[PATCH 29/39] powerpc/powernv: Fix OPAL entry and exit in little endian mode
From: Anton Blanchard <hidden>
Date: 2013-09-23 02:05:03
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
From: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- arch/powerpc/platforms/powernv/opal-wrappers.S | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 8f38445..2a03e1e 100644
--- 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);
--
1.8.1.2