diff mbox

[edk2,v2,02/29] ArmPkg: allow patchable PCDs for memory, FD and FV addresses

Message ID 1422299011-2409-3-git-send-email-ard.biesheuvel@linaro.org
State New
Headers show

Commit Message

Ard Biesheuvel Jan. 26, 2015, 7:03 p.m. UTC 
In order to allow a runtime self relocating PrePi instance, change the
allowable PCD types for the following PCDs:

  gArmTokenSpaceGuid.PcdSystemMemoryBase
  gArmTokenSpaceGuid.PcdSystemMemorySize
  gArmTokenSpaceGuid.PcdFdBaseAddress
  gArmTokenSpaceGuid.PcdFvBaseAddress

to include PcdsPatchableInModule. This makes the build system correctly
distinguish fixed PCDs from PCDs whose value may be different from the
assigned value at compile time.

Note that this only affects platforms that explicitly mark these PCDs as
PatchableInModule in the DSC. All existing platforms that use FixedPcd
will not be affected by this change.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 ArmPkg/ArmPkg.dec | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)
diff mbox

Patch

diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec
index d7a4826d931a..b01de13e5f78 100644
--- a/ArmPkg/ArmPkg.dec
+++ b/ArmPkg/ArmPkg.dec
@@ -93,14 +93,6 @@ 
   gArmTokenSpaceGuid.PcdSecureFvSize|0x0|UINT32|0x00000030
 
   #
-  # ARM Normal (or Non Secure) Firmware PCDs
-  #
-  gArmTokenSpaceGuid.PcdFdBaseAddress|0|UINT64|0x0000002B
-  gArmTokenSpaceGuid.PcdFdSize|0|UINT32|0x0000002C
-  gArmTokenSpaceGuid.PcdFvBaseAddress|0|UINT64|0x0000002D
-  gArmTokenSpaceGuid.PcdFvSize|0|UINT32|0x0000002E
-
-  #
   # ARM Hypervisor Firmware PCDs
   #
   gArmTokenSpaceGuid.PcdHypFdBaseAddress|0|UINT32|0x0000003A
@@ -127,6 +119,15 @@ 
   # Maximum file size for TFTP servers that do not support 'tsize' extension
   gArmTokenSpaceGuid.PcdMaxTftpFileSize|0x01000000|UINT32|0x00000000
 
+  #
+  # ARM Normal (or Non Secure) Firmware PCDs
+  #
+  gArmTokenSpaceGuid.PcdFdSize|0|UINT32|0x0000002C
+  gArmTokenSpaceGuid.PcdFvSize|0|UINT32|0x0000002E
+
+[PcdsFixedAtBuild.common, PcdsPatchableInModule.common]
+  gArmTokenSpaceGuid.PcdFdBaseAddress|0|UINT64|0x0000002B
+  gArmTokenSpaceGuid.PcdFvBaseAddress|0|UINT64|0x0000002D
 
 [PcdsFixedAtBuild.ARM]
   #
@@ -207,16 +208,18 @@ 
 
 
 #
-# These PCDs are also defined as 'PcdsDynamic' to be redefined when using UEFI in a
-# context of virtual machine.
+# These PCDs are also defined as 'PcdsDynamic' or 'PcdsPatchableInModule' to be
+# redefined when using UEFI in a context of virtual machine.
 #
-[PcdsFixedAtBuild.common, PcdsDynamic.common]
+[PcdsFixedAtBuild.common, PcdsDynamic.common, PcdsPatchableInModule.common]
+
   # System Memory (DRAM): These PCDs define the region of in-built system memory
   # Some platforms can get DRAM extensions, these additional regions will be declared
   # to UEFI by ArmPlatformLib
   gArmTokenSpaceGuid.PcdSystemMemoryBase|0|UINT64|0x00000029
   gArmTokenSpaceGuid.PcdSystemMemorySize|0|UINT64|0x0000002A
 
+[PcdsFixedAtBuild.common, PcdsDynamic.common]
   #
   # ARM Architectural Timer
   #