From 450a001c09d9df15b483b152e8cbd13095e87d57 Mon Sep 17 00:00:00 2001
From: Leif Lindholm <quic_llindhol@quicinc.com>
Date: Tue, 1 Oct 2024 16:01:00 +0100
Subject: MdePkg: export additional Property functions from BaseFdtLib

- FdtSetPropU64
- FdtAppendProp
- FdtDelProp

Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com>
---
 MdePkg/Include/Library/FdtLib.h    | 62 +++++++++++++++++++++++++++++++
 MdePkg/Library/BaseFdtLib/FdtLib.c | 75 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 137 insertions(+)

(limited to 'MdePkg')

diff --git a/MdePkg/Include/Library/FdtLib.h b/MdePkg/Include/Library/FdtLib.h
index e4471fc2ab..1a36f58ebe 100644
--- a/MdePkg/Include/Library/FdtLib.h
+++ b/MdePkg/Include/Library/FdtLib.h
@@ -588,6 +588,68 @@ FdtSetProperty (
   IN UINT32       Length
   );
 
+/**
+  Set a property to a 64-bit integer.
+
+  @param[in] Fdt            The pointer to FDT blob.
+  @param[in] NodeOffset     The offset to the node offset which want to add in.
+  @param[in] Name           The name to name the property.
+  @param[in] Value          The value (big-endian) to the property value.
+
+  @return  Zero for successfully, otherwise failed.
+
+ **/
+INT32
+EFIAPI
+FdtSetPropU64 (
+  IN VOID         *Fdt,
+  IN INT32        NodeOffset,
+  IN CONST CHAR8  *Name,
+  IN UINT64       Value
+  );
+
+/**
+  Append or create a property in the given node.
+
+  @param[in] Fdt            The pointer to FDT blob.
+  @param[in] NodeOffset     The offset to the node offset which want to add in.
+  @param[in] Name           The name to name the property.
+  @param[in] Value          The value (big-endian) to the property value.
+  @param[in] Length         The length to the size of the property.
+
+  @return  Zero for successfully, otherwise failed.
+
+ **/
+INT32
+EFIAPI
+FdtAppendProp (
+  IN VOID         *Fdt,
+  IN INT32        NodeOffset,
+  IN CONST CHAR8  *Name,
+  IN CONST VOID   *Value,
+  IN UINT32       Length
+  );
+
+/**
+  Delete a property.
+
+  This function will delete data from the blob, and will therefore
+  change the offsets of some existing nodes.
+
+  @param[in][out] Fdt         Pointer to the device tree blob.
+  @param[in]      NodeOffset  Offset of the node whose property to nop.
+  @param[in]      Name        Name of the property to nop.
+
+  @return  Zero for successfully, otherwise failed.
+
+**/
+INT32
+FdtDelProp (
+  IN OUT VOID         *Fdt,
+  IN     INT32        NodeOffset,
+  IN     CONST CHAR8  *Name
+  );
+
 /**
   Returns the name of a given node.
 
diff --git a/MdePkg/Library/BaseFdtLib/FdtLib.c b/MdePkg/Library/BaseFdtLib/FdtLib.c
index 530549ba75..960984842d 100644
--- a/MdePkg/Library/BaseFdtLib/FdtLib.c
+++ b/MdePkg/Library/BaseFdtLib/FdtLib.c
@@ -482,6 +482,81 @@ FdtSetProperty (
   return fdt_setprop (Fdt, NodeOffset, Name, Value, (int)Length);
 }
 
+/**
+  Set a property to a 64-bit integer.
+
+  @param[in] Fdt            The pointer to FDT blob.
+  @param[in] NodeOffset     The offset to the node offset which want to add in.
+  @param[in] Name           The name to name the property.
+  @param[in] Value          The value (big-endian) to the property value.
+
+  @return  Zero for successfully, otherwise failed.
+
+ **/
+INT32
+EFIAPI
+FdtSetPropU64 (
+  IN VOID         *Fdt,
+  IN INT32        NodeOffset,
+  IN CONST CHAR8  *Name,
+  IN UINT64       Value
+  )
+{
+  UINT64  Tmp;
+
+  Tmp = cpu_to_fdt64 (Value);
+
+  return fdt_setprop (Fdt, NodeOffset, Name, &Tmp, sizeof (Tmp));
+}
+
+/**
+  Append or create a property in the given node.
+
+  @param[in] Fdt            The pointer to FDT blob.
+  @param[in] NodeOffset     The offset to the node offset which want to add in.
+  @param[in] Name           The name to name the property.
+  @param[in] Value          The value (big-endian) to the property value.
+  @param[in] Length         The length to the size of the property.
+
+  @return  Zero for successfully, otherwise failed.
+
+ **/
+INT32
+EFIAPI
+FdtAppendProp (
+  IN VOID         *Fdt,
+  IN INT32        NodeOffset,
+  IN CONST CHAR8  *Name,
+  IN CONST VOID   *Value,
+  IN UINT32       Length
+  )
+{
+  return fdt_appendprop (Fdt, NodeOffset, Name, Value, (int)Length);
+}
+
+/**
+  Delete a property.
+
+  This function will delete data from the blob, and will therefore
+  change the offsets of some existing nodes.
+
+  @param[in][out] Fdt         Pointer to the device tree blob.
+  @param[in]      NodeOffset  Offset of the node whose property to nop.
+  @param[in]      Name        Name of the property to nop.
+
+  @return  Zero for successfully, otherwise failed.
+
+**/
+INT32
+FdtDelProp (
+  IN OUT VOID         *Fdt,
+  IN     INT32        NodeOffset,
+  IN     CONST CHAR8  *Name
+  )
+{
+  return fdt_delprop (Fdt, NodeOffset, Name);
+}
+
 /**
   Returns the name of a given node.
 
-- 
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