xtensa: move headers files to arch/xtensa/include

Move all header files for xtensa to arch/xtensa/include and platform and
variant header files to the appropriate arch/xtensa/platforms/ and
arch/xtensa/variants/ directories.

Moving the files gets also rid of all uses of symlinks in the Makefile.

This has been completed already for the majority of the architectures
and xtensa is one out of six missing.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Chris Zankel <chris@zankel.net>

120 files changed, 9350 insertions, 32 deletions

diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 015b6b2a26b9..1da55fe4beff 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -33,6 +33,15 @@ KBUILD_CFLAGS += -ffreestanding
 
 KBUILD_CFLAGS += -pipe -mlongcalls
 
+vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
+plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
+
+ifeq ($(KBUILD_SRC),)
+KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
+else
+KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
+endif
+
 KBUILD_DEFCONFIG := iss_defconfig
 
 # ramdisk/initrd support
@@ -66,21 +75,6 @@ libs-y		+= arch/xtensa/lib/ $(LIBGCC)
 
 boot		:= arch/xtensa/boot
 
-archinc		:= include/asm-xtensa
-
-archprepare: $(archinc)/.platform
-
-# Update processor variant and platform symlinks if something which affects
-# them changed.
-
-$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
-	@echo '  SYMLINK $(archinc)/variant -> $(archinc)/variant-$(VARIANT)'
-	$(Q)mkdir -p $(archinc)
-	$(Q)ln -fsn $(srctree)/$(archinc)/variant-$(VARIANT) $(archinc)/variant
-	@echo '  SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
-	$(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
-	@touch $@
-
 
 all: zImage
 
@@ -89,10 +83,6 @@ bzImage : zImage
 zImage zImage.initrd: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
-CLEAN_FILES	+= arch/xtensa/vmlinux.lds                      \
-		   $(archinc)/platform $(archinc)/variant	\
-		   $(archinc)/.platform
-
 define archhelp
   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
 endef
diff --git a/arch/xtensa/boot/boot-elf/boot.lds.S b/arch/xtensa/boot/boot-elf/boot.lds.S
index 849dfcafd518..4e53b74dc44b 100644
--- a/arch/xtensa/boot/boot-elf/boot.lds.S
+++ b/arch/xtensa/boot/boot-elf/boot.lds.S
@@ -1,4 +1,4 @@
-#include <asm/variant/core.h>
+#include <variant/core.h>
 OUTPUT_ARCH(xtensa)
 ENTRY(_ResetVector)
 
diff --git a/arch/xtensa/boot/boot-redboot/bootstrap.S b/arch/xtensa/boot/boot-redboot/bootstrap.S
index 84848123e2a8..5582e8cfac8f 100644
--- a/arch/xtensa/boot/boot-redboot/bootstrap.S
+++ b/arch/xtensa/boot/boot-redboot/bootstrap.S
@@ -1,4 +1,4 @@
-#include <asm/variant/core.h>
+#include <variant/core.h>
 #include <asm/regs.h>
 #include <asm/asmmacro.h>
 #include <asm/cacheasm.h>
diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild
new file mode 100644
index 000000000000..c68e1680da01
--- /dev/null
+++ b/arch/xtensa/include/asm/Kbuild
@@ -0,0 +1 @@
+include include/asm-generic/Kbuild.asm
diff --git a/arch/xtensa/include/asm/asmmacro.h b/arch/xtensa/include/asm/asmmacro.h
new file mode 100644
index 000000000000..755320f6e0bc
--- /dev/null
+++ b/arch/xtensa/include/asm/asmmacro.h
@@ -0,0 +1,153 @@
+/*
+ * include/asm-xtensa/asmmacro.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ASMMACRO_H
+#define _XTENSA_ASMMACRO_H
+
+#include <variant/core.h>
+
+/*
+ * Some little helpers for loops. Use zero-overhead-loops
+ * where applicable and if supported by the processor.
+ *
+ * __loopi ar, at, size, inc
+ *         ar	register initialized with the start address
+ *	   at	scratch register used by macro
+ *	   size	size immediate value
+ *	   inc	increment
+ *
+ * __loops ar, as, at, inc_log2[, mask_log2][, cond][, ncond]
+ *	   ar	register initialized with the start address
+ *	   as	register initialized with the size
+ *	   at	scratch register use by macro
+ *	   inc_log2	increment [in log2]
+ *	   mask_log2	mask [in log2]
+ *	   cond		true condition (used in loop'cond')
+ *	   ncond	false condition (used in b'ncond')
+ *
+ * __loop  as
+ *	   restart loop. 'as' register must not have been modified!
+ *
+ * __endla ar, at, incr
+ *	   ar	start address (modified)
+ *	   as	scratch register used by macro
+ *	   inc	increment
+ */
+
+/*
+ * loop for given size as immediate
+ */
+
+	.macro	__loopi ar, at, size, incr
+
+#if XCHAL_HAVE_LOOPS
+		movi	\at, ((\size + \incr - 1) / (\incr))
+		loop	\at, 99f
+#else
+		addi	\at, \ar, \size
+		98:
+#endif
+
+	.endm
+