Don't know if this is the correct fix, but it fixes compilation of the PPC
targets.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>

Index: config/coreboot_ram.ld
===================================================================
--- config/coreboot_ram.ld	(revision 4005)
+++ config/coreboot_ram.ld	(working copy)
@@ -75,6 +75,17 @@
 		*(.data)
 		_edata = .;
 	}
+
+	.sdata : {
+		_SDA_BASE_ = .;
+		*(.sdata)
+	}
+
+	.sdata2 : {
+		_SDA2_BASE_ = .;
+		*(.sdata2)
+	}
+
 	/*
 	 * bss does not contain data, it is just a space that should be zero
 	 * initialized on startup. (typically uninitialized global variables)
Index: arch/ppc/init/ldscript.lb
===================================================================
--- arch/ppc/init/ldscript.lb	(revision 4005)
+++ arch/ppc/init/ldscript.lb	(working copy)
@@ -79,6 +79,18 @@
 		_eram = . ;
 	}
 
+	.sdata : {
+		_SDA_BASE_ = .;
+		*(.sdata)
+	}
+
+	.sdata2 : {
+		_SDA2_BASE_ = .;
+		*(.sdata2)
+	}
+
+
+
 	/*
 	 * Absolute location of where coreboot will be relocated in RAM.
 	 */
