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR) && efi_obj_list_initialized == EFI_SUCCESS) { + ret = efi_bootmgr_update_media_device_boot_option(); + if (ret != EFI_SUCCESS) + return -1; + } + return 0; } @@ -742,6 +749,17 @@ int efi_disk_remove(void *ctx, struct event *event) dev_tag_del(dev, DM_TAG_EFI); return 0; + + /* + * TODO A flag to distinguish below 2 different scenarios of this + * function call is needed: + * a) Unplugging of a removable media under U-Boot + * b) U-Boot exiting and booting an OS + * In case of scenario a), efi_bootmgr_update_media_device_boot_option() + * needs to be invoked here to update the boot options and remove the + * unnecessary ones. + */ + } /** diff --git a/lib/efi_loader/efi_dt_fixup.c b/lib/efi_loader/efi_dt_fixup.c index 838023c78f..a0c889cf98 100644 --- a/lib/efi_loader/efi_dt_fixup.c +++ b/lib/efi_loader/efi_dt_fixup.c @@ -173,7 +173,7 @@ efi_dt_fixup(struct efi_dt_fixup_protocol *this, void *dtb, } fdt_set_totalsize(dtb, *buffer_size); - if (image_setup_libfdt(&img, dtb, 0, NULL)) { + if (image_setup_libfdt(&img, dtb, NULL)) { log_err("failed to process device tree\n"); ret = EFI_INVALID_PARAMETER; goto out; diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c index e6de685e87..37359a77bb 100644 --- a/lib/efi_loader/efi_setup.c +++ b/lib/efi_loader/efi_setup.c @@ -245,6 +245,13 @@ efi_status_t efi_init_obj_list(void) if (ret != EFI_SUCCESS) goto out; + if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) { + /* update boot option after variable service initialized */ + ret = efi_bootmgr_update_media_device_boot_option(); + if (ret != EFI_SUCCESS) + goto out; + } + /* Define supported languages */ ret = efi_init_platform_lang(); if (ret != EFI_SUCCESS) diff --git a/lib/slre.c b/lib/slre.c index e82a9e7635..e1a50443e0 100644 --- a/lib/slre.c +++ b/lib/slre.c @@ -686,6 +686,7 @@ int main(int argc, char *argv[]) } if (!slre_compile(&slre, argv[1])) { + (void) fclose(fp); fprintf(stderr, "Error compiling slre: %s\n", slre.err_str); return 1; } |