[Uboot-stm32] [PATCH 10/16] board: stm32mp1: set environment variable fdtfile

[Patrice CHOTARD <patrice.chotard@st.com>]

Hi PAtrick

On 3/31/20 6:04 PM, Patrick Delaunay wrote:
> For booting Linux in the generic distro mechanism and support of
> FDTDIR in extlinux.conf , cmd/pxe.c retrieves the FDT file name
> from "fdtfile" environment variable.
>
> Dynamically build this variable with compatible of STMicroelectronics
> boards.
>
> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
> ---
>
>  board/st/stm32mp1/stm32mp1.c | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
> index 52881adef7..89a088cd28 100644
> --- a/board/st/stm32mp1/stm32mp1.c
> +++ b/board/st/stm32mp1/stm32mp1.c
> @@ -715,10 +715,19 @@ int board_late_init(void)
>  	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
>  				 &fdt_compat_len);
>  	if (fdt_compat && fdt_compat_len) {
> -		if (strncmp(fdt_compat, "st,", 3) != 0)
> +		if (strncmp(fdt_compat, "st,", 3) != 0) {
>  			env_set("board_name", fdt_compat);
> -		else
> +		} else {
> +			char dtb_name[256];
> +			int buf_len = sizeof(dtb_name);
> +
>  			env_set("board_name", fdt_compat + 3);
> +
> +			strncpy(dtb_name, fdt_compat + 3, buf_len);
> +			buf_len -= strlen(fdt_compat + 3);
> +			strncat(dtb_name, ".dtb", buf_len);
> +			env_set("fdtfile", dtb_name);
> +		}
>  	}
>  	ret = uclass_get_device_by_driver(UCLASS_MISC,
>  					  DM_GET_DRIVER(stm32mp_bsec),

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>

Thanks