powerpc/powernv: Basic support for OPAL
Add definition of OPAL interfaces along with the wrappers to call
into OPAL runtime and the early device-tree parsing hook to locate
the OPAL runtime firmware.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 7b90c56..831a201 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -54,6 +54,8 @@
#include <asm/pci-bridge.h>
#include <asm/phyp_dump.h>
#include <asm/kexec.h>
+#include <asm/opal.h>
+
#include <mm/mmu_decl.h>
#ifdef DEBUG
@@ -707,6 +709,11 @@
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
#endif
+#ifdef CONFIG_PPC_POWERNV
+ /* Some machines might need OPAL info for debugging, grab it now. */
+ of_scan_flat_dt(early_init_dt_scan_opal, NULL);
+#endif
+
#ifdef CONFIG_PHYP_DUMP
/* scan tree to see if dump occurred during last boot */
of_scan_flat_dt(early_init_dt_scan_phyp_dump, NULL);