Add a new OS type to be used for chain-loading an EFI compatible firmware or boot loader like GRUB2, possibly in a verified boot scenario.
Bellow is sample ITS file that generates a FIT image supporting secure boot. Please note the presence of 'os = "efi";' line, which identifies the currently introduced OS type:
/ { #address-cells = <1>;
images { efi-grub { description = "GRUB EFI"; data = /incbin/("EFI/BOOT/bootarm.efi"); type = "kernel_noload"; arch = "arm"; os = "efi"; compression = "none"; load = <0x0>; entry = <0x0>; hash-1 { algo = "sha256"; }; }; };
configurations { default = "config-grub"; config-grub { kernel = "efi-grub"; signature-1 { algo = "sha256,rsa2048"; sign-images = "kernel"; }; }; }; };
Signed-off-by: Cristian Ciocaltea cristian.ciocaltea@gmail.com --- common/image-fit.c | 3 ++- common/image.c | 1 + include/image.h | 1 + 3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/common/image-fit.c b/common/image-fit.c index 5c63c769de..19e313bf41 100644 --- a/common/image-fit.c +++ b/common/image-fit.c @@ -1925,7 +1925,8 @@ int fit_image_load(bootm_headers_t *images, ulong addr, image_type == IH_TYPE_FPGA || fit_image_check_os(fit, noffset, IH_OS_LINUX) || fit_image_check_os(fit, noffset, IH_OS_U_BOOT) || - fit_image_check_os(fit, noffset, IH_OS_OPENRTOS); + fit_image_check_os(fit, noffset, IH_OS_OPENRTOS) || + fit_image_check_os(fit, noffset, IH_OS_EFI);
/* * If either of the checks fail, we should report an error, but diff --git a/common/image.c b/common/image.c index f17fa40c49..2e0e2b0e7f 100644 --- a/common/image.c +++ b/common/image.c @@ -134,6 +134,7 @@ static const table_entry_t uimage_os[] = { { IH_OS_OPENRTOS, "openrtos", "OpenRTOS", }, #endif { IH_OS_OPENSBI, "opensbi", "RISC-V OpenSBI", }, + { IH_OS_EFI, "efi", "EFI Firmware" },
{ -1, "", "", }, }; diff --git a/include/image.h b/include/image.h index f4d2aaf53e..4a280b78e7 100644 --- a/include/image.h +++ b/include/image.h @@ -157,6 +157,7 @@ enum { IH_OS_ARM_TRUSTED_FIRMWARE, /* ARM Trusted Firmware */ IH_OS_TEE, /* Trusted Execution Environment */ IH_OS_OPENSBI, /* RISC-V OpenSBI */ + IH_OS_EFI, /* EFI Firmware (e.g. GRUB2) */
IH_OS_COUNT, };