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1What: /config/acpi2Date: July 20163KernelVersion: 4.84Contact: linux-acpi@vger.kernel.org5Description:6 This represents the ACPI subsystem entry point directory. It7 contains sub-groups corresponding to ACPI configurable options.8 9What: /config/acpi/table10Date: July 201611KernelVersion: 4.812Description:13 14 This group contains the configuration for user defined ACPI15 tables. The attributes of a user define table are:16 17 aml18 - a binary attribute that the user can use to19 fill in the ACPI aml definitions. Once the aml20 data is written to this file and the file is21 closed the table will be loaded and ACPI devices22 will be enumerated. To check if the operation is23 successful the user must check the error code24 for close(). If the operation is successful,25 subsequent writes to this attribute will fail.26 27 The rest of the attributes are read-only and are valid only28 after the table has been loaded by filling the aml entry:29 30 signature31 - ASCII table signature32 33 length34 - length of table in bytes, including the header35 36 revision37 - ACPI Specification minor version number38 39 oem_id40 - ASCII OEM identification41 42 oem_table_id43 - ASCII OEM table identification44 45 oem_revision46 - OEM revision number47 48 asl_compiler_id49 - ASCII ASL compiler vendor ID50 51 asl_compiler_revision52 - ASL compiler version53