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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: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore 2015-07-01 14:44:23 +08:00 committed by Rafael J. Wysocki
parent 8f6f036104
commit fe536995f2
4 changed files with 15 additions and 2 deletions
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7
drivers/acpi/acpica/nsparse.c
View File

@ -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;

6
drivers/acpi/acpica/tbxfload.c
View File

@ -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]))) {

3
drivers/acpi/acpica/utmisc.c
View File

@ -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);
}

1
include/acpi/actbl.h
View File

@ -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 */