[PATCH] configs: stm32mp: force empty PREBOOT

[Tom Rini]

On Wed, Oct 07, 2020 at 10:10:20AM +0200, Patrick Delaunay wrote:

> This patch remove the default preboot command 'usb start' for
> STMicroelectronics board. These command is added by the
> commit 324d77998ed6 ("Define default CONFIG_PREBOOT with right config
> option")' and commit 44758771eefb ("arm: move CONFIG_PREBOOT="usb start"
> to KConfig").
> 
> The USB storage boot (not activated in stm32mp1.h) is correctly
> managed by distro boot command 'usb_boot' (defined in
> include/config_distro_bootcmd.h, it include 'usb start')
> and USB keyboard is not supported in stm32mp15 defconfig.
> 
> So this patch avoids unnecessary USB initialization which slows
> down the start-up:
>   starting USB...
>   Bus usbh-ehci at 5800d000: USB EHCI 1.00
>   scanning bus usbh-ehci at 5800d000 for devices... 3 USB Device(s) found
>          scanning usb for storage devices... 1 Storage Device(s) found
> 
> Cc: Peter Robinson <pbrobinson at gmail.com>
> Cc: Jonas Smedegaard <dr at jones.dk>
> Cc: Neil Armstrong <narmstrong at baylibre.com>
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> ---
> 
>  configs/stm32mp15_basic_defconfig   | 1 +
>  configs/stm32mp15_trusted_defconfig | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
> index a8c4112dbe..f937a0278d 100644
> --- a/configs/stm32mp15_basic_defconfig
> +++ b/configs/stm32mp15_basic_defconfig
> @@ -19,6 +19,7 @@ CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
>  CONFIG_DISTRO_DEFAULTS=y
>  CONFIG_FIT=y
>  CONFIG_BOOTCOMMAND="run bootcmd_stm32mp"
> +CONFIG_PREBOOT=""
>  CONFIG_BOARD_EARLY_INIT_F=y
>  CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION=y
>  CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION=3
> diff --git a/configs/stm32mp15_trusted_defconfig b/configs/stm32mp15_trusted_defconfig
> index 0792884a9d..b0be064cc3 100644
> --- a/configs/stm32mp15_trusted_defconfig
> +++ b/configs/stm32mp15_trusted_defconfig
> @@ -12,6 +12,7 @@ CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
>  CONFIG_DISTRO_DEFAULTS=y
>  CONFIG_FIT=y
>  CONFIG_BOOTCOMMAND="run bootcmd_stm32mp"
> +CONFIG_PREBOOT=""
>  CONFIG_SYS_PROMPT="STM32MP> "
>  CONFIG_CMD_ADTIMG=y
>  # CONFIG_CMD_ELF is not set

In this case you should disable CONFIG_USE_PREBOOT.

-- 
Tom
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