eerom bypass on OSD3358-SM not working

[kakarla_sreenu]

Hi  ,
The Beagle images require the EEPROM programmed with a board ID in order for them to boot. See https://octavosystems.com/forums/topic/issues-booting-custom-board/#post-4608 for more information. You can also update your Beagle image with a new u-boot using the following procedure to bypass the EEPROM ID check:

– Create an SD card with the latest Beagle image or the image you want to use by following the procedure in https://beagleboard.org/getting-started

– In an Ubuntu machine or a VM that runs Ubuntu, download and compile u-boot:

1. Download the ARM cross-compiler GCC. Note the pwd in code line 3 needs a special character “” on both sides
– wget -c https://releases.linaro.org/components/toolchain/binaries/6.4-2017.11/arm-linux-gnueabihf/gcc-linaro-6.4.1-2017.11-x86_64_arm-linux-gnueabihf.tar.xz
– tar xf gcc-linaro-6.4.1-2017.11-x86_64_arm-linux-gnueabihf.tar.xz
– export CC=pwd/gcc-linaro-6.4.1-2017.11-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-

– git clone https://github.com/u-boot/u-boot

– cd u-boot/

– git checkout v2018.01 -b tmp

– wget -c https://rcn-ee.com/repos/git/u-boot-patches/v2018.01/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch

– wget -c https://rcn-ee.com/repos/git/u-boot-patches/v2018.01/0002-U-Boot-BeagleBone-Cape-Manager.patch

– wget -c https://raw.githubusercontent.com/RobertCNelson/Bootloader-Builder/master/patches/v2018.03-rc1/0002-NFM-Production-eeprom-assume-device-is-BeagleBone-Bl.patch

4. Apply patches to u-boot<br style=”box-sizing: border-box;” />– patch -p1 < 0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch

– patch -p1 < 0002-U-Boot-BeagleBone-Cape-Manager.patch

– patch -p1 < 0002-NFM-Production-eeprom-assume-device-is-BeagleBone-Bl.patch

– make ARCH=arm CROSS_COMPILE=${CC} distclean

– make ARCH=arm CROSS_COMPILE=${CC} am335x_evm_defconfig

– make ARCH=arm CROSS_COMPILE=${CC}

6. Attach the SD card to the computer and run ‘lsblk’ to find out the id of the SD card. In our case the id was ‘sdb’

7. Install bootloader:

– export DISK=/dev/sdb

– sudo dd if=./u-boot/MLO of=${DISK} count=1 seek=1 bs=128k

– sudo dd if=./u-boot/u-boot.img of=${DISK} count=2 seek=1 bs=384k

This installs a new version of u-boot that does not check the EEPROM. If you insert the SD card into the<br style=”box-sizing: border-box;” />board and power it up holding down boot button, you should be able to see the user LEDs light up.

Hope this helps.

My code is working  fine and after installation of Boot loader. Unable to get any logs on serial port.with out sd card i was getting CCCC on console.

Please provide some inputs.

Regards,
Sree

 

 

 

• This topic was modified 5 years, 11 months ago by Greg Sheridan.
• This topic was modified 5 years, 11 months ago by Greg Sheridan.

[Greg Sheridan]

I cleaned up the post to make it readable.

[Greg Sheridan]

Also your attachment didn’t come through.  Please zip it then upload it again.

[Author]

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