powerpc/powernv: Fix OPAL entry and exit in little endian mode

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 8f3844535fbb2e4167ced361831e6c2aeab9a190..2a03e1e63c7a910c204486f32dc9957c4c6cd47e 100644 (file)
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -34,7 +34,7 @@
        mtmsrd  r12,1;                  \
        LOAD_REG_ADDR(r0,.opal_return); \
        mtlr    r0;                     \
-       li      r0,MSR_DR|MSR_IR;       \
+       li      r0,MSR_DR|MSR_IR|MSR_LE;\
        andc    r12,r12,r0;             \
        li      r0,token;               \
        mtspr   SPRN_HSRR1,r12;         \
@@ -45,6 +45,13 @@
        hrfid
 
 _STATIC(opal_return)
+       /*
+        * Fixup endian on OPAL return... we should be able to simplify
+        * this by instead converting the below trampoline to a set of
+        * bytes (always BE) since MSR:LE will end up fixed up as a side
+        * effect of the rfid.
+        */
+       FIXUP_ENDIAN
        ld      r2,PACATOC(r13);
        ld      r4,8(r1);
        ld      r5,16(r1);