According to the FIT image specification, these properties are mandatory.
https://gitlab.denx.de/u-boot/u-boot/-/blob/master/doc/uImage.FIT/source_file_format.txt

I have verified that u-boot fails to boot if these properties are not specified

## Loading kernel from FIT Image at c2000000 ...
   Using 'conf-1' configuration
   Trying 'kernel' kernel subimage
     Description:  kernel
     Created:      2020-09-01   0:00:00 UTC
     Type:         Kernel Image
     Compression:  uncompressed
     Data Start:   0xc20000b4
     Data Size:    7329320 Bytes = 7 MiB
     Architecture: ARM
     OS:           Linux
     Load Address: unavailable
     Entry Point:  unavailable
     Hash algo:    sha256
     Hash value:   1d5ceba5d651e2b9bede9945427a7b759fe4891812eb9a67c53ecd4544c8fae8
   Verifying Hash Integrity ... sha256+ OK
Can't get image load address!

Regards, Alex


El mar., 10 nov. 2020 a las 15:38, Denis Osterland-Heim (<denis.osterland@diehl.com>) escribió:
Hi,

AFAIK bootloaders should have reasonable defaults for this values.
So they should be optional.

Regrads, Denis

Am Dienstag, den 10.11.2020, 10:11 +0100 schrieb avazquez.dev@gmail.com:
> From: AVazquez <avazquez.dev@gmail.com>
>
> Add mandatory properties for types kernel and ramdisk.
>
> Signed-off-by: AVazquez <avazquez.dev@gmail.com>
> ---
>  platforms/kernel-fit.in            | 10 ++++++++++
>  scripts/lib/ptxd_make_fit_image.sh |  4 ++++
>  2 files changed, 14 insertions(+)
>
> diff --git a/platforms/kernel-fit.in b/platforms/kernel-fit.in
> index 8cbc1a8..d917a97 100644
> --- a/platforms/kernel-fit.in
> +++ b/platforms/kernel-fit.in
> @@ -17,6 +17,16 @@ menuconfig KERNEL_FIT
>
>  if KERNEL_FIT
>
> +config KERNEL_FIT_LOAD
> +string
> +default "0xC0008000"
> +prompt "Kernel load address"
> +
> +config KERNEL_FIT_ENTRY
> +string
> +default "0xC0008000"
> +prompt "Kernel entry address"
> +
>  config KERNEL_FIT_SIGNED
>  bool
>  prompt "sign FIT image"
> diff --git a/scripts/lib/ptxd_make_fit_image.sh b/scripts/lib/ptxd_make_fit_image.sh
> index 9754d1e..4314b0e 100644
> --- a/scripts/lib/ptxd_make_fit_image.sh
> +++ b/scripts/lib/ptxd_make_fit_image.sh
> @@ -21,7 +21,10 @@ ptxd_make_image_fit_its() {
>  data = /incbin/("${image_kernel}");
>  type = "kernel";
>  arch = "$(ptxd_get_ptxconf PTXCONF_ARCH_STRING)";
> +os = "linux";
>  compression = "none";
> +load = <$(ptxd_get_ptxconf PTXCONF_KERNEL_FIT_LOAD)>;
> +entry = <$(ptxd_get_ptxconf PTXCONF_KERNEL_FIT_ENTRY)>;
>  hash-1 {
>  algo = "sha256";
>  };
> @@ -33,6 +36,7 @@ EOF
>  description = "initramfs";
>  data = /incbin/("${image_initramfs}");
>  type = "ramdisk";
> +os = "linux";
>  compression = "none";
>  hash-1 {
>  algo = "sha256";
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