AM4378: U-boot Splash Screen

Tanner Hunsucker73

Part Number: AM4378

I am trying to get the U-boot Splash Screen working with SDK version 06.03.00.106 and I am following the directions listed here. I am getting an error when I try to build U-boot:

board/ti/UTI-board/board.c: In function ‘splash_screen’:
board/ti/UTI-board/board.c:591:39: error: ‘struct mmc’ has no member named ‘block_dev’
err = fat_register_device(&mmc->block_dev,

In the mmc.h file, the block_dev variable delaration in the mmc structure is not defined because it is only defined if CONFIG_BLK is not defined. How am I supposed to access the block_dev variable if CONFIG_BLK is defined?

over 3 years ago

0 Krunal Bhargav34 over 3 years ago

TI__Mastermind 32855 points

Hello,

The document you are referring to was only tested with Processor Linux SDK 03.02.00.05 and we have not tested it with following releases. Currently, we do not support Splash screen in Uboot or Linux.

Regards,

Krunal

0 Tanner Hunsucker73 over 3 years ago in reply to Krunal Bhargav34

Expert 2190 points

Why is that document still in the guide for the current SDK version then? Do you have any resources you can point me to to help implement the splash screen?

0 James Pawlyk over 3 years ago

Expert 1055 points

did you solve this? I think something like:

err = fat_register_device(mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);

might do the trick. there are a few minor changes from the description you are using.

0 Tanner Hunsucker73 over 3 years ago in reply to James Pawlyk

Expert 2190 points

James,

Thank you for that suggestion. Making that change fixed my compilation issue, but I'm still have trouble getting the splash screen to come up. It looks like uboot is getting through the lcd_ctrl_init() function, but then it hangs and nothing else happens, the splash_screen() function never gets called. Any idea what could be going on?

0 Tanner Hunsucker73 over 3 years ago in reply to Tanner Hunsucker73

Expert 2190 points

Okay, I just realized that the call to lcd_set_flush_dcache() was commented out, when I commented that out I did not see the hang anymore. Now a blank white screen is being displayed, but still not the logo that I am trying to display. I have the .bmp.gz image stored on the SD card in the "/" directory, but apparently that image isn't being found. Do I need to put it in a different location?

0 James Pawlyk over 3 years ago in reply to Tanner Hunsucker73

Expert 1055 points

It's been a few months since I did this, I think the image goes in the same partition as u-boot.img

0 Tanner Hunsucker73 over 3 years ago in reply to James Pawlyk

Expert 2190 points

I moved the image to that partition and it seems like the image is being found now as I am no longer getting an error, but I'm still only seeing a blank white screen. Do you think this means something isn't configured correctly?

0 James Pawlyk over 3 years ago in reply to Tanner Hunsucker73

Expert 1055 points

It's funny this was working for me, but I haven't tested it in awhile. I am seeing the same thing as you. I will let you know if I figure out what broke.

0 Tanner Hunsucker73 over 3 years ago in reply to James Pawlyk

Expert 2190 points

Okay sounds good, thank you

0 Tanner Hunsucker73 over 2 years ago in reply to Tanner Hunsucker73

Expert 2190 points

Hey James, just checking in to see if you've had any luck with this

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AM4378: U-boot Splash Screen