Merge tag 'efi-2021-04-rc2' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2021-04-rc2

Bug fixes:

* do not allow creating of files with filenames on FAT file system
* install UEFI System Partition GUID on ESP handle
* in dtbdump.efi test tool use GUID to find ESP handle

Documentation:

* man-page for load command
* describe end of life of plat_auto

4 files changed, 87 insertions, 53 deletions

diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index 5ae4833fa78..1aaa9f94fa4 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -244,6 +244,21 @@ static char *dp_media(char *s, struct efi_device_path *dp)
 			     cddp->partition_start, cddp->partition_size);
 		break;
 	}
+	case DEVICE_PATH_SUB_TYPE_VENDOR_PATH: {
+		int i, n;
+		struct efi_device_path_vendor *vdp =
+			(struct efi_device_path_vendor *)dp;
+
+		s += sprintf(s, "VenMedia(%pUl", &vdp->guid);
+		n = (int)vdp->dp.length - sizeof(struct efi_device_path_vendor);
+		if (n > 0) {
+			s += sprintf(s, ",");
+			for (i = 0; i < n; ++i)
+				s += sprintf(s, "%02x", vdp->vendor_data[i]);
+		}
+		s += sprintf(s, ")");
+		break;
+	}
 	case DEVICE_PATH_SUB_TYPE_FILE_PATH: {
 		struct efi_device_path_file_path *fp =
 			(struct efi_device_path_file_path *)dp;
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index d0aad0252a5..1f6b817dead 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -19,6 +19,7 @@
 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;
 
 /**
  * struct efi_disk_obj - EFI disk object
@@ -362,6 +363,7 @@ static efi_status_t efi_disk_add_dev(
 {
 	struct efi_disk_obj *diskobj;
 	struct efi_object *handle;
+	const efi_guid_t *guid = NULL;
 	efi_status_t ret;
 
 	/* Don't add empty devices */
@@ -400,6 +402,8 @@ static efi_status_t efi_disk_add_dev(
 		efi_free_pool(node);
 		diskobj->offset = part_info->start;
 		diskobj->media.last_block = part_info->size - 1;
+		if (part_info->bootable & PART_EFI_SYSTEM_PARTITION)
+			guid = &efi_system_partition_guid;
 	} else {
 		diskobj->dp = efi_dp_from_part(desc, part);
 		diskobj->offset = 0;
@@ -417,7 +421,8 @@ static efi_status_t efi_disk_add_dev(
 	handle = &diskobj->header;
 	ret = EFI_CALL(efi_install_multiple_protocol_interfaces(
 			&handle, &efi_guid_device_path, diskobj->dp,
-			&efi_block_io_guid, &diskobj->ops, NULL));
+			&efi_block_io_guid, &diskobj->ops,
+			guid, NULL, NULL));
 	if (ret != EFI_SUCCESS)
 		return ret;
 
@@ -467,13 +472,7 @@ static efi_status_t efi_disk_add_dev(
 
 	/* Store first EFI system partition */
 	if (part && !efi_system_partition.if_type) {
-		int r;
-		struct disk_partition info;
-
-		r = part_get_info(desc, part, &info);
-		if (r)
-			return EFI_DEVICE_ERROR;
-		if (info.bootable & PART_EFI_SYSTEM_PARTITION) {
+		if (part_info->bootable & PART_EFI_SYSTEM_PARTITION) {
 			efi_system_partition.if_type = desc->if_type;
 			efi_system_partition.devnum = desc->devnum;
 			efi_system_partition.part = part;
diff --git a/lib/efi_loader/efi_dt_fixup.c b/lib/efi_loader/efi_dt_fixup.c
index 3850ab3b0fe..6de57b84d20 100644
--- a/lib/efi_loader/efi_dt_fixup.c
+++ b/lib/efi_loader/efi_dt_fixup.c
@@ -110,6 +110,7 @@ efi_dt_fixup(struct efi_dt_fixup_protocol *this, void *dtb,
 {
 	efi_status_t ret;
 	size_t required_size;
+	size_t total_size;
 	bootm_headers_t img = { 0 };
 
 	EFI_ENTRY("%p, %p, %p, %d", this, dtb, buffer_size, flags);
@@ -124,20 +125,20 @@ efi_dt_fixup(struct efi_dt_fixup_protocol *this, void *dtb,
 		goto out;
 	}
 	if (flags & EFI_DT_APPLY_FIXUPS) {
+		/* Check size */
 		required_size = fdt_off_dt_strings(dtb) +
 				fdt_size_dt_strings(dtb) +
 				0x3000;
-	} else {
-		required_size = fdt_totalsize(dtb);
-	}
-	if (required_size > *buffer_size) {
-		*buffer_size = required_size;
-		ret = EFI_BUFFER_TOO_SMALL;
-		goto out;
-	}
-	fdt_set_totalsize(dtb, *buffer_size);
+		total_size = fdt_totalsize(dtb);
+		if (required_size < total_size)
+			required_size = total_size;
+		if (required_size > *buffer_size) {
+			*buffer_size = required_size;
+			ret = EFI_BUFFER_TOO_SMALL;
+			goto out;
+		}
 
-	if (flags & EFI_DT_APPLY_FIXUPS) {
+		fdt_set_totalsize(dtb, *buffer_size);
 		if (image_setup_libfdt(&img, dtb, 0, NULL)) {
 			log_err("failed to process device tree\n");
 			ret = EFI_INVALID_PARAMETER;
@@ -147,10 +148,10 @@ efi_dt_fixup(struct efi_dt_fixup_protocol *this, void *dtb,
 	if (flags & EFI_DT_RESERVE_MEMORY)
 		efi_carve_out_dt_rsv(dtb);
 
-	if (EFI_DT_INSTALL_TABLE) {
+	if (flags & EFI_DT_INSTALL_TABLE) {
 		ret = efi_install_configuration_table(&efi_guid_fdt, dtb);
 		if (ret != EFI_SUCCESS) {
-			log_err("ERROR: failed to install device tree\n");
+			log_err("failed to install device tree\n");
 			goto out;
 		}
 	}
diff --git a/lib/efi_selftest/dtbdump.c b/lib/efi_selftest/dtbdump.c
index 953b264d9d4..38ab9f8bf0e 100644
--- a/lib/efi_selftest/dtbdump.c
+++ b/lib/efi_selftest/dtbdump.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <efi_api.h>
 #include <efi_dt_fixup.h>
+#include <part.h>
 
 #define BUFFER_SIZE 64
 #define ESC 0x17
@@ -27,6 +28,7 @@ static efi_handle_t handle;
 static struct efi_system_table *systable;
 static const efi_guid_t efi_dt_fixup_protocol_guid = EFI_DT_FIXUP_PROTOCOL_GUID;
 static const efi_guid_t efi_file_info_guid = EFI_FILE_INFO_GUID;
+static const efi_guid_t efi_system_partition_guid = PARTITION_SYSTEM_GUID;
 
 /**
  * print() - print string
@@ -231,6 +233,52 @@ void do_help(void)
 }
 
 /**
+ * open_file_system() - open simple file system protocol
+ *
+ * file_system:	interface of the simple file system protocol
+ * Return:	status code
+ */
+static efi_status_t
+open_file_system(struct efi_simple_file_system_protocol **file_system)
+{
+	struct efi_loaded_image *loaded_image;
+	efi_status_t ret;
+	efi_handle_t *handle_buffer = NULL;
+	efi_uintn_t count;
+
+	ret = bs->open_protocol(handle, &loaded_image_guid,
+				(void **)&loaded_image, NULL, NULL,
+				EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+	if (ret != EFI_SUCCESS) {
+		error(L"Loaded image protocol not found\r\n");
+		return ret;
+	}
+
+	/* Open the simple file system protocol on the same partition */
+	ret = bs->open_protocol(loaded_image->device_handle,
+				&guid_simple_file_system_protocol,
+				(void **)file_system, NULL, NULL,
+				EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+	if (ret == EFI_SUCCESS)
+		return ret;
+
+	/* Open the simple file system protocol on the UEFI system partition */
+	ret = bs->locate_handle_buffer(BY_PROTOCOL, &efi_system_partition_guid,
+				       NULL, &count, &handle_buffer);
+	if (ret == EFI_SUCCESS && handle_buffer)
+		ret = bs->open_protocol(handle_buffer[0],
+					&guid_simple_file_system_protocol,
+					(void **)file_system, NULL, NULL,
+					EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+	if (ret != EFI_SUCCESS)
+		error(L"Failed to open simple file system protocol\r\n");
+	if (handle)
+		bs->free_pool(handle_buffer);
+
+	return ret;
+}
+
+/**
  * do_load() - load and install device-tree
  *
  * @filename:	file name
@@ -239,7 +287,6 @@ void do_help(void)
 efi_status_t do_load(u16 *filename)
 {
 	struct efi_dt_fixup_protocol *dt_fixup_prot;
-	struct efi_loaded_image *loaded_image;
 	struct efi_simple_file_system_protocol *file_system;
 	struct efi_file_handle *root = NULL, *file = NULL;
 	u64 addr = 0;
@@ -258,22 +305,9 @@ efi_status_t do_load(u16 *filename)
 
 	filename = skip_whitespace(filename);
 
-	ret = bs->open_protocol(handle, &loaded_image_guid,
-				(void **)&loaded_image, NULL, NULL,
-				EFI_OPEN_PROTOCOL_GET_PROTOCOL);
-	if (ret != EFI_SUCCESS) {
-		error(L"Loaded image protocol not found\r\n");
-		return ret;
-	}
-	/* Open the simple file system protocol */
-	ret = bs->open_protocol(loaded_image->device_handle,
-				&guid_simple_file_system_protocol,
-				(void **)&file_system, NULL, NULL,
-				EFI_OPEN_PROTOCOL_GET_PROTOCOL);
-	if (ret != EFI_SUCCESS) {
-		error(L"Failed to open simple file system protocol\r\n");
+	ret = open_file_system(&file_system);
+	if (ret != EFI_SUCCESS)
 		goto out;
-	}
 
 	/* Open volume */
 	ret = file_system->open_volume(file_system, &root);
@@ -389,7 +423,6 @@ out:
  */
 efi_status_t do_save(u16 *filename)
 {
-	struct efi_loaded_image *loaded_image;
 	struct efi_simple_file_system_protocol *file_system;
 	efi_uintn_t dtb_size;
 	struct efi_file_handle *root, *file;
@@ -409,23 +442,9 @@ efi_status_t do_save(u16 *filename)
 
 	filename = skip_whitespace(filename);
 
-	ret = bs->open_protocol(handle, &loaded_image_guid,
-				(void **)&loaded_image, NULL, NULL,
-				EFI_OPEN_PROTOCOL_GET_PROTOCOL);
-	if (ret != EFI_SUCCESS) {
-		error(L"Loaded image protocol not found\r\n");
-		return ret;
-	}
-
-	/* Open the simple file system protocol */
-	ret = bs->open_protocol(loaded_image->device_handle,
-				&guid_simple_file_system_protocol,
-				(void **)&file_system, NULL, NULL,
-				EFI_OPEN_PROTOCOL_GET_PROTOCOL);
-	if (ret != EFI_SUCCESS) {
-		error(L"Failed to open simple file system protocol\r\n");
+	ret = open_file_system(&file_system);
+	if (ret != EFI_SUCCESS)
 		return ret;
-	}
 
 	/* Open volume */
 	ret = file_system->open_volume(file_system, &root);