Merge tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux

Pull Xtensa patchset from Chris Zankel:
 "The Xtensa tree has been broken for some time now, and this patchset
  brings it back to life.  It has been part of the linux-next tree for
  some time.

  Most changes are inside the xtensa subdirectory; the other changes
  mostly add another rule to already existing #ifdefs to exclude Xtensa,
  where required.  The only 'common' change is to add two more sections
  ('.xt.prop' and '.xt.lit') to the white list in modpost."

* tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux: (27 commits)
  xtensa: Setup CROSS_COMPILE at the top
  xtensa: drop CONFIG_EMBEDDED_RAMDISK
  xtensa: fix TIOCGSERIAL and TIOCSSERIAL definitions
  xtensa: provide dummy gcc intrinsics
  xtensa: add missing symbol exports
  parport: disable for xtensa arch
  xtensa: rename MISC SR definition to avoid name clashes
  hisax: disable build for big-endian xtensa
  xtensa: fix CODA build
  xtensa: fix parallel make
  xtensa: ISS: drop unused io.c
  xtensa: ISS: exit simulator in case of halt or poweroff
  xtensa: ISS: change keyboard polling rate
  xtensa: ISS: add platform_pcibios_init
  xtensa: ISS: add dummy serial.h for ISS platform
  xtensa: change default platform clock frequency to 10MHz
  xtensa: add ARCH_WANT_OPTIONAL_GPIOLIB to xtensa config
  xtensa: set NO_IOPORT to 'n' by default
  xtensa: adopt generic io routines
  xtensa: fix ioremap
  ...

Author: torvalds

MAINTAINERS

@@ -7170,6 +7170,8 @@ F:	drivers/char/tlclk.c
 
 TENSILICA XTENSA PORT (xtensa)
 M:	Chris Zankel <chris@zankel.net>
+M:	Max Filippov <jcmvbkbc@gmail.com>
+L:	linux-xtensa@linux-xtensa.org
 S:	Maintained
 F:	arch/xtensa/
 

arch/xtensa/Kconfig

@@ -11,6 +11,9 @@ config XTENSA
 	select HAVE_GENERIC_HARDIRQS
 	select GENERIC_IRQ_SHOW
 	select GENERIC_CPU_DEVICES
+	select MODULES_USE_ELF_RELA
+	select GENERIC_PCI_IOMAP
+	select ARCH_WANT_OPTIONAL_GPIOLIB
 	help
 	  Xtensa processors are 32-bit RISC machines designed by Tensilica
 	  primarily for embedded systems.  These processors are both
@@ -35,7 +38,7 @@ config ARCH_HAS_ILOG2_U64
 	def_bool n
 
 config NO_IOPORT
-	def_bool y
+	def_bool n
 
 config HZ
 	int
@@ -142,6 +145,7 @@ config XTENSA_PLATFORM_XT2000
 config XTENSA_PLATFORM_S6105
 	bool "S6105"
 	select SERIAL_CONSOLE
+	select NO_IOPORT
 
 endchoice
 
@@ -205,23 +209,6 @@ source "drivers/Kconfig"
 
 source "fs/Kconfig"
 
-menu "Xtensa initrd options"
-	depends on BLK_DEV_INITRD
-
-config EMBEDDED_RAMDISK
-	bool "Embed root filesystem ramdisk into the kernel"
-
-config EMBEDDED_RAMDISK_IMAGE
-	string "Filename of gzipped ramdisk image"
-	depends on EMBEDDED_RAMDISK
-	default "ramdisk.gz"
-	help
-	  This is the filename of the ramdisk image to be built into the
-	  kernel.  Relative pathnames are relative to arch/xtensa/boot/ramdisk/.
-	  The ramdisk image is not part of the kernel distribution; you must
-	  provide one yourself.
-endmenu
-
 source "arch/xtensa/Kconfig.debug"
 
 source "security/Kconfig"

arch/xtensa/Makefile

@@ -21,6 +21,18 @@ variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)	:= custom
 VARIANT = $(variant-y)
 export VARIANT
 
+# Test for cross compiling
+
+ifneq ($(VARIANT),)
+  COMPILE_ARCH = $(shell uname -m)
+
+  ifneq ($(COMPILE_ARCH), xtensa)
+    ifndef CROSS_COMPILE
+      CROSS_COMPILE = xtensa_$(VARIANT)-
+    endif
+  endif
+endif
+
 # Platform configuration
 
 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)	:= xt2000
@@ -31,7 +43,7 @@ PLATFORM = $(platform-y)
 export PLATFORM
 
 # temporarily until string.h is fixed
-KBUILD_CFLAGS += -ffreestanding
+KBUILD_CFLAGS += -ffreestanding -D__linux__
 
 KBUILD_CFLAGS += -pipe -mlongcalls
 
@@ -48,24 +60,6 @@ endif
 
 KBUILD_DEFCONFIG := iss_defconfig
 
-# ramdisk/initrd support
-# You need a compressed ramdisk image, named ramdisk.gz in
-# arch/xtensa/boot/ramdisk
-
-core-$(CONFIG_EMBEDDED_RAMDISK)	+= arch/xtensa/boot/ramdisk/
-
-# Test for cross compiling
-
-ifneq ($(VARIANT),)
-  COMPILE_ARCH = $(shell uname -m)
-
-  ifneq ($(COMPILE_ARCH), xtensa)
-    ifndef CROSS_COMPILE
-      CROSS_COMPILE = xtensa_$(VARIANT)-
-    endif
-  endif
-endif
-
 # Only build variant and/or platform if it includes a Makefile
 
 buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
@@ -87,7 +81,7 @@ all: zImage
 
 bzImage : zImage
 
-zImage zImage.initrd: vmlinux
+zImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
 define archhelp

arch/xtensa/boot/Makefile

@@ -25,7 +25,7 @@ bootdir-$(CONFIG_XTENSA_PLATFORM_ISS)	 += boot-elf
 bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf
 
 
-zImage zImage.initrd Image Image.initrd: $(bootdir-y)
+zImage Image: $(bootdir-y)
 
 $(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \
 	      $(addprefix $(obj)/,$(host-progs))

arch/xtensa/boot/boot-elf/Makefile

@@ -20,34 +20,18 @@ boot-y		:= bootstrap.o
 
 OBJS		:= $(addprefix $(obj)/,$(boot-y))
 
-Image:	vmlinux $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
+vmlinux.tmp: vmlinux
 	$(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
-		vmlinux vmlinux.tmp
-	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
-		--add-section image=vmlinux.tmp \
-		--set-section-flags image=contents,alloc,load,load,data \
-		$(OBJS) $@.tmp
-	$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
-		-T arch/$(ARCH)/boot/boot-elf/boot.lds \
-		-o arch/$(ARCH)/boot/$@.elf $@.tmp
-	rm -f $@.tmp vmlinux.tmp
+		$^ $@
 
-Image.initrd:	vmlinux $(OBJS)
-	$(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
-		--add-section .initrd=arch/$(ARCH)/boot/ramdisk \
-		--set-section-flags .initrd=contents,alloc,load,load,data \
-		vmlinux vmlinux.tmp
+Image:	vmlinux.tmp $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
 	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
 		--add-section image=vmlinux.tmp \
 		--set-section-flags image=contents,alloc,load,load,data \
 		$(OBJS) $@.tmp
 	$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
-		-T $(srctree)/arch/$(ARCH)/boot/boot-elf/boot.ld \
+		-T arch/$(ARCH)/boot/boot-elf/boot.lds \
 		-o arch/$(ARCH)/boot/$@.elf $@.tmp
-	rm -f $@.tmp vmlinux.tmp
-
 
 zImage:	Image
 
-zImage.initrd:	Image.initrd
-

arch/xtensa/boot/boot-elf/boot.lds.S

@@ -33,13 +33,6 @@ SECTIONS
 
 	__reloc_end = . ;
 
-	.initrd ALIGN(0x10) :
-	{
-		boot_initrd_start = . ;
-		*(.initrd)
-		boot_initrd_end = .;
-	}
-
 	. = ALIGN(0x10);
 	__image_load = . ;
 	.image 0xd0001000:

arch/xtensa/boot/boot-redboot/Makefile

@@ -21,15 +21,17 @@ LIBS	:= arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a
 
 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
-zImage: vmlinux $(OBJS) $(LIBS)
+vmlinux.tmp: vmlinux
 	$(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
-		vmlinux vmlinux.tmp
-	gzip -vf9 vmlinux.tmp
+		$^ $@
+
+vmlinux.tmp.gz: vmlinux.tmp
+	$(GZIP) $(GZIP_FLAGS) $^ > $@
+
+zImage: vmlinux.tmp.gz $(OBJS) $(LIBS)
 	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
 		--add-section image=vmlinux.tmp.gz \
 		--set-section-flags image=contents,alloc,load,load,data \
 		$(OBJS) $@.tmp
 	$(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)
 	$(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/$@.redboot
-	rm -f $@.tmp $@.elf vmlinux.tmp.gz
-

arch/xtensa/boot/boot-redboot/boot.ld

@@ -31,13 +31,6 @@ SECTIONS
 
 	__reloc_end = . ;
 
-	.initrd ALIGN(0x10) :
-	{
-		boot_initrd_start = . ;
-		*(.initrd)
-		boot_initrd_end = .;
-	}
-
 	. = ALIGN(0x10);
 	__image_load = . ;
 	.image 0xd0001000: AT(__image_load)

arch/xtensa/boot/boot-redboot/bootstrap.S

@@ -226,17 +226,7 @@ _reloc:
 
 	isync
 
-	movi	a5, __start
-	movi	a3, boot_initrd_start
-	movi	a4, boot_initrd_end
-	sub	a3, a3, a5
-	sub	a4, a4, a5
-	add	a3, a0, a3
-	add	a4, a0, a4
-
 	# a2  Boot parameter list
-	# a3  initrd_start (virtual load address)
-	# a4  initrd_end   (virtual load address)
 
 	movi	a0, _image_start
 	jx	a0