imx8mm-lpddr4-evk yocto build

[vignesh-baskaran]

Hi,

we were trying to build images for imx8mm-lpddr4-evk. but we facing issues.

$ DISTRO=fsl-imx-wayland MACHINE=imx8mm-lpddr4-evk source imx-setup-release.sh -b <build folder>

$ bitbake core-image-minimal

which we build successfully. but we did modification in u-boot the final image file didnt get modified. Please refer below commands

$ vim /tmp/work/imx8mm_lpddr4_evk-poky-linux/u-boot-imx/2022.04-r0/git/ <made changes>

$ bitbake -c compile u-boot / u-boot-imx / imx-boot

$ bitbake  u-boot / u-boot-imx / imx-boot

$ bitbake core-image-minimal

At this point we observe the u-boot file get updated but not the final flash.bin file.

We facing this issue and trying to resolve but end up come to same place. Can you help us what was the extra command to create flash.bin?

Thanks.

Vignesh

[Harvey021]

Hi @vignesh-baskaran 

Please try to add parameter "-f" while compiling target: bitbake -c compile -f 

Best regards

Harvey

[vignesh-baskaran]

Hi @Harvey021,

We tried that, that didnt help.

is there any bitbake command to build flash.bin after u-boot binary images build.

[Harvey021]

Hi @vignesh-baskaran 

You can refer to 4.5.13 How to build imx-boot image by using imx-mkimage of Linux User guide

using imx-mkimage.

Best regards

Harvey

[AlekseyM]

Hi! I have a trouble with YOCTO imx-mkimage.
I do

bitbake -c compile u-boot-imx

do changes in /tmp/work/imx8mm_ddr4_evk-poky-linux/u-boot-imx/2022.04-r0/git/ spl.c and imx8mm-ddr4-evk spl.c+dts

bitbake u-boot-imx
copieng file (refer to 4.5.13 How to build imx-boot image by using imx-mkimage of Linux User guide)

bitbake imx-mkinage

but imx-boot-imx8mm-ddr4-evk-sd.bin-flash_ddr4_evk not include my changes. 
What did I do wrong?

[vignesh-baskaran]

Hi @AlekseyM ,

If you still facing this issue, can you please check this link

Thanks,

Vignesh

[vignesh-baskaran]

We also tried creating patch and adding to sources/meta-imx/meta-bsp/recipes-bsp/u-bootu-boot-imx_2022.04.bb

FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
SRC_URI += "file://0001-DTB-Makefile.patch"

these were the only changes we made. Please refer below.

From 4a738b4639bb800b3d34aba6f9c3c792feb45ca8 Mon Sep 17 00:00:00 2001
From: Vignesh Baskaran <vigneshbbaskaran@gmail.com>
Date: Thu, 23 Feb 2023 16:24:03 +0530
Subject: [PATCH] DTB & Makefile

Signed-off-by: Vignesh Baskaran <vigneshbbaskaran@gmail.com>
---
Makefile | 2 +-
arch/arm/dts/imx8mm-evk.dts | 17 +++++++++++++++++
2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 33615b8706..c73f719fe8 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@
VERSION = 2022
PATCHLEVEL = 04
SUBLEVEL =
-EXTRAVERSION =
+EXTRAVERSION = "VIgnesh Baskaran"
NAME =

# *DOCUMENTATION*
diff --git a/arch/arm/dts/imx8mm-evk.dts b/arch/arm/dts/imx8mm-evk.dts
index c07eb8be8e..4c72a3f03b 100644
--- a/arch/arm/dts/imx8mm-evk.dts
+++ b/arch/arm/dts/imx8mm-evk.dts
@@ -69,7 +69,24 @@
status = "okay";
};

+&ecspi2 {
+ fsl,spi-num-chipselects = <1>;
+ cs-gpios = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ecspi2>;
+ status = "okay";
+};
+
&iomuxc {
+
+ pinctrl_ecspi2: ecspi2grp {
+ fsl,pins = <
+ MX8MM_IOMUXC_ECSPI2_MISO_ECSPI2_MISO 0x00000116
+ MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI 0x00000116
+ MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK 0x00001916
+ MX8MM_IOMUXC_ECSPI2_SS0_ECSPI2_SS0 0x00000116
+ >;
+ };
pinctrl_flexspi: flexspigrp {
fsl,pins = <
MX8MM_IOMUXC_NAND_ALE_QSPI_A_SCLK 0x1c2

but while compile $ bitbake core-image-minmal

" u-boot-imx-2022.04-r0 do_compile " and goes to 99% and in infinite loop.

Thanks

Vignesh