ppc4xx: Add SPL support

This patch adds SPL booting support (NOR flash) for the
PPC4xx platforms.

This SPL booting (Falcon mode) will be used by the upcoming
lcd4_lwmon5 board port (lwmon5 variant).

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 74 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds b/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds
new file mode 100644
index 0000000000..ae1df1719a
--- /dev/null
+++ b/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2012-2013 Stefan Roese <sr@denx.de>
+ *
+ * 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
+ */
+
+MEMORY
+{
+	sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR,
+		LENGTH = CONFIG_SPL_BSS_MAX_SIZE
+	flash : ORIGIN = CONFIG_SPL_TEXT_BASE,
+		LENGTH = CONFIG_SYS_SPL_MAX_LEN
+}
+
+OUTPUT_ARCH(powerpc)
+ENTRY(_start)
+SECTIONS
+{
+#ifdef CONFIG_440
+	.bootpg 0xfffff000 :
+	{
+		arch/powerpc/cpu/ppc4xx/start.o	(.bootpg)
+
+		/*
+		 * PPC440 board need a board specific object with the
+		 * TLB definitions. This needs to get included right after
+		 * start.o, since the first shadow TLB only covers 4k
+		 * of address space.
+		 */
+		CONFIG_BOARDDIR/init.o	(.bootpg)
+	} > flash
+#endif
+
+	.resetvec 0xFFFFFFFC :
+	{
+		KEEP(*(.resetvec))
+	} > flash
+
+	.text :
+	{
+		__start = .;
+		arch/powerpc/cpu/ppc4xx/start.o	(.text)
+		CONFIG_BOARDDIR/init.o	(.text)
+		*(.text*)
+	} > flash
+
+	. = ALIGN(4);
+	.data : { *(SORT_BY_ALIGNMENT(.data*)) } > flash
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } > flash
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start = .;
+		*(.bss*)
+		. = ALIGN(4);
+		__bss_end = .;
+	} > sdram
+}