[PATCH v2 4/5] kvx: Request enough privilege to boot Linux

[Jules Maselbas]

At startup barebox must take all the privileges that will be
requested by Linux.

Signed-off-by: Jules Maselbas <jmaselbas at kalray.eu>
---
changes v1 -> v2: nothing
---
 arch/kvx/cpu/start.S             |  4 ++++
 arch/kvx/include/asm/privilege.h | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/kvx/cpu/start.S b/arch/kvx/cpu/start.S
index d90272c71..a647e8a51 100644
--- a/arch/kvx/cpu/start.S
+++ b/arch/kvx/cpu/start.S
@@ -115,6 +115,10 @@ ENDPROC(kvx_start)
 	wfxl $psow = $r21 ;\
 	;; ;\
 	wfxm $psow = $r22 ;\
+	;; ;\
+	make $r21 = DO_WFXL_VALUE_##__pl ;\
+	;; ;\
+	wfxl $dow = $r21 ;\
 	;;
 
 /**
diff --git a/arch/kvx/include/asm/privilege.h b/arch/kvx/include/asm/privilege.h
index 36b9ade49..f183b24d4 100644
--- a/arch/kvx/include/asm/privilege.h
+++ b/arch/kvx/include/asm/privilege.h
@@ -113,6 +113,21 @@
 #define ITO_WFXM_VALUE_PL_CUR_PLUS_1	ITO_WFXM_VALUE(PL_CUR_PLUS_1)
 #define ITO_WFXM_VALUE_PL_CUR		ITO_WFXM_VALUE(PL_CUR)
 
+/**
+ * Debug Owner configuration
+ */
+
+#define DO_WFXL_OWN(__field, __pl) \
+	SFR_SET_VAL_WFXL(DO, __field, __pl)
+
+#define DO_WFXL_VALUE(__pl) (DO_WFXL_OWN(B0, __pl) | \
+			     DO_WFXL_OWN(B1, __pl) | \
+			     DO_WFXL_OWN(W0, __pl) | \
+			     DO_WFXL_OWN(W1, __pl))
+
+#define DO_WFXL_VALUE_PL_CUR_PLUS_1     DO_WFXL_VALUE(PL_CUR_PLUS_1)
+#define DO_WFXL_VALUE_PL_CUR            DO_WFXL_VALUE(PL_CUR)
+
 /**
  * Misc owner configuration
  */
@@ -160,6 +175,7 @@
 					 PSO_WFXL_OWN(IE, __pl) | \
 					 PSO_WFXL_OWN(HLE, __pl) | \
 					 PSO_WFXL_OWN(SRE, __pl) | \
+					 PSO_WFXL_OWN(DAUS, __pl) | \
 					 PSO_WFXL_OWN(ICE, __pl) | \
 					 PSO_WFXL_OWN(USE, __pl) | \
 					 PSO_WFXL_OWN(DCE, __pl) | \
-- 
2.17.1