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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-15 13:33:23 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-15 15:39:29 +0100 |
| commit | 969d2eb3875a700a223840d7ea415e78de4f8cbe (patch) | |
| tree | 706dbeca5b060473755ae3efdce38f9dc819c27c /ArmVirtPkg/FdtClientDxe/FdtClientDxe.c | |
| parent | cfc8d51c0cbf97b5e71cfd92dcc6c5760940214f (diff) | |
| download | edk2-969d2eb3875a700a223840d7ea415e78de4f8cbe.tar.gz edk2-969d2eb3875a700a223840d7ea415e78de4f8cbe.tar.bz2 edk2-969d2eb3875a700a223840d7ea415e78de4f8cbe.zip | |
ArmVirtPkg/FdtClientDxe: add methods to iterate over memory nodes
Add high level methods to iterate over all 'reg' properties of all DT
nodes whose device_type properties have the value "memory". Since we are
modifying the FdtClient protocol, update the protocol and the only existing
implementation at the same time.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'ArmVirtPkg/FdtClientDxe/FdtClientDxe.c')
| -rw-r--r-- | ArmVirtPkg/FdtClientDxe/FdtClientDxe.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c index 382e9af6bf..7cc0c44ca1 100644 --- a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c +++ b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c @@ -194,6 +194,79 @@ FindCompatibleNodeReg ( STATIC
EFI_STATUS
+EFIAPI
+FindNextMemoryNodeReg (
+ IN FDT_CLIENT_PROTOCOL *This,
+ IN INT32 PrevNode,
+ OUT INT32 *Node,
+ OUT CONST VOID **Reg,
+ OUT UINTN *AddressCells,
+ OUT UINTN *SizeCells,
+ OUT UINT32 *RegSize
+ )
+{
+ INT32 Prev, Next;
+ CONST CHAR8 *DeviceType;
+ INT32 Len;
+ EFI_STATUS Status;
+
+ ASSERT (mDeviceTreeBase != NULL);
+ ASSERT (Node != NULL);
+
+ for (Prev = PrevNode;; Prev = Next) {
+ Next = fdt_next_node (mDeviceTreeBase, Prev, NULL);
+ if (Next < 0) {
+ break;
+ }
+
+ DeviceType = fdt_getprop (mDeviceTreeBase, Next, "device_type", &Len);
+ if (DeviceType != NULL && AsciiStrCmp (DeviceType, "memory") == 0) {
+ //
+ // Get the 'reg' property of this memory node. For now, we will assume
+ // 8 byte quantities for base and size, respectively.
+ // TODO use #cells root properties instead
+ //
+ Status = GetNodeProperty (This, Next, "reg", Reg, RegSize);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_WARN,
+ "%a: ignoring memory node with no 'reg' property\n",
+ __FUNCTION__));
+ continue;
+ }
+ if ((*RegSize % 16) != 0) {
+ DEBUG ((EFI_D_WARN,
+ "%a: ignoring memory node with invalid 'reg' property (size == 0x%x)\n",
+ __FUNCTION__, *RegSize));
+ continue;
+ }
+
+ *Node = Next;
+ *AddressCells = 2;
+ *SizeCells = 2;
+ return EFI_SUCCESS;
+ }
+ }
+ return EFI_NOT_FOUND;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+FindMemoryNodeReg (
+ IN FDT_CLIENT_PROTOCOL *This,
+ OUT INT32 *Node,
+ OUT CONST VOID **Reg,
+ OUT UINTN *AddressCells,
+ OUT UINTN *SizeCells,
+ OUT UINT32 *RegSize
+ )
+{
+ return FindNextMemoryNodeReg (This, 0, Node, Reg, AddressCells, SizeCells,
+ RegSize);
+}
+
+STATIC
+EFI_STATUS
GetOrInsertChosenNode (
IN FDT_CLIENT_PROTOCOL *This,
OUT INT32 *Node
@@ -225,6 +298,8 @@ STATIC FDT_CLIENT_PROTOCOL mFdtClientProtocol = { FindNextCompatibleNode,
FindCompatibleNodeProperty,
FindCompatibleNodeReg,
+ FindMemoryNodeReg,
+ FindNextMemoryNodeReg,
GetOrInsertChosenNode,
};
|