diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2017-12-09 14:21:31 +0000 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2017-12-12 18:36:17 +0000 |
| commit | d7b0eeadeda2622836817ec7d05adeb553365a62 (patch) | |
| tree | fcb7cb6e97980adf00946be90d5feaf6381771ab | |
| parent | 7ad2839678e1518b77b326b7c9e5d7502a2a8b25 (diff) | |
| download | edk2-platforms-d7b0eeadeda2622836817ec7d05adeb553365a62.tar.xz | |
Silicon/SynQuacer: disable PCI RC DT node if RC disabled
If a PCIe RC is not enabled (due to the fact that the slot is not
populated), set its DT node 'status' property to 'disabled' so that
the OS will not attempt to attach to it.
This means we will need to switch from the default DtPlatformDtbLoaderLib
to a special one for our platform.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
4 files changed, 152 insertions, 6 deletions
diff --git a/Platform/Socionext/DeveloperBox/DeveloperBox.dsc b/Platform/Socionext/DeveloperBox/DeveloperBox.dsc index 136b17b652..86685d1dec 100644 --- a/Platform/Socionext/DeveloperBox/DeveloperBox.dsc +++ b/Platform/Socionext/DeveloperBox/DeveloperBox.dsc @@ -160,7 +160,8 @@ PerformanceLib|MdeModulePkg/Library/DxeCorePerformanceLib/DxeCorePerformanceLib.inf
[LibraryClasses.common.DXE_DRIVER]
- DtPlatformDtbLoaderLib|EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.inf
+ DtPlatformDtbLoaderLib|Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.inf
+ FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf
SecurityManagementLib|MdeModulePkg/Library/DxeSecurityManagementLib/DxeSecurityManagementLib.inf
PerformanceLib|MdeModulePkg/Library/DxePerformanceLib/DxePerformanceLib.inf
@@ -613,10 +614,7 @@ #
# Console preference selection
#
- EmbeddedPkg/Drivers/ConsolePrefDxe/ConsolePrefDxe.inf {
- <LibraryClasses>
- FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf
- }
+ EmbeddedPkg/Drivers/ConsolePrefDxe/ConsolePrefDxe.inf
#
# DT support
diff --git a/Platform/Socionext/SynQuacerEvalBoard/SynQuacerEvalBoard.dsc b/Platform/Socionext/SynQuacerEvalBoard/SynQuacerEvalBoard.dsc index 7dc5652218..42c5f64f7f 100644 --- a/Platform/Socionext/SynQuacerEvalBoard/SynQuacerEvalBoard.dsc +++ b/Platform/Socionext/SynQuacerEvalBoard/SynQuacerEvalBoard.dsc @@ -159,7 +159,8 @@ PerformanceLib|MdeModulePkg/Library/DxeCorePerformanceLib/DxeCorePerformanceLib.inf
[LibraryClasses.common.DXE_DRIVER]
- DtPlatformDtbLoaderLib|EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.inf
+ DtPlatformDtbLoaderLib|Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.inf
+ FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf
SecurityManagementLib|MdeModulePkg/Library/DxeSecurityManagementLib/DxeSecurityManagementLib.inf
PerformanceLib|MdeModulePkg/Library/DxePerformanceLib/DxePerformanceLib.inf
diff --git a/Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.c b/Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.c new file mode 100644 index 0000000000..cebf30c9b6 --- /dev/null +++ b/Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.c @@ -0,0 +1,105 @@ +/** @file
+*
+* Copyright (c) 2017, Linaro, Ltd. All rights reserved.
+*
+* This program and the accompanying materials
+* are licensed and made available under the terms and conditions of the BSD License
+* which accompanies this distribution. The full text of the license may be found at
+* http://opensource.org/licenses/bsd-license.php
+*
+* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+#include <PiDxe.h>
+
+#include <libfdt.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DxeServicesLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+// add enough space for two instances of 'status = "disabled"'
+#define DTB_PADDING 64
+
+STATIC
+VOID
+DisableDtNode (
+ IN VOID *Dtb,
+ IN CONST CHAR8 *NodePath
+ )
+{
+ INT32 Node;
+ INT32 Rc;
+
+ Node = fdt_path_offset (Dtb, NodePath);
+ if (Node < 0) {
+ DEBUG ((DEBUG_ERROR, "%a: failed to locate DT path '%a': %a\n",
+ __FUNCTION__, NodePath, fdt_strerror (Node)));
+ return;
+ }
+ Rc = fdt_setprop_string (Dtb, Node, "status", "disabled");
+ if (Rc < 0) {
+ DEBUG ((DEBUG_ERROR, "%a: failed to set status to 'disabled' on '%a': %a\n",
+ __FUNCTION__, NodePath, fdt_strerror (Rc)));
+ }
+}
+
+/**
+ Return a pool allocated copy of the DTB image that is appropriate for
+ booting the current platform via DT.
+
+ @param[out] Dtb Pointer to the DTB copy
+ @param[out] DtbSize Size of the DTB copy
+
+ @retval EFI_SUCCESS Operation completed successfully
+ @retval EFI_NOT_FOUND No suitable DTB image could be located
+ @retval EFI_OUT_OF_RESOURCES No pool memory available
+
+**/
+EFI_STATUS
+EFIAPI
+DtPlatformLoadDtb (
+ OUT VOID **Dtb,
+ OUT UINTN *DtbSize
+ )
+{
+ EFI_STATUS Status;
+ VOID *OrigDtb;
+ VOID *CopyDtb;
+ UINTN OrigDtbSize;
+ UINTN CopyDtbSize;
+ INT32 Rc;
+
+ Status = GetSectionFromAnyFv (&gDtPlatformDefaultDtbFileGuid,
+ EFI_SECTION_RAW, 0, &OrigDtb, &OrigDtbSize);
+ if (EFI_ERROR (Status)) {
+ return EFI_NOT_FOUND;
+ }
+
+ CopyDtbSize = OrigDtbSize + DTB_PADDING;
+ CopyDtb = AllocatePool (CopyDtbSize);
+ if (CopyDtb == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Rc = fdt_open_into (OrigDtb, CopyDtb, CopyDtbSize);
+ if (Rc < 0) {
+ DEBUG ((DEBUG_ERROR, "%a: fdt_open_into () failed: %a\n", __FUNCTION__,
+ fdt_strerror (Rc)));
+ return EFI_NOT_FOUND;
+ }
+
+ if (!(PcdGet8 (PcdPcieEnableMask) & BIT0)) {
+ DisableDtNode (CopyDtb, "/pcie@60000000");
+ }
+ if (!(PcdGet8 (PcdPcieEnableMask) & BIT1)) {
+ DisableDtNode (CopyDtb, "/pcie@70000000");
+ }
+
+ *Dtb = CopyDtb;
+ *DtbSize = CopyDtbSize;
+
+ return EFI_SUCCESS;
+}
diff --git a/Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.inf b/Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.inf new file mode 100644 index 0000000000..e1f564f730 --- /dev/null +++ b/Silicon/Socionext/SynQuacer/Library/SynQuacerDtbLoaderLib/SynQuacerDtbLoaderLib.inf @@ -0,0 +1,42 @@ +/** @file
+*
+* Copyright (c) 2017, Linaro, Ltd. All rights reserved.
+*
+* This program and the accompanying materials
+* are licensed and made available under the terms and conditions of the BSD License
+* which accompanies this distribution. The full text of the license may be found at
+* http://opensource.org/licenses/bsd-license.php
+*
+* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+[Defines]
+ INF_VERSION = 0x0001001A
+ BASE_NAME = SynQuacerDtbLoaderLib
+ FILE_GUID = 59df69c4-8724-4e49-8974-d0691364338c
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = DtPlatformDtbLoaderLib|DXE_DRIVER
+
+[Sources]
+ SynQuacerDtbLoaderLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ Silicon/Socionext/SynQuacer/SynQuacer.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ DxeServicesLib
+ FdtLib
+ MemoryAllocationLib
+
+[Pcd]
+ gSynQuacerTokenSpaceGuid.PcdPcieEnableMask
+
+[Guids]
+ gDtPlatformDefaultDtbFileGuid
|