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ACPICA: Add override for dynamic tables

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Add a call to acpi_os_table_override during the installation of a
dynamic table (loaded via the Load or LoadTable AML operators).

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2009-02-03 14:43:04 +08:00 committed by Len Brown
parent 97cbb7d196
commit d3ccaff827
1 changed files with 27 additions and 1 deletions
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28
drivers/acpi/acpica/tbinstal.c
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@ -103,7 +103,9 @@ acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc)
* *
* RETURN: Status * RETURN: Status
* *
* DESCRIPTION: This function is called to add the ACPI table * DESCRIPTION: This function is called to add an ACPI table. It is used to
* dynamically load tables via the Load and load_table AML
* operators.
* *
******************************************************************************/ ******************************************************************************/
@ -112,6 +114,7 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
{ {
u32 i; u32 i;
acpi_status status = AE_OK; acpi_status status = AE_OK;
struct acpi_table_header *override_table = NULL;
ACPI_FUNCTION_TRACE(tb_add_table); ACPI_FUNCTION_TRACE(tb_add_table);
@ -201,6 +204,29 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
} }
} }
/*
* ACPI Table Override:
* Allow the host to override dynamically loaded tables.
*/
status = acpi_os_table_override(table_desc->pointer, &override_table);
if (ACPI_SUCCESS(status) && override_table) {
ACPI_INFO((AE_INFO,
"%4.4s @ 0x%p Table override, replaced with:",
table_desc->pointer->signature,
ACPI_CAST_PTR(void, table_desc->address)));
/* We can delete the table that was passed as a parameter */
acpi_tb_delete_table(table_desc);
/* Setup descriptor for the new table */
table_desc->address = ACPI_PTR_TO_PHYSADDR(override_table);
table_desc->pointer = override_table;
table_desc->length = override_table->length;
table_desc->flags = ACPI_TABLE_ORIGIN_OVERRIDE;
}
/* Add the table to the global root table list */ /* Add the table to the global root table list */
status = acpi_tb_store_table(table_desc->address, table_desc->pointer, status = acpi_tb_store_table(table_desc->address, table_desc->pointer,