libflash: Add option to install pflash

Extend the libflash package to also install the pflash utility. This
enables users to query and modify the PNOR safely from the host, as well
as supporting future automation changes.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/package/libflash/Config.in b/openpower/package/libflash/Config.in
index eb6f56d..3fb323f 100644
--- a/openpower/package/libflash/Config.in
+++ b/openpower/package/libflash/Config.in
@@ -2,3 +2,8 @@
 	bool "libflash"
 	help
 	  Build libflash shared library
+
+config BR2_PACKAGE_PFLASH
+	bool "pflash"
+	help
+	  Install pflash utility to target
diff --git a/openpower/package/libflash/libflash.mk b/openpower/package/libflash/libflash.mk
index 5417beb..d47edf7 100644
--- a/openpower/package/libflash/libflash.mk
+++ b/openpower/package/libflash/libflash.mk
@@ -17,22 +17,29 @@
 		     OBJCOPY="$(TARGET_OBJCOPY)" OBJDUMP="$(TARGET_OBJDUMP)" \
 		     SIZE="$(TARGET_CROSS)size"
 
+LIBFLASH_MAKE_ENV = \
+	SKIBOOT_VERSION=$(LIBFLASH_VERSION) \
+	       $(MAKE1) $(LIBFLASH_MAKE_OPTS) CROSS_COMPILE=$(TARGET_CROSS)
+
+
 define LIBFLASH_BUILD_CMDS
-	PREFIX=$(STAGING_DIR)/usr SKIBOOT_VERSION=$(LIBFLASH_VERSION) \
-	       $(MAKE1) $(LIBFLASH_MAKE_OPTS) CROSS_COMPILE=$(TARGET_CROSS) \
-	       -C $(@D)/external/shared
+	PREFIX=$(STAGING_DIR)/usr $(LIBFLASH_MAKE_ENV) -C $(@D)/external/shared
+	$(if $(BR2_PACKAGE_PFLASH),
+		PREFIX=$(STAGING_DIR)/usr $(LIBFLASH_MAKE_ENV) \
+		       -C $(@D)/external/pflash)
 endef
 
 define LIBFLASH_INSTALL_STAGING_CMDS
-	PREFIX=$(STAGING_DIR)/usr SKIBOOT_VERSION=$(LIBFLASH_VERSION) \
-	       $(MAKE1) $(LIBFLASH_MAKE_OPTS) CROSS_COMPILE=$(TARGET_CROSS) \
-	       -C $(@D)/external/shared install
+	PREFIX=$(STAGING_DIR)/usr $(LIBFLASH_MAKE_ENV) -C $(@D)/external/shared \
+	       install
 endef
 
 define LIBFLASH_INSTALL_TARGET_CMDS
-	PREFIX=$(TARGET_DIR)/usr SKIBOOT_VERSION=$(LIBFLASH_VERSION) \
-	       $(MAKE1) $(LIBFLASH_MAKE_OPTS) CROSS_COMPILE=$(TARGET_CROSS) \
-	       -C $(@D)/external/shared install-lib
+	PREFIX=$(TARGET_DIR)/usr $(LIBFLASH_MAKE_ENV) -C $(@D)/external/shared \
+	       install-lib
+	$(if $(BR2_PACKAGE_PFLASH),
+		DESTDIR=$(TARGET_DIR) $(LIBFLASH_MAKE_ENV) \
+		       -C $(@D)/external/pflash install)
 endef
 
 $(eval $(generic-package))
diff --git a/openpower/package/petitboot/Config.in b/openpower/package/petitboot/Config.in
index e5769de..ef002b4 100644
--- a/openpower/package/petitboot/Config.in
+++ b/openpower/package/petitboot/Config.in
@@ -27,6 +27,7 @@
 	bool "petitboot-mtd"
 	depends on BR2_PACKAGE_PETITBOOT
 	select BR2_PACKAGE_LIBFLASH
+	select BR2_PACKAGE_PFLASH
 	help
 	  Adds Petitboot support for MTD devices