X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fpowerpc%2Fboot%2Fmain.c;h=ae32801ebd69de64fee9e4946f569ebb81813b95;hb=0d876c6a96e2cabf8632e8066b617d9c2dec9518;hp=416dc3857bfe8dcc468c8f6c3d0953970a31de40;hpb=939ab20152390c8ccccfa6fac0830405ca91d903;p=linux-2.6-omap-h63xx.git

diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index 416dc3857bf..ae32801ebd6 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -16,19 +16,8 @@
 #include "stdio.h"
 #include "ops.h"
 #include "gunzip_util.h"
-#include "flatdevtree.h"
 #include "reg.h"
 
-extern char _start[];
-extern char __bss_start[];
-extern char _end[];
-extern char _vmlinux_start[];
-extern char _vmlinux_end[];
-extern char _initrd_start[];
-extern char _initrd_end[];
-extern char _dtb_start[];
-extern char _dtb_end[];
-
 static struct gunzip_state gzstate;
 
 struct addr_range {
@@ -67,9 +56,19 @@ static struct addr_range prep_kernel(void)
 	if (platform_ops.vmlinux_alloc) {
 		addr = platform_ops.vmlinux_alloc(ei.memsize);
 	} else {
-		if ((unsigned long)_start < ei.memsize)
+		/*
+		 * Check if the kernel image (without bss) would overwrite the
+		 * bootwrapper. The device tree has been moved in fdt_init()
+		 * to an area allocated with malloc() (somewhere past _end).
+		 */
+		if ((unsigned long)_start < ei.loadsize)
 			fatal("Insufficient memory for kernel at address 0!"
-			       " (_start=%p)\n\r", _start);
+			       " (_start=%p, uncomressed size=%08x)\n\r",
+			       _start, ei.loadsize);
+
+		if ((unsigned long)_end < ei.memsize)
+			fatal("The final kernel image would overwrite the "
+					"device tree\n\r");
 	}
 
 	/* Finally, gunzip the kernel */