armv8: Add Secure Monitor/Hypervisor Call (SMC/HVC) infrastructure

[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 03cd9f60f943f496ad1a6d34feed614a1f6d1e1a..d48a905cf3cf1707593308339da041e39eda5c32 100644 (file)
--- a/arch/arm/cpu/u-boot.lds
+++ b/arch/arm/cpu/u-boot.lds
@@ -14,6 +14,23 @@ OUTPUT_ARCH(arm)
 ENTRY(_start)
 SECTIONS
 {
+       /*
+        * 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.
+        *
+        * The reason that move .rel._secure at the beginning, is to
+        * avoid hole in the final image.
+        */
+       /DISCARD/ : { *(.rel._secure*) }
        . = 0x00000000;
 
        . = ALIGN(4);