sh: hw-breakpoints: Add preliminary support for SH-4A UBC.

This adds preliminary support for the SH-4A UBC to the hw-breakpoints API.
Presently only a single channel is implemented, and the ptrace interface
still needs to be converted. This is the first step to cleaning up the
long-standing UBC mess, making the UBC more generally accessible, and
finally making it SMP safe.

An additional abstraction will be layered on top of this as with the perf
events code to permit the various CPU families to wire up support for
their own specific UBCs, as many variations exist.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 88cdeb9f72d9..d563884833e9 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -39,6 +39,7 @@ config SUPERH32
         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
         select HAVE_FUNCTION_GRAPH_TRACER
         select HAVE_ARCH_KGDB
+        select HAVE_HW_BREAKPOINT if CPU_SH4A
         select ARCH_HIBERNATION_POSSIBLE if MMU
 
 config SUPERH64