Pull request for efi-2023-01-rc2

Documentation:
 
 * fix building with Sphinx 5.0+
 * man-pages for cmp and bootd commands
 
 UEFI:
 
 * Avoid unaligned access in efi_file_from_path()
 * More bug fixes
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Merge tag 'efi-2023-01-rc2' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2023-01-rc2

Documentation:

* fix building with Sphinx 5.0+
* man-pages for cmp and bootd commands

UEFI:

* Avoid unaligned access in efi_file_from_path()
* More bug fixes

MAINTAINERS

@@ -889,6 +889,10 @@ M:	Ilias Apalodimas <ilias.apalodimas@linaro.org>
 S:	Maintained
 T:	git https://source.denx.de/u-boot/custodians/u-boot-efi.git
 F:	arch/arm/lib/*_efi.*
+F:	cmd/bootefi.c
+F:	cmd/eficonfig.c
+F:	cmd/efidebug.c
+F:	cmd/nvedit_efi.c
 F:	doc/api/efi.rst
 F:	doc/develop/uefi/*
 F:	doc/mkeficapsule.1

cmd/eficonfig.c

@@ -1527,8 +1527,6 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo
 	}
 
 	ret = eficonfig_set_boot_option(varname, final_dp, final_dp_size, bo->description, tmp);
-	if (ret != EFI_SUCCESS)
-		goto out;
 out:
 	free(tmp);
 	free(bo->optional_data);
@@ -2280,10 +2278,10 @@ efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_op
 {
 	u32 i, j;
 	efi_uintn_t size;
-	efi_status_t ret;
 	void *load_option;
 	struct efi_load_option lo;
 	u16 varname[] = u"Boot####";
+	efi_status_t ret = EFI_SUCCESS;
 
 	for (i = 0; i <= 0xFFFF; i++) {
 		efi_uintn_t tmp;

doc/conf.py

@@ -178,7 +178,7 @@ finally:
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:

doc/usage/cmd/bootd.rst

@@ -0,0 +1,38 @@
+.. SPDX-License-Identifier: GPL-2.0+:
+
+bootd command
+=============
+
+Synopsis
+--------
+
+::
+
+    bootd
+
+Description
+-----------
+
+The bootd command executes the command stored in the environment variable
+*bootcmd*, i.e. it does the same thing as *run bootcmd*.
+
+Example
+-------
+
+::
+
+    => setenv bootcmd 'echo Hello World'
+    => bootd
+    Hello World
+    => setenv bootcmd true
+    => bootd; echo $?
+    0
+    => setenv bootcmd false
+    => bootd; echo $?
+    1
+
+Return value
+------------
+
+The return value $? of the bootd command is the return value of the command in
+the environment variable *bootcmd*.

doc/usage/cmd/cmp.rst

@@ -0,0 +1,105 @@
+.. SPDX-License-Identifier: GPL-2.0+:
+
+cmp command
+===========
+
+Synopsis
+--------
+
+::
+
+    cmp [.b, .w, .l, .q] addr1 addr2 count
+
+Description
+-----------
+
+The cmp command is used to compare two memory areas. By default it works on
+four byte tuples. By appending .b, .w, .l, .q the size of the tuples is
+controlled:
+
+cmp.b
+    compare 1 byte tuples
+
+cmp.w
+    compare 2 byte tuples
+
+cmp.l
+    compare 4 byte tuples
+
+cmp.q
+    compare 8 byte tuples
+
+The parameters are used as follows:
+
+addr1
+    Address of the first memory area.
+
+addr2
+    Address of the second memory area.
+
+count
+    Number of bytes to compare (as hexadecimal number).
+
+Example
+-------
+
+In the example below the strings "Hello world\n" and "Hello World\n" are written
+to memory and then compared.
+
+::
+
+    => mm.b 0x1000000
+    01000000: 00 ? 48
+    01000001: 00 ? 65
+    01000002: 00 ? 6c
+    01000003: 00 ? 6c
+    01000004: 00 ? 6f
+    01000005: 00 ? 20
+    01000006: 00 ? 77
+    01000007: 00 ? 6f
+    01000008: 00 ? 72
+    01000009: 00 ? 6c
+    0100000a: 00 ? 64
+    0100000b: 00 ? 0d
+    0100000c: 00 ? => <INTERRUPT>
+    => mm.b 0x101000
+    00101000: 00 ? 48
+    00101001: 00 ? 65
+    00101002: 00 ? 6c
+    00101003: 00 ? 6c
+    00101004: 00 ? 6f
+    00101005: 00 ? 20
+    00101006: 00 ? 57
+    00101007: 00 ? 6f
+    00101008: 00 ? 72
+    00101009: 00 ? 6c
+    0010100a: 00 ? 64
+    0010100b: 00 ? 0d
+    0010100c: 00 ? => <INTERRUPT>
+    => cmp 0x1000000 0x101000 0xc
+    word at 0x01000004 (0x6f77206f) != word at 0x00101004 (0x6f57206f)
+    Total of 1 word(s) were the same
+    => cmp.b 0x1000000 0x101000 0xc
+    byte at 0x01000006 (0x77) != byte at 0x00101006 (0x57)
+    Total of 6 byte(s) were the same
+    => cmp.w 0x1000000 0x101000 0xc
+    halfword at 0x01000006 (0x6f77) != halfword at 0x00101006 (0x6f57)
+    Total of 3 halfword(s) were the same
+    => cmp.l 0x1000000 0x101000 0xc
+    word at 0x01000004 (0x6f77206f) != word at 0x00101004 (0x6f57206f)
+    Total of 1 word(s) were the same
+    => cmp.q 0x1000000 0x101000 0xc
+    double word at 0x01000000 (0x6f77206f6c6c6548) != double word at 0x00101000 (0x6f57206f6c6c6548)
+    Total of 0 double word(s) were the same
+
+Configuration
+-------------
+
+The cmp command is only available if CONFIG_CMD_MEMORY=y. The cmp.q command is
+only available if additionally CONFIG_MEM_SUPPORT_64BIT_DATA=y.
+
+Return value
+------------
+
+The return value $? is true (0) if the compared memory areas are equal.
+The reutrn value is false (1) if the compared memory areas differ.

doc/usage/index.rst

@@ -23,6 +23,7 @@ Shell commands
    cmd/addrmap
    cmd/askenv
    cmd/base
+   cmd/bootd
    cmd/bootdev
    cmd/bootefi
    cmd/bootflow
@@ -34,6 +35,7 @@ Shell commands
    cmd/cat
    cmd/cbsysinfo
    cmd/cls
+   cmd/cmp
    cmd/conitrace
    cmd/cyclic
    cmd/dm

include/asm-generic/global_data.h

@@ -651,7 +651,7 @@ enum gd_flags {
 	 */
 	GD_FLG_FDT_CHANGED = 0x100000,
 	/**
-	 * GD_FLG_CYCLIC_RUNNING: cyclic_run is in progress
+	 * @GD_FLG_CYCLIC_RUNNING: cyclic_run is in progress
 	 */
 	GD_FLG_CYCLIC_RUNNING = 0x200000,
 };

include/sandbox_host.h

@@ -23,26 +23,23 @@ struct host_sb_plat {
 
 /**
  * struct host_ops - operations supported by UCLASS_HOST
- *
- * @attach_file: Attach a new file to a device
- * @detach_file: Detach a file from a device
  */
 struct host_ops {
-	/*
+	/**
-	 * attach_file() - Attach a new file to the device
+	 * @attach_file: - Attach a new file to the device
 	 *
-	 * @dev: Device to update
+	 * @attach_file.dev: Device to update
-	 * @filename: Name of the file, e.g. "/path/to/disk.img"
+	 * @attach_file.filename: Name of the file, e.g. "/path/to/disk.img"
-	 * Returns: 0 if OK, -EEXIST if a file is already attached, other -ve on
+	 * @attach_file.Returns: 0 if OK, -EEXIST if a file is already attached, other -ve on
 	 * other error
 	 */
 	int (*attach_file)(struct udevice *dev, const char *filename);
 
 	/**
-	 * detach_file() - Detach a file from the device
+	 * @detach_file: - Detach a file from the device
 	 *
-	 * @dev: Device to detach from
+	 * @detach_file.dev: Device to detach from
-	 * Returns: 0 if OK, -ENOENT if no file is attached, other -ve on other
+	 * @detach_file.Returns: 0 if OK, -ENOENT if no file is attached, other -ve on other
 	 * error
 	 */
 	 int (*detach_file)(struct udevice *dev);

lib/efi_loader/efi_boottime.c

@@ -2754,7 +2754,7 @@ efi_uninstall_multiple_protocol_interfaces_int(efi_handle_t handle,
 {
 	const efi_guid_t *protocol;
 	void *protocol_interface;
-	efi_status_t ret;
+	efi_status_t ret = EFI_SUCCESS;
 	size_t i = 0;
 	efi_va_list argptr_copy;
 

lib/efi_loader/efi_file.c

@@ -1098,6 +1098,15 @@ static const struct efi_file_handle efi_file_handle_protocol = {
 /**
  * efi_file_from_path() - open file via device path
  *
+ * The device path @fp consists of the device path of the handle with the
+ * simple file system protocol and one or more file path device path nodes.
+ * The concatenation of all file path names provides the total file path.
+ *
+ * The code starts at the first file path node and tries to open that file or
+ * directory. If there is a succeding file path node, the code opens it relative
+ * to this directory and continues iterating until reaching the last file path
+ * node.
+ *
  * @fp:		device path
  * Return:	EFI_FILE_PROTOCOL for the file or NULL
  */
@@ -1128,16 +1137,27 @@ struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp)
 			container_of(fp, struct efi_device_path_file_path, dp);
 		struct efi_file_handle *f2;
 		u16 *filename;
+		size_t filename_sz;
 
 		if (!EFI_DP_TYPE(fp, MEDIA_DEVICE, FILE_PATH)) {
 			printf("bad file path!\n");
-			f->close(f);
+			EFI_CALL(f->close(f));
 			return NULL;
 		}
 
-		filename = u16_strdup(fdp->str);
+		/*
+		 * UEFI specification requires pointers that are passed to
+		 * protocol member functions to be aligned.  So memcpy it
+		 * unconditionally
+		 */
+		if (fdp->dp.length <= offsetof(struct efi_device_path_file_path, str))
+			return NULL;
+		filename_sz = fdp->dp.length -
+			offsetof(struct efi_device_path_file_path, str);
+		filename = malloc(filename_sz);
 		if (!filename)
 			return NULL;
+		memcpy(filename, fdp->str, filename_sz);
 		EFI_CALL(ret = f->open(f, &f2, filename,
 				       EFI_FILE_MODE_READ, 0));
 		free(filename);