[U-Boot] [PATCH v2 1/3] arm: omap: Define command for booting Android from eMMC

[Jaehoon Chung]

On 08/16/2017 09:55 PM, Sam Protsenko wrote:
> If SD card is present -- try to boot from it first. If no -- try to boot
> Android from eMMC.

Well, i didn't know exactly..but is it working?

> 
> Signed-off-by: Sam Protsenko <semen.protsenko at linaro.org>
> ---
> Changes in v2:
>  - Do not remove the attempt to boot regular Linux from eMMC
>    (just add Android boot in the end of the cycle)
> 
>  include/environment/ti/boot.h | 20 +++++++++++++++++++-
>  1 file changed, 19 insertions(+), 1 deletion(-)
> 
> diff --git a/include/environment/ti/boot.h b/include/environment/ti/boot.h
> index 1c3ae40a99..a05f5ba9bd 100644
> --- a/include/environment/ti/boot.h
> +++ b/include/environment/ti/boot.h
> @@ -28,7 +28,24 @@
>  	"vram=16M\0" \
>  	"partitions=" PARTS_DEFAULT "\0" \
>  	"optargs=\0" \
> -	"dofastboot=0\0"
> +	"dofastboot=0\0" \
> +	"emmc_android_boot=" \
> +		"setenv eval_bootargs setenv bootargs $bootargs; " \
> +		"run eval_bootargs; " \
> +		"setenv mmcdev 1; " \

Need to do "setenv mmcdev 1"? Did it already set before doing "run emmc_android_boot;"?

> +		"setenv fdt_part 3; " \
> +		"setenv boot_part 9; " \
> +		"setenv machid fe6; " \
> +		"mmc dev $mmcdev; " \
> +		"mmc rescan; " \

Why do "mmc rescan"?

> +		"part start mmc ${mmcdev} ${fdt_part} fdt_start; " \
> +		"part size mmc ${mmcdev} ${fdt_part} fdt_size; " \
> +		"part start mmc ${mmcdev} ${boot_part} boot_start; " \
> +		"part size mmc ${mmcdev} ${boot_part} boot_size; " \
> +		"mmc read ${fdtaddr} ${fdt_start} ${fdt_size}; " \
> +		"mmc read ${loadaddr} ${boot_start} ${boot_size}; " \
> +		"echo Booting from eMMC ...; " \
> +		"bootm $loadaddr $loadaddr $fdtaddr;\0"
>  
>  #ifdef CONFIG_OMAP54XX
>  
> @@ -76,6 +93,7 @@
>  	"setenv bootpart 1:2; " \
>  	"setenv mmcroot /dev/mmcblk0p2 rw; " \
>  	"run mmcboot;" \
> +	"run emmc_android_boot; " \
>  	""
>  
>  #endif /* CONFIG_OMAP54XX */
>