Commit fe536995 authored by Bob Moore's avatar Bob Moore Committed by Rafael J. Wysocki
Browse files

ACPICA: Namespace: Add support of OSDT table 

ACPICA commit 27415c82fcecf467446f66d1007a0691cc5f3709

This patch adds OSDT (Override System Definition Table) support.
When OSDT is loaded, conflict namespace objects will be overridden
by the AML interpreter. Bob Moore, Lv Zheng.

Link: https://github.com/acpica/acpica/commit/27415c82


Signed-off-by: default avatarLv Zheng <lv.zheng@intel.com>
Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 8f6f0361

drivers/acpi/acpica/nsparse.c

+7 −0
Original line number Diff line number Diff line
@@ -117,6 +117,13 @@ acpi_ns_one_complete_parse(u32 pass_number, 
					       (u8) pass_number);

	}



	/* Found OSDT table, enable the namespace override feature */



	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&

	    pass_number == ACPI_IMODE_LOAD_PASS1) {

		walk_state->namespace_override = TRUE;

	}



	if (ACPI_FAILURE(status)) {

		acpi_ds_delete_walk_state(walk_state);

		goto cleanup;

drivers/acpi/acpica/tbxfload.c

+5 −1
Original line number Diff line number Diff line
@@ -173,7 +173,11 @@ static acpi_status acpi_tb_load_namespace(void) 
		     &&

		     !ACPI_COMPARE_NAME(&

					(acpi_gbl_root_table_list.tables[i].

					 signature), ACPI_SIG_PSDT))

					 signature), ACPI_SIG_PSDT)

		     &&

		     !ACPI_COMPARE_NAME(&

					(acpi_gbl_root_table_list.tables[i].

					 signature), ACPI_SIG_OSDT))

		    ||

		    ACPI_FAILURE(acpi_tb_validate_table

				 (&acpi_gbl_root_table_list.tables[i]))) {

drivers/acpi/acpica/utmisc.c

+2 −1
Original line number Diff line number Diff line
@@ -97,7 +97,8 @@ u8 acpi_ut_is_aml_table(struct acpi_table_header *table) 


	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) ||

	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) ||

	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) {

	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT) ||

	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT)) {

		return (TRUE);

	}

include/acpi/actbl.h

+1 −0
Original line number Diff line number Diff line
@@ -65,6 +65,7 @@ 
#define ACPI_SIG_DSDT           "DSDT"	/* Differentiated System Description Table */

#define ACPI_SIG_FADT           "FACP"	/* Fixed ACPI Description Table */

#define ACPI_SIG_FACS           "FACS"	/* Firmware ACPI Control Structure */

#define ACPI_SIG_OSDT           "OSDT"	/* Override System Description Table */

#define ACPI_SIG_PSDT           "PSDT"	/* Persistent System Description Table */

#define ACPI_SIG_RSDP           "RSD PTR "	/* Root System Description Pointer */

#define ACPI_SIG_RSDT           "RSDT"	/* Root System Description Table */

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