[rtems commit] bsp/qoriq: Enable 64-bit mode for exceptions

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    5f42a0e4788be25bb14bc995f80c1d26f43e0b73
Changeset: http://git.rtems.org/rtems/commit/?id=5f42a0e4788be25bb14bc995f80c1d26f43e0b73

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Wed Aug  2 09:16:10 2017 +0200

bsp/qoriq: Enable 64-bit mode for exceptions

Update #3082.

---

 c/src/lib/libbsp/powerpc/qoriq/start/start.S | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/c/src/lib/libbsp/powerpc/qoriq/start/start.S b/c/src/lib/libbsp/powerpc/qoriq/start/start.S
index bf1e3b9..c0bf1d5 100644
--- a/c/src/lib/libbsp/powerpc/qoriq/start/start.S
+++ b/c/src/lib/libbsp/powerpc/qoriq/start/start.S
@@ -139,6 +139,12 @@ _start:
 
 .Linitearly:
 #ifdef __powerpc64__
+	/* Enable 64-bit computation mode for exceptions */
+	mfspr	r0, BOOKE_EPCR
+	oris	r0, r0, BOOKE_EPCR_ICM >> 16
+	mtspr	BOOKE_EPCR, r0
+
+	/* Enable 64-bit computation mode */
 	mfmsr	r0
 	oris	r0, r0, MSR_CM >> 16
 	mtmsr	r0