[PATCH v2 19/22] arm: stm32mp: add helper function stm32mp_is_closed()

[Patrice CHOTARD]

On 4/25/25 15:15, Patrice Chotard wrote:
> From: Patrick Delaunay <patrick.delaunay at foss.st.com>
> 
> Add the helper function stm32mp_is_closed() to check the "closed" state in
> product life cycle, when product secrets have  been provisioned into the
> device, by "secure secret provisioning" tools (SSP) for example.
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
> ---
> 
> (no changes since v1)
> 
>  arch/arm/mach-stm32mp/cmd_stm32key.c          | 22 +++++++++++++++++++
>  .../arm/mach-stm32mp/include/mach/sys_proto.h |  7 ++++++
>  2 files changed, 29 insertions(+)
> 
> diff --git a/arch/arm/mach-stm32mp/cmd_stm32key.c b/arch/arm/mach-stm32mp/cmd_stm32key.c
> index d6bf72d8e32..6bfa67859e1 100644
> --- a/arch/arm/mach-stm32mp/cmd_stm32key.c
> +++ b/arch/arm/mach-stm32mp/cmd_stm32key.c
> @@ -618,3 +618,25 @@ U_BOOT_CMD_WITH_SUBCMDS(stm32key, "Manage key on STM32", stm32key_help_text,
>  	U_BOOT_SUBCMD_MKENT(read, 2, 0, do_stm32key_read),
>  	U_BOOT_SUBCMD_MKENT(fuse, 3, 0, do_stm32key_fuse),
>  	U_BOOT_SUBCMD_MKENT(close, 2, 0, do_stm32key_close));
> +
> +/*
> + * Check the "closed" state in product life cycle, when product secrets have
> + * been provisioned into the device, by SSP tools for example.
> + * On closed devices, authentication is mandatory.
> + */
> +bool stm32mp_is_closed(void)
> +{
> +	struct udevice *dev;
> +	bool closed;
> +	int ret;
> +
> +	ret = get_misc_dev(&dev);
> +	if (ret)
> +		return false;
> +
> +	ret = read_close_status(dev, false, &closed);
> +	if (ret)
> +		return false;
> +
> +	return closed;
> +}
> diff --git a/arch/arm/mach-stm32mp/include/mach/sys_proto.h b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
> index bf1c39742c1..19073668497 100644
> --- a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
> +++ b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
> @@ -120,3 +120,10 @@ u32 get_otp(int index, int shift, int mask);
>  
>  uintptr_t get_stm32mp_rom_api_table(void);
>  uintptr_t get_stm32mp_bl2_dtb(void);
> +
> +/* helper function: check "closed" state in product "Life Cycle" */
> +#ifdef CONFIG_CMD_STM32KEY
> +bool stm32mp_is_closed(void);
> +#else
> +static inline bool stm32mp_is_closed(void) { return false; }
> +#endif
Applied to u-boot-stm32/master

Thanks
Patrice