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| author | Abner Chang <abner.chang@hpe.com> | 2021-10-11 21:27:00 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-10-14 06:25:52 +0000 |
| commit | 77e9b3a7c68cea4eeb64af85e4f695f278172314 (patch) | |
| tree | 77f07daf094acb66bbd8af120e5002cff6fab467 /OvmfPkg/Fdt | |
| parent | 7d78a86ecfc6d86244a552b1bad6fb346439116b (diff) | |
| download | edk2-77e9b3a7c68cea4eeb64af85e4f695f278172314.tar.gz edk2-77e9b3a7c68cea4eeb64af85e4f695f278172314.tar.bz2 edk2-77e9b3a7c68cea4eeb64af85e4f695f278172314.zip | |
ArmVirtPkg/FdtPciPcdProducerLib: Relocate PciPcdProducerLib to OvmfPkg
Relocate PciPcdProducerLib to OvmfPkg/Fdt, this library is
leverage by both ARM and RISC-V archs.
Add OvmfPkg/Fdt maintainers in Maintainers.txt
Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Diffstat (limited to 'OvmfPkg/Fdt')
| -rw-r--r-- | OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.c | 149 | ||||
| -rw-r--r-- | OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf | 42 |
2 files changed, 191 insertions, 0 deletions
diff --git a/OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.c b/OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.c new file mode 100644 index 0000000000..2520101017 --- /dev/null +++ b/OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.c @@ -0,0 +1,149 @@ +/** @file
+ FDT client library for consumers of PCI related dynamic PCDs
+
+ Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include <Protocol/FdtClient.h>
+
+//
+// We expect the "ranges" property of "pci-host-ecam-generic" to consist of
+// records like this.
+//
+#pragma pack (1)
+typedef struct {
+ UINT32 Type;
+ UINT64 ChildBase;
+ UINT64 CpuBase;
+ UINT64 Size;
+} DTB_PCI_HOST_RANGE_RECORD;
+#pragma pack ()
+
+#define DTB_PCI_HOST_RANGE_RELOCATABLE BIT31
+#define DTB_PCI_HOST_RANGE_PREFETCHABLE BIT30
+#define DTB_PCI_HOST_RANGE_ALIASED BIT29
+#define DTB_PCI_HOST_RANGE_MMIO32 BIT25
+#define DTB_PCI_HOST_RANGE_MMIO64 (BIT25 | BIT24)
+#define DTB_PCI_HOST_RANGE_IO BIT24
+#define DTB_PCI_HOST_RANGE_TYPEMASK (BIT31 | BIT30 | BIT29 | BIT25 | BIT24)
+
+STATIC
+RETURN_STATUS
+GetPciIoTranslation (
+ IN FDT_CLIENT_PROTOCOL *FdtClient,
+ IN INT32 Node,
+ OUT UINT64 *IoTranslation
+ )
+{
+ UINT32 RecordIdx;
+ CONST VOID *Prop;
+ UINT32 Len;
+ EFI_STATUS Status;
+ UINT64 IoBase;
+
+ //
+ // Iterate over "ranges".
+ //
+ Status = FdtClient->GetNodeProperty (FdtClient, Node, "ranges", &Prop, &Len);
+ if (EFI_ERROR (Status) || Len == 0 ||
+ Len % sizeof (DTB_PCI_HOST_RANGE_RECORD) != 0) {
+ DEBUG ((EFI_D_ERROR, "%a: 'ranges' not found or invalid\n", __FUNCTION__));
+ return RETURN_PROTOCOL_ERROR;
+ }
+
+ for (RecordIdx = 0; RecordIdx < Len / sizeof (DTB_PCI_HOST_RANGE_RECORD);
+ ++RecordIdx) {
+ CONST DTB_PCI_HOST_RANGE_RECORD *Record;
+ UINT32 Type;
+
+ Record = (CONST DTB_PCI_HOST_RANGE_RECORD *)Prop + RecordIdx;
+ Type = SwapBytes32 (Record->Type) & DTB_PCI_HOST_RANGE_TYPEMASK;
+ if (Type == DTB_PCI_HOST_RANGE_IO) {
+ IoBase = SwapBytes64 (Record->ChildBase);
+ *IoTranslation = SwapBytes64 (Record->CpuBase) - IoBase;
+
+ return RETURN_SUCCESS;
+ }
+ }
+ return RETURN_NOT_FOUND;
+}
+
+RETURN_STATUS
+EFIAPI
+FdtPciPcdProducerLibConstructor (
+ VOID
+ )
+{
+ UINT64 PciExpressBaseAddress;
+ FDT_CLIENT_PROTOCOL *FdtClient;
+ CONST UINT64 *Reg;
+ UINT32 RegSize;
+ EFI_STATUS Status;
+ INT32 Node;
+ RETURN_STATUS RetStatus;
+ UINT64 IoTranslation;
+ RETURN_STATUS PcdStatus;
+
+ PciExpressBaseAddress = PcdGet64 (PcdPciExpressBaseAddress);
+ if (PciExpressBaseAddress != MAX_UINT64) {
+ //
+ // Assume that the fact that PciExpressBaseAddress has been changed from
+ // its default value of MAX_UINT64 implies that this code has been
+ // executed already, in the context of another module. That means we can
+ // assume that PcdPciIoTranslation has been discovered from the DT node
+ // as well.
+ //
+ return EFI_SUCCESS;
+ }
+
+ Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,
+ (VOID **)&FdtClient);
+ ASSERT_EFI_ERROR (Status);
+
+ PciExpressBaseAddress = 0;
+ Status = FdtClient->FindCompatibleNode (FdtClient, "pci-host-ecam-generic",
+ &Node);
+
+ if (!EFI_ERROR (Status)) {
+ Status = FdtClient->GetNodeProperty (FdtClient, Node, "reg",
+ (CONST VOID **)&Reg, &RegSize);
+
+ if (!EFI_ERROR (Status) && RegSize == 2 * sizeof (UINT64)) {
+ PciExpressBaseAddress = SwapBytes64 (*Reg);
+
+ PcdStatus = PcdSetBoolS (PcdPciDisableBusEnumeration, FALSE);
+ ASSERT_RETURN_ERROR (PcdStatus);
+
+ IoTranslation = 0;
+ RetStatus = GetPciIoTranslation (FdtClient, Node, &IoTranslation);
+ if (!RETURN_ERROR (RetStatus)) {
+ PcdStatus = PcdSet64S (PcdPciIoTranslation, IoTranslation);
+ ASSERT_RETURN_ERROR (PcdStatus);
+ } else {
+ //
+ // Support for I/O BARs is not mandatory, and so it does not make sense
+ // to abort in the general case. So leave it up to the actual driver to
+ // complain about this if it wants to, and just issue a warning here.
+ //
+ DEBUG ((EFI_D_WARN,
+ "%a: 'pci-host-ecam-generic' device encountered with no I/O range\n",
+ __FUNCTION__));
+ }
+ }
+ }
+
+ PcdStatus = PcdSet64S (PcdPciExpressBaseAddress, PciExpressBaseAddress);
+ ASSERT_RETURN_ERROR (PcdStatus);
+
+ return RETURN_SUCCESS;
+}
diff --git a/OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf b/OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf new file mode 100644 index 0000000000..0f5156615b --- /dev/null +++ b/OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf @@ -0,0 +1,42 @@ +#/** @file
+# FDT client library for consumers of PCI related dynamic PCDs
+#
+# Copyright (c) 2016, Linaro Ltd. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = FdtPciPcdProducerLib
+ FILE_GUID = D584275B-BF1E-4DF8-A53D-980F5645C5E7
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = PciPcdProducerLib|DXE_DRIVER UEFI_DRIVER
+ CONSTRUCTOR = FdtPciPcdProducerLibConstructor
+
+[Sources]
+ FdtPciPcdProducerLib.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ PcdLib
+ UefiBootServicesTableLib
+
+[Protocols]
+ gFdtClientProtocolGuid ## CONSUMES
+
+[Pcd]
+ gEfiMdePkgTokenSpaceGuid.PcdPciIoTranslation ## PRODUCES
+ gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress ## PRODUCES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration ## PRODUCES
+
+[Depex]
+ gFdtClientProtocolGuid
|