Yocto recipe for u-boot logo

[Egor_I_InertgasM]

How can I create a Yocto recipe to set the logo for initial stages of booting for i.MX 8M Mini?

Not by manipulating with u-boot command line but by building the image by Yocto.

[Egor_I_InertgasM · Accepted solution]

Not the best way, but it works

meta-my-layer/recipes-bsp/u-boot-imx$ tree
.
├── files
│   ├── freescale.bmp
│   └── imx8mm_evk.h
└── u-boot-imx_2020.04.bbappend

freescale.bmp must be 8-bit. Use this command to convert from png:

convert freescale.png -type Palette -colors 224 -depth 8 -compress none -verbose BMP3:freescale.bmp

imx8mm_evk.h can be found in 

.../imx-yocto-bsp/build-imx8mmevk/tmp/work/imx8mmevk-poky-linux/u-boot-imx/1_2020.04-r0/git/include/configs/imx8mm_evk.h

copy to the files folder of the recipe and edit lines of #define

#define CONFIG_EXTRA_ENV_SETTINGS \

 to place logo to the center add

	"splashpos=m,m\0" \

 save, build.

[Egor_I_InertgasM]

I already have a layer and replace a logo. But I need to set U-boot variable splashpos=m,m.

Files tree is

meta-my_layer$ tree
.
├── conf
│   └── layer.conf
├── recipes-bsp
│   └── u-boot-imx
│       ├── files
│       │   ├── freescale.bmp
│       │   └── imx8mm_evk.patch
│       └── u-boot-imx_2020.04.bbappend
└── recipes-core
    └── psplash
        ├── files
        │   ├── psplash-bar-img.png
        │   ├── psplash-colors.h
        │   └── psplash-poky-img.png
        └── psplash_git.bbappend

imx8mm_evk.patch is

--- imx8mm_evk.h
+++ imx8mm_evk.h
@@ -122,7 +122,6 @@
 	"script=boot.scr\0" \
 	"image=Image\0" \
 	"splashimage=0x50000000\0" \
-	"splashpos=m,m\0 " \
 	"console=ttymxc1,115200\0" \
 	"fdt_addr=0x43000000\0"			\
 	"fdt_high=0xffffffffffffffff\0"		\

 u-boot-imx_2020.04.bbappend is

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"

PRINC = "8"

#DEPENDS += "u-boot"

SRC_URI += "file://freescale.bmp \
            file://imx8mm_evk.patch \
            "

do_configure_append () {
	cd ${S}
	cp ../freescale.bmp ./tools/logos/freescale.bmp
}

But I got

can't find file to patch at input line 3
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|--- imx8mm_evk.h
|+++ imx8mm_evk.h
--------------------------

And there are no any files in the work/imx8mmevk-poky-linux/u-boot-imx/1_2020.04-r0/git/include/configs where imx8mm_evk.h .

Probably patch applies before files appear in the directory.

How to fix the recipe?

[Bio_TICFSL]

Hello Egor,

You can view this site for your developement:

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Task-10-How-to-create-a-custom-layer/ta-...

Regards