CONFIG_GOOGLE_CBMEM: CBMEM entries in sysfs

General informations

The Linux kernel configuration item CONFIG_GOOGLE_CBMEM:

• prompt: CBMEM entries in sysfs
• type: tristate
• depends on: CONFIG_GOOGLE_COREBOOT_TABLE
• defined in drivers/firmware/google/Kconfig
• found in Linux kernels: 6.2–6.8, 6.9-rc+HEAD
• modules built: cbmem

Help text

CBMEM is a downwards-growing memory region created by the Coreboot BIOS containing tagged data structures from the BIOS. These data structures expose things like the verified boot firmware variables, flash layout, firmware event log, and more.

This option enables the cbmem module, which causes the kernel to search for Coreboot CBMEM entries, and expose the memory for each entry in sysfs under /sys/bus/coreboot/devices/cbmem-<id>.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module cbmem CONFIG_GOOGLE_CBMEM : drivers/firmware/google/Kconfig : "CBMEM entries in sysfs" # in 6.2–6.8, 6.9-rc+HEAD

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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