On Mon, Oct 14, 2019 at 08:39:21AM +0200, Ahmad Fatoum wrote:
> Now with the SD/MMC controller supported, lets add a bbu handler, so we
> can use it to update the second stage boot loader partition.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> arch/arm/boards/stm32mp157c-dk2/board.c | 14 ++++++++++++++
> arch/arm/mach-stm32mp/include/mach/bbu.h | 14 ++++++++++++++
> 2 files changed, 28 insertions(+)
> create mode 100644 arch/arm/mach-stm32mp/include/mach/bbu.h
>
> diff --git a/arch/arm/boards/stm32mp157c-dk2/board.c b/arch/arm/boards/stm32mp157c-dk2/board.c
> index 9cb861af85d8..23eb6728b15a 100644
> --- a/arch/arm/boards/stm32mp157c-dk2/board.c
> +++ b/arch/arm/boards/stm32mp157c-dk2/board.c
> @@ -4,6 +4,7 @@
> #include <init.h>
> #include <asm/memory.h>
> #include <mach/stm32.h>
> +#include <mach/bbu.h>
>
> static int dk2_mem_init(void)
> {
> @@ -15,3 +16,16 @@ static int dk2_mem_init(void)
> return 0;
> }
> mem_initcall(dk2_mem_init);
> +
> +static int dk2_postcore_init(void)
> +{
> + if (!of_machine_is_compatible("st,stm32mp157c-dk2"))
> + return 0;
> +
> + stm32mp_bbu_mmc_register_handler("sd", "/dev/disk0.ssbl",
> + BBU_HANDLER_FLAG_DEFAULT);
You should create an alias in dt for the sd device node (might exist
already, don't know) and use mci_of_parse_node() in the SD driver. With
this you get consistent names. "disk0" will be different devices
depending on probe order.
Sascha
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