ACPIDUMP(8) | System Manager's Manual | ACPIDUMP(8)

# NAME

`acpidump` — dump ACPI tables

# SYNOPSIS

`acpidump` | `-o` prefix

# DESCRIPTION

The `acpidump` command stores ACPI tables from physical memory into files specified by prefix. If prefix specifies a directory, the generated files will be of the form <prefix>/<sig>.<id>. Otherwise, they will be named <prefix>.<sig>.<id>. “sig” is the signature of the ACPI Table; “id” is unique for each table.

Additionally a file called <prefix>/headers or <prefix>.headers will be created that contains additional human readable information pertaining to this specific dump.

The ACPICA disassembler is available through the OpenBSD ports tree or package system:

    # pkg_add acpica
    $ iasl -d <prefix>.<sig>.<id>

`acpidump` requires the ability to open /dev/kmem, which may be restricted based upon the value of the kern.allowkmem sysctl(8).

`acpidump` is run at startup and stores the results in /var/db/acpi.

# FILES

/dev/mem
/var/db/acpi

# SEE ALSO

pkg_add(1), mem(4), packages(7), ports(7)

# HISTORY

The `acpidump` command first appeared in OpenBSD 3.8.

November 22, 2020 | Debian