U-Boot build not creating u-boot.imx

[michaelperreca]

Hello all,

I'm attempting to create a U-Boot image from scratch for my iMX6UL EVK but every time i attempt to create it, it never creates a u-boot.imx.  Only a u-boot.bin.

Here are the commands I'm using:

git clone git://git.denx.de/u-boot-imx.git

cd u-boot-imx

export ARCH=arm
CROSS_COMPILE=arm-linux-gnueabihf-

make mrproper

make mx6ul_14x14_evk_defconfig

make

now it compiles properly but just doesn't make the u-boot.imx.

is there some sort of switch I'm not throwing?

[fabio_estevam]

Ok, good, so 2017.07 which will be released soon will be working properly.

[danielbujak]

Hi Michael, I'm trying to accomplish the same thing. Did you ever get things sorted?

[sinanakman]

Hi Daniel

Try  make u-boot.imx

Regards

Sinan Akman

[danielbujak]

When I build the u-boot.imx image this way I don't see anything output from the board when I try to boot. Is there some other configuration required?

[gusarambula]

Hello Daniel,

Do you mean you are not seeing any output from the board console? How did you load u-boot.imx to your board?

Regards,

[danielbujak]

Yes that's correct. I'm using the below command to flash the image to the SD card. This same method works for the image built by buildroot using the imx repositories.

sudo dd if=u-boot.imx of=/dev/sdb bs=1k seek=1

Is this the correct way to write the uboot image?

[danielbujak]

I had to set IMX_CONFIG=board/freescale/mx6ul_14x14_evk/imximage.cfg and now I'm getting some output. Is there any instruction on what is required to build u-boot from scratch? I'm not sure what else I may be missing at this point.

[fabio_estevam]

Daniel,

You are using U-Boot from mainline for the mx6ul_14x14_evk board.

In this case, u-boot.imx will not be generated as this board supports SPL, so you will get: SPL and u-boot.img.

In order to flash the SD card:

$ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync

(Note - the SD card node may vary, so adjust this as needed).

- Flash the u-boot.img image into the SD card:

sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync

[danielbujak]

Thanks for the suggestion Fabio. Using this method I get the following output before u-boot hangs:

U-Boot SPL 2017.05 (Jun 26 2017 - 10:58:21)
Trying to boot from MMC1

U-Boot 2017.05 (Jun 26 2017 - 10:58:21 -0400)

CPU:   Freescale i.MX6UL rev1.0 528 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 105C) at 34C
Reset cause: POR
Board: MX6UL 14x14 EVK
I2C:   ready
DRAM:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

Video: 480x272x24

[fabio_estevam]

Works fine for me:

U-Boot SPL 2017.05 (Jun 26 2017 - 12:11:18)
Trying to boot from MMC1


U-Boot 2017.05 (Jun 26 2017 - 12:11:18 -0300)

CPU: Freescale i.MX6UL rev1.0 at 396MHz
CPU: Commercial temperature grade (0C to 95C)Reset cause: WDOG
Board: MX6UL 14x14 EVK
I2C: ready
DRAM: 512 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
Video: MXSFB: 'videomode' variable not set!
In: serial
Out: serial
Err: serial
Net: FEC1
Hit any key to stop autoboot: 0
=>

Can you try to disable the video support?

diff --git a/configs/mx6ul_14x14_evk_defconfig b/configs/mx6ul_14x14_evk_defconfig
index 56e66ee..6f98d1e 100644
--- a/configs/mx6ul_14x14_evk_defconfig
+++ b/configs/mx6ul_14x14_evk_defconfig
@@ -8,7 +8,6 @@ CONFIG_SPL_MMC_SUPPORT=y
CONFIG_SPL_SERIAL_SUPPORT=y
CONFIG_SPL_LIBDISK_SUPPORT=y
CONFIG_SPL_WATCHDOG_SUPPORT=y
-CONFIG_VIDEO=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg"
CONFIG_BOOTDELAY=3
# CONFIG_CONSOLE_MUX is not set

[danielbujak]

Disabling video on 2017.05 seems to have fixed the issue. Interestingly if I build from master branch it works with video enabled.

Between using make menuconfig, editing configs/mx6ul_14x14_evk_defconfig, and editing include/configs/mx6ul_14x14_evk.h which is the correct place to make changes in which instances?

If I enable features using make menuconfig it complains that things are being re-defined.

[fabio_estevam]

If you run:

=> env default -f -a

=> saveenv

Then rebuild with video enabled with U-Boot 2017.05 version (without any change) and it should work.

Looks like the issue was that you have had an old environment stored in the SD card.

[danielbujak]

I'm still getting the same result (u-boot hangs at video) even after resetting the environment to default.

[fabio_estevam]

Are you able to reproduce this error with the latest U-Boot master?

[danielbujak]

No, with the latest master source I don't have this issue.

[gusarambula]

Hello Michael Perreca,

The u-boot source code per se does compiles to u-boot-bin. In order to get u-boot.imx the IVT header is added at the beginning.

The IVT and other headers are added after compiling by the mkimage tool which is located on the tools directory (at least on the NXP u-boot git). Look for the tools/imximage.c for more details.

I hope this information helps!

Regards,