Bare metal boot of Octavo Red
- This topic has 2 replies, 2 voices, and was last updated 6 years, 9 months ago by
.
Hello Steve,
We found few interesting links that talk about loading and running bare metal applications using U-Boot:
Guides:
https://www.cs.sfu.ca/CourseCentral/433/bfraser/other/BareMetalGuide.pdf
https://www.twosixlabs.com/running-a-baremetal-beaglebone-black-part-2/Forum Posts:
https://e2e.ti.com/support/embedded/starterware/f/790/t/431403
https://groups.google.com/forum/#!topic/beagleboard/eEZVrthmb8w
(4th post from the bottom)Code:
https://github.com/allexoll/BBB-BareMetalWe will validate these links for the RED board and get back to you beginning of next week.
TI provides a guide on how to boot a bare metal application using the StarterWare boot loader (http://processors.wiki.ti.com/index.php/AM335X_StarterWare_Booting_And_Flashing). However, you can also run Bare Metal applications directly from on board eMMC or SD card of the RED board using U-Boot. To do so:
1. Locate the “.bin” file that was created as part of the build process for the bare metal application in CCS.
2. Boot the OSD3358-SM-RED board. You can either boot directly from the eMMC or you can create an SD Card with the latest image (https://octavosystems.com/files/osd3358-sm-red-linux-image/) and boot from that.
3. Load the “.bin” file of the application on to the eMMC/SD card of the OSD3358-SM-RED. You can use Cloud 9 or an FTP client like WinSCP or similar to transfer the file to the board. Note the location of the file.
4. Connect to the UART0 debug header of the OSD3358-SM-RED board (Jumper J3) using a USB to UART adapter and use a terminal program, like Putty, to communicate with the OSD3358-SM-RED. This will allow you to see the initial boot messages that are put on UART0.
5. Reboot the OSD3358-SM-RED board.
6. As soon as it reboots, you will start seeing U-Boot boot messages on the serial interface. Press “Space bar” to enter U-Boot command line interface.
7.
To load a program from on board eMMC:
>> load mmc 1:1 0x80000000 <path to your app’s .bin file>
>> go 0x80000000
For example,
>> load mmc 1:1 0x80000000 /home/debian/demoApp.bin
>> go 0x80000000
To load a program from SD Card:
>> load mmc 0:1 0x80000000 <path to your app’s .bin file>
>> go 0x80000000
8. This will start your application. If you want to automate this process on boot then you can update the u-boot environment settings to autoboot your application.
You can try this out with the demo applications provided by StarterWare. However, there are a couple of caveats:
1. Currently, the u-boot device tree on the OSD3358-SM-RED does not support Ethernet networking. We will be releasing an updated to fix that in the near future.
2. Depending on the u-boot configuration, the Watch Dog Timer may be enabled. You can make sure you understand the state of the Watch Dog Timer and set it appropriately for your application.
- You must be logged in to reply to this topic.