[edk2-devel] [PATCH v3 1/1] Silicon/FitGen: Enhance Slot mode support force mode for multiple FV.

[Aaron Li]

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3122

Adding "-LF"/"-lf" option to support slot mode without FFS GUID check.
It will support the scenario that multiple Microcode FV with different FFS
GUID enable slot mode.
The size of slot should be 16 byte-aligned, and larger than every
microcode.

Signed-off-by: Aaron Li <aaron.li at intel.com>
Cc: Bob Feng <bob.c.feng at intel.com>
Cc: Liming Gao <gaoliming at byosoft.com.cn>
---
 Silicon/Intel/Tools/FitGen/FitGen.c | 39 +++++++++++++-------
 Silicon/Intel/Tools/FitGen/FitGen.h |  2 +-
 2 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c b/Silicon/Intel/Tools/FitGen/FitGen.c
index e9541c1e95cb..36e6e3c90518 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.c
+++ b/Silicon/Intel/Tools/FitGen/FitGen.c
@@ -333,9 +333,10 @@ Returns:
           "\t[-F <FitTablePointerOffset>] [-F <FitTablePointerOffset>] [-V <FitHeaderVersion>]\n"
           "\t[-NA]\n"
           "\t[-A <MicrocodeAlignment>]\n"
-           "\t[-REMAP <TopFlashAddress>\n"
+          "\t[-REMAP <TopFlashAddress>\n"
           "\t[-CLEAR]\n"
           "\t[-L <MicrocodeSlotSize> <MicrocodeFfsGuid>]\n"
+          "\t[-LF <MicrocodeSlotSize>]\n"
           "\t[-I <BiosInfoGuid>]\n"
           "\t[-S <StartupAcmAddress StartupAcmSize>|<StartupAcmGuid>] [-V <StartupAcmVersion>]\n"
           "\t[-U <DiagnstAcmAddress>|<DiagnstAcmGuid>]\n"
@@ -366,6 +367,7 @@ Returns:
   printf ("\tMicrocodeGuid          - Guid of Microcode Module.\n");
   printf ("\tMicrocodeSlotSize      - Occupied region size of each Microcode binary.\n");
   printf ("\tMicrocodeFfsGuid       - Guid of FFS which is used to save Microcode binary");
+  printf ("\t-LF                    - Microcode Slot mode without FFS check, treat all Microcode FV as slot mode. In this case the Microcode FV should only contain one FFS.\n");
   printf ("\t-NA                    - No 0x800 aligned Microcode requirement. No -NA means Microcode is aligned with option MicrocodeAlignment value.\n");
   printf ("\tMicrocodeAlignment     - HEX value of Microcode alignment. Ignored if \"-NA\" is specified. Default value is 0x800. The Microcode update data must start at a 16-byte aligned linear address.\n");
   printf ("\tRecordType             - FIT entry record type. User should ensure it is ordered.\n");
@@ -882,11 +884,13 @@ Returns:
   UINTN                       FitEntryNumber;
   BOOLEAN                     BiosInfoExist;
   BOOLEAN                     SlotMode;
+  BOOLEAN                     SlotModeForce;
   BIOS_INFO_HEADER            *BiosInfo;
   BIOS_INFO_STRUCT            *BiosInfoStruct;
   UINTN                       BiosInfoIndex;
 
-  SlotMode = FALSE;
+  SlotMode      = FALSE;
+  SlotModeForce = FALSE;
 
   //
   // Init index
@@ -1031,7 +1035,9 @@ Returns:
   //
   if ((Index + 1 >= argc) ||
       ((strcmp (argv[Index], "-L") != 0) &&
-       (strcmp (argv[Index], "-l") != 0)) ) {
+       (strcmp (argv[Index], "-l") != 0) &&
+       (strcmp (argv[Index], "-LF") != 0) &&
+       (strcmp (argv[Index], "-lf") != 0))) {
     //
     // Bypass
     //
@@ -1039,18 +1045,21 @@ Returns:
   } else {
     SlotSize = xtoi (argv[Index + 1]);
 
-    if (SlotSize == 0) {
-      printf ("Invalid slotsize = %d\n", SlotSize);
+    if (SlotSize == 0 || SlotSize & 0xF) {
+      printf ("Invalid slotsize = 0x%x, slot size should not be zero, or start at a non-16-byte aligned linear address!\n", SlotSize);
       return 0;
     }
-
-    SlotMode = IsGuidData(argv[Index + 2], &MicrocodeFfsGuid);
-    if (!SlotMode) {
-      printf ("Need a ffs GUID for search uCode ffs\n");
-      return 0;
+    if (strcmp (argv[Index], "-LF") == 0 || strcmp (argv[Index], "-lf") == 0) {
+      SlotModeForce = TRUE;
+      Index += 2;
+    } else {
+      SlotMode = IsGuidData(argv[Index + 2], &MicrocodeFfsGuid);
+      if (!SlotMode) {
+        printf ("Need a ffs GUID for search uCode ffs\n");
+        return 0;
+      }
+      Index += 3;
     }
-
-    Index += 3;
   }
 
   //
@@ -1219,6 +1228,10 @@ Returns:
               gFitTableContext.FitEntryNumber++;
 
               if (SlotSize != 0) {
+                if (SlotSize < MicrocodeSize) {
+                  printf ("Parameter incorrect, Slot size: %x is too small for Microcode size: %x!\n", SlotSize, MicrocodeSize);
+                  return 0;
+                }
                 MicrocodeBuffer += SlotSize;
               } else {
                 MicrocodeBuffer += MicrocodeSize;
@@ -1228,7 +1241,7 @@ Returns:
             ///
             /// Check the remaining buffer
             ///
-            if (((UINT32)(MicrocodeBuffer - MicrocodeFileBuffer) < MicrocodeFileSize) && SlotMode != 0) {
+            if (((UINT32)(MicrocodeBuffer - MicrocodeFileBuffer) < MicrocodeFileSize) && (SlotMode || SlotModeForce)) {
               for (Walker = MicrocodeBuffer; Walker < MicrocodeFileBuffer + MicrocodeFileSize; Walker++) {
                 if (*Walker != 0xFF) {
                   printf ("Error: detect non-spare space after uCode array, please check uCode array!\n");
diff --git a/Silicon/Intel/Tools/FitGen/FitGen.h b/Silicon/Intel/Tools/FitGen/FitGen.h
index 435fc26209da..5add6a8870e9 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.h
+++ b/Silicon/Intel/Tools/FitGen/FitGen.h
@@ -31,7 +31,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 // Utility version information
 //
 #define UTILITY_MAJOR_VERSION 0
-#define UTILITY_MINOR_VERSION 63
+#define UTILITY_MINOR_VERSION 64
 #define UTILITY_DATE          __DATE__
 
 //
-- 
2.29.2.windows.2



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