Merge tag 'efi-2019-07-rc3' of git://git.denx.de/u-boot-efi

Pull request for UEFI sub-system for v2019.07-rc3

The development target for the UEFI sub-system is EBBR compliance. We have
already implemented some further protocols to enable running the UEFI Shell
and the UEFI SCT test suite.

As some boards are severely memory constrained make some of these extras
customizable.

Provide bug fixes. The most prominent ones let us pass the UEFI SCT memory
allocation tests.

2 files changed, 46 insertions, 65 deletions

diff --git a/cmd/Kconfig b/cmd/Kconfig
index fd1beb06849..0d36da2a5c4 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1436,6 +1436,7 @@ config CMD_DISPLAY
 config CMD_EFIDEBUG
 	bool "efidebug - display/configure UEFI environment"
 	depends on EFI_LOADER
+	select EFI_DEVICE_PATH_TO_TEXT
 	default n
 	help
 	  Enable the 'efidebug' command which provides a subset of UEFI
diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 52116b308cc..c19256e00dc 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -196,11 +196,16 @@ static void *get_config_table(const efi_guid_t *guid)
 
 /**
  * efi_install_fdt() - install fdt passed by a command argument
+ *
+ * If fdt_opt is available, the device tree located at that memory address will
+ * will be installed as configuration table, otherwise the device tree located
+ * at the address indicated by environment variable fdtcontroladdr will be used.
+ *
+ * On architectures (x86) using ACPI tables device trees shall not be installed
+ * as configuration table.
+ *
  * @fdt_opt:	pointer to argument
  * Return:	status code
- *
- * If specified, fdt will be installed as configuration table,
- * otherwise no fdt will be passed.
  */
 static efi_status_t efi_install_fdt(const char *fdt_opt)
 {
@@ -314,32 +319,15 @@ static efi_status_t do_bootefi_exec(efi_handle_t handle)
 }
 
 /**
- * do_efibootmgr() - execute EFI Boot Manager
+ * do_efibootmgr() - execute EFI boot manager
  *
- * @fdt_opt:	string of fdt start address
  * Return:	status code
- *
- * Execute EFI Boot Manager
  */
-static int do_efibootmgr(const char *fdt_opt)
+static int do_efibootmgr(void)
 {
 	efi_handle_t handle;
 	efi_status_t ret;
 
-	/* Initialize EFI drivers */
-	ret = efi_init_obj_list();
-	if (ret != EFI_SUCCESS) {
-		printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
-		       ret & ~EFI_ERROR_MASK);
-		return CMD_RET_FAILURE;
-	}
-
-	ret = efi_install_fdt(fdt_opt);
-	if (ret == EFI_INVALID_PARAMETER)
-		return CMD_RET_USAGE;
-	else if (ret != EFI_SUCCESS)
-		return CMD_RET_FAILURE;
-
 	ret = efi_bootmgr_load(&handle);
 	if (ret != EFI_SUCCESS) {
 		printf("EFI boot manager: Cannot load any image\n");
@@ -355,16 +343,15 @@ static int do_efibootmgr(const char *fdt_opt)
 }
 
 /*
- * do_bootefi_image() - execute EFI binary from command line
+ * do_bootefi_image() - execute EFI binary
+ *
+ * Set up memory image for the binary to be loaded, prepare device path, and
+ * then call do_bootefi_exec() to execute it.
  *
  * @image_opt:	string of image start address
- * @fdt_opt:	string of fdt start address
  * Return:	status code
- *
- * Set up memory image for the binary to be loaded, prepare
- * device path and then call do_bootefi_exec() to execute it.
  */
-static int do_bootefi_image(const char *image_opt, const char *fdt_opt)
+static int do_bootefi_image(const char *image_opt)
 {
 	void *image_buf;
 	struct efi_device_path *device_path, *image_path;
@@ -374,20 +361,6 @@ static int do_bootefi_image(const char *image_opt, const char *fdt_opt)
 	efi_handle_t mem_handle = NULL, handle;
 	efi_status_t ret;
 
-	/* Initialize EFI drivers */
-	ret = efi_init_obj_list();
-	if (ret != EFI_SUCCESS) {
-		printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
-		       ret & ~EFI_ERROR_MASK);
-		return CMD_RET_FAILURE;
-	}
-
-	ret = efi_install_fdt(fdt_opt);
-	if (ret == EFI_INVALID_PARAMETER)
-		return CMD_RET_USAGE;
-	else if (ret != EFI_SUCCESS)
-		return CMD_RET_FAILURE;
-
 #ifdef CONFIG_CMD_BOOTEFI_HELLO
 	if (!strcmp(image_opt, "hello")) {
 		char *saddr;
@@ -547,33 +520,16 @@ static void bootefi_run_finish(struct efi_loaded_image_obj *image_obj,
 }
 
 /**
- * do_efi_selftest() - execute EFI Selftest
+ * do_efi_selftest() - execute EFI selftest
  *
- * @fdt_opt:	string of fdt start address
  * Return:	status code
- *
- * Execute EFI Selftest
  */
-static int do_efi_selftest(const char *fdt_opt)
+static int do_efi_selftest(void)
 {
 	struct efi_loaded_image_obj *image_obj;
 	struct efi_loaded_image *loaded_image_info;
 	efi_status_t ret;
 
-	/* Initialize EFI drivers */
-	ret = efi_init_obj_list();
-	if (ret != EFI_SUCCESS) {
-		printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
-		       ret & ~EFI_ERROR_MASK);
-		return CMD_RET_FAILURE;
-	}
-
-	ret = efi_install_fdt(fdt_opt);
-	if (ret == EFI_INVALID_PARAMETER)
-		return CMD_RET_USAGE;
-	else if (ret != EFI_SUCCESS)
-		return CMD_RET_FAILURE;
-
 	ret = bootefi_test_prepare(&image_obj, &loaded_image_info,
 				   "\\selftest", "efi_selftest");
 	if (ret != EFI_SUCCESS)
@@ -587,20 +543,44 @@ static int do_efi_selftest(const char *fdt_opt)
 }
 #endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
 
-/* Interpreter command to boot an arbitrary EFI image from memory */
+/**
+ * do_bootefi() - execute `bootefi` command
+ *
+ * @cmdtp:	table entry describing command
+ * @flag:	bitmap indicating how the command was invoked
+ * @argc:	number of arguments
+ * @argv:	command line arguments
+ * Return:	status code
+ */
 static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
+	efi_status_t ret;
+
 	if (argc < 2)
 		return CMD_RET_USAGE;
 
+	/* Initialize EFI drivers */
+	ret = efi_init_obj_list();
+	if (ret != EFI_SUCCESS) {
+		printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
+		       ret & ~EFI_ERROR_MASK);
+		return CMD_RET_FAILURE;
+	}
+
+	ret = efi_install_fdt(argc > 2 ? argv[2] : NULL);
+	if (ret == EFI_INVALID_PARAMETER)
+		return CMD_RET_USAGE;
+	else if (ret != EFI_SUCCESS)
+		return CMD_RET_FAILURE;
+
 	if (!strcmp(argv[1], "bootmgr"))
-		return do_efibootmgr(argc > 2 ? argv[2] : NULL);
+		return do_efibootmgr();
 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
 	else if (!strcmp(argv[1], "selftest"))
-		return do_efi_selftest(argc > 2 ? argv[2] : NULL);
+		return do_efi_selftest();
 #endif
 
-	return do_bootefi_image(argv[1], argc > 2 ? argv[2] : NULL);
+	return do_bootefi_image(argv[1]);
 }
 
 #ifdef CONFIG_SYS_LONGHELP