include: Add separate header for OpenSBI version

Currently, the OpenSBI version is in top-level Makefile so
firmware linking to OpenSBI static library have no-way to
know OpenSBI version.

This patch moves OpenSBI version from top-level Makefile to
sbi/sbi_version.h header which provides OPENSBI_VERSION_MAJOR
and OPENSBI_VERSION_MINOR defines.

NOTE: the SBI spec (or SBI ecall interface) version is
different. The SBI spec version is provided by functions
sbi_ecall_version_major() and sbi_ecall_version_minor().

Signed-off-by: Anup Patel <anup.patel@wdc.com>

Makefile

@@ -7,10 +7,6 @@
 #   Anup Patel <anup.patel@wdc.com>
 #
 
-# Current Version
-MAJOR = 0
-MINOR = 1
-
 # Select Make Options:
 # o  Do not use make's built-in rules and variables
 # o  Do not print "Entering directory ...";
@@ -54,6 +50,10 @@ export include_dir=$(CURDIR)/include
 export lib_dir=$(CURDIR)/lib
 export firmware_dir=$(CURDIR)/firmware
 
+# Find library version
+OPENSBI_VERSION_MAJOR=`grep MAJOR $(include_dir)/sbi/sbi_version.h | awk '{ print $$3 }'`
+OPENSBI_VERSION_MINOR=`grep MINOR $(include_dir)/sbi/sbi_version.h | awk '{ print $$3 }'`
+
 # Setup list of objects.mk files
 ifdef PLATFORM
 platform-object-mks=$(shell if [ -d $(platform_dir) ]; then find $(platform_dir) -iname "objects.mk" | sort -r; fi)
@@ -92,9 +92,7 @@ deps-y+=$(platform-common-objs-path-y:.o=.dep)
 deps-y+=$(lib-objs-path-y:.o=.dep)
 deps-y+=$(firmware-objs-path-y:.o=.dep)
 
-GENFLAGS	=	-DOPENSBI_MAJOR=$(MAJOR)
+GENFLAGS	=	-I$(platform_dir)/include
-GENFLAGS	+=	-DOPENSBI_MINOR=$(MINOR)
-GENFLAGS	+=	-I$(platform_dir)/include
 GENFLAGS	+=	-I$(platform_common_dir)/include
 GENFLAGS	+=	-I$(include_dir)
 GENFLAGS	+=	$(platform-common-genflags-y)
@@ -274,7 +272,7 @@ $(build_dir)/docs/latex/refman.tex: $(build_dir)/docs/doxygen.cfg
 	$(CMD_PREFIX)doxygen $(build_dir)/docs/doxygen.cfg
 $(build_dir)/docs/doxygen.cfg: $(src_dir)/docs/doxygen.cfg
 	$(CMD_PREFIX)mkdir -p $(build_dir)/docs
-	$(CMD_PREFIX)cat docs/doxygen.cfg | sed -e "s#@@SRC_DIR@@#$(src_dir)#" -e "s#@@BUILD_DIR@@#$(build_dir)#" -e "s#@@OPENSBI_MAJOR@@#$(MAJOR)#" -e "s#@@OPENSBI_MINOR@@#$(MINOR)#" > $(build_dir)/docs/doxygen.cfg
+	$(CMD_PREFIX)cat docs/doxygen.cfg | sed -e "s#@@SRC_DIR@@#$(src_dir)#" -e "s#@@BUILD_DIR@@#$(build_dir)#" -e "s#@@OPENSBI_MAJOR@@#$(OPENSBI_VERSION_MAJOR)#" -e "s#@@OPENSBI_MINOR@@#$(OPENSBI_VERSION_MINOR)#" > $(build_dir)/docs/doxygen.cfg
 .PHONY: docs
 docs: $(build_dir)/docs/latex/refman.pdf
 

include/sbi/sbi_version.h

@@ -0,0 +1,16 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2019 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ */
+
+#ifndef __SBI_VERSION_H__
+#define __SBI_VERSION_H__
+
+#define OPENSBI_VERSION_MAJOR		0
+#define OPENSBI_VERSION_MINOR		1
+
+#endif

lib/sbi_init.c

@@ -16,6 +16,7 @@
 #include <sbi/sbi_platform.h>
 #include <sbi/sbi_system.h>
 #include <sbi/sbi_timer.h>
+#include <sbi/sbi_version.h>
 
 #define BANNER \
 	"   ____                    _____ ____ _____\n" \
@@ -63,7 +64,7 @@ static void __noreturn init_coldboot(struct sbi_scratch *scratch, u32 hartid)
 
 	misa_string(str, sizeof(str));
 	sbi_printf("\nOpenSBI v%d.%d (%s %s)\n",
-		   OPENSBI_MAJOR, OPENSBI_MINOR,
+		   OPENSBI_VERSION_MAJOR, OPENSBI_VERSION_MINOR,
 		   __DATE__, __TIME__);
 
 	sbi_printf(BANNER);