From bcdec27f562b0df37546b5e8ad2eab76348062eb Mon Sep 17 00:00:00 2001
From: Al Stone <ahs3@redhat.com>
Date: Sat, 19 Sep 2020 15:44:06 -0600
Subject: [PATCH 13/45] Support DRTM in a big-endian world

Signed-off-by: Al Stone <ahs3@redhat.com>
---
 source/common/dmtbdump1.c  | 25 +++++++++++++++----------
 source/compiler/dttable1.c |  6 ++++--
 2 files changed, 19 insertions(+), 12 deletions(-)

Index: acpica-unix2-20211217/source/common/dmtbdump1.c
===================================================================
--- acpica-unix2-20211217.orig/source/common/dmtbdump1.c
+++ acpica-unix2-20211217/source/common/dmtbdump1.c
@@ -987,11 +987,14 @@ AcpiDmDumpDrtm (
     ACPI_DRTM_RESOURCE_LIST *DrtmRl;
     ACPI_DRTM_DPS_ID        *DrtmDps;
     UINT32                  Count;
+    UINT32                  ResourceCount;
+    UINT32                  ValidatedTableCount;
+    UINT32                  TableLength = AcpiUtReadUint32 (&Table->Length);
 
 
     /* Main table */
 
-    Status = AcpiDmDumpTable (Table->Length, 0, Table, 0,
+    Status = AcpiDmDumpTable (TableLength, 0, Table, 0,
         AcpiDmTableInfoDrtm);
     if (ACPI_FAILURE (Status))
     {
@@ -1006,7 +1009,7 @@ AcpiDmDumpDrtm (
 
     DrtmVtl = ACPI_ADD_PTR (ACPI_DRTM_VTABLE_LIST, Table, Offset);
     AcpiOsPrintf ("\n");
-    Status = AcpiDmDumpTable (Table->Length, Offset,
+    Status = AcpiDmDumpTable (TableLength, Offset,
         DrtmVtl, ACPI_OFFSET (ACPI_DRTM_VTABLE_LIST, ValidatedTables),
         AcpiDmTableInfoDrtm0);
     if (ACPI_FAILURE (Status))
@@ -1019,10 +1022,11 @@ AcpiDmDumpDrtm (
     /* Dump Validated table addresses */
 
     Count = 0;
-    while ((Offset < Table->Length) &&
-            (DrtmVtl->ValidatedTableCount > Count))
+    ValidatedTableCount = AcpiUtReadUint32 (&DrtmVtl->ValidatedTableCount);
+    while ((Offset < TableLength) &&
+            (ValidatedTableCount > Count))
     {
-        Status = AcpiDmDumpTable (Table->Length, Offset,
+        Status = AcpiDmDumpTable (TableLength, Offset,
             ACPI_ADD_PTR (void, Table, Offset), sizeof (UINT64),
             AcpiDmTableInfoDrtm0a);
         if (ACPI_FAILURE (Status))
@@ -1038,7 +1042,7 @@ AcpiDmDumpDrtm (
 
     DrtmRl = ACPI_ADD_PTR (ACPI_DRTM_RESOURCE_LIST, Table, Offset);
     AcpiOsPrintf ("\n");
-    Status = AcpiDmDumpTable (Table->Length, Offset,
+    Status = AcpiDmDumpTable (TableLength, Offset,
         DrtmRl, ACPI_OFFSET (ACPI_DRTM_RESOURCE_LIST, Resources),
         AcpiDmTableInfoDrtm1);
     if (ACPI_FAILURE (Status))
@@ -1051,10 +1055,11 @@ AcpiDmDumpDrtm (
     /* Dump the Resource List */
 
     Count = 0;
-    while ((Offset < Table->Length) &&
-           (DrtmRl->ResourceCount > Count))
+    ResourceCount = AcpiUtReadUint32 (&DrtmRl->ResourceCount);
+    while ((Offset < TableLength) &&
+           (ResourceCount > Count))
     {
-        Status = AcpiDmDumpTable (Table->Length, Offset,
+        Status = AcpiDmDumpTable (TableLength, Offset,
             ACPI_ADD_PTR (void, Table, Offset),
             sizeof (ACPI_DRTM_RESOURCE), AcpiDmTableInfoDrtm1a);
         if (ACPI_FAILURE (Status))
@@ -1070,7 +1075,7 @@ AcpiDmDumpDrtm (
 
     DrtmDps = ACPI_ADD_PTR (ACPI_DRTM_DPS_ID, Table, Offset);
     AcpiOsPrintf ("\n");
-    (void) AcpiDmDumpTable (Table->Length, Offset,
+    (void) AcpiDmDumpTable (TableLength, Offset,
         DrtmDps, sizeof (ACPI_DRTM_DPS_ID), AcpiDmTableInfoDrtm2);
 }
 
Index: acpica-unix2-20211217/source/compiler/dttable1.c
===================================================================
--- acpica-unix2-20211217.orig/source/compiler/dttable1.c
+++ acpica-unix2-20211217/source/compiler/dttable1.c
@@ -1066,7 +1066,8 @@ DtCompileDrtm (
         Count++;
     }
 
-    DrtmVtl->ValidatedTableCount = Count;
+    AcpiUtWriteUint (&DrtmVtl->ValidatedTableCount, sizeof (UINT32),
+            &Count, sizeof (UINT32));
     DtPopSubtable ();
     ParentTable = DtPeekSubtable ();
 
@@ -1104,7 +1105,8 @@ DtCompileDrtm (
         Count++;
     }
 
-    DrtmRl->ResourceCount = Count;
+    AcpiUtWriteUint(&DrtmRl->ResourceCount, sizeof(UINT32),
+            &Count, sizeof(UINT32));
     DtPopSubtable ();
     ParentTable = DtPeekSubtable ();