ARM: OMAP4/5: Add generic board detection hook

[u-boot] / arch / arm / cpu / u-boot.lds

diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds
index d48a905cf3cf1707593308339da041e39eda5c32..e148ab75137c1ed33f4879b09ac497a476bbb8ff 100644 (file)
--- a/arch/arm/cpu/u-boot.lds
+++ b/arch/arm/cpu/u-boot.lds
@@ -14,23 +14,24 @@ OUTPUT_ARCH(arm)
 ENTRY(_start)
 SECTIONS
 {
+#if defined(CONFIG_ARMV7_SECURE_BASE) && defined(CONFIG_ARMV7_NONSEC)
        /*
-        * Discard the relocation entries for secure text.
-        * The secure code is bundled with u-boot image, so there will
-        * be relocations entries for the secure code, since we use
-        * "-mword-relocations" to compile and "-pie" to link into the
-        * final image. We do not need the relocation entries for secure
-        * code, because secure code will not be relocated, it only needs
-        * to be copied from loading address to CONFIG_ARMV7_SECURE_BASE,
-        * which is the linking and running address for secure code.
-        * If keep the relocation entries in .rel.dyn section,
-        * "relocation offset + linking address" may locates into an
-        * address that is reserved by SoC, then will trigger data abort.
+        * If CONFIG_ARMV7_SECURE_BASE is true, secure code will not
+        * bundle with u-boot, and code offsets are fixed. Secure zone
+        * only needs to be copied from the loading address to
+        * CONFIG_ARMV7_SECURE_BASE, which is the linking and running
+        * address for secure code.
         *
-        * The reason that move .rel._secure at the beginning, is to
-        * avoid hole in the final image.
+        * If CONFIG_ARMV7_SECURE_BASE is undefined, the secure zone will
+        * be included in u-boot address space, and some absolute address
+        * were used in secure code. The absolute addresses of the secure
+        * code also needs to be relocated along with the accompanying u-boot
+        * code.
+        *
+        * So DISCARD is only for CONFIG_ARMV7_SECURE_BASE.
         */
        /DISCARD/ : { *(.rel._secure*) }
+#endif
        . = 0x00000000;
 
        . = ALIGN(4);