xref: /aosp_15_r20/external/coreboot/util/nvramtool/README (revision b9411a12aaaa7e1e6a6fb7c5e057f44ee179a49c)
1Summary of Operation
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3nvramtool is a utility for reading/writing coreboot parameters and
4displaying information from the coreboot table.  It is intended for x86-based
5systems (both 32-bit and 64-bit) that use coreboot.
6
7The coreboot table resides in low physical memory, and may be accessed
8through the /dev/mem interface.  It is created at boot time by coreboot, and
9contains various system information such as the type of mainboard in use.  It
10specifies locations in the CMOS (nonvolatile RAM) where the coreboot
11parameters are stored.
12
13For information about coreboot, see https://www.coreboot.org/.
14
15Ideas for Future Improvements
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171.  Move the core functionality of this program into a shared library.
182.  Consider adding options for displaying other BIOS-provided information
19    such as the MP table, ACPI table, PCI IRQ routing table, etc.
20