June 2017
Intermediate to advanced
478 pages
13h 14m
English
Content preview from Mastering Embedded Linux Programming - Second Edition
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Installing U-Boot
Installing a bootloader on a board for the first time requires some outside assistance. If the board has a hardware debug interface, such as JTAG, it is usually possible to load a copy of U-Boot directly into RAM and set it running. From that point, you can use U-Boot commands to copy itself into flash memory. The details of this are very board-specific and outside the scope of this book.
Many SoC designs have a boot ROM built in, which can be used to read boot code from various external sources, such as SD cards, serial interfaces, or USB mass storage. This is the case with the am335x chip in the BeagleBone Black, which makes it easy to try out new software.
You will need an SD card reader to write the images to a card. ...
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