1. Turn off the I (interrupt) and F (fast interrupt) bits in the cpsr register;
2. Set the interrupt mask register.
For 2440:
This is the interrupt processing process. When there is an interrupt source (without a sub-interrupt source), it will record the interrupt in SRCPND; it also needs to pass through the MASK mask register. If we mask the corresponding bit, it will not be able to enter the IRQ for processing. The same is true for sub-interrupt sources.
Its code:
For 6410:
Open the S3C6410X file and go to the Vectored Interrupt Controller section.
6410 and 210 use vector interrupts.
Which register should be used to mask a register in 6410? In 6410, the interrupt sources are divided into two groups, group 0, VIC0 and group 1, VIC1;
Write all 1s into these two registers.
6410 Code:
210 is very similar to 6410!!
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