ACPICA: Implement simplified Table Manager

The Table Manager component has been completely
redesigned and reimplemented. The new design is much
simpler, and reduces the overall code and data size of
the kernel-resident ACPICA by approximately 5%. Also,
it is now possible to obtain the ACPI tables very early
during kernel initialization, even before dynamic memory
management is initialized.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 2 insertions, 65 deletions

diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 103845213e22..8809306ba94c 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -46,8 +46,9 @@
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
 
+ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
 #define _COMPONENT          ACPI_UTILITIES
-ACPI_MODULE_NAME("utglobal")
+    ACPI_MODULE_NAME("utglobal")
 
 /*******************************************************************************
  *
@@ -280,53 +281,6 @@ char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
 }
 
-/*******************************************************************************
- *
- * Table name globals
- *
- * NOTE: This table includes ONLY the ACPI tables that the subsystem consumes.
- * it is NOT an exhaustive list of all possible ACPI tables.  All ACPI tables
- * that are not used by the subsystem are simply ignored.
- *
- * Do NOT add any table to this list that is not consumed directly by this
- * subsystem (No MADT, ECDT, SBST, etc.)
- *
- ******************************************************************************/
-
-struct acpi_table_list acpi_gbl_table_lists[ACPI_TABLE_ID_MAX + 1];
-
-struct acpi_table_support acpi_gbl_table_data[ACPI_TABLE_ID_MAX + 1] = {
-        /***********    Name,   Signature, Global typed pointer     Signature size,      Type                  How many allowed?,    Contains valid AML? */
-
-        /* RSDP 0 */ {RSDP_NAME, RSDP_SIG, NULL, sizeof(RSDP_SIG) - 1,
-                      ACPI_TABLE_ROOT | ACPI_TABLE_SINGLE}
-        ,
-        /* DSDT 1 */ {DSDT_SIG, DSDT_SIG, (void *)&acpi_gbl_DSDT,
-                      sizeof(DSDT_SIG) - 1,
-                      ACPI_TABLE_SECONDARY | ACPI_TABLE_SINGLE |
-                      ACPI_TABLE_EXECUTABLE}
-        ,
-        /* FADT 2 */ {FADT_SIG, FADT_SIG, (void *)&acpi_gbl_FADT,
-                      sizeof(FADT_SIG) - 1,
-                      ACPI_TABLE_PRIMARY | ACPI_TABLE_SINGLE}
-        ,
-        /* FACS 3 */ {FACS_SIG, FACS_SIG, (void *)&acpi_gbl_FACS,
-                      sizeof(FACS_SIG) - 1,
-                      ACPI_TABLE_SECONDARY | ACPI_TABLE_SINGLE}
-        ,
-        /* PSDT 4 */ {PSDT_SIG, PSDT_SIG, NULL, sizeof(PSDT_SIG) - 1,
-                      ACPI_TABLE_PRIMARY | ACPI_TABLE_MULTIPLE |
-                      ACPI_TABLE_EXECUTABLE}
-        ,
-        /* SSDT 5 */ {SSDT_SIG, SSDT_SIG, NULL, sizeof(SSDT_SIG) - 1,
-                      ACPI_TABLE_PRIMARY | ACPI_TABLE_MULTIPLE |
-                      ACPI_TABLE_EXECUTABLE}
-        ,
-        /* XSDT 6 */ {XSDT_SIG, XSDT_SIG, NULL, sizeof(RSDT_SIG) - 1,
-                      ACPI_TABLE_ROOT | ACPI_TABLE_SINGLE}
-        ,
-};
-
 /******************************************************************************
  *
  * Event and Hardware globals
@@ -751,13 +705,6 @@ void acpi_ut_init_globals(void)
                 return;
         }
 
-        /* ACPI table structure */
-
-        for (i = 0; i < (ACPI_TABLE_ID_MAX + 1); i++) {
-                acpi_gbl_table_lists[i].next = NULL;
-                acpi_gbl_table_lists[i].count = 0;
-        }
-
         /* Mutex locked flags */
 
         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
@@ -784,14 +731,6 @@ void acpi_ut_init_globals(void)
         acpi_gbl_exception_handler = NULL;
         acpi_gbl_init_handler = NULL;
 
-        /* Global "typed" ACPI table pointers */
-
-        acpi_gbl_RSDP = NULL;
-        acpi_gbl_XSDT = NULL;
-        acpi_gbl_FACS = NULL;
-        acpi_gbl_FADT = NULL;
-        acpi_gbl_DSDT = NULL;
-
         /* Global Lock support */
 
         acpi_gbl_global_lock_semaphore = NULL;
@@ -801,8 +740,6 @@ void acpi_ut_init_globals(void)
 
         /* Miscellaneous variables */
 
-        acpi_gbl_table_flags = ACPI_PHYSICAL_POINTER;
-        acpi_gbl_rsdp_original_location = 0;
         acpi_gbl_cm_single_step = FALSE;
         acpi_gbl_db_terminate_threads = FALSE;
         acpi_gbl_shutdown = FALSE;