[PATCH 1/2] MdeModulePkg/UefiBootManagerLib: Add Pcd to prioritize internal devices

["Sean Rhodes" <sean@starlabs.systems>]

From: Matt DeVillier <matt.devillier@gmail.com>

Add Pcd to allow configuring internal devices to be prioritized over
internally-attached USB devices, such as card readers, over SATA, NVMe
and eMMC drives.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
---
 MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c       | 10 ++++++++--
 .../Library/UefiBootManagerLib/UefiBootManagerLib.inf  |  1 +
 MdeModulePkg/MdeModulePkg.dec                          |  4 ++++
 MdeModulePkg/MdeModulePkg.uni                          |  4 ++++
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
index 962892d38f..28c3cff471 100644
--- a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
+++ b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
@@ -2214,8 +2214,14 @@ BmEnumerateBootOptions (
       //
       // Skip the fixed block io then the removable block io
       //
-      if (BlkIo->Media->RemovableMedia == ((Removable == 0) ? FALSE : TRUE)) {
-        continue;
+      if (FixedPcdGetBool (PcdPrioritizeInternal)) {
+        if (BlkIo->Media->RemovableMedia == (Removable == 0)) {
+          continue;
+        }
+      } else {
+        if (BlkIo->Media->RemovableMedia == ((Removable == 0) ? FALSE : TRUE)) {
+          continue;
+        }
       }
 
       Description = BmGetBootDescription (Handles[Index]);
diff --git a/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf b/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
index fe05d5f1cc..207420e334 100644
--- a/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
+++ b/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
@@ -119,3 +119,4 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile                     ## CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdDriverHealthConfigureForm               ## SOMETIMES_CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxRepairCount                          ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPrioritizeInternal
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 40601c9583..8b8b1f7033 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -1563,6 +1563,10 @@
   # @Prompt SD/MMC Host Controller Operations Timeout (us).
   gEfiMdeModulePkgTokenSpaceGuid.PcdSdMmcGenericTimeoutValue|1000000|UINT32|0x00000031
 
+  ## Inditicates if internal devices will be prioritized over external devices.
+  # @prompt Prioritize internal devices.
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPrioritizeInternal|FALSE|BOOLEAN|0x00000032
+
 [PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
   ## This PCD defines the Console output row. The default value is 25 according to UEFI spec.
   #  This PCD could be set to 0 then console output would be at max column and max row.
diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index b070f15ff2..7b8606f091 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -1177,6 +1177,10 @@
 
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdSdMmcGenericTimeoutValue_HELP   #language en-US "Indicates the default timeout value for SD/MMC Host Controller operations in microseconds."
 
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdPrioritizeInternal_PROMPT #language en-US "Enable booting from internal devices before external devices."
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdPrioritizeInternal_HELP   #language en-US "Indicates the if internal devices will be prioritized in boot order."
+
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdCodRelocationDevPath_PROMPT  #language en-US "Capsule On Disk relocation device path."
 
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdCodRelocationDevPath_HELP  #language en-US   "Full device path of platform specific device to store Capsule On Disk temp relocation file.<BR>"
-- 
2.32.0