3 Copyright (C) 2016, Intel Corporation
4 Author: Lv Zheng <lv.zheng@intel.com>
7 This document describes the usage of the AML debugger embedded in the Linux
12 The following kernel configuration items are required to enable the AML
13 debugger interface from the Linux kernel:
15 CONFIG_ACPI_DEBUGGER=y
16 CONFIG_ACPI_DEBUGGER_USER=m
18 The userspace utlities can be built from the kernel source tree using
19 the following commands:
24 The resultant userspace tool binary is then located at:
26 tools/acpi/power/acpi/acpidbg/acpidbg
28 It can be installed to system directories by running "make install" (as a
29 sufficiently privileged user).
31 2. Start the userspace debugger interface
33 After booting the kernel with the debugger built-in, the debugger can be
34 started by using the following commands:
36 # mount -t debugfs none /sys/kernel/debug
38 # tools/acpi/power/acpi/acpidbg/acpidbg
40 That spawns the interactive AML debugger environment where you can execute
43 The commands are documented in the "ACPICA Overview and Programmer Reference"
44 that can be downloaded from
46 https://acpica.org/documentation
48 The detailed debugger commands reference is located in Chapter 12 "ACPICA
49 Debugger Reference". The "help" command can be used for a quick reference.
51 3. Stop the userspace debugger interface
53 The interactive debugger interface can be closed by pressing Ctrl+C or using
54 the "quit" or "exit" commands. When finished, unload the module with:
58 The module unloading may fail if there is an acpidbg instance running.
60 4. Run the debugger in a script
62 It may be useful to run the AML debugger in a test script. "acpidbg" supports
63 this in a special "batch" mode. For example, the following command outputs
64 the entire ACPI namespace:
66 # acpidbg -b "namespace"