On 05/23/2017 12:42 PM, Franklin S Cooper Jr wrote:
> Runtime U-boot dtb selection is generally a two step process. First step
> is to simply use an initial generic dtb. The second step is to select
> the dtb and perhaps execute additional code ones U-boot knows what board
> it is running on. Embedded_dtb_select handles the second step by allowing
> board specific code to run and perform what ever necessary configuration
> that is needed.
>
> Signed-off-by: Franklin S Cooper Jr <[email protected]>
> ---
> common/Kconfig | 10 ++++++++++
> common/board_f.c | 3 +++
> include/common.h | 4 ++++
> 3 files changed, 17 insertions(+)
>
> diff --git a/common/Kconfig b/common/Kconfig
> index 2429953..b6327f0 100644
> --- a/common/Kconfig
> +++ b/common/Kconfig
> @@ -421,6 +421,16 @@ config SYS_STDIO_DEREGISTER
>
> endmenu
>
> +config DTB_RESELECT
> + bool "Support swapping dtbs at a later point in boot"
> + depends on FIT_EMBED
> + default n
I will be sending a new rev. I missed dropping the above statement based
on the rev 1 comment.
> + help
> + It is possible during initial boot you may need to use a generic
> + dtb until you can fully determine the board your running on. This
> + config allows boards to implement a function at a later point
> + during boot to switch to the "correct" dtb.
> +
> config FIT_EMBED
> bool "Support a FIT image embedded in the U-boot image"
> default n
> diff --git a/common/board_f.c b/common/board_f.c
> index a212f2b..b383239 100644
> --- a/common/board_f.c
> +++ b/common/board_f.c
> @@ -759,6 +759,9 @@ static const init_fnc_t init_sequence_f[] = {
> #if defined(CONFIG_DISPLAY_CPUINFO)
> print_cpuinfo, /* display cpu info (and speed) */
> #endif
> +#if defined(CONFIG_DTB_RESELECT)
> + embedded_dtb_select,
> +#endif
> #if defined(CONFIG_DISPLAY_BOARDINFO)
> show_board_info,
> #endif
> diff --git a/include/common.h b/include/common.h
> index 45f190a..ebc716e 100644
> --- a/include/common.h
> +++ b/include/common.h
> @@ -478,6 +478,10 @@ void pci_init_board(void);
> #endif
> #endif
>
> +#if defined(CONFIG_DTB_RESELECT)
> +int embedded_dtb_select(void);
> +#endif
> +
> int misc_init_f (void);
> int misc_init_r (void);
>
>
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