sh: Preparation for uncached jumps through PMB.

Presently most of the 29-bit physical parts do P1/P2 segmentation
with a 1:1 cached/uncached mapping, jumping between the two to
control the caching behaviour. This provides the basic infrastructure
to maintain this behaviour on 32-bit physical parts that don't map
P1/P2 at all, using a shiny new linker section and corresponding
fixmap entry.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/asm-sh/system_64.h b/include/asm-sh/system_64.h
index 0e466e991f7d..943acf5ea07c 100644
--- a/include/asm-sh/system_64.h
+++ b/include/asm-sh/system_64.h
@@ -32,8 +32,9 @@ do {								\
                               &next->thread);                   \
 } while (0)
 
-/* No segmentation.. */
-#define jump_to_P2()    do { } while (0)
-#define back_to_P1()    do { } while (0)
+#define __uses_jump_to_uncached
+
+#define jump_to_uncached()      do { } while (0)
+#define back_to_cached()        do { } while (0)
 
 #endif /* __ASM_SH_SYSTEM_64_H */