CONFIG_INTEL_IMR: Intel Isolated Memory Region support

General informations

The Linux kernel configuration item CONFIG_INTEL_IMR:

• prompt: Intel Isolated Memory Region support
• type: bool
• depends on: CONFIG_X86_INTEL_QUARK && CONFIG_IOSF_MBI
• defined in drivers/platform/x86/Kconfig
• found in Linux kernels: 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

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.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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