rafaelSorel Posted January 21, 2018 Author Posted January 21, 2018 On 1/21/2018 at 7:59 AM, balbes150 said: 4. If your new u-boot will normally be run from SD card, you can try to burn it to eMMC. Expand What is the recommended way to flash the emmc uboot ? is it like so: dd if=u-boot.bin of=/dev/bootloader Thanks,
balbes150 Posted January 22, 2018 Posted January 22, 2018 On 1/21/2018 at 6:56 PM, rafaelSorel said: What is the recommended way to flash the emmc uboot ? is it like so: Expand The installation of u-boot that depends on how it's done in u-boot (source code). For example, for models Khadas VIM u-boot has a special team (sdc_update bootloader u-boot.bin), which I will install u-boot in eMMC\SPI. I don't know which team has your u-boot.
rafaelSorel Posted January 22, 2018 Author Posted January 22, 2018 Is there a way to check the team of the u-boot installed ?
balbes150 Posted January 22, 2018 Posted January 22, 2018 On 1/22/2018 at 7:55 AM, rafaelSorel said: Is there a way to check the team of the u-boot installed ? Expand To study the output of the command "help" and explore the options of the received command with the "-help". Either contact the manufacturer requesting information.
rafaelSorel Posted January 22, 2018 Author Posted January 22, 2018 Ok I will check the help command. And make some search and get back if found something weird. Thanks,
rafaelSorel Posted February 8, 2018 Author Posted February 8, 2018 @balbes150: I have checked the u-boot help command line and I could see the sdc_update command. So basically it is possible to update the bootloader from u-boot command line. My question is : What is the best way to flash a new u-boot on emmc (sdc_update from u-boot console or running dd if=u-boot.bin of=/dev/bootloader from running linux on SD card) ? The second thing is since I want to update the boot screen logo, I managed to extract the bootup.bmp from logo.img partition using this script https://github.com/steeve/aml-imgpack then I have repacked a new logo.img with the changed bootup.img file using the same script. so is it possible to update the logo.img using this command: "dd if=logo.img of=/dev/logo bs=32M" ? Thanks,
rafaelSorel Posted February 8, 2018 Author Posted February 8, 2018 On 2/8/2018 at 3:29 PM, rafaelSorel said: The second thing is since I want to update the boot screen logo, I managed to extract the bootup.bmp from logo.img partition using this script https://github.com/steeve/aml-imgpack then I have repacked a new logo.img with the changed bootup.img file using the same script. so is it possible to update the logo.img using this command: "dd if=logo.img of=/dev/logo bs=32M" ? Expand [Update] I manage to change the bootup logo successfully, basically we need to unpack the logo.img and change the bootup.bmp with the wanted one, the format needs to be (16bit RGB565 BMP)
balbes150 Posted February 9, 2018 Posted February 9, 2018 On 2/8/2018 at 3:29 PM, rafaelSorel said: What is the best way to flash a new u-boot on emmc (sdc_update from u-boot console or running dd if=u-boot.bin of=/dev/bootloader from running linux on SD card) ? Expand It is better to use staff team sdc_update. It is better to know the features of the installation of the new u-boot (data entry, calculation of checksums, etc.).
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