June 2017
Intermediate to advanced
478 pages
13h 14m
English
Content preview from Mastering Embedded Linux Programming - Second Edition
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Booting with UEFI firmware
Most embedded x86/x86_64 designs, and some ARM designs, have firmware based on the Universal Extensible Firmware Interface (UEFI) standard. You can take a look at the UEFI website at http://www.uefi.org/ for more information. The boot sequence is fundamentally the same as that described in the preceding section:
- Phase 1: The processor loads the platform initialization firmware from flash memory. In some designs, it is loaded directly from NOR flash memory, while in others, there is ROM code on-chip which loads the firmware from SPI flash memory into some on-chip static RAM.
- Phase 2: The platform initialization firmware performs the role of SPL. It initializes the DRAM controller and other system interfaces, so ...
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