1.. SPDX-License-Identifier: GPL-2.0+
2
3UEFI
4====
5
6Example FIT image description file demonstrating the usage of the
7bootm command to launch UEFI binaries.
8
9Two boot configurations are available to enable booting GRUB2 on QEMU,
10the former uses a FDT blob contained in the FIT image, while the later
11relies on the FDT provided by the board emulator.
12
13::
14
15    /dts-v1/;
16
17    / {
18        description = "GRUB2 EFI and QEMU FDT blob";
19        #address-cells = <1>;
20
21        images {
22            efi-grub {
23                description = "GRUB EFI Firmware";
24                data = /incbin/("bootarm.efi");
25                type = "kernel_noload";
26                arch = "arm";
27                os = "efi";
28                compression = "none";
29                load = <0x0>;
30                entry = <0x0>;
31                hash-1 {
32                    algo = "sha256";
33                };
34            };
35
36            fdt-qemu {
37                description = "QEMU DTB";
38                data = /incbin/("qemu-arm.dtb");
39                type = "flat_dt";
40                arch = "arm";
41                compression = "none";
42                hash-1 {
43                    algo = "sha256";
44                };
45            };
46        };
47
48        configurations {
49            default = "config-grub-fdt";
50
51            config-grub-fdt {
52                description = "GRUB EFI Boot w/ FDT";
53                kernel = "efi-grub";
54                fdt = "fdt-qemu";
55                signature-1 {
56                    algo = "sha256,rsa2048";
57                    key-name-hint = "dev";
58                    sign-images = "kernel", "fdt";
59                };
60            };
61
62            config-grub-nofdt {
63                description = "GRUB EFI Boot w/o FDT";
64                kernel = "efi-grub";
65                signature-1 {
66                    algo = "sha256,rsa2048";
67                    key-name-hint = "dev";
68                    sign-images = "kernel";
69                };
70            };
71        };
72    };
73