EmbeddedPkg/FdtLib: Added support to load Fdt from Semihosting

The FDT is also installed into the UEFI configuration table to be used
by the OS loader.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15905 6f19259b-4bc3-4df7-8a09-765794883524

EmbeddedPkg/Include/libfdt_env.h

@@ -15,6 +15,7 @@
 #ifndef _LIBFDT_ENV_H
 #define _LIBFDT_ENV_H
 
+#include <Uefi.h>
 #include <Library/BaseLib.h>
 #include <Library/BaseMemoryLib.h>
 
@@ -78,4 +79,19 @@ static inline char *strchr(const char *s, int c) {
   return AsciiStrStr (s, pattern);
 }
 
+/**
+  Load and Install FDT from Semihosting
+
+  @param Filename   Name of the file to load from semihosting
+
+  @return EFI_SUCCESS           Fdt Blob was successfully installed into the configuration table
+                                from semihosting
+  @return EFI_NOT_FOUND         Fail to locate the file in semihosting
+  @return EFI_OUT_OF_RESOURCES  Fail to allocate memory to contain the blob
+**/
+EFI_STATUS
+InstallFdtFromSemihosting (
+  IN  CONST CHAR16*   FileName
+  );
+
 #endif /* _LIBFDT_ENV_H */