doc: Add sample uefi.its image description file

This patch adds an example FIT image description file demonstrating
the usage of bootm command to securely launch UEFI binaries.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

1 files changed, 67 insertions, 0 deletions

diff --git a/doc/uImage.FIT/uefi.its b/doc/uImage.FIT/uefi.its
new file mode 100644
index 0000000000..378ca4ed8d
--- /dev/null
+++ b/doc/uImage.FIT/uefi.its
@@ -0,0 +1,67 @@
+/*
+ * Example FIT image description file demonstrating the usage of the
+ * bootm command to launch UEFI binaries.
+ *
+ * Two boot configurations are available to enable booting GRUB2 on QEMU,
+ * the former uses a FDT blob contained in the FIT image, while the later
+ * relies on the FDT provided by the board emulator.
+ */
+
+/dts-v1/;
+
+/ {
+	description = "GRUB2 EFI and QEMU FDT blob";
+	#address-cells = <1>;
+
+	images {
+		efi-grub {
+			description = "GRUB EFI Firmware";
+			data = /incbin/("bootarm.efi");
+			type = "kernel_noload";
+			arch = "arm";
+			os = "efi";
+			compression = "none";
+			load = <0x0>;
+			entry = <0x0>;
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+
+		fdt-qemu {
+			description = "QEMU DTB";
+			data = /incbin/("qemu-arm.dtb");
+			type = "flat_dt";
+			arch = "arm";
+			compression = "none";
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		default = "config-grub-fdt";
+
+		config-grub-fdt {
+			description = "GRUB EFI Boot w/ FDT";
+			kernel = "efi-grub";
+			fdt = "fdt-qemu";
+			signature-1 {
+				algo = "sha256,rsa2048";
+				key-name-hint = "dev";
+				sign-images = "kernel", "fdt";
+			};
+		};
+
+		config-grub-nofdt {
+			description = "GRUB EFI Boot w/o FDT";
+			kernel = "efi-grub";
+			signature-1 {
+				algo = "sha256,rsa2048";
+				key-name-hint = "dev";
+				sign-images = "kernel";
+			};
+		};
+	};
+};