mpc83xx: fix out-of-tree mpc8315 nand build

commit 2e95004deb6e33e33bf1b8a92a38cd2115bac4c2 "mpc83xx: Add NAND boot support
for MPC8315E-RDB boards" symlinked nand_spl/board/freescale/mpc8315erdb to
mpc8313erdb in order to not duplicate code.

Since the main makefile builds nand_spl/board/$(BOARDDIR) (which makes sense),
and the board Makefile and linker script are the only two necessary files
to enable out-of-tree building, and other boards have duplicated nand makefiles
(e.g. 8536ds & 8569mds), it only seems prudent to copy these two files in the
name of the 8315 too.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Wolfgang Denk <wd@denx.de>

Makefile

@@ -2272,9 +2272,6 @@ MPC8313ERDB_NAND_66_config: unconfig
 
 MPC8315ERDB_NAND_config \
 MPC8315ERDB_config: unconfig
-	@if [ "$(findstring _NAND_,$@)" ] ; then \
-		ln -sf mpc8313erdb nand_spl/board/freescale/mpc8315erdb ; \
-	fi ;
 	@$(MKCONFIG) -t $(@:_config=) MPC8315ERDB ppc mpc83xx mpc8315erdb freescale
 
 MPC8323ERDB_config:	unconfig

nand_spl/board/freescale/mpc8315erdb/Makefile

@@ -0,0 +1,108 @@
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@denx.de.
+# (C) Copyright 2008 Freescale Semiconductor
+#
+# 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
+#
+
+NAND_SPL := y
+TEXT_BASE := 0xfff00000
+PAD_TO := 0xfff04000
+
+include $(TOPDIR)/config.mk
+
+LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
+LDFLAGS	= -Bstatic -T $(nandobj)u-boot.lds -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
+AFLAGS	+= -DCONFIG_NAND_SPL
+CFLAGS	+= -DCONFIG_NAND_SPL
+
+SOBJS	= start.o ticks.o
+COBJS	= nand_boot_fsl_elbc.o $(BOARD).o sdram.o ns16550.o nand_init.o \
+	  time.o cache.o
+
+SRCS	:= $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c))
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+__OBJS	:= $(SOBJS) $(COBJS)
+LNDIR	:= $(OBJTREE)/nand_spl/board/$(BOARDDIR)
+
+nandobj	:= $(OBJTREE)/nand_spl/
+
+ALL	= $(nandobj)u-boot-spl $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
+
+all:	$(obj).depend $(ALL)
+
+$(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
+	$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(PAD_TO) -O binary $< $@
+
+$(nandobj)u-boot-spl.bin:	$(nandobj)u-boot-spl
+	$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
+
+$(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
+	cd $(LNDIR) && $(LD) $(LDFLAGS) $(__OBJS) \
+		-Map $(nandobj)u-boot-spl.map \
+		-o $(nandobj)u-boot-spl
+
+$(nandobj)u-boot.lds: $(LDSCRIPT)
+	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+
+# create symbolic links for common files
+
+$(obj)start.S:
+	ln -sf $(SRCTREE)/cpu/mpc83xx/start.S $(obj)start.S
+
+$(obj)nand_boot_fsl_elbc.c:
+	ln -sf $(SRCTREE)/nand_spl/nand_boot_fsl_elbc.c \
+	       $(obj)nand_boot_fsl_elbc.c
+
+$(obj)sdram.c:
+	ln -sf $(SRCTREE)/board/$(BOARDDIR)/sdram.c $(obj)sdram.c
+
+$(obj)$(BOARD).c:
+	ln -sf $(SRCTREE)/board/$(BOARDDIR)/$(BOARD).c $(obj)$(BOARD).c
+
+$(obj)ns16550.c:
+	ln -sf $(SRCTREE)/drivers/serial/ns16550.c $(obj)ns16550.c
+
+$(obj)nand_init.c:
+	ln -sf $(SRCTREE)/cpu/mpc83xx/nand_init.c $(obj)nand_init.c
+
+$(obj)cache.c:
+	ln -sf $(SRCTREE)/lib_ppc/cache.c $(obj)cache.c
+
+$(obj)time.c:
+	ln -sf $(SRCTREE)/lib_ppc/time.c $(obj)time.c
+
+$(obj)ticks.S:
+	ln -sf $(SRCTREE)/lib_ppc/ticks.S $(obj)ticks.S
+
+#########################################################################
+
+$(obj)%.o:	$(obj)%.S
+	$(CC) $(AFLAGS) -c -o $@ $<
+
+$(obj)%.o:	$(obj)%.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

nand_spl/board/freescale/mpc8315erdb/u-boot.lds

@@ -0,0 +1,52 @@
+/*
+ * (C) Copyright 2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * 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
+ */
+
+OUTPUT_ARCH(powerpc)
+SECTIONS
+{
+	. = 0xfff00000;
+	.text : {
+		*(.text*)
+		. = ALIGN(16);
+		*(.eh_frame)
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+	}
+
+	. = ALIGN(8);
+	.data : {
+		*(.data*)
+		*(.sdata*)
+		_GOT2_TABLE_ = .;
+		*(.got2)
+		__got2_entries = (. - _GOT2_TABLE_) >> 2;
+	}
+
+	. = ALIGN(8);
+	__bss_start = .;
+	.bss (NOLOAD) : { *(.*bss) }
+	_end = .;
+}
+ENTRY(_start)
+ASSERT(_end <= 0xfff01000, "NAND bootstrap too big");