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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR03MB2699 Subject: [edk2] [PATCH v2] PeiLib : Inform UEFI memory to Linux X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" X-ZohoMail: RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" While creating Hob list, ArmPlatformPkg is hiding UEFI memory. whereas this memory can be used by OS. This patch, allows OS to use UEFI code area. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Udit Kumar Signed-off-by: Meenakshi Aggarwal --- ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c | 69 ---------------------= ---- 1 file changed, 69 deletions(-) diff --git a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c b/ArmPlatformP= kg/MemoryInitPei/MemoryInitPeiLib.c index 2feb11f..d03214b 100644 --- a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c +++ b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c @@ -70,11 +70,7 @@ MemoryPeim ( { ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable; EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes; - UINT64 ResourceLength; EFI_PEI_HOB_POINTERS NextHob; - EFI_PHYSICAL_ADDRESS FdTop; - EFI_PHYSICAL_ADDRESS SystemMemoryTop; - EFI_PHYSICAL_ADDRESS ResourceTop; BOOLEAN Found; =20 // Get Virtual Memory Map from the Platform Library @@ -121,71 +117,6 @@ MemoryPeim ( ); } =20 - // - // Reserved the memory space occupied by the firmware volume - // - - SystemMemoryTop =3D (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemoryBase)= + (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemorySize); - FdTop =3D (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFdBaseAddress) + (EFI_PHYSI= CAL_ADDRESS)PcdGet32 (PcdFdSize); - - // EDK2 does not have the concept of boot firmware copied into DRAM. To = avoid the DXE - // core to overwrite this area we must mark the region with the attribut= e non-present - if ((PcdGet64 (PcdFdBaseAddress) >=3D PcdGet64 (PcdSystemMemoryBase)) &&= (FdTop <=3D SystemMemoryTop)) { - Found =3D FALSE; - - // Search for System Memory Hob that contains the firmware - NextHob.Raw =3D GetHobList (); - while ((NextHob.Raw =3D GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, = NextHob.Raw)) !=3D NULL) { - if ((NextHob.ResourceDescriptor->ResourceType =3D=3D EFI_RESOURCE_SY= STEM_MEMORY) && - (PcdGet64 (PcdFdBaseAddress) >=3D NextHob.ResourceDescriptor->Ph= ysicalStart) && - (FdTop <=3D NextHob.ResourceDescriptor->PhysicalStart + NextHob.= ResourceDescriptor->ResourceLength)) - { - ResourceAttributes =3D NextHob.ResourceDescriptor->ResourceAttribu= te; - ResourceLength =3D NextHob.ResourceDescriptor->ResourceLength; - ResourceTop =3D NextHob.ResourceDescriptor->PhysicalStart + Resour= ceLength; - - if (PcdGet64 (PcdFdBaseAddress) =3D=3D NextHob.ResourceDescriptor-= >PhysicalStart) { - if (SystemMemoryTop =3D=3D FdTop) { - NextHob.ResourceDescriptor->ResourceAttribute =3D ResourceAttr= ibutes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT; - } else { - // Create the System Memory HOB for the firmware with the non-= present attribute - BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY, - ResourceAttributes & ~EFI_RESOURCE= _ATTRIBUTE_PRESENT, - PcdGet64 (PcdFdBaseAddress), - PcdGet32 (PcdFdSize)); - - // Top of the FD is system memory available for UEFI - NextHob.ResourceDescriptor->PhysicalStart +=3D PcdGet32(PcdFdS= ize); - NextHob.ResourceDescriptor->ResourceLength -=3D PcdGet32(PcdFd= Size); - } - } else { - // Create the System Memory HOB for the firmware with the non-pr= esent attribute - BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY, - ResourceAttributes & ~EFI_RESOURCE_A= TTRIBUTE_PRESENT, - PcdGet64 (PcdFdBaseAddress), - PcdGet32 (PcdFdSize)); - - // Update the HOB - NextHob.ResourceDescriptor->ResourceLength =3D PcdGet64 (PcdFdBa= seAddress) - NextHob.ResourceDescriptor->PhysicalStart; - - // If there is some memory available on the top of the FD then c= reate a HOB - if (FdTop < NextHob.ResourceDescriptor->PhysicalStart + Resource= Length) { - // Create the System Memory HOB for the remaining region (top = of the FD) - BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY, - ResourceAttributes, - FdTop, - ResourceTop - FdTop); - } - } - Found =3D TRUE; - break; - } - NextHob.Raw =3D GET_NEXT_HOB (NextHob); - } - - ASSERT(Found); - } - // Build Memory Allocation Hob InitMmu (MemoryTable); =20 --=20 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel