Defining device drivers Discussing the difference between architecture-specific and board-specific drivers Providing several examples of different types of device drivers Most embedded hardware ...
In a System-on Chip(SoC),a general interrupt process works as follows: Interrupt is triggered by a certain system event or interrupt source. Interrupt is detected by system’s peripheral module, which ...
// a scratch area per CPU for machine-mode timer interrupts. reg_t timer_scratch[NCPU][5]; #define interval 20000000 // cycles; about 2 second in qemu. void timer ...
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