[build] Expose build timestamp, build name, and product names

Expose the build timestamp (measured in seconds since the Epoch) and
the build name (e.g. "rtl8139.rom" or "ipxe.efi"), and provide the
product name and product short name in a single centralised location.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/Makefile

@@ -96,6 +96,7 @@ SRCDIRS		+= config
 # automatic build system.
 #
 NON_AUTO_SRCS	:=
+NON_AUTO_SRCS	+= core/version.c
 NON_AUTO_SRCS	+= drivers/net/prism2.c
 
 # INCDIRS lists the include path

src/Makefile.housekeeping

@@ -697,19 +697,6 @@ $(BIN)/embedded.% : override CC := env CCACHE_DISABLE=1 $(CC)
 $(BIN)/certstore.% : override CC := env CCACHE_DISABLE=1 $(CC)
 $(BIN)/privkey.% : override CC := env CCACHE_DISABLE=1 $(CC)
 
-# Version number
-#
-CFLAGS_version += -DVERSION_MAJOR=$(VERSION_MAJOR) \
-		  -DVERSION_MINOR=$(VERSION_MINOR) \
-		  -DVERSION_PATCH=$(VERSION_PATCH) \
-		  -DVERSION="\"$(VERSION)\""
-# Make sure the version number gets updated on every git checkout
-ifneq ($(GITVERSION),)
-ifneq ($(wildcard ../.git/index),)
-$(BIN)/version.o : ../.git/index
-endif
-endif
-
 # Debug message autocolourisation range
 #
 DBGCOL_LIST	:= $(BIN)/.dbgcol.list
@@ -1004,13 +991,31 @@ blib : $(BLIB)
 #
 BUILD_ID_CMD	:= perl -e 'printf "0x%08x", int ( rand ( 0xffffffff ) );'
 
+# Build timestamp
+#
+BUILD_TIMESTAMP := $(shell date +%s)
+
+# Build version
+#
+GIT_INDEX := $(if $(GITVERSION),$(if $(wildcard ../.git/index),../.git/index))
+$(BIN)/%.version.o : core/version.c $(MAKEDEPS) $(GIT_INDEX)
+	$(QM)$(ECHO) "  [VERSION] $@"
+	$(Q)$(COMPILE_c) -DBUILD_NAME="\"$*\"" \
+		-DVERSION_MAJOR=$(VERSION_MAJOR) \
+		-DVERSION_MINOR=$(VERSION_MINOR) \
+		-DVERSION_PATCH=$(VERSION_PATCH) \
+		-DVERSION="\"$(VERSION)\"" \
+		-c $< -o $@
+
 # Build an intermediate object file from the objects required for the
 # specified target.
 #
-$(BIN)/%.tmp : $(BLIB) $(MAKEDEPS) $(LDSCRIPT)
+$(BIN)/%.tmp : $(BIN)/%.version.o $(BLIB) $(MAKEDEPS) $(LDSCRIPT)
 	$(QM)$(ECHO) "  [LD] $@"
-	$(Q)$(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $(BLIB) -o $@ \
-		--defsym _build_id=`$(BUILD_ID_CMD)` -Map $(BIN)/$*.tmp.map
+	$(Q)$(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $< $(BLIB) -o $@ \
+		--defsym _build_id=`$(BUILD_ID_CMD)` \
+		--defsym _build_timestamp=$(BUILD_TIMESTAMP) \
+		-Map $(BIN)/$*.tmp.map
 	$(Q)$(OBJDUMP) -ht $@ | $(PERL) $(SORTOBJDUMP) >> $(BIN)/$*.tmp.map
 
 # Keep intermediate object file (useful for debugging)

src/core/main.c

@@ -17,8 +17,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <stddef.h>
 #include <stdio.h>
 #include <ipxe/init.h>
+#include <ipxe/version.h>
 #include <usr/autoboot.h>
-#include <config/general.h>
 
 /**
  * Main entry point
@@ -31,7 +31,7 @@ __asmcall int main ( void ) {
 	initialise();
 
 	/* Some devices take an unreasonably long time to initialise */
-	printf ( PRODUCT_SHORT_NAME " initialising devices..." );
+	printf ( "%s initialising devices...", product_short_name );
 	startup();
 	printf ( "ok\n" );
 

src/core/version.c

@@ -25,12 +25,35 @@ FILE_LICENCE ( GPL2_OR_LATER );
  *
  */
 
+#include <wchar.h>
 #include <ipxe/features.h>
 #include <ipxe/version.h>
+#include <config/general.h>
+
+/**
+ * Create wide-character version of string
+ *
+ * @v string		String
+ * @ret wstring		Wide-character version of string
+ */
+#define WSTRING( string ) _WSTRING ( string )
+#define _WSTRING( string ) L ## string
 
 /** Version number feature */
 FEATURE_VERSION ( VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH );
 
+/** Build timestamp (generated by linker) */
+extern char _build_timestamp[];
+
+/** Build ID (generated by linker) */
+extern char _build_id[];
+
+/** Build timestamp */
+unsigned long build_timestamp = ( ( unsigned long ) _build_timestamp );
+
+/** Build ID */
+unsigned long build_id = ( ( unsigned long ) _build_id );
+
 /** Product major version */
 const int product_major_version = VERSION_MAJOR;
 
@@ -38,4 +61,29 @@ const int product_major_version = VERSION_MAJOR;
 const int product_minor_version = VERSION_MINOR;
 
 /** Product version string */
-const char *product_version = VERSION;
+const char product_version[] = VERSION;
+
+/** Product name string */
+const char product_name[] = PRODUCT_NAME;
+
+/** Product short name string */
+const char product_short_name[] = PRODUCT_SHORT_NAME;
+
+/** Build name string */
+const char build_name[] = BUILD_NAME;
+
+/** Wide-character product version string */
+const wchar_t product_wversion[] = WSTRING ( VERSION );
+
+/** Wide-character product name string */
+const wchar_t product_wname[] = WSTRING ( PRODUCT_NAME );
+
+/** Wide-character product short name string */
+const wchar_t product_short_wname[] = WSTRING ( PRODUCT_SHORT_NAME );
+
+/** Wide-character build name string */
+const wchar_t build_wname[] = WSTRING ( BUILD_NAME );
+
+/** Copy of build name string within ".prefix" */
+const char build_name_prefix[] __attribute__ (( section ( ".prefix.name" ) ))
+	= BUILD_NAME;

src/include/ipxe/version.h

@@ -9,8 +9,19 @@
 
 FILE_LICENCE ( GPL2_OR_LATER );
 
+#include <wchar.h>
+
+extern unsigned long build_timestamp;
+extern unsigned long build_id;
 extern const int product_major_version;
 extern const int product_minor_version;
-extern const char *product_version;
+extern const char product_version[];
+extern const char product_name[];
+extern const char product_short_name[];
+extern const char build_name[];
+extern const wchar_t product_wversion[];
+extern const wchar_t product_wname[];
+extern const wchar_t product_short_wname[];
+extern const wchar_t build_wname[];
 
 #endif /* _IPXE_VERSION_H */

src/interface/efi/efi_driver.c

@@ -23,12 +23,12 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
+#include <ipxe/version.h>
 #include <ipxe/efi/efi.h>
 #include <ipxe/efi/Protocol/DriverBinding.h>
 #include <ipxe/efi/Protocol/ComponentName2.h>
 #include <ipxe/efi/efi_strings.h>
 #include <ipxe/efi/efi_driver.h>
-#include <config/general.h>
 
 /** @file
  *
@@ -207,7 +207,7 @@ int efi_driver_install ( struct efi_driver *efidrv ) {
 	efi_snprintf ( efidrv->wname,
 		       ( sizeof ( efidrv->wname ) /
 			 sizeof ( efidrv->wname[0] ) ),
-		       PRODUCT_SHORT_NAME "%s%s",
+		       "%s%s%s", product_short_name,
 		       ( efidrv->name ? " - " : "" ),
 		       ( efidrv->name ? efidrv->name : "" ) );
 

src/interface/efi/efi_snp.c

@@ -28,12 +28,12 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <ipxe/iobuf.h>
 #include <ipxe/in.h>
 #include <ipxe/pci.h>
+#include <ipxe/version.h>
 #include <ipxe/efi/efi.h>
 #include <ipxe/efi/efi_pci.h>
 #include <ipxe/efi/efi_driver.h>
 #include <ipxe/efi/efi_strings.h>
 #include <ipxe/efi/efi_snp.h>
-#include <config/general.h>
 #include <usr/autoboot.h>
 
 /** EFI simple network protocol GUID */
@@ -988,12 +988,12 @@ static int efi_snp_probe ( struct net_device *netdev ) {
 	efi_snprintf ( snpdev->driver_name,
 		       ( sizeof ( snpdev->driver_name ) /
 			 sizeof ( snpdev->driver_name[0] ) ),
-		       PRODUCT_SHORT_NAME " %s", netdev->dev->driver_name );
+		       "%s %s", product_short_name, netdev->dev->driver_name );
 	efi_snprintf ( snpdev->controller_name,
 		       ( sizeof ( snpdev->controller_name ) /
 			 sizeof ( snpdev->controller_name[0] ) ),
-		       PRODUCT_SHORT_NAME " %s (%s)",
-		       netdev->name, netdev_addr ( netdev ) );
+		       "%s %s (%s)", product_short_name, netdev->name,
+		       netdev_addr ( netdev ) );
 	snpdev->name2.GetDriverName = efi_snp_get_driver_name;
 	snpdev->name2.GetControllerName = efi_snp_get_controller_name;
 	snpdev->name2.SupportedLanguages = "en";

src/interface/efi/efi_snp_hii.c

@@ -59,7 +59,6 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <ipxe/efi/efi_hii.h>
 #include <ipxe/efi/efi_snp.h>
 #include <ipxe/efi/efi_strings.h>
-#include <config/general.h>
 
 /** EFI configuration access protocol GUID */
 static EFI_GUID efi_hii_config_access_protocol_guid
@@ -162,7 +161,7 @@ efi_snp_hii_package_list ( struct efi_snp_device *snpdev ) {
 	struct device *dev = netdev->dev;
 	struct efi_ifr_builder ifr;
 	EFI_HII_PACKAGE_LIST_HEADER *package;
-	const char *product_name;
+	const char *name;
 	EFI_GUID package_guid;
 	EFI_GUID formset_guid;
 	EFI_GUID varstore_guid;
@@ -173,7 +172,7 @@ efi_snp_hii_package_list ( struct efi_snp_device *snpdev ) {
 	efi_ifr_init ( &ifr );
 
 	/* Determine product name */
-	product_name = ( PRODUCT_NAME[0] ? PRODUCT_NAME : PRODUCT_SHORT_NAME );
+	name = ( product_name[0] ? product_name : product_short_name );
 
 	/* Generate GUIDs */
 	efi_snp_hii_random_guid ( &package_guid );
@@ -181,13 +180,13 @@ efi_snp_hii_package_list ( struct efi_snp_device *snpdev ) {
 	efi_snp_hii_random_guid ( &varstore_guid );
 
 	/* Generate title string (used more than once) */
-	title_id = efi_ifr_string ( &ifr, "%s (%s)", product_name,
+	title_id = efi_ifr_string ( &ifr, "%s (%s)", name,
 				    netdev_addr ( netdev ) );
 
 	/* Generate opcodes */
 	efi_ifr_form_set_op ( &ifr, &formset_guid, title_id,
-			      efi_ifr_string ( &ifr,
-					       "Configure " PRODUCT_SHORT_NAME),
+			      efi_ifr_string ( &ifr, "Configure %s",
+					       product_short_name ),
 			      &efi_hii_platform_setup_formset_guid,
 			      &efi_hii_ibm_ucm_compliant_formset_guid, NULL );
 	efi_ifr_guid_class_op ( &ifr, EFI_NETWORK_DEVICE_CLASS );
@@ -197,7 +196,7 @@ efi_snp_hii_package_list ( struct efi_snp_device *snpdev ) {
 	efi_ifr_text_op ( &ifr,
 			  efi_ifr_string ( &ifr, "Name" ),
 			  efi_ifr_string ( &ifr, "Firmware product name" ),
-			  efi_ifr_string ( &ifr, "%s", product_name ) );
+			  efi_ifr_string ( &ifr, "%s", name ) );
 	efi_ifr_text_op ( &ifr,
 			  efi_ifr_string ( &ifr, "Version" ),
 			  efi_ifr_string ( &ifr, "Firmware version" ),

src/net/tcp/oncrpc.c

@@ -37,7 +37,7 @@
 #include <ipxe/oncrpc_iob.h>
 #include <ipxe/init.h>
 #include <ipxe/settings.h>
-#include <config/general.h>
+#include <ipxe/version.h>
 
 /** @file
  *
@@ -88,7 +88,7 @@ int oncrpc_init_cred_sys ( struct oncrpc_cred_sys *auth_sys ) {
 	fetch_string_setting_copy ( NULL, &hostname_setting,
 	                            &auth_sys->hostname );
 	if ( ! auth_sys->hostname )
-		if ( ! ( auth_sys->hostname = strdup ( PRODUCT_SHORT_NAME ) ) )
+		if ( ! ( auth_sys->hostname = strdup ( product_short_name ) ) )
 			return -ENOMEM;
 
 	auth_sys->uid         = fetch_uintz_setting ( NULL, &uid_setting );

src/usr/autoboot.c

@@ -499,10 +499,10 @@ void ipxe ( struct net_device *netdev ) {
 	 * do so.
 	 *
 	 */
-	printf ( NORMAL "\n\n" PRODUCT_NAME "\n" BOLD "iPXE %s"
+	printf ( NORMAL "\n\n%s\n" BOLD "iPXE %s"
 		 NORMAL " -- Open Source Network Boot Firmware -- "
 		 CYAN "http://ipxe.org" NORMAL "\n"
-		 "Features:", product_version );
+		 "Features:", product_name, product_version );
 	for_each_table_entry ( feature, FEATURES )
 		printf ( " %s", feature->name );
 	printf ( "\n" );