[PATCH 01/12] rockchip: puma-rk3399: fix boot_targets swap depending on U-Boot proper load medium

[Kever Yang]

On 2022/7/23 00:06, Quentin Schulz wrote:
> From: Quentin Schulz <quentin.schulz at theobroma-systems.com>
>
> distroboot should try first on the same MMC medium as the one the SPL
> loaded U-Boot proper from. This was the case when the introducing commit
> was merged because the default order was eMMC first and then SD card.
> The check was therefore made only on whether we booted from SD card,
> because otherwise the order was the expected one.
> However, in commit b212ad24a604 ("rockchip: Fix MMC boot order"), the
> order was swapped. Meaning our simple check is now useless.
>
> Let's fix that by accounting for all scenarii: default boot_targets has
> mmc0 first but booting from SD Card, mmc1 first but booting from eMMC.
>
> Fixes: b212ad24a604 ("rockchip: Fix MMC boot order")
> Cc: Quentin Schulz <foss+uboot at 0leil.net>
> Signed-off-by: Quentin Schulz <quentin.schulz at theobroma-systems.com>

I will apply this first, but it will be better to use boot script, too 
many logic to get the correct boot dev with this.


Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever

> ---
>
> Depends on
> https://lore.kernel.org/u-boot/20220715151552.953654-1-foss+uboot@0leil.net/
> https://lore.kernel.org/u-boot/20220715151552.953654-2-foss+uboot@0leil.net/
>
>   .../puma_rk3399/puma-rk3399.c                 | 25 ++++++++++---------
>   1 file changed, 13 insertions(+), 12 deletions(-)
>
> diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c
> index deeba3084a..ce3436b770 100644
> --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c
> +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c
> @@ -77,18 +77,16 @@ static int setup_boottargets(void)
>   	}
>   
>   	/*
> -	 * Only run, if booting from mmc1 (i.e. /mmc at fe320000) and
> -	 * only consider cases where the default boot-order first
> -	 * tries to boot from mmc0 (eMMC) and then from mmc1
> -	 * (i.e. external SD).
> -	 *
> -	 * In other words: the SD card will be moved to earlier in the
> -	 * order, if U-Boot was also loaded from the SD-card.
> +	 * Make the default boot medium between SD Card and eMMC, the one that
> +	 * was used to load U-Boot proper. If SPI-NOR flash was used, keep
> +	 * original default order.
>   	 */
> -	if (!strcmp(boot_device, "/mmc at fe320000")) {
> +	if (strcmp(boot_device, "/spi at ff1d0000/flash at 0")) {
> +		bool sd_booted = !strcmp(boot_device, "/mmc at fe320000");
>   		char *mmc0, *mmc1;
>   
> -		debug("%s: booted from SD-Card\n", __func__);
> +		debug("%s: booted from %s\n", __func__,
> +		      sd_booted ? "SD-Card" : "eMMC");
>   		mmc0 = strstr(env, "mmc0");
>   		mmc1 = strstr(env, "mmc1");
>   
> @@ -98,10 +96,13 @@ static int setup_boottargets(void)
>   		}
>   
>   		/*
> -		 * If mmc0 comes first in the boot order, we need to change
> -		 * the strings to make mmc1 first.
> +		 * If mmc0 comes first in the boot order and U-Boot proper was
> +		 * loaded from mmc1, swap mmc0 and mmc1 in the list.
> +		 * If mmc1 comes first in the boot order and U-Boot proper was
> +		 * loaded from mmc0, swap mmc0 and mmc1 in the list.
>   		 */
> -		if (mmc0 < mmc1) {
> +		if ((mmc0 < mmc1 && sd_booted) ||
> +		    (mmc0 > mmc1 && !sd_booted)) {
>   			mmc0[3] = '1';
>   			mmc1[3] = '0';
>   			debug("%s: set boot_targets to: %s\n", __func__, env);