microblaze: Add SPL support
Add support for U-BOOT SPL. NOR and RAM mode are supported.
There are 3 images in NOR flash. u-boot.img, dtb and kernel.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/microblaze/cpu/u-boot-spl.lds b/arch/microblaze/cpu/u-boot-spl.lds
new file mode 100644
index 0000000..96353cd
--- /dev/null
+++ b/arch/microblaze/cpu/u-boot-spl.lds
@@ -0,0 +1,57 @@
+/*
+ * (C) Copyright 2013 - 2014 Xilinx, Inc
+ *
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm-offsets.h>
+
+OUTPUT_ARCH(microblaze)
+ENTRY(_start)
+
+SECTIONS
+{
+ .text ALIGN(0x4):
+ {
+ __text_start = .;
+ arch/microblaze/cpu/start.o (.text)
+ *(.text)
+ *(.text.*)
+ __text_end = .;
+ }
+
+ .rodata ALIGN(0x4):
+ {
+ __rodata_start = .;
+ *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+ __rodata_end = .;
+ }
+
+ .data ALIGN(0x4):
+ {
+ __data_start = .;
+ *(.data)
+ *(.data.*)
+ __data_end = .;
+ }
+
+ .bss ALIGN(0x4):
+ {
+ __bss_start = .;
+ *(.sbss)
+ *(.scommon)
+ *(.bss)
+ *(.bss.*)
+ *(COMMON)
+ . = ALIGN(4);
+ __bss_end = .;
+ }
+ __end = . ;
+}
+
+#if defined(CONFIG_SPL_MAX_FOOTPRINT)
+ASSERT(__end - _start < (CONFIG_SPL_MAX_FOOTPRINT), \
+ "SPL image plus BSS too big");
+#endif