x86: Move do_go_exec() out of board.c

--
Changes for v2:
 - None

arch/x86/lib/Makefile

@@ -32,6 +32,7 @@ SOBJS-$(CONFIG_SYS_X86_REALMODE)	+= realmode_switch.o
 COBJS-$(CONFIG_SYS_PC_BIOS)	+= bios_setup.o
 COBJS-y	+= board.o
 COBJS-y	+= bootm.o
+COBJS-y	+= cmd_boot.o
 COBJS-y	+= gcc.o
 COBJS-y	+= interrupts.o
 COBJS-$(CONFIG_SYS_PCAT_INTERRUPTS) += pcat_interrupts.o

arch/x86/lib/board.c

@@ -487,33 +487,6 @@ void hang(void)
 		;
 }
 
-unsigned long do_go_exec(ulong (*entry)(int, char * const []),
-			 int argc, char * const argv[])
-{
-	unsigned long ret = 0;
-	char **argv_tmp;
-
-	/*
-	 * x86 does not use a dedicated register to pass the pointer to
-	 * the global_data, so it is instead passed as argv[-1]. By using
-	 * argv[-1], the called 'Application' can use the contents of
-	 * argv natively. However, to safely use argv[-1] a new copy of
-	 * argv is needed with the extra element
-	 */
-	argv_tmp = malloc(sizeof(char *) * (argc + 1));
-
-	if (argv_tmp) {
-		argv_tmp[0] = (char *)gd;
-
-		memcpy(&argv_tmp[1], argv, (size_t)(sizeof(char *) * argc));
-
-		ret = (entry) (argc, &argv_tmp[1]);
-		free(argv_tmp);
-	}
-
-	return ret;
-}
-
 void setup_pcat_compatibility(void)
 	__attribute__((weak, alias("__setup_pcat_compatibility")));
 

arch/x86/lib/cmd_boot.c

@@ -0,0 +1,64 @@
+/*
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
+ *
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <asm/u-boot-x86.h>
+
+unsigned long do_go_exec(ulong (*entry)(int, char * const []),
+			 int argc, char * const argv[])
+{
+	unsigned long ret = 0;
+	char **argv_tmp;
+
+	/*
+	 * x86 does not use a dedicated register to pass the pointer to
+	 * the global_data, so it is instead passed as argv[-1]. By using
+	 * argv[-1], the called 'Application' can use the contents of
+	 * argv natively. However, to safely use argv[-1] a new copy of
+	 * argv is needed with the extra element
+	 */
+	argv_tmp = malloc(sizeof(char *) * (argc + 1));
+
+	if (argv_tmp) {
+		argv_tmp[0] = (char *)gd;
+
+		memcpy(&argv_tmp[1], argv, (size_t)(sizeof(char *) * argc));
+
+		ret = (entry) (argc, &argv_tmp[1]);
+		free(argv_tmp);
+	}
+
+	return ret;
+}