Re: [PATCH v11 05/15] stm32mp1: dk2: Add image information for capsule updates

[Takahiro Akashi <takahiro.akashi@linaro.org>]

Hi Sughosh,

On Wed, Sep 28, 2022 at 02:59:46PM +0530, Sughosh Ganu wrote:
> Enabling capsule update functionality on the platform requires
> populating information on the images that are to be updated using the
> functionality. Do so for the DK2 board.
> 
> Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
> ---
> Changes since V10:
> * Use image_index value of 1 for the FIP image as it is now relevant
> 
>  board/st/stm32mp1/stm32mp1.c       | 18 ++++++++++++++++++
>  include/configs/stm32mp15_common.h |  4 ++++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
> index 8c162b42a5..e43dab018f 100644
> --- a/board/st/stm32mp1/stm32mp1.c
> +++ b/board/st/stm32mp1/stm32mp1.c
> @@ -11,6 +11,7 @@
>  #include <clk.h>
>  #include <config.h>
>  #include <dm.h>
> +#include <efi_loader.h>
>  #include <env.h>
>  #include <env_internal.h>
>  #include <fdt_simplefb.h>
> @@ -87,6 +88,16 @@
>  #define USB_START_LOW_THRESHOLD_UV	1230000
>  #define USB_START_HIGH_THRESHOLD_UV	2150000
>  
> +#if CONFIG_IS_ENABLED(EFI_HAVE_CAPSULE_SUPPORT)
> +struct efi_fw_image fw_images[1];
> +
> +struct efi_capsule_update_info update_info = {
> +	.images = fw_images,
> +};
> +
> +u8 num_image_type_guids = ARRAY_SIZE(fw_images);

The definition of num_image_type_guids is always the same
across boards. Why do we need it for every platform?
I believe that we can remove it. Anyhow it's not documented
in doc/develop/uefi/uefi.rst.

> +#endif /* EFI_HAVE_CAPSULE_SUPPORT */
> +
>  int board_early_init_f(void)
>  {
>  	/* nothing to do, only used in SPL */
> @@ -666,6 +677,13 @@ int board_init(void)
>  
>  	setup_led(LEDST_ON);
>  
> +#if CONFIG_IS_ENABLED(EFI_HAVE_CAPSULE_SUPPORT)
> +	efi_guid_t image_type_guid = STM32MP_FIP_IMAGE_GUID;
> +
> +	guidcpy(&fw_images[0].image_type_id, &image_type_guid);
> +	fw_images[0].fw_name = u"STM32MP-FIP";
> +	fw_images[0].image_index = 1;

Then, we should describe that image_index must be 1 to num_image_type_guids
(or strictly, number of descriptors returned by GetImageInfo()) in
the document above.
(I hope that you add a sanity checker against it as well.)

-Takahiro Akashi

> +#endif
>  	return 0;
>  }
>  
> diff --git a/include/configs/stm32mp15_common.h b/include/configs/stm32mp15_common.h
> index c5412ffeb3..bb19dae945 100644
> --- a/include/configs/stm32mp15_common.h
> +++ b/include/configs/stm32mp15_common.h
> @@ -34,6 +34,10 @@
>  #define CONFIG_SERVERIP                 192.168.1.1
>  #endif
>  
> +#define STM32MP_FIP_IMAGE_GUID \
> +	EFI_GUID(0x19d5df83, 0x11b0, 0x457b, 0xbe, 0x2c, \
> +		 0x75, 0x59, 0xc1, 0x31, 0x42, 0xa5)
> +
>  /*****************************************************************************/
>  #ifdef CONFIG_DISTRO_DEFAULTS
>  /*****************************************************************************/
> -- 
> 2.34.1
>