Managing flash storage with Linux
Note: this article was first written for the German edition of Linux Magazine, and was later posted in the English edition too. We negotiated the right to publish it on our blog after the print editions. Here is the original version (the paper versions were modified by the editors to make them more concise). In the family tree of computers, personal computers (PCs) are the parents, while the child
FIQ Handlers in the ARM Linux Kernel
Part of the work on the CFA-10036 and its breakout boards was to write a driver that was using the FIQ mechanism provided by the ARM architecture to bitbang GPIOs on the first GPIO bank of the iMX28 port controller. Abstract FIQ stands for Fast Interrupt reQuest, and it is basically a higher priority interrupt. This means that it will always have precedence over regular interrupts, but also that r
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