acpiview - command
Display ACPI Table information.
Display ACPI Table information.
ACPIVIEW [[-?] | [[[[-l] | [-s AcpiTable [-d]]] [-q] [-h]] [-r Spec]]]
-l - Display list of installed ACPI Tables.
-s - Display only the specified AcpiTable type and only support single
invocation option.
AcpiTable : The required ACPI Table type.
-d - Generate a binary file dump of the specified AcpiTable.
-q - Quiet. Suppress errors and warnings. Disables consistency checks.
-h - Enable colour highlighting.
-r - Validate that all required ACPI tables are installed
Spec : Specification to validate against.
For Arm, the possible values are:
0 - Server Base Boot Requirements v1.0
1 - Server Base Boot Requirements v1.1
2 - Server Base Boot Requirements v1.2
-? - Show help.
This program is provided to allow examination of ACPI table values from the
UEFI Shell. This can help with investigations, especially at that stage
where the tables are not enabling an OS to boot.
The program is not exhaustive, and only encapsulates detailed knowledge of a
limited number of table types.
Default behaviour is to display the content of all tables installed.
'Known' table types (listed in NOTES below) will be parsed and displayed
with descriptions and field values. Where appropriate a degree of
consistency checking is done and errors may be reported in the output.
Other table types will be displayed as an array of Hexadecimal bytes.
To facilitate debugging, the -s and -d options can be used to generate a
binary file image of a table that can be copied elsewhere for investigation
using tools such as those provided by acpica.org. This is especially
relevant for AML type tables like DSDT and SSDT.
NOTES:
1. The AcpiTable parameter can match any installed table type.
Tables without specific handling will be displayed as a raw hex dump (or
dumped to a file if -d is used).
2. -s option supports to display the specified AcpiTable type that is present
in the system. For normal type AcpiTable, it would display the data of the
AcpiTable and AcpiTable header. The following type may contain header type
other than AcpiTable header. The actual header can refer to the ACPI spec
6.2
Extra A. Particular types:
AEST - Arm Error Source Table
APIC - Multiple APIC Description Table (MADT)
BGRT - Boot Graphics Resource Table
DBG2 - Debug Port Table 2
DSDT - Differentiated System Description Table
FACP - Fixed ACPI Description Table (FADT)
GTDT - Generic Timer Description Table
HMAT - Heterogeneous Memory Attributes Table
IORT - IO Remapping Table
MCFG - Memory Mapped Config Space Base Address Description Table
PPTT - Processor Properties Topology Table
RSDP - Root System Description Pointer
SLIT - System Locality Information Table
SPCR - Serial Port Console Redirection Table
SRAT - System Resource Affinity Table
SSDT - Secondary SystemDescription Table
XSDT - Extended System Description Table
EXAMPLES:
* To display a list of the installed table types:
fs0:\> acpiview -l
* To parse and display a specific table type:
fs0:\> acpiview -s GTDT
* To save a binary dump of the contents of a table to a file
in the current working directory:
fs0:\> acpiview -s DSDT -d
* To display contents of all ACPI tables:
fs0:\> acpiview
* To check if all Server Base Boot Requirements (SBBR) v1.2 mandatory
ACPI tables are installed (Arm only):
fs0:\> acpiview -r 2
See also: ARM adds ACPIView tool to UEFI Shell: dump ACPI tables – Firmware Security
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