ARM: linker script: factor out TCM bits

This is a plain move with identical results, and therefore
still broken in the XIP case.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Chris Brandt <Chris.Brandt@renesas.com>

arch/arm/kernel/vmlinux.lds.h

@@ -113,3 +113,63 @@
 	__stubs_end = .;						\
 									\
 	PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
+
+#define ARM_TCM								\
+        /*								\
+	 * We align everything to a page boundary so we can		\
+	 * free it after init has commenced and TCM contents have	\
+	 * been copied to its destination.				\
+	 */								\
+	.tcm_start : {							\
+		. = ALIGN(PAGE_SIZE);					\
+		__tcm_start = .;					\
+		__itcm_start = .;					\
+	}								\
+									\
+	/*								\
+	 * Link these to the ITCM RAM					\
+	 *								\
+	 * Put VMA to the TCM address and LMA to the common RAM		\
+	 * and we'll upload the contents from RAM to TCM and free	\
+	 * the used RAM after that.					\
+	 */								\
+	.text_itcm ITCM_OFFSET : AT(__itcm_start)			\
+	{								\
+		__sitcm_text = .;					\
+		*(.tcm.text)						\
+		*(.tcm.rodata)						\
+		. = ALIGN(4);						\
+		__eitcm_text = .;					\
+	}								\
+									\
+	/*								\
+	 * Reset the dot pointer, this is needed to create the		\
+	 * relative __dtcm_start below (to be used as extern in code).	\
+	 */								\
+	. = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm);	\
+									\
+	.dtcm_start : {							\
+		__dtcm_start = .;					\
+	}								\
+									\
+	/*								\
+	 * TODO: add remainder of ITCM as well,				\
+	 * that can be used for data!					\
+	 */								\
+	.data_dtcm DTCM_OFFSET : AT(__dtcm_start)			\
+	{								\
+		. = ALIGN(4);						\
+		__sdtcm_data = .;					\
+		*(.tcm.data)						\
+		. = ALIGN(4);						\
+		__edtcm_data = .;					\
+	}								\
+									\
+	/* Reset the dot pointer or the linker gets confused */		\
+	. = ADDR(.dtcm_start) + SIZEOF(.data_dtcm);			\
+									\
+	/* End marker for freeing TCM copy in linked object */		\
+	.tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){		\
+		. = ALIGN(PAGE_SIZE);					\
+		__tcm_end = .;						\
+	}