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CONFIG_INTEL_IMR: Intel Isolated Memory Region support

General informations

The Linux kernel configuration item CONFIG_INTEL_IMR:

Help text

This option provides a means to manipulate Isolated Memory Regions. IMRs are a set of registers that define read and write access masks to prohibit certain system agents from accessing memory with 1 KiB granularity.

IMRs make it possible to control read/write access to an address by hardware agents inside the SoC. Read and write masks can be defined for: - eSRAM flush - Dirty CPU snoop (write only) - RMU access - PCI Virtual Channel 0/Virtual Channel 1 - SMM mode - Non SMM mode

Quark contains a set of eight IMR registers and makes use of those registers during its bootup process.

If you are running on a Galileo/Quark say Y here.



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