[PATCH] FRV: Fujitsu FR-V CPU arch implementation part 1

The attached patches provides part 1 of an architecture implementation
for the Fujitsu FR-V CPU series, configurably as Linux or uClinux.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/frv/Makefile

+#
+# frv/Makefile
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies. Remember to do have actions
+# for "archclean" and "archdep" for cleaning up and making dependencies for
+# this architecture
+#
+# 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) 2003, 2004 Red Hat Inc.
+# - Written by David Howells <dhowells@redhat.com>
+# - Derived from arch/m68knommu/Makefile,
+#	Copyright (c) 1999,2001  D. Jeff Dionne <jeff@lineo.ca>,
+#	Rt-Control Inc. / Lineo, Inc.
+#
+# Copyright (C) 1998,1999  D. Jeff Dionne <jeff@uclinux.org>,
+#                          Kenneth Albanowski <kjahds@kjahds.com>,
+#
+# Based on arch/m68k/Makefile:
+# Copyright (C) 1994 by Hamish Macdonald
+#
+
+CCSPECS	:= $(shell $(CC) -v 2>&1 | grep "^Reading specs from " | head -1 | cut -c20-)
+CCDIR	:= $(strip $(patsubst %/specs,%,$(CCSPECS)))
+CPUCLASS := fr400
+
+# test for cross compiling
+COMPILE_ARCH = $(shell uname -m)
+
+ifdef CONFIG_MMU
+UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
+else
+UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
+endif
+
+ARCHMODFLAGS	+= -G0 -mlong-calls
+
+ifdef CONFIG_GPREL_DATA_8
+CFLAGS		+= -G8
+else
+ifdef CONFIG_GPREL_DATA_4
+CFLAGS		+= -G4
+else
+ifdef CONFIG_GPREL_DATA_NONE
+CFLAGS		+= -G0
+endif
+endif
+endif
+
+#LDFLAGS_vmlinux	:= -Map linkmap.txt
+
+ifdef CONFIG_GC_SECTIONS
+CFLAGS		+= -ffunction-sections -fdata-sections
+LINKFLAGS	+= --gc-sections
+endif
+
+ifndef CONFIG_FRAME_POINTER
+CFLAGS		+= -mno-linked-fp
+endif
+
+ifdef CONFIG_CPU_FR451_COMPILE
+CFLAGS		+= -mcpu=fr450
+AFLAGS		+= -mcpu=fr450
+ASFLAGS		+= -mcpu=fr450
+else
+ifdef CONFIG_CPU_FR551_COMPILE
+CFLAGS		+= -mcpu=fr550
+AFLAGS		+= -mcpu=fr550
+ASFLAGS		+= -mcpu=fr550
+else
+CFLAGS		+= -mcpu=fr400
+AFLAGS		+= -mcpu=fr400
+ASFLAGS		+= -mcpu=fr400
+endif
+endif
+
+# pretend the kernel is going to run on an FR400 with no media-fp unit
+# - reserve CC3 for use with atomic ops
+# - all the extra registers are dealt with only at context switch time
+CFLAGS		+= -mno-fdpic -mgpr-32 -msoft-float -mno-media
+CFLAGS		+= -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15
+AFLAGS		+= -mno-fdpic
+ASFLAGS		+= -mno-fdpic
+
+# make sure the .S files get compiled with debug info
+# and disable optimisations that are unhelpful whilst debugging
+ifdef CONFIG_DEBUG_INFO
+CFLAGS		+= -O1
+AFLAGS		+= -Wa,--gdwarf2
+ASFLAGS		+= -Wa,--gdwarf2
+endif
+
+head-y		:= arch/frv/kernel/head.o arch/frv/kernel/init_task.o
+
+core-y		+= arch/frv/kernel/ arch/frv/mm/
+libs-y		+= arch/frv/lib/
+
+core-$(CONFIG_MB93090_MB00)	+= arch/frv/mb93090-mb00/
+
+all: Image
+
+Image: vmlinux
+	$(Q)$(MAKE) $(build)=arch/frv/boot $@
+
+bootstrap:
+	$(Q)$(MAKEBOOT) bootstrap
+
+archmrproper:
+	$(Q)$(MAKE) -C arch/frv/boot mrproper
+
+archclean:
+	$(Q)$(MAKE) -C arch/frv/boot clean
+
+archdep: scripts/mkdep symlinks
+	$(Q)$(MAKE) -C arch/frv/boot dep

arch/frv/boot/Makefile

+#
+# arch/arm/boot/Makefile
+#
+# 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) 1995-2000 Russell King
+#
+
+SYSTEM	=$(TOPDIR)/$(LINUX)
+
+ZTEXTADDR	 = 0x02080000
+PARAMS_PHYS	 = 0x0207c000
+INITRD_PHYS	 = 0x02180000
+INITRD_VIRT	 = 0x02180000
+
+#
+# If you don't define ZRELADDR above,
+# then it defaults to ZTEXTADDR
+#
+ifeq ($(ZRELADDR),)
+ZRELADDR	= $(ZTEXTADDR)
+endif
+
+export	SYSTEM ZTEXTADDR ZBSSADDR ZRELADDR INITRD_PHYS INITRD_VIRT PARAMS_PHYS
+
+Image: $(obj)/Image
+
+targets: $(obj)/Image
+
+$(obj)/Image: vmlinux FORCE
+	$(OBJCOPY) -O binary -R .note -R .comment -S vmlinux $@
+
+#$(obj)/Image:	$(CONFIGURE) $(SYSTEM)
+#	$(OBJCOPY) -O binary -R .note -R .comment -g -S $(SYSTEM) $@
+
+bzImage: zImage
+
+zImage:	$(CONFIGURE) compressed/$(LINUX)
+	$(OBJCOPY) -O binary -R .note -R .comment -S compressed/$(LINUX) $@
+
+bootpImage: bootp/bootp
+	$(OBJCOPY) -O binary -R .note -R .comment -S bootp/bootp $@
+
+compressed/$(LINUX): $(TOPDIR)/$(LINUX) dep
+	@$(MAKE) -C compressed $(LINUX)
+
+bootp/bootp: zImage initrd
+	@$(MAKE) -C bootp bootp
+
+initrd:
+	@test "$(INITRD_VIRT)" != "" || (echo This architecture does not support INITRD; exit -1)
+	@test "$(INITRD)" != "" || (echo You must specify INITRD; exit -1)
+
+#
+# installation
+#
+install: $(CONFIGURE) Image
+	sh ./install.sh $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) Image $(TOPDIR)/System.map "$(INSTALL_PATH)"
+
+zinstall: $(CONFIGURE) zImage
+	sh ./install.sh $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) zImage $(TOPDIR)/System.map "$(INSTALL_PATH)"
+
+#
+# miscellany
+#
+mrproper clean:
+	$(RM) Image zImage bootpImage
+#	@$(MAKE) -C compressed clean
+#	@$(MAKE) -C bootp clean
+
+dep:

arch/frv/kernel/vmlinux.lds.S

+/* ld script to make FRV Linux kernel -*- c -*-
+ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
+ */
+OUTPUT_FORMAT("elf32-frv", "elf32-frv", "elf32-frv")
+OUTPUT_ARCH(frv)
+ENTRY(_start)
+
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
+
+jiffies = jiffies_64 + 4;
+
+__page_offset = 0xc0000000;		/* start of area covered by struct pages */
+__kernel_image_start = __page_offset;	/* address at which kernel image resides */
+
+SECTIONS
+{
+  . = __kernel_image_start;
+
+  /* discardable initialisation code and data */
+  . = ALIGN(PAGE_SIZE);			/* Init code and data */
+  __init_begin = .;
+
+  _sinittext = .;
+  .init.text : {
+	*(.text.head)
+#ifndef CONFIG_DEBUG_INFO
+	*(.init.text)
+	*(.exit.text)
+	*(.exit.data)
+	*(.exitcall.exit)
+#endif
+  }
+  _einittext = .;
+  .init.data : { *(.init.data) }
+
+  . = ALIGN(8);
+  __setup_start = .;
+  .setup.init : { KEEP(*(.init.setup)) }
+  __setup_end = .;
+
+  __initcall_start = .;
+  .initcall.init : {
+	*(.initcall1.init)
+	*(.initcall2.init)
+	*(.initcall3.init)
+	*(.initcall4.init)
+	*(.initcall5.init)
+	*(.initcall6.init)
+	*(.initcall7.init)
+  }
+  __initcall_end = .;
+  __con_initcall_start = .;
+  .con_initcall.init : { *(.con_initcall.init) }
+  __con_initcall_end = .;
+  SECURITY_INIT
+  . = ALIGN(4);
+  __alt_instructions = .;
+  .altinstructions : { *(.altinstructions) }
+  __alt_instructions_end = .;
+ .altinstr_replacement : { *(.altinstr_replacement) }
+
+  __per_cpu_start = .;
+  .data.percpu  : { *(.data.percpu) }
+  __per_cpu_end = .;
+
+  . = ALIGN(4096);
+  __initramfs_start = .;
+  .init.ramfs : { *(.init.ramfs) }
+  __initramfs_end = .;
+
+  . = ALIGN(THREAD_SIZE);
+  __init_end = .;
+
+  /* put sections together that have massive alignment issues */
+  . = ALIGN(THREAD_SIZE);
+  .data.init_task : {
+	  /* init task record & stack */
+	  *(.data.init_task)
+  }
+
+  .trap : {
+	/* trap table management - read entry-table.S before modifying */
+	. = ALIGN(8192);
+	__trap_tables = .;
+	*(.trap.user)
+	*(.trap.kernel)
+	. = ALIGN(4096);
+	*(.trap.break)
+  }
+
+  . = ALIGN(4096);
+  .data.page_aligned : { *(.data.idt) }
+
+  . = ALIGN(L1_CACHE_BYTES);
+  .data.cacheline_aligned : { *(.data.cacheline_aligned) }
+
+  /* Text and read-only data */
+  . = ALIGN(4);
+  _text = .;
+  _stext = .;
+  .text : {
+	*(
+		.text.start .text .text.*
+#ifdef CONFIG_DEBUG_INFO
+	.init.text
+	.exit.text
+	.exitcall.exit
+#endif
+	)
+	SCHED_TEXT
+	*(.fixup)
+	*(.gnu.warning)
+	*(.exitcall.exit)
+	} = 0x9090
+
+  _etext = .;			/* End of text section */
+
+  RODATA
+
+  .rodata : {
+	*(.trap.vector)
+
+	/* this clause must not be modified - the ordering and adjacency are imperative */
+	__trap_fixup_tables = .;
+	*(.trap.fixup.user .trap.fixup.kernel)
+
+	}
+
+  . = ALIGN(8);		/* Exception table */
+  __start___ex_table = .;
+  __ex_table : { KEEP(*(__ex_table)) }
+  __stop___ex_table = .;
+
+  _sdata = .;
+  .data : {			/* Data */
+	*(.data .data.*)
+	*(.exit.data)
+	CONSTRUCTORS
+	}
+
+  _edata = .;			/* End of data section */
+
+  /* GP section */
+  . = ALIGN(L1_CACHE_BYTES);
+  _gp = . + 2048;
+  PROVIDE (gp = _gp);
+
+  .sdata : { *(.sdata .sdata.*) }
+
+  /* BSS */
+  . = ALIGN(L1_CACHE_BYTES);
+  __bss_start = .;
+
+  .sbss		: { *(.sbss .sbss.*) }
+  .bss		: { *(.bss .bss.*) }
+  .bss.stack	: { *(.bss) }
+
+  __bss_stop = .;
+  _end = . ;
+  . = ALIGN(PAGE_SIZE);
+  __kernel_image_end = .;
+
+  /* Stabs debugging sections.  */
+  .stab 0 : { *(.stab) }
+  .stabstr 0 : { *(.stabstr) }
+  .stab.excl 0 : { *(.stab.excl) }
+  .stab.exclstr 0 : { *(.stab.exclstr) }
+  .stab.index 0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+
+  .debug_line		0 : { *(.debug_line) }
+  .debug_info		0 : { *(.debug_info) }
+  .debug_abbrev		0 : { *(.debug_abbrev) }
+  .debug_aranges	0 : { *(.debug_aranges) }
+  .debug_frame		0 : { *(.debug_frame) }
+  .debug_pubnames	0 : { *(.debug_pubnames) }
+  .debug_str		0 : { *(.debug_str) }
+  .debug_ranges		0 : { *(.debug_ranges) }
+
+  .comment 0 : { *(.comment) }
+}
+
+__kernel_image_size_no_bss = __bss_start - __kernel_image_start;