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Commit 66360faa authored by Lv Zheng's avatar Lv Zheng Committed by Rafael J. Wysocki
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ACPICA: Tables: Allow FADT to be customized with virtual address 

ACPICA commit d98de9ca14891130efc5dcdc871b97eb27b4b0f5

FADT parsing code requires FADT to be installed as
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, using new
acpi_tb_get_table()/acpi_tb_put_table(), other address types can also be allowed,
thus facilitates FADT customization with virtual address. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/d98de9ca


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 174cc718

drivers/acpi/acpica/tbfadt.c

+7 −7
Original line number Diff line number Diff line
@@ -311,6 +311,8 @@ void acpi_tb_parse_fadt(void) 
{

	u32 length;

	struct acpi_table_header *table;

	struct acpi_table_desc *fadt_desc;

	acpi_status status;



	/*

	 * The FADT has multiple versions with different lengths,
@@ -319,14 +321,12 @@ void acpi_tb_parse_fadt(void) 
	 * Get a local copy of the FADT and convert it to a common format

	 * Map entire FADT, assumed to be smaller than one page.

	 */

	length = acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index].length;



	table =

	    acpi_os_map_memory(acpi_gbl_root_table_list.

			       tables[acpi_gbl_fadt_index].address, length);

	if (!table) {

	fadt_desc = &acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index];

	status = acpi_tb_get_table(fadt_desc, &table);

	if (ACPI_FAILURE(status)) {

		return;

	}

	length = fadt_desc->length;



	/*

	 * Validate the FADT checksum before we copy the table. Ignore
@@ -340,7 +340,7 @@ void acpi_tb_parse_fadt(void) 


	/* All done with the real FADT, unmap it */



	acpi_os_unmap_memory(table, length);

	acpi_tb_put_table(fadt_desc);



	/* Obtain the DSDT and FACS tables via their addresses within the FADT */