Merge tag 'efi-next-03072025' of https://source.denx.de/u-boot/custodians/u-boot-tpm into next

Sughosh added EFI HTTP(s) support into our eficonfig application. Up to
now we could only enable that via our efidebug command. Users now get that
option on the eficonfig menu.

Javier implemented support for the EFI_PARTITION_INFO_PROTOCOL,
to provide cached partition information for GPT partition types.
The protocol describes legacy MBR partition types, but that's for backward
compatibility and not implemented by this series.
The protocol is needed by [0], an implementation of a UEFI based A/B boot
protocol for the root filesystem.

Paul added support for EFI_DEBUG_IMAGE_INFO_TABLE. This is part of the EFI
spec and is defining a debug protocol that Google currently uses to debug
their Generic Bootloader project [1][2], using EFI to load Android.
Heinrich contributed a test EFI application for it as well.
The efi_realloc() function he added will realloc any type of memory to
BootServicesData, but keeping in mind the new protocol is the only consumer
he will fix that on a followup patch.

Finally another round of smatch fixes from Andrew cleans up coding errors.

The CI https://source.denx.de/u-boot/custodians/u-boot-tpm/-/pipelines/26935
seems happy

[0] https://gitlab.com/CentOS/automotive/src/ukiboot
[1] https://lpc.events/event/18/contributions/1704/attachments/1550/3231/Android%20Generic%20Boot%20Loader.pdf
[2] https://source.android.com/docs/core/architecture/bootloader/generic-bootloader

1 files changed, 37 insertions, 2 deletions

diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 47b583cc5e1..130c4db9606 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -26,6 +26,7 @@ struct efi_system_partition efi_system_partition = {
 
 const efi_guid_t efi_block_io_guid = EFI_BLOCK_IO_PROTOCOL_GUID;
 const efi_guid_t efi_system_partition_guid = PARTITION_SYSTEM_GUID;
+const efi_guid_t efi_partition_info_guid = EFI_PARTITION_INFO_PROTOCOL_GUID;
 
 /**
  * struct efi_disk_obj - EFI disk object
@@ -35,6 +36,7 @@ const efi_guid_t efi_system_partition_guid = PARTITION_SYSTEM_GUID;
  * @media:	block I/O media information
  * @dp:		device path to the block device
  * @volume:	simple file system protocol of the partition
+ * @info:	EFI partition info protocol interface
  */
 struct efi_disk_obj {
 	struct efi_object header;
@@ -42,6 +44,7 @@ struct efi_disk_obj {
 	struct efi_block_io_media media;
 	struct efi_device_path *dp;
 	struct efi_simple_file_system_protocol *volume;
+	struct efi_partition_info info;
 };
 
 /**
@@ -426,6 +429,7 @@ static efi_status_t efi_disk_add_dev(
 	/* Fill in object data */
 	if (part_info) {
 		struct efi_device_path *node = efi_dp_part_node(desc, part);
+		struct efi_partition_info *info = &diskobj->info;
 		struct efi_handler *handler;
 		void *protocol_interface;
 
@@ -454,18 +458,48 @@ static efi_status_t efi_disk_add_dev(
 			goto error;
 		}
 
+		info->revision = EFI_PARTITION_INFO_PROTOCOL_REVISION;
+
+		switch (desc->part_type) {
+#if CONFIG_IS_ENABLED(EFI_PARTITION)
+		case PART_TYPE_EFI:
+			info->type = PARTITION_TYPE_GPT;
+			ret = part_get_gpt_pte(desc, part, &info->info.gpt);
+			if (ret) {
+				log_debug("get PTE for part %d failed %ld\n",
+					  part, ret);
+				goto error;
+			}
+			break;
+#endif
+#if CONFIG_IS_ENABLED(DOS_PARTITION)
+		case PART_TYPE_DOS:
+			info->type = PARTITION_TYPE_MBR;
+
+			/* TODO: implement support for MBR partition types */
+			log_debug("EFI_PARTITION_INFO_PROTOCOL doesn't support MBR\n");
+			break;
+#endif
+		default:
+			info->type = PARTITION_TYPE_OTHER;
+			break;
+		}
+
 		diskobj->dp = efi_dp_append_node(dp_parent, node);
 		efi_free_pool(node);
 		diskobj->media.last_block = part_info->size - 1;
-		if (part_info->bootable & PART_EFI_SYSTEM_PARTITION)
+		if (part_info->bootable & PART_EFI_SYSTEM_PARTITION) {
 			esp_guid = &efi_system_partition_guid;
+			info->system = 1;
+		}
+
 	} else {
 		diskobj->dp = efi_dp_from_part(desc, part);
 		diskobj->media.last_block = desc->lba - 1;
 	}
 
 	/*
-	 * Install the device path and the block IO protocol.
+	 * Install the device path, the block IO and partition info protocols.
 	 *
 	 * InstallMultipleProtocolInterfaces() checks if the device path is
 	 * already installed on an other handle and returns EFI_ALREADY_STARTED
@@ -476,6 +510,7 @@ static efi_status_t efi_disk_add_dev(
 					&handle,
 					&efi_guid_device_path, diskobj->dp,
 					&efi_block_io_guid, &diskobj->ops,
+					&efi_partition_info_guid, &diskobj->info,
 					/*
 					 * esp_guid must be last entry as it
 					 * can be NULL. Its interface is NULL.