6 part

arch/score/Kconfig

@@ -0,0 +1,106 @@
+menu "Machine selection"
+
+config SCORE
+       def_bool y
+       select GENERIC_IRQ_SHOW
+       select GENERIC_IOMAP
+       select GENERIC_ATOMIC64
+       select HAVE_MEMBLOCK
+       select HAVE_MEMBLOCK_NODE_MAP
+       select ARCH_DISCARD_MEMBLOCK
+       select GENERIC_CPU_DEVICES
+       select GENERIC_CLOCKEVENTS
+       select HAVE_MOD_ARCH_SPECIFIC
+	select VIRT_TO_BUS
+	select MODULES_USE_ELF_REL
+	select CLONE_BACKWARDS
+
+choice
+	prompt "System type"
+	default MACH_SPCT6600
+
+config ARCH_SCORE7
+	bool "SCORE7 processor"
+	select SYS_SUPPORTS_32BIT_KERNEL
+
+config MACH_SPCT6600
+	bool "SPCT6600 series based machines"
+	select SYS_SUPPORTS_32BIT_KERNEL
+
+config SCORE_SIM
+	bool "Score simulator"
+	select SYS_SUPPORTS_32BIT_KERNEL
+endchoice
+
+endmenu
+
+config NO_DMA
+	bool
+	default y
+
+config RWSEM_GENERIC_SPINLOCK
+	def_bool y
+
+config GENERIC_HWEIGHT
+	def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+	def_bool y
+
+menu "Kernel type"
+
+config 32BIT
+	def_bool y
+
+config ARCH_FLATMEM_ENABLE
+	def_bool y
+
+source "mm/Kconfig"
+
+config MEMORY_START
+	hex
+	default	0xa0000000
+
+source "kernel/Kconfig.hz"
+source "kernel/Kconfig.preempt"
+
+endmenu
+
+config RWSEM_GENERIC_SPINLOCK
+	def_bool y
+
+config LOCKDEP_SUPPORT
+	def_bool y
+
+config STACKTRACE_SUPPORT
+	def_bool y
+
+source "init/Kconfig"
+
+source "kernel/Kconfig.freezer"
+
+config MMU
+	def_bool y
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/score/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
+
+config NO_IOMEM
+       def_bool y

arch/score/Kconfig.debug

@@ -0,0 +1,28 @@
+menu "Kernel hacking"
+
+config TRACE_IRQFLAGS_SUPPORT
+	bool
+	default y
+
+source "lib/Kconfig.debug"
+
+config CMDLINE
+	string "Default kernel command string"
+	default ""
+	help
+	  On some platforms, there is currently no way for the boot loader to
+	  pass arguments to the kernel. For these platforms, you can supply
+	  some command-line options at build time by entering them here.  In
+	  other cases you can specify kernel args so that you don't have
+	  to set them up in board prom initialization routines.
+
+config RUNTIME_DEBUG
+	bool "Enable run-time debugging"
+	depends on DEBUG_KERNEL
+	help
+	  If you say Y here, some debugging macros will do run-time checking.
+	  If you say N here, those macros will mostly turn to no-ops.  See
+	  include/asm-score/debug.h for debugging macros.
+	  If unsure, say N.
+
+endmenu

arch/score/Makefile

@@ -0,0 +1,44 @@
+#
+# arch/score/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.
+#
+
+KBUILD_DEFCONFIG := spct6600_defconfig
+CROSS_COMPILE := score-linux-
+
+#
+# CPU-dependent compiler/assembler options for optimization.
+#
+cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \
+	-D__linux__ -ffunction-sections -ffreestanding
+
+#
+# Board-dependent options and extra files
+#
+KBUILD_AFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
+KBUILD_AFLAGS_MODULE +=
+KBUILD_CFLAGS_MODULE +=
+LDFLAGS += --oformat elf32-littlescore
+LDFLAGS_vmlinux	+= -G0 -static -nostdlib
+
+head-y := arch/score/kernel/head.o
+libs-y += arch/score/lib/
+core-y += arch/score/kernel/ arch/score/mm/
+
+boot := arch/score/boot
+
+vmlinux.bin: vmlinux
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+archclean:
+	@$(MAKE) $(clean)=$(boot)
+
+define archhelp
+	echo '  vmlinux.bin          - Raw binary boot image'
+	echo
+	echo '  These will be default as appropriate for a configured platform.'
+endef

arch/score/boot/Makefile

@@ -0,0 +1,15 @@
+#
+# arch/score/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.
+#
+
+targets	:= vmlinux.bin
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
+	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+clean-files += vmlinux.bin

arch/score/configs/spct6600_defconfig

@@ -0,0 +1,85 @@
+CONFIG_HZ_100=y
+CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_LOG_BUF_SHIFT=12
+CONFIG_SYSFS_DEPRECATED_V2=y
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_EXPERT=y
+# CONFIG_KALLSYMS is not set
+# CONFIG_HOTPLUG is not set
+CONFIG_SLAB=y
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_BINFMT_MISC=y
+CONFIG_NET=y
+CONFIG_UNIX=y
+CONFIG_NET_KEY=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_ARPD=y
+# CONFIG_INET_LRO is not set
+# CONFIG_IPV6 is not set
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+# CONFIG_MISC_DEVICES is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+CONFIG_SERIAL_NONSTANDARD=y
+CONFIG_STALDRV=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_RAW_DRIVER=y
+CONFIG_MAX_RAW_DEVS=8192
+# CONFIG_HWMON is not set
+# CONFIG_VGA_CONSOLE is not set
+# CONFIG_HID_SUPPORT is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_AUTOFS_FS=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_PROC_KCORE=y
+# CONFIG_PROC_PAGE_MONITOR is not set
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFSD=y
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+CONFIG_KEYS_DEBUG_PROC_KEYS=y
+CONFIG_SECURITY=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_CRYPTO_NULL=y
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_MD4=y
+CONFIG_CRYPTO_MICHAEL_MIC=y
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+CONFIG_CRC_CCITT=y
+CONFIG_CRC16=y
+CONFIG_LIBCRC32C=y

arch/score/include/asm/Kbuild

@@ -0,0 +1,16 @@
+
+header-y +=
+
+
+generic-y += barrier.h
+generic-y += clkdev.h
+generic-y += cputime.h
+generic-y += irq_work.h
+generic-y += mcs_spinlock.h
+generic-y += mm-arch-hooks.h
+generic-y += preempt.h
+generic-y += sections.h
+generic-y += trace_clock.h
+generic-y += xor.h
+generic-y += serial.h
+generic-y += word-at-a-time.h

arch/score/include/asm/asm-offsets.h

@@ -0,0 +1 @@
+#include <generated/asm-offsets.h>

arch/score/include/asm/asmmacro.h

@@ -0,0 +1,161 @@
+#ifndef _ASM_SCORE_ASMMACRO_H
+#define _ASM_SCORE_ASMMACRO_H
+
+#include <asm/asm-offsets.h>
+
+#ifdef __ASSEMBLY__
+
+.macro	SAVE_ALL
+	mfcr	r30, cr0
+	mv	r31, r0
+	nop
+	/* if UMs == 1, change stack. */
+	slli.c	r30, r30, 28
+	bpl	1f
+	la	r31, kernelsp
+	lw	r31, [r31]
+1:
+	mv	r30, r0
+	addri	r0, r31, -PT_SIZE
+
+	sw	r30, [r0, PT_R0]
+	.set	r1
+	sw	r1, [r0, PT_R1]
+	.set	nor1
+	sw	r2, [r0, PT_R2]
+	sw	r3, [r0, PT_R3]
+	sw	r4, [r0, PT_R4]
+	sw	r5, [r0, PT_R5]
+	sw	r6, [r0, PT_R6]
+	sw	r7, [r0, PT_R7]
+
+	sw	r8, [r0, PT_R8]
+	sw	r9, [r0, PT_R9]
+	sw	r10, [r0, PT_R10]
+	sw	r11, [r0, PT_R11]
+	sw	r12, [r0, PT_R12]
+	sw	r13, [r0, PT_R13]
+	sw	r14, [r0, PT_R14]
+	sw	r15, [r0, PT_R15]
+
+	sw	r16, [r0, PT_R16]
+	sw	r17, [r0, PT_R17]
+	sw	r18, [r0, PT_R18]
+	sw	r19, [r0, PT_R19]
+	sw	r20, [r0, PT_R20]
+	sw	r21, [r0, PT_R21]
+	sw	r22, [r0, PT_R22]
+	sw	r23, [r0, PT_R23]
+
+	sw	r24, [r0, PT_R24]
+	sw	r25, [r0, PT_R25]
+	sw	r25, [r0, PT_R25]
+	sw	r26, [r0, PT_R26]
+	sw	r27, [r0, PT_R27]
+
+	sw	r28, [r0, PT_R28]
+	sw	r29, [r0, PT_R29]
+	orri	r28, r0, 0x1fff
+	li	r31, 0x00001fff
+	xor	r28, r28, r31
+
+	mfcehl	r30, r31
+	sw	r30, [r0, PT_CEH]
+	sw	r31, [r0, PT_CEL]
+
+	mfcr	r31, cr0
+	sw	r31, [r0, PT_PSR]
+
+	mfcr	r31, cr1
+	sw	r31, [r0, PT_CONDITION]
+
+	mfcr	r31, cr2
+	sw	r31, [r0, PT_ECR]
+	
+	mfcr	r31, cr5
+	srli	r31, r31, 1
+	slli	r31, r31, 1
+	sw	r31, [r0, PT_EPC]
+.endm
+
+.macro	RESTORE_ALL_AND_RET
+	mfcr	r30, cr0
+	srli	r30, r30, 1
+	slli	r30, r30, 1
+	mtcr	r30, cr0
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	.set	r1
+	ldis	r1, 0x00ff
+	and	r30, r30, r1
+	not	r1, r1
+	lw	r31, [r0, PT_PSR]
+	and	r31, r31, r1
+	.set	nor1
+	or	r31, r31, r30
+	mtcr	r31, cr0
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	lw	r30, [r0, PT_CONDITION]
+	mtcr	r30, cr1
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	lw	r30, [r0, PT_CEH]
+	lw	r31, [r0, PT_CEL]
+	mtcehl	r30, r31
+
+	.set	r1
+	lw	r1, [r0, PT_R1]
+	.set	nor1
+	lw	r2, [r0, PT_R2]
+	lw	r3, [r0, PT_R3]
+	lw	r4, [r0, PT_R4]
+	lw	r5, [r0, PT_R5]
+	lw	r6, [r0, PT_R6]
+	lw	r7, [r0, PT_R7]
+
+	lw	r8, [r0, PT_R8]
+	lw	r9, [r0, PT_R9]
+	lw	r10, [r0, PT_R10]
+	lw	r11, [r0, PT_R11]
+	lw	r12, [r0, PT_R12]
+	lw	r13, [r0, PT_R13]
+	lw	r14, [r0, PT_R14]
+	lw	r15, [r0, PT_R15]
+
+	lw	r16, [r0, PT_R16]
+	lw	r17, [r0, PT_R17]
+	lw	r18, [r0, PT_R18]
+	lw	r19, [r0, PT_R19]
+	lw	r20, [r0, PT_R20]
+	lw	r21, [r0, PT_R21]
+	lw	r22, [r0, PT_R22]
+	lw	r23, [r0, PT_R23]
+
+	lw	r24, [r0, PT_R24]
+	lw	r25, [r0, PT_R25]
+	lw	r26, [r0, PT_R26]
+	lw	r27, [r0, PT_R27]
+	lw	r28, [r0, PT_R28]
+	lw	r29, [r0, PT_R29]
+
+	lw	r30, [r0, PT_EPC]
+	lw	r0, [r0, PT_R0]
+	mtcr	r30, cr5
+	rte
+.endm
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_SCORE_ASMMACRO_H */

arch/score/include/asm/atomic.h

@@ -0,0 +1,7 @@
+#ifndef _ASM_SCORE_ATOMIC_H
+#define _ASM_SCORE_ATOMIC_H
+
+#include <asm/cmpxchg.h>
+#include <asm-generic/atomic.h>
+
+#endif /* _ASM_SCORE_ATOMIC_H */

arch/score/include/asm/bitops.h

@@ -0,0 +1,10 @@
+#ifndef _ASM_SCORE_BITOPS_H
+#define _ASM_SCORE_BITOPS_H
+
+#include <asm/byteorder.h> /* swab32 */
+#include <asm/barrier.h>
+
+#include <asm-generic/bitops.h>
+#include <asm-generic/bitops/__fls.h>
+
+#endif /* _ASM_SCORE_BITOPS_H */

arch/score/include/asm/bug.h

@@ -0,0 +1,17 @@
+#ifndef _ASM_SCORE_BUG_H
+#define _ASM_SCORE_BUG_H
+
+#include <asm-generic/bug.h>
+
+struct pt_regs;
+extern void __die(const char *, struct pt_regs *, const char *,
+	const char *, unsigned long) __attribute__((noreturn));
+extern void __die_if_kernel(const char *, struct pt_regs *, const char *,
+	const char *, unsigned long);
+
+#define die(msg, regs)							\
+	__die(msg, regs, __FILE__ ":", __func__, __LINE__)
+#define die_if_kernel(msg, regs)					\
+	__die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__)
+
+#endif /* _ASM_SCORE_BUG_H */

arch/score/include/asm/bugs.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BUGS_H
+#define _ASM_SCORE_BUGS_H
+
+#include <asm-generic/bugs.h>
+
+#endif /* _ASM_SCORE_BUGS_H */

arch/score/include/asm/cache.h

@@ -0,0 +1,7 @@
+#ifndef _ASM_SCORE_CACHE_H
+#define _ASM_SCORE_CACHE_H
+
+#define L1_CACHE_SHIFT		4
+#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+
+#endif /* _ASM_SCORE_CACHE_H */

arch/score/include/asm/cacheflush.h

@@ -0,0 +1,48 @@
+#ifndef _ASM_SCORE_CACHEFLUSH_H
+#define _ASM_SCORE_CACHEFLUSH_H
+
+/* Keep includes the same across arches. */
+#include <linux/mm.h>
+
+extern void flush_cache_all(void);
+extern void flush_cache_mm(struct mm_struct *mm);
+extern void flush_cache_range(struct vm_area_struct *vma,
+				unsigned long start, unsigned long end);
+extern void flush_cache_page(struct vm_area_struct *vma,
+				unsigned long page, unsigned long pfn);
+extern void flush_cache_sigtramp(unsigned long addr);
+extern void flush_icache_all(void);
+extern void flush_icache_range(unsigned long start, unsigned long end);
+extern void flush_dcache_range(unsigned long start, unsigned long end);
+extern void flush_dcache_page(struct page *page);
+
+#define PG_dcache_dirty         PG_arch_1
+
+#define flush_cache_dup_mm(mm)			do {} while (0)
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
+#define flush_dcache_mmap_lock(mapping)		do {} while (0)
+#define flush_dcache_mmap_unlock(mapping)	do {} while (0)
+#define flush_cache_vmap(start, end)		do {} while (0)
+#define flush_cache_vunmap(start, end)		do {} while (0)
+
+static inline void flush_icache_page(struct vm_area_struct *vma,
+	struct page *page)
+{
+	if (vma->vm_flags & VM_EXEC) {
+		void *v = page_address(page);
+		flush_icache_range((unsigned long) v,
+				(unsigned long) v + PAGE_SIZE);
+	}
+}
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)	\
+	do {							\
+		memcpy(dst, src, len);				\
+		if ((vma->vm_flags & VM_EXEC))			\
+			flush_cache_page(vma, vaddr, page_to_pfn(page));\
+	} while (0)
+
+#endif /* _ASM_SCORE_CACHEFLUSH_H */

arch/score/include/asm/checksum.h

@@ -0,0 +1,244 @@
+#ifndef _ASM_SCORE_CHECKSUM_H
+#define _ASM_SCORE_CHECKSUM_H
+
+#include <linux/in6.h>
+#include <asm/uaccess.h>
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+unsigned int csum_partial(const void *buff, int len, __wsum sum);
+unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
+					unsigned int sum, int *csum_err);
+unsigned int csum_partial_copy(const char *src, char *dst,
+					int len, unsigned int sum);
+
+/*
+ * this is a new version of the above that records errors it finds in *errp,
+ * but continues and zeros the rest of the buffer.
+ */
+
+/*
+ * Copy and checksum to user
+ */
+#define HAVE_CSUM_COPY_USER
+static inline
+__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
+			__wsum sum, int *err_ptr)
+{
+	sum = csum_partial(src, len, sum);
+	if (copy_to_user(dst, src, len)) {
+		*err_ptr = -EFAULT;
+		return (__force __wsum) -1; /* invalid checksum */
+	}
+	return sum;
+}
+
+
+#define csum_partial_copy_nocheck csum_partial_copy
+/*
+ *	Fold a partial checksum without adding pseudo headers
+ */
+
+static inline __sum16 csum_fold(__wsum sum)
+{
+	/* the while loop is unnecessary really, it's always enough with two
+	   iterations */
+	__asm__ __volatile__(
+		".set volatile\n\t"
+		".set\tr1\n\t"
+		"slli\tr1,%0, 16\n\t"
+		"add\t%0,%0, r1\n\t"
+		"cmp.c\tr1, %0\n\t"
+		"srli\t%0, %0, 16\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:ldi\tr30, 0xffff\n\t"
+		"xor\t%0, %0, r30\n\t"
+		"slli\t%0, %0, 16\n\t"
+		"srli\t%0, %0, 16\n\t"
+		".set\tnor1\n\t"
+		".set optimize\n\t"
+		: "=r" (sum)
+		: "0" (sum));
+	return sum;
+}
+
+/*
+ *	This is a version of ip_compute_csum() optimized for IP headers,
+ *	which always checksum on 4 octet boundaries.
+ *
+ *	By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
+ *	Arnt Gulbrandsen.
+ */
+static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
+{
+	unsigned int sum;
+	unsigned long dummy;
+
+	__asm__ __volatile__(
+		".set volatile\n\t"
+		".set\tnor1\n\t"
+		"lw\t%0, [%1]\n\t"
+		"subri\t%2, %2, 4\n\t"
+		"slli\t%2, %2, 2\n\t"
+		"lw\t%3, [%1, 4]\n\t"
+		"add\t%2, %2, %1\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"lw\t%3, [%1, 8]\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"lw\t%3, [%1, 12]\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n"
+
+		"1:\tlw\t%3, [%1, 16]\n\t"
+		"addi\t%1, 4\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"bleu\t2f\n\t"
+		"addi\t%0, 0x1\n"
+		"2:cmp.c\t%2, %1\n\t"
+		"bne\t1b\n\t"
+
+		".set\tr1\n\t"
+		".set optimize\n\t"
+		: "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy)
+		: "1" (iph), "2" (ihl));
+
+	return csum_fold(sum);
+}
+
+static inline __wsum
+csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
+		unsigned short proto, __wsum sum)
+{
+	unsigned long tmp = (ntohs(len) << 16) + proto * 256;
+	__asm__ __volatile__(
+		".set volatile\n\t"
+		"add\t%0, %0, %2\n\t"
+		"cmp.c\t%2, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		"add\t%0, %0, %3\n\t"
+		"cmp.c\t%3, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		"add\t%0, %0, %4\n\t"
+		"cmp.c\t%4, %0\n\t"
+		"bleu\t1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		".set optimize\n\t"
+		: "=r" (sum)
+		: "0" (daddr), "r"(saddr),
+		"r" (tmp),
+		"r" (sum));
+	return sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static inline __sum16
+csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
+		unsigned short proto, __wsum sum)
+{
+	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+
+static inline unsigned short ip_compute_csum(const void *buff, int len)
+{
+	return csum_fold(csum_partial(buff, len, 0));
+}
+
+#define _HAVE_ARCH_IPV6_CSUM
+static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+				const struct in6_addr *daddr,
+				__u32 len, unsigned short proto,
+				__wsum sum)
+{
+	__asm__ __volatile__(
+		".set\tvolatile\t\t\t# csum_ipv6_magic\n\t"
+		"add\t%0, %0, %5\t\t\t# proto (long in network byte order)\n\t"
+		"cmp.c\t%5, %0\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %6\t\t\t# csum\n\t"
+		"cmp.c\t%6, %0\n\t"
+		"lw\t%1, [%2, 0]\t\t\t# four words source address\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"1:lw\t%1, [%2, 4]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"lw\t%1, [%2,8]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"lw\t%1, [%2, 12]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0,%1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"lw\t%1, [%3, 0]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"lw\t%1, [%3, 4]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"lw\t%1, [%3, 8]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"lw\t%1, [%3, 12]\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:add\t%0, %0, %1\n\t"
+		"cmp.c\t%1, %0\n\t"
+		"bleu 1f\n\t"
+		"addi\t%0, 0x1\n\t"
+		"1:\n\t"
+		".set\toptimize"
+		: "=r" (sum), "=r" (proto)
+		: "r" (saddr), "r" (daddr),
+		  "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
+
+	return csum_fold(sum);
+}
+#endif /* _ASM_SCORE_CHECKSUM_H */

arch/score/include/asm/cmpxchg.h

@@ -0,0 +1,47 @@
+#ifndef _ASM_SCORE_CMPXCHG_H
+#define _ASM_SCORE_CMPXCHG_H
+
+#include <linux/irqflags.h>
+
+struct __xchg_dummy { unsigned long a[100]; };
+#define __xg(x) ((struct __xchg_dummy *)(x))
+
+static inline
+unsigned long __xchg(volatile unsigned long *m, unsigned long val)
+{
+	unsigned long retval;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	retval = *m;
+	*m = val;
+	local_irq_restore(flags);
+	return retval;
+}
+
+#define xchg(ptr, v)						\
+	((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr),	\
+					(unsigned long)(v)))
+
+static inline unsigned long __cmpxchg(volatile unsigned long *m,
+				unsigned long old, unsigned long new)
+{
+	unsigned long retval;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	retval = *m;
+	if (retval == old)
+		*m = new;
+	local_irq_restore(flags);
+	return retval;
+}
+
+#define cmpxchg(ptr, o, n)					\
+	((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr),	\
+					(unsigned long)(o),	\
+					(unsigned long)(n)))
+
+#include <asm-generic/cmpxchg-local.h>
+
+#endif /* _ASM_SCORE_CMPXCHG_H */

arch/score/include/asm/current.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_CURRENT_H
+#define _ASM_SCORE_CURRENT_H
+
+#include <asm-generic/current.h>
+
+#endif /* _ASM_SCORE_CURRENT_H */

arch/score/include/asm/delay.h

@@ -0,0 +1,28 @@
+#ifndef _ASM_SCORE_DELAY_H
+#define _ASM_SCORE_DELAY_H
+
+#include <asm-generic/param.h>
+
+static inline void __delay(unsigned long loops)
+{
+	/* 3 cycles per loop. */
+	__asm__ __volatile__ (
+		"1:\tsubi\t%0, 3\n\t"
+		"cmpz.c\t%0\n\t"
+		"ble\t1b\n\t"
+		: "=r" (loops)
+		: "0" (loops));
+}
+
+static inline void __udelay(unsigned long usecs)
+{
+	unsigned long loops_per_usec;
+
+	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
+
+	__delay(usecs * loops_per_usec);
+}
+
+#define udelay(usecs) __udelay(usecs)
+
+#endif /* _ASM_SCORE_DELAY_H */

arch/score/include/asm/device.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_DEVICE_H
+#define _ASM_SCORE_DEVICE_H
+
+#include <asm-generic/device.h>
+
+#endif /* _ASM_SCORE_DEVICE_H */

arch/score/include/asm/div64.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_DIV64_H
+#define _ASM_SCORE_DIV64_H
+
+#include <asm-generic/div64.h>
+
+#endif /* _ASM_SCORE_DIV64_H */

arch/score/include/asm/dma.h

@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_DMA_H
+#define _ASM_SCORE_DMA_H
+
+#include <asm/io.h>
+
+#define MAX_DMA_ADDRESS		(0)
+
+#endif /* _ASM_SCORE_DMA_H */

arch/score/include/asm/elf.h

@@ -0,0 +1,97 @@
+#ifndef _ASM_SCORE_ELF_H
+#define _ASM_SCORE_ELF_H
+
+#include <linux/ptrace.h>
+
+#define EM_SCORE7	135
+
+/* Relocation types. */
+#define R_SCORE_NONE		0
+#define R_SCORE_HI16		1
+#define R_SCORE_LO16		2
+#define R_SCORE_BCMP		3
+#define R_SCORE_24		4
+#define R_SCORE_PC19		5
+#define R_SCORE16_11		6
+#define R_SCORE16_PC8		7
+#define R_SCORE_ABS32		8
+#define R_SCORE_ABS16		9
+#define R_SCORE_DUMMY2		10
+#define R_SCORE_GP15		11
+#define R_SCORE_GNU_VTINHERIT	12
+#define R_SCORE_GNU_VTENTRY	13
+#define R_SCORE_GOT15		14
+#define R_SCORE_GOT_LO16	15
+#define R_SCORE_CALL15		16
+#define R_SCORE_GPREL32		17
+#define R_SCORE_REL32		18
+#define R_SCORE_DUMMY_HI16	19
+#define R_SCORE_IMM30		20
+#define R_SCORE_IMM32		21
+
+/* ELF register definitions */
+typedef unsigned long	elf_greg_t;
+
+#define ELF_NGREG	(sizeof(struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t	elf_gregset_t[ELF_NGREG];
+
+/* Score does not have fp regs. */
+typedef double		elf_fpreg_t;
+typedef elf_fpreg_t	elf_fpregset_t;
+
+#define elf_check_arch(x)	((x)->e_machine == EM_SCORE7)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS	ELFCLASS32
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_DATA	ELFDATA2LSB
+#define ELF_ARCH	EM_SCORE7
+
+struct task_struct;
+struct pt_regs;
+
+#define CORE_DUMP_USE_REGSET
+#define ELF_EXEC_PAGESIZE	PAGE_SIZE
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this cpu supports.  This could be done in userspace,
+   but it's not easy, and we've already done it here.  */
+
+#define ELF_HWCAP	(0)
+
+/* This yields a string that ld.so will use to load implementation
+   specific libraries for optimization.  This is more specific in
+   intent than poking at uname or /proc/cpuinfo.
+
+   For the moment, we have only optimizations for the Intel generations,
+   but that could change... */
+
+#define ELF_PLATFORM	(NULL)
+
+#define ELF_PLAT_INIT(_r, load_addr)					\
+do {									\
+	_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;	\
+	_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;	\
+	_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;	\
+	_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;	\
+	_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;	\
+	_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;	\
+	_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;	\
+	_r->regs[30] = _r->regs[31] = 0;				\
+} while (0)
+
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#ifndef ELF_ET_DYN_BASE
+#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+#endif
+
+#endif /* _ASM_SCORE_ELF_H */

arch/score/include/asm/emergency-restart.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_EMERGENCY_RESTART_H
+#define _ASM_SCORE_EMERGENCY_RESTART_H
+
+#include <asm-generic/emergency-restart.h>
+
+#endif /* _ASM_SCORE_EMERGENCY_RESTART_H */

arch/score/include/asm/exec.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_EXEC_H
+#define _ASM_SCORE_EXEC_H
+
+extern unsigned long arch_align_stack(unsigned long sp);
+
+#endif /* _ASM_SCORE_EXEC_H */

arch/score/include/asm/fixmap.h

@@ -0,0 +1,82 @@
+#ifndef _ASM_SCORE_FIXMAP_H
+#define _ASM_SCORE_FIXMAP_H
+
+#include <asm/page.h>
+
+#define PHY_RAM_BASE		0x00000000
+#define PHY_IO_BASE		0x10000000
+
+#define VIRTUAL_RAM_BASE	0xa0000000
+#define VIRTUAL_IO_BASE		0xb0000000
+
+#define RAM_SPACE_SIZE		0x10000000
+#define IO_SPACE_SIZE		0x10000000
+
+/* Kernel unmapped, cached 512MB */
+#define KSEG1			0xa0000000
+
+/*
+ * Here we define all the compile-time 'special' virtual
+ * addresses. The point is to have a constant address at
+ * compile time, but to set the physical address only
+ * in the boot process. We allocate these special addresses
+ * from the end of virtual memory (0xfffff000) backwards.
+ * Also this lets us do fail-safe vmalloc(), we
+ * can guarantee that these special addresses and
+ * vmalloc()-ed addresses never overlap.
+ *
+ * these 'compile-time allocated' memory buffers are
+ * fixed-size 4k pages. (or larger if used with an increment
+ * highger than 1) use fixmap_set(idx,phys) to associate
+ * physical memory with fixmap indices.
+ *
+ * TLB entries of such buffers will not be flushed across
+ * task switches.
+ */
+
+/*
+ * on UP currently we will have no trace of the fixmap mechanizm,
+ * no page table allocations, etc. This might change in the
+ * future, say framebuffers for the console driver(s) could be
+ * fix-mapped?
+ */
+enum fixed_addresses {
+#define FIX_N_COLOURS 8
+	FIX_CMAP_BEGIN,
+	FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS,
+	__end_of_fixed_addresses
+};
+
+/*
+ * used by vmalloc.c.
+ *
+ * Leave one empty page between vmalloc'ed areas and
+ * the start of the fixmap, and leave one page empty
+ * at the top of mem..
+ */
+#define FIXADDR_TOP	((unsigned long)(long)(int)0xfefe0000)
+#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE)
+
+#define __fix_to_virt(x)	(FIXADDR_TOP - ((x) << PAGE_SHIFT))
+#define __virt_to_fix(x)	\
+	((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT)
+
+extern void __this_fixmap_does_not_exist(void);
+
+/*
+ * 'index to address' translation. If anyone tries to use the idx
+ * directly without tranlation, we catch the bug with a NULL-deference
+ * kernel oops. Illegal ranges of incoming indices are caught too.
+ */
+static inline unsigned long fix_to_virt(const unsigned int idx)
+{
+	return __fix_to_virt(idx);
+}
+
+static inline unsigned long virt_to_fix(const unsigned long vaddr)
+{
+	return __virt_to_fix(vaddr);
+}
+
+#endif /* _ASM_SCORE_FIXMAP_H */

arch/score/include/asm/ftrace.h

@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_FTRACE_H
+#define _ASM_SCORE_FTRACE_H
+
+#endif /* _ASM_SCORE_FTRACE_H */

arch/score/include/asm/futex.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_FUTEX_H
+#define _ASM_SCORE_FUTEX_H
+
+#include <asm-generic/futex.h>
+
+#endif /* _ASM_SCORE_FUTEX_H */

arch/score/include/asm/hardirq.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_HARDIRQ_H
+#define _ASM_SCORE_HARDIRQ_H
+
+#include <asm-generic/hardirq.h>
+
+#endif /* _ASM_SCORE_HARDIRQ_H */

arch/score/include/asm/hw_irq.h

@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_HW_IRQ_H
+#define _ASM_SCORE_HW_IRQ_H
+
+#endif /* _ASM_SCORE_HW_IRQ_H */

arch/score/include/asm/io.h

@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_IO_H
+#define _ASM_SCORE_IO_H
+
+#include <asm-generic/io.h>
+
+#define virt_to_bus	virt_to_phys
+#define bus_to_virt	phys_to_virt
+#endif /* _ASM_SCORE_IO_H */

arch/score/include/asm/irq.h

@@ -0,0 +1,25 @@
+#ifndef _ASM_SCORE_IRQ_H
+#define _ASM_SCORE_IRQ_H
+
+#define EXCEPTION_VECTOR_BASE_ADDR	0xa0000000
+#define VECTOR_ADDRESS_OFFSET_MODE4	0
+#define VECTOR_ADDRESS_OFFSET_MODE16	1
+
+#define DEBUG_VECTOR_SIZE		(0x4)
+#define DEBUG_VECTOR_BASE_ADDR		((EXCEPTION_VECTOR_BASE_ADDR) + 0x1fc)
+
+#define GENERAL_VECTOR_SIZE		(0x10)
+#define GENERAL_VECTOR_BASE_ADDR	((EXCEPTION_VECTOR_BASE_ADDR) + 0x200)
+
+#define NR_IRQS				64
+#define IRQ_VECTOR_SIZE			(0x10)
+#define IRQ_VECTOR_BASE_ADDR		((EXCEPTION_VECTOR_BASE_ADDR) + 0x210)
+#define IRQ_VECTOR_END_ADDR		((EXCEPTION_VECTOR_BASE_ADDR) + 0x5f0)
+
+#define irq_canonicalize(irq)	(irq)
+
+#define IRQ_TIMER (7)		/* Timer IRQ number of SPCT6600 */
+
+extern void interrupt_exception_vector(void);
+
+#endif /* _ASM_SCORE_IRQ_H */

arch/score/include/asm/irq_regs.h

@@ -0,0 +1,11 @@
+#ifndef _ASM_SCORE_IRQ_REGS_H
+#define _ASM_SCORE_IRQ_REGS_H
+
+#include <linux/thread_info.h>
+
+static inline struct pt_regs *get_irq_regs(void)
+{
+	return current_thread_info()->regs;
+}
+
+#endif /* _ASM_SCORE_IRQ_REGS_H */

arch/score/include/asm/irqflags.h

@@ -0,0 +1,120 @@
+#ifndef _ASM_SCORE_IRQFLAGS_H
+#define _ASM_SCORE_IRQFLAGS_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+static inline unsigned long arch_local_save_flags(void)
+{
+	unsigned long flags;
+
+	asm volatile(
+		"	mfcr	r8, cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	mv	%0, r8		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	ldi	r9, 0x1		\n"
+		"	and	%0, %0, r9	\n"
+		: "=r" (flags)
+		:
+		: "r8", "r9");
+	return flags;
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+	unsigned long flags;
+
+	asm volatile(
+		"	mfcr	r8, cr0		\n"
+		"	li	r9, 0xfffffffe	\n"
+		"	nop			\n"
+		"	mv	%0, r8		\n"
+		"	and	r8, r8, r9	\n"
+		"	mtcr	r8, cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		: "=r" (flags)
+		:
+		: "r8", "r9", "memory");
+
+	return flags;
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+	asm volatile(
+		"	mfcr	r8, cr0		\n"
+		"	ldi	r9, 0x1		\n"
+		"	and	%0, %0, r9	\n"
+		"	or	r8, r8, %0	\n"
+		"	mtcr	r8, cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		:
+		: "r"(flags)
+		: "r8", "r9", "memory");
+}
+
+static inline void arch_local_irq_enable(void)
+{
+	asm volatile(
+		"	mfcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	ori	r8,0x1		\n"
+		"	mtcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		:
+		:
+		: "r8", "memory");
+}
+
+static inline void arch_local_irq_disable(void)
+{
+	asm volatile(
+		"	mfcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	srli	r8,r8,1		\n"
+		"	slli	r8,r8,1		\n"
+		"	mtcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		:
+		:
+		: "r8", "memory");
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+	return !(flags & 1);
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+	return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_IRQFLAGS_H */

arch/score/include/asm/kdebug.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_KDEBUG_H
+#define _ASM_SCORE_KDEBUG_H
+
+#include <asm-generic/kdebug.h>
+
+#endif /* _ASM_SCORE_KDEBUG_H */

arch/score/include/asm/kmap_types.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_KMAP_TYPES_H
+#define _ASM_SCORE_KMAP_TYPES_H
+
+#include <asm-generic/kmap_types.h>
+
+#endif /* _ASM_SCORE_KMAP_TYPES_H */

arch/score/include/asm/linkage.h

@@ -0,0 +1,7 @@
+#ifndef _ASM_SCORE_LINKAGE_H
+#define _ASM_SCORE_LINKAGE_H
+
+#define __ALIGN .align 2
+#define __ALIGN_STR ".align 2"
+
+#endif /* _ASM_SCORE_LINKAGE_H */

arch/score/include/asm/local.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_LOCAL_H
+#define _ASM_SCORE_LOCAL_H
+
+#include <asm-generic/local.h>
+
+#endif /* _ASM_SCORE_LOCAL_H */

arch/score/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

arch/score/include/asm/mmu.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MMU_H
+#define _ASM_SCORE_MMU_H
+
+typedef unsigned long mm_context_t;
+
+#endif /* _ASM_SCORE_MMU_H */

arch/score/include/asm/mmu_context.h

@@ -0,0 +1,113 @@
+#ifndef _ASM_SCORE_MMU_CONTEXT_H
+#define _ASM_SCORE_MMU_CONTEXT_H
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <asm-generic/mm_hooks.h>
+
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+#include <asm/scoreregs.h>
+
+/*
+ * For the fast tlb miss handlers, we keep a per cpu array of pointers
+ * to the current pgd for each processor. Also, the proc. id is stuffed
+ * into the context register.
+ */
+extern unsigned long asid_cache;
+extern unsigned long pgd_current;
+
+#define TLBMISS_HANDLER_SETUP_PGD(pgd) (pgd_current = (unsigned long)(pgd))
+
+#define TLBMISS_HANDLER_SETUP()				\
+do {							\
+	write_c0_context(0);				\
+	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)	\
+} while (0)
+
+/*
+ * All unused by hardware upper bits will be considered
+ * as a software asid extension.
+ */
+#define ASID_VERSION_MASK	0xfffff000
+#define ASID_FIRST_VERSION	0x1000
+
+/* PEVN    --------- VPN ---------- --ASID--- -NA- */
+/* binary: 0000 0000 0000 0000 0000 0000 0001 0000 */
+/* binary: 0000 0000 0000 0000 0000 1111 1111 0000 */
+#define ASID_INC	0x10
+#define ASID_MASK	0xff0
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+				struct task_struct *tsk)
+{}
+
+static inline void
+get_new_mmu_context(struct mm_struct *mm)
+{
+	unsigned long asid = asid_cache + ASID_INC;
+
+	if (!(asid & ASID_MASK)) {
+		local_flush_tlb_all();		/* start new asid cycle */
+		if (!asid)			/* fix version if needed */
+			asid = ASID_FIRST_VERSION;
+	}
+
+	mm->context = asid;
+	asid_cache = asid;
+}
+
+/*
+ * Initialize the context related info for a new mm_struct
+ * instance.
+ */
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	mm->context = 0;
+	return 0;
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+			struct task_struct *tsk)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	if ((next->context ^ asid_cache) & ASID_VERSION_MASK)
+		get_new_mmu_context(next);
+
+	pevn_set(next->context);
+	TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+	local_irq_restore(flags);
+}
+
+/*
+ * Destroy context related info for an mm_struct that is about
+ * to be put to rest.
+ */
+static inline void destroy_context(struct mm_struct *mm)
+{}
+
+static inline void
+deactivate_mm(struct task_struct *task, struct mm_struct *mm)
+{}
+
+/*
+ * After we have set current->mm to a new value, this activates
+ * the context for the new mm so we see the new mappings.
+ */
+static inline void
+activate_mm(struct mm_struct *prev, struct mm_struct *next)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	get_new_mmu_context(next);
+	pevn_set(next->context);
+	TLBMISS_HANDLER_SETUP_PGD(next->pgd);
+	local_irq_restore(flags);
+}
+
+#endif /* _ASM_SCORE_MMU_CONTEXT_H */

arch/score/include/asm/module.h

@@ -0,0 +1,35 @@
+#ifndef _ASM_SCORE_MODULE_H
+#define _ASM_SCORE_MODULE_H
+
+#include <linux/list.h>
+#include <asm/uaccess.h>
+#include <asm-generic/module.h>
+
+struct mod_arch_specific {
+	/* Data Bus Error exception tables */
+	struct list_head dbe_list;
+	const struct exception_table_entry *dbe_start;
+	const struct exception_table_entry *dbe_end;
+};
+
+typedef uint8_t Elf64_Byte;		/* Type for a 8-bit quantity. */
+
+/* Given an address, look for it in the exception tables. */
+#ifdef CONFIG_MODULES
+const struct exception_table_entry *search_module_dbetables(unsigned long addr);
+#else
+static inline const struct exception_table_entry
+*search_module_dbetables(unsigned long addr)
+{
+	return NULL;
+}
+#endif
+
+#define MODULE_PROC_FAMILY "SCORE7"
+#define MODULE_KERNEL_TYPE "32BIT "
+#define MODULE_KERNEL_SMTC ""
+
+#define MODULE_ARCH_VERMAGIC \
+	MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC
+
+#endif /* _ASM_SCORE_MODULE_H */

arch/score/include/asm/mutex.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MUTEX_H
+#define _ASM_SCORE_MUTEX_H
+
+#include <asm-generic/mutex-dec.h>
+
+#endif /* _ASM_SCORE_MUTEX_H */

arch/score/include/asm/page.h

@@ -0,0 +1,93 @@
+#ifndef _ASM_SCORE_PAGE_H
+#define _ASM_SCORE_PAGE_H
+
+#include <linux/pfn.h>
+#include <linux/const.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT	(12)
+#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK	(~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#define PAGE_UP(addr)	(((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
+#define PAGE_DOWN(addr)	((addr)&(~((PAGE_SIZE)-1)))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size)	(((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr, size)	((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size)	_ALIGN_UP(addr, size)
+
+/*
+ * PAGE_OFFSET -- the first address of the first page of memory. When not
+ * using MMU this corresponds to the first free page in physical memory (aligned
+ * on a page boundary).
+ */
+#define PAGE_OFFSET		(0xA0000000UL)
+
+#define clear_page(pgaddr)			memset((pgaddr), 0, PAGE_SIZE)
+#define copy_page(to, from)			memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(pgaddr, vaddr, page)	memset((pgaddr), 0, PAGE_SIZE)
+#define copy_user_page(vto, vfrom, vaddr, topg) \
+			memcpy((vto), (vfrom), PAGE_SIZE)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t;		/* page table entry */
+typedef struct { unsigned long pgd; } pgd_t;		/* PGD table entry */
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x)	((x).pte)
+#define pgd_val(x)	((x).pgd)
+#define pgprot_val(x)	((x).pgprot)
+
+#define __pte(x)	((pte_t) { (x) })
+#define __pgd(x)	((pgd_t) { (x) })
+#define __pgprot(x)	((pgprot_t) { (x) })
+
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+extern unsigned long max_pfn;
+
+#define __pa(x)		((unsigned long)(x) - PAGE_OFFSET)
+#define __va(x)		((void *)((unsigned long) (x) + PAGE_OFFSET))
+
+#define phys_to_pfn(phys)	(PFN_DOWN(phys))
+#define pfn_to_phys(pfn)	(PFN_PHYS(pfn))
+
+#define virt_to_pfn(vaddr)	(phys_to_pfn((__pa(vaddr))))
+#define pfn_to_virt(pfn)	__va(pfn_to_phys((pfn)))
+
+#define virt_to_page(vaddr)	(pfn_to_page(virt_to_pfn(vaddr)))
+#define page_to_virt(page)	(pfn_to_virt(page_to_pfn(page)))
+
+#define page_to_phys(page)	(pfn_to_phys(page_to_pfn(page)))
+#define page_to_bus(page)	(page_to_phys(page))
+#define phys_to_page(paddr)	(pfn_to_page(phys_to_pfn(paddr)))
+
+#define pfn_valid(pfn)		(((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn))
+
+#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
+
+#endif /* __ASSEMBLY__ */
+
+#define virt_addr_valid(vaddr)	(pfn_valid(virt_to_pfn(vaddr)))
+
+#endif /* __KERNEL__ */
+
+#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
+				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
+
+#endif /* _ASM_SCORE_PAGE_H */

arch/score/include/asm/pci.h

@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_PCI_H
+#define _ASM_SCORE_PCI_H
+
+#endif /* _ASM_SCORE_PCI_H */

arch/score/include/asm/percpu.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_PERCPU_H
+#define _ASM_SCORE_PERCPU_H
+
+#include <asm-generic/percpu.h>
+
+#endif /* _ASM_SCORE_PERCPU_H */

arch/score/include/asm/pgalloc.h

@@ -0,0 +1,86 @@
+#ifndef _ASM_SCORE_PGALLOC_H
+#define _ASM_SCORE_PGALLOC_H
+
+#include <linux/mm.h>
+#include <linux/highmem.h>
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+	pte_t *pte)
+{
+	set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+	pgtable_t pte)
+{
+	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+
+#define pmd_pgtable(pmd)	pmd_page(pmd)
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+	pgd_t *ret, *init;
+
+	ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
+	if (ret) {
+		init = pgd_offset(&init_mm, 0UL);
+		pgd_init((unsigned long)ret);
+		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
+		(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+	}
+
+	return ret;
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	free_pages((unsigned long)pgd, PGD_ORDER);
+}
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+	unsigned long address)
+{
+	pte_t *pte;
+
+	pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
+					PTE_ORDER);
+
+	return pte;
+}
+
+static inline struct page *pte_alloc_one(struct mm_struct *mm,
+	unsigned long address)
+{
+	struct page *pte;
+
+	pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
+	if (!pte)
+		return NULL;
+	clear_highpage(pte);
+	if (!pgtable_page_ctor(pte)) {
+		__free_page(pte);
+		return NULL;
+	}
+	return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	free_pages((unsigned long)pte, PTE_ORDER);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+	pgtable_page_dtor(pte);
+	__free_pages(pte, PTE_ORDER);
+}
+
+#define __pte_free_tlb(tlb, pte, buf)			\
+do {							\
+	pgtable_page_dtor(pte);				\
+	tlb_remove_page((tlb), pte);			\
+} while (0)
+
+#define check_pgt_cache()		do {} while (0)
+
+#endif /* _ASM_SCORE_PGALLOC_H */

arch/score/include/asm/pgtable-bits.h

@@ -0,0 +1,24 @@
+#ifndef _ASM_SCORE_PGTABLE_BITS_H
+#define _ASM_SCORE_PGTABLE_BITS_H
+
+#define _PAGE_ACCESSED			(1<<5)	/* implemented in software */
+#define _PAGE_READ			(1<<6)	/* implemented in software */
+#define _PAGE_WRITE			(1<<7)	/* implemented in software */
+#define _PAGE_PRESENT			(1<<9)	/* implemented in software */
+#define _PAGE_MODIFIED			(1<<10)	/* implemented in software */
+
+#define _PAGE_GLOBAL			(1<<0)
+#define _PAGE_VALID			(1<<1)
+#define _PAGE_SILENT_READ		(1<<1)	/* synonym */
+#define _PAGE_DIRTY			(1<<2)	/* Write bit */
+#define _PAGE_SILENT_WRITE		(1<<2)
+#define _PAGE_CACHE			(1<<3)	/* cache */
+#define _CACHE_MASK			(1<<3)
+#define _PAGE_BUFFERABLE		(1<<4)	/*Fallow Spec. */
+
+#define __READABLE	(_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
+#define __WRITEABLE	(_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
+#define _PAGE_CHG_MASK			\
+	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE)
+
+#endif /* _ASM_SCORE_PGTABLE_BITS_H */

arch/score/include/asm/pgtable.h

@@ -0,0 +1,268 @@
+#ifndef _ASM_SCORE_PGTABLE_H
+#define _ASM_SCORE_PGTABLE_H
+
+#include <linux/const.h>
+#include <asm-generic/pgtable-nopmd.h>
+
+#include <asm/fixmap.h>
+#include <asm/setup.h>
+#include <asm/pgtable-bits.h>
+
+extern void load_pgd(unsigned long pg_dir);
+extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+#define PGDIR_SHIFT	22
+#define PGDIR_SIZE	(_AC(1, UL) << PGDIR_SHIFT)
+#define PGDIR_MASK	(~(PGDIR_SIZE - 1))
+
+/*
+ * Entries per page directory level: we use two-level, so
+ * we don't really have any PUD/PMD directory physically.
+ */
+#define PGD_ORDER	0
+#define PTE_ORDER	0
+
+#define PTRS_PER_PGD	1024
+#define PTRS_PER_PTE	1024
+
+#define USER_PTRS_PER_PGD	(0x80000000UL/PGDIR_SIZE)
+#define FIRST_USER_ADDRESS	0UL
+
+#define VMALLOC_START		(0xc0000000UL)
+
+#define PKMAP_BASE		(0xfd000000UL)
+
+#define VMALLOC_END		(FIXADDR_START - 2*PAGE_SIZE)
+
+#define pte_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \
+		__FILE__, __LINE__, pte_val(e))
+#define pgd_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \
+		__FILE__, __LINE__, pgd_val(e))
+
+/*
+ * Empty pgd/pmd entries point to the invalid_pte_table.
+ */
+static inline int pmd_none(pmd_t pmd)
+{
+	return pmd_val(pmd) == (unsigned long) invalid_pte_table;
+}
+
+#define pmd_bad(pmd)		(pmd_val(pmd) & ~PAGE_MASK)
+
+static inline int pmd_present(pmd_t pmd)
+{
+	return pmd_val(pmd) != (unsigned long) invalid_pte_table;
+}
+
+static inline void pmd_clear(pmd_t *pmdp)
+{
+	pmd_val(*pmdp) = ((unsigned long) invalid_pte_table);
+}
+
+#define pte_page(x)		pfn_to_page(pte_pfn(x))
+#define pte_pfn(x)		((unsigned long)((x).pte >> PAGE_SHIFT))
+#define pfn_pte(pfn, prot)	\
+	__pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
+
+#define __pgd_offset(address)	pgd_index(address)
+#define __pud_offset(address)	(((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+#define __pmd_offset(address)	(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+
+/* to find an entry in a kernel page-table-directory */
+#define pgd_offset_k(address)	pgd_offset(&init_mm, address)
+#define pgd_index(address)	(((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
+
+/* to find an entry in a page-table-directory */
+#define pgd_offset(mm, addr)	((mm)->pgd + pgd_index(addr))
+
+/* Find an entry in the third-level page table.. */
+#define __pte_offset(address)		\
+	(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset(dir, address)	\
+	((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
+#define pte_offset_kernel(dir, address)	\
+	((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
+
+#define pte_offset_map(dir, address)	\
+	((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
+#define pte_unmap(pte) ((void)(pte))
+
+#define __pte_to_swp_entry(pte)		\
+	((swp_entry_t) { pte_val(pte)})
+#define __swp_entry_to_pte(x)	((pte_t) {(x).val})
+
+#define pmd_phys(pmd)		__pa((void *)pmd_val(pmd))
+#define pmd_page(pmd)		(pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
+#define mk_pte(page, prot)	pfn_pte(page_to_pfn(page), prot)
+static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
+
+#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
+#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
+#define pte_clear(mm, addr, xp)		\
+	do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
+
+/*
+ * The "pgd_xxx()" functions here are trivial for a folded two-level
+ * setup: the pgd is never bad, and a pmd always exists (as it's folded
+ * into the pgd entry)
+ */
+#define pgd_present(pgd)	(1)
+#define pgd_none(pgd)		(0)
+#define pgd_bad(pgd)		(0)
+#define pgd_clear(pgdp)		do { } while (0)
+
+#define kern_addr_valid(addr)	(1)
+#define pmd_page_vaddr(pmd)	pmd_val(pmd)
+
+#define pte_none(pte)		(!(pte_val(pte) & ~_PAGE_GLOBAL))
+#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
+
+#define PAGE_NONE	__pgprot(_PAGE_PRESENT | _PAGE_CACHE)
+#define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
+				_PAGE_CACHE)
+#define PAGE_COPY	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
+#define PAGE_READONLY	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
+#define PAGE_KERNEL	__pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
+				_PAGE_GLOBAL | _PAGE_CACHE)
+#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
+				__WRITEABLE | _PAGE_GLOBAL & ~_PAGE_CACHE)
+
+#define __P000	PAGE_NONE
+#define __P001	PAGE_READONLY
+#define __P010	PAGE_COPY
+#define __P011	PAGE_COPY
+#define __P100	PAGE_READONLY
+#define __P101	PAGE_READONLY
+#define __P110	PAGE_COPY
+#define __P111	PAGE_COPY
+
+#define __S000	PAGE_NONE
+#define __S001	PAGE_READONLY
+#define __S010	PAGE_SHARED
+#define __S011	PAGE_SHARED
+#define __S100	PAGE_READONLY
+#define __S101	PAGE_READONLY
+#define __S110	PAGE_SHARED
+#define __S111	PAGE_SHARED
+
+#define pgprot_noncached pgprot_noncached
+
+static inline pgprot_t pgprot_noncached(pgprot_t _prot)
+{
+	unsigned long prot = pgprot_val(_prot);
+
+	prot = (prot & ~_CACHE_MASK);
+
+	return __pgprot(prot);
+}
+
+#define __swp_type(x)		((x).val & 0x1f)
+#define __swp_offset(x) 	((x).val >> 10)
+#define __swp_entry(type, offset) ((swp_entry_t){(type) | ((offset) << 10)})
+
+extern unsigned long empty_zero_page;
+extern unsigned long zero_page_mask;
+
+#define ZERO_PAGE(vaddr) \
+	(virt_to_page((void *)(empty_zero_page + \
+	 (((unsigned long)(vaddr)) & zero_page_mask))))
+
+#define pgtable_cache_init()	do {} while (0)
+
+#define arch_enter_lazy_cpu_mode()	do {} while (0)
+
+static inline int pte_write(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_WRITE;
+}
+
+static inline int pte_dirty(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_MODIFIED;
+}
+
+static inline int pte_young(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_ACCESSED;
+}
+
+#define pte_special(pte)	(0)
+
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+	pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
+	return pte;
+}
+
+static inline pte_t pte_mkclean(pte_t pte)
+{
+	pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
+	return pte;
+}
+
+static inline pte_t pte_mkold(pte_t pte)
+{
+	pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
+	return pte;
+}
+
+static inline pte_t pte_mkwrite(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_WRITE;
+	if (pte_val(pte) & _PAGE_MODIFIED)
+		pte_val(pte) |= _PAGE_SILENT_WRITE;
+	return pte;
+}
+
+static inline pte_t pte_mkdirty(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_MODIFIED;
+	if (pte_val(pte) & _PAGE_WRITE)
+		pte_val(pte) |= _PAGE_SILENT_WRITE;
+	return pte;
+}
+
+static inline pte_t pte_mkyoung(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_ACCESSED;
+	if (pte_val(pte) & _PAGE_READ)
+		pte_val(pte) |= _PAGE_SILENT_READ;
+	return pte;
+}
+
+#define set_pmd(pmdptr, pmdval)		\
+	 do { *(pmdptr) = (pmdval); } while (0)
+#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
+
+extern unsigned long pgd_current;
+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+extern void paging_init(void);
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+	return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
+}
+
+extern void __update_tlb(struct vm_area_struct *vma,
+	unsigned long address,	pte_t pte);
+extern void __update_cache(struct vm_area_struct *vma,
+	unsigned long address,	pte_t pte);
+
+static inline void update_mmu_cache(struct vm_area_struct *vma,
+	unsigned long address, pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	__update_tlb(vma, address, pte);
+	__update_cache(vma, address, pte);
+}
+
+#ifndef __ASSEMBLY__
+#include <asm-generic/pgtable.h>
+
+void setup_memory(void);
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_PGTABLE_H */

arch/score/include/asm/processor.h

@@ -0,0 +1,105 @@
+#ifndef _ASM_SCORE_PROCESSOR_H
+#define _ASM_SCORE_PROCESSOR_H
+
+#include <linux/cpumask.h>
+#include <linux/threads.h>
+
+#include <asm/segment.h>
+
+struct task_struct;
+
+/*
+ * System setup and hardware flags..
+ */
+extern void (*cpu_wait)(void);
+
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+extern void start_thread(struct pt_regs *regs,
+			unsigned long pc, unsigned long sp);
+extern unsigned long get_wchan(struct task_struct *p);
+
+/*
+ * Return current * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l; })
+
+#define cpu_relax()		barrier()
+#define cpu_relax_lowlatency()        cpu_relax()
+#define release_thread(thread)	do {} while (0)
+
+/*
+ * User space process size: 2GB. This is hardcoded into a few places,
+ * so don't change it unless you know what you are doing.
+ */
+#define TASK_SIZE	0x7fff8000UL
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE	((TASK_SIZE / 3) & ~(PAGE_SIZE))
+
+#ifdef __KERNEL__
+#define STACK_TOP	TASK_SIZE
+#define STACK_TOP_MAX	TASK_SIZE
+#endif
+
+/*
+ * If you change thread_struct remember to change the #defines below too!
+ */
+struct thread_struct {
+	unsigned long reg0, reg2, reg3;
+	unsigned long reg12, reg13, reg14, reg15, reg16;
+	unsigned long reg17, reg18, reg19, reg20, reg21;
+
+	unsigned long cp0_psr;
+	unsigned long cp0_ema;		/* Last user fault */
+	unsigned long cp0_badvaddr;	/* Last user fault */
+	unsigned long cp0_baduaddr;	/* Last kernel fault accessing USEG */
+	unsigned long error_code;
+	unsigned long trap_no;
+
+	unsigned long mflags;
+	unsigned long reg29;
+
+	unsigned long single_step;
+	unsigned long ss_nextcnt;
+
+	unsigned long insn1_type;
+	unsigned long addr1;
+	unsigned long insn1;
+
+	unsigned long insn2_type;
+	unsigned long addr2;
+	unsigned long insn2;
+
+	mm_segment_t current_ds;
+};
+
+#define INIT_THREAD {						\
+	.reg0			= 0,				\
+	.reg2			= 0,				\
+	.reg3			= 0,				\
+	.reg12			= 0,				\
+	.reg13			= 0,				\
+	.reg14			= 0,				\
+	.reg15			= 0,				\
+	.reg16			= 0,				\
+	.reg17			= 0,				\
+	.reg18			= 0,				\
+	.reg19			= 0,				\
+	.reg20			= 0,				\
+	.reg21			= 0,				\
+	.cp0_psr		= 0,				\
+	.error_code		= 0,				\
+	.trap_no		= 0,				\
+}
+
+#define kstk_tos(tsk)		\
+	((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
+#define task_pt_regs(tsk)	((struct pt_regs *)kstk_tos(tsk) - 1)
+
+#define KSTK_EIP(tsk)		(task_pt_regs(tsk)->cp0_epc)
+#define KSTK_ESP(tsk)		(task_pt_regs(tsk)->regs[29])
+
+#endif /* _ASM_SCORE_PROCESSOR_H */

arch/score/include/asm/ptrace.h

@@ -0,0 +1,25 @@
+#ifndef _ASM_SCORE_PTRACE_H
+#define _ASM_SCORE_PTRACE_H
+
+#include <uapi/asm/ptrace.h>
+
+
+struct task_struct;
+
+/*
+ * Does the process account for user or for system time?
+ */
+#define user_mode(regs) 	((regs->cp0_psr & 8) == 8)
+
+#define instruction_pointer(regs)	((unsigned long)(regs)->cp0_epc)
+#define profile_pc(regs)		instruction_pointer(regs)
+#define user_stack_pointer(r)		((unsigned long)(r)->regs[0])
+
+extern void do_syscall_trace(struct pt_regs *regs, int entryexit);
+extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
+extern int read_tsk_short(struct task_struct *, unsigned long,
+			 unsigned short *);
+
+#define arch_has_single_step()	(1)
+
+#endif /* _ASM_SCORE_PTRACE_H */

arch/score/include/asm/scoreregs.h

@@ -0,0 +1,51 @@
+#ifndef _ASM_SCORE_SCOREREGS_H
+#define _ASM_SCORE_SCOREREGS_H
+
+#include <linux/linkage.h>
+
+/* TIMER register */
+#define TIME0BASE		0x96080000
+#define P_TIMER0_CTRL		(TIME0BASE + 0x00)
+#define P_TIMER0_CPP_CTRL	(TIME0BASE + 0x04)
+#define P_TIMER0_PRELOAD	(TIME0BASE + 0x08)
+#define P_TIMER0_CPP_REG	(TIME0BASE + 0x0C)
+#define P_TIMER0_UPCNT		(TIME0BASE + 0x10)
+
+/* Timer Controller Register */
+/* bit 0 Timer enable */
+#define TMR_DISABLE	0x0000
+#define TMR_ENABLE	0x0001
+
+/* bit 1 Interrupt enable */
+#define TMR_IE_DISABLE	0x0000
+#define TMR_IE_ENABLE	0x0002
+
+/* bit 2 Output enable */
+#define TMR_OE_DISABLE	0x0004
+#define TMR_OE_ENABLE	0x0000
+
+/* bit4 Up/Down counting selection */
+#define TMR_UD_DOWN	0x0000
+#define TMR_UD_UP	0x0010
+
+/* bit5 Up/Down counting control selection */
+#define TMR_UDS_UD	0x0000
+#define TMR_UDS_EXTUD	0x0020
+
+/* bit6 Time output mode */
+#define TMR_OM_TOGGLE	0x0000
+#define TMR_OM_PILSE	0x0040
+
+/* bit 8..9 External input active edge selection */
+#define TMR_ES_PE	0x0000
+#define TMR_ES_NE	0x0100
+#define TMR_ES_BOTH	0x0200
+
+/* bit 10..11 Operating mode */
+#define TMR_M_FREE	0x0000 /* free running timer mode */
+#define TMR_M_PERIODIC	0x0400 /* periodic timer mode */
+#define TMR_M_FC	0x0800 /* free running counter mode */
+#define TMR_M_PC	0x0c00 /* periodic counter mode */
+
+#define SYSTEM_CLOCK		(27*1000000/4)		/* 27 MHz */
+#endif /* _ASM_SCORE_SCOREREGS_H */

arch/score/include/asm/segment.h

@@ -0,0 +1,21 @@
+#ifndef _ASM_SCORE_SEGMENT_H
+#define _ASM_SCORE_SEGMENT_H
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+	unsigned long seg;
+} mm_segment_t;
+
+#define KERNEL_DS	((mm_segment_t){0})
+#define USER_DS	KERNEL_DS
+
+# define get_ds()	(KERNEL_DS)
+# define get_fs()	(current_thread_info()->addr_limit)
+# define set_fs(x)	\
+	do { current_thread_info()->addr_limit = (x); } while (0)
+
+# define segment_eq(a, b)	((a).seg == (b).seg)
+
+# endif /* __ASSEMBLY__ */
+#endif /* _ASM_SCORE_SEGMENT_H */

arch/score/include/asm/setup.h

@@ -0,0 +1,36 @@
+#ifndef _ASM_SCORE_SETUP_H
+#define _ASM_SCORE_SETUP_H
+
+#include <uapi/asm/setup.h>
+
+
+extern void pagetable_init(void);
+extern void pgd_init(unsigned long page);
+
+extern void setup_early_printk(void);
+extern void cpu_cache_init(void);
+extern void tlb_init(void);
+
+extern void handle_nmi(void);
+extern void handle_adelinsn(void);
+extern void handle_adedata(void);
+extern void handle_ibe(void);
+extern void handle_pel(void);
+extern void handle_sys(void);
+extern void handle_ccu(void);
+extern void handle_ri(void);
+extern void handle_tr(void);
+extern void handle_ades(void);
+extern void handle_cee(void);
+extern void handle_cpe(void);
+extern void handle_dve(void);
+extern void handle_dbe(void);
+extern void handle_reserved(void);
+extern void handle_tlb_refill(void);
+extern void handle_tlb_invaild(void);
+extern void handle_mod(void);
+extern void debug_exception_vector(void);
+extern void general_exception_vector(void);
+extern void interrupt_exception_vector(void);
+
+#endif /* _ASM_SCORE_SETUP_H */

arch/score/include/asm/shmparam.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SHMPARAM_H
+#define _ASM_SCORE_SHMPARAM_H
+
+#include <asm-generic/shmparam.h>
+
+#endif /* _ASM_SCORE_SHMPARAM_H */

arch/score/include/asm/string.h

@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_STRING_H
+#define _ASM_SCORE_STRING_H
+
+extern void *memset(void *__s, int __c, size_t __count);
+extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+
+#endif /* _ASM_SCORE_STRING_H */

arch/score/include/asm/switch_to.h

@@ -0,0 +1,11 @@
+#ifndef _ASM_SCORE_SWITCH_TO_H
+#define _ASM_SCORE_SWITCH_TO_H
+
+extern void *resume(void *last, void *next, void *next_ti);
+
+#define switch_to(prev, next, last)				\
+do {								\
+	(last) = resume(prev, next, task_thread_info(next));	\
+} while (0)
+
+#endif /* _ASM_SCORE_SWITCH_TO_H */

arch/score/include/asm/syscalls.h

@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_SYSCALLS_H
+#define _ASM_SCORE_SYSCALLS_H
+
+asmlinkage long score_rt_sigreturn(struct pt_regs *regs);
+
+#include <asm-generic/syscalls.h>
+
+#endif /* _ASM_SCORE_SYSCALLS_H */

arch/score/include/asm/thread_info.h

@@ -0,0 +1,92 @@
+#ifndef _ASM_SCORE_THREAD_INFO_H
+#define _ASM_SCORE_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#define KU_MASK	0x08
+#define KU_USER	0x08
+#define KU_KERN	0x00
+
+#include <asm/page.h>
+#include <linux/const.h>
+
+/* thread information allocation */
+#define THREAD_SIZE_ORDER	(1)
+#define THREAD_SIZE		(PAGE_SIZE << THREAD_SIZE_ORDER)
+#define THREAD_MASK		(THREAD_SIZE - _AC(1,UL))
+
+#ifndef __ASSEMBLY__
+
+#include <asm/processor.h>
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants
+ *   must also be changed
+ */
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	unsigned long		flags;		/* low level flags */
+	unsigned long		tp_value;	/* thread pointer */
+	__u32			cpu;		/* current CPU */
+
+	/* 0 => preemptable, < 0 => BUG */
+	int			preempt_count;
+
+	/*
+	 * thread address space:
+	 * 0-0xBFFFFFFF for user-thead
+	 * 0-0xFFFFFFFF for kernel-thread
+	 */
+	mm_segment_t		addr_limit;
+	struct pt_regs		*regs;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.cpu		= 0,			\
+	.preempt_count	= 1,			\
+	.addr_limit	= KERNEL_DS,		\
+}
+
+#define init_thread_info	(init_thread_union.thread_info)
+#define init_stack		(init_thread_union.stack)
+
+/* How to get the thread information struct from C. */
+register struct thread_info *__current_thread_info __asm__("r28");
+#define current_thread_info()	__current_thread_info
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to
+ *   access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_SIGPENDING		1	/* signal pending */
+#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
+#define TIF_NOTIFY_RESUME	5	/* callback before returning to user */
+#define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
+#define TIF_MEMDIE		18	/* is terminating due to OOM killer */
+
+#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
+
+#define _TIF_WORK_MASK		(0x0000ffff)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_SCORE_THREAD_INFO_H */

arch/score/include/asm/timex.h

@@ -0,0 +1,8 @@
+#ifndef _ASM_SCORE_TIMEX_H
+#define _ASM_SCORE_TIMEX_H
+
+#define CLOCK_TICK_RATE 27000000 /* Timer input freq. */
+
+#include <asm-generic/timex.h>
+
+#endif /* _ASM_SCORE_TIMEX_H */

arch/score/include/asm/tlb.h

@@ -0,0 +1,17 @@
+#ifndef _ASM_SCORE_TLB_H
+#define _ASM_SCORE_TLB_H
+
+/*
+ * SCORE doesn't need any special per-pte or per-vma handling, except
+ * we need to flush cache for area to be unmapped.
+ */
+#define tlb_start_vma(tlb, vma)		do {} while (0)
+#define tlb_end_vma(tlb, vma)		do {} while (0)
+#define __tlb_remove_tlb_entry(tlb, ptep, address) do {} while (0)
+#define tlb_flush(tlb)			flush_tlb_mm((tlb)->mm)
+
+extern void score7_FTLB_refill_Handler(void);
+
+#include <asm-generic/tlb.h>
+
+#endif /* _ASM_SCORE_TLB_H */

arch/score/include/asm/tlbflush.h

@@ -0,0 +1,142 @@
+#ifndef _ASM_SCORE_TLBFLUSH_H
+#define _ASM_SCORE_TLBFLUSH_H
+
+#include <linux/mm.h>
+
+/*
+ * TLB flushing:
+ *
+ * - flush_tlb_all() flushes all processes TLB entries
+ * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
+ * - flush_tlb_page(vma, vmaddr) flushes one page
+ * - flush_tlb_range(vma, start, end) flushes a range of pages
+ * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
+ */
+extern void local_flush_tlb_all(void);
+extern void local_flush_tlb_mm(struct mm_struct *mm);
+extern void local_flush_tlb_range(struct vm_area_struct *vma,
+	unsigned long start, unsigned long end);
+extern void local_flush_tlb_kernel_range(unsigned long start,
+	unsigned long end);
+extern void local_flush_tlb_page(struct vm_area_struct *vma,
+	unsigned long page);
+extern void local_flush_tlb_one(unsigned long vaddr);
+
+#define flush_tlb_all()			local_flush_tlb_all()
+#define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
+#define flush_tlb_range(vma, vmaddr, end) \
+	local_flush_tlb_range(vma, vmaddr, end)
+#define flush_tlb_kernel_range(vmaddr, end) \
+	local_flush_tlb_kernel_range(vmaddr, end)
+#define flush_tlb_page(vma, page)	local_flush_tlb_page(vma, page)
+#define flush_tlb_one(vaddr)		local_flush_tlb_one(vaddr)
+
+#ifndef __ASSEMBLY__
+
+static inline unsigned long pevn_get(void)
+{
+	unsigned long val;
+
+	__asm__ __volatile__(
+		"mfcr %0, cr11\n"
+		"nop\nnop\n"
+		: "=r" (val));
+
+	return val;
+}
+
+static inline void pevn_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr11\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (val));
+}
+
+static inline void pectx_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr12\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (val));
+}
+
+static inline unsigned long pectx_get(void)
+{
+	unsigned long val;
+	__asm__ __volatile__(
+		"mfcr %0, cr12\n"
+		"nop\nnop\n"
+	: "=r" (val));
+	return val;
+}
+static inline unsigned long tlblock_get(void)
+{
+	unsigned long val;
+
+	__asm__ __volatile__(
+		"mfcr %0, cr7\n"
+		"nop\nnop\n"
+	: "=r" (val));
+	return val;
+}
+static inline void tlblock_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr7\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+	: : "r" (val));
+}
+
+static inline void tlbpt_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr8\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		: : "r" (val));
+}
+
+static inline long tlbpt_get(void)
+{
+	long val;
+
+	__asm__ __volatile__(
+		"mfcr %0, cr8\n"
+		"nop\nnop\n"
+		: "=r" (val));
+
+	return val;
+}
+
+static inline void peaddr_set(unsigned long val)
+{
+	__asm__ __volatile__(
+		"mtcr %0, cr9\n"
+		"nop\nnop\nnop\nnop\nnop\n"
+		: : "r" (val));
+}
+
+/* TLB operations. */
+static inline void tlb_probe(void)
+{
+	__asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_read(void)
+{
+	__asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_write_indexed(void)
+{
+	__asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
+}
+
+static inline void tlb_write_random(void)
+{
+	__asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
+}
+
+#endif /* Not __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_TLBFLUSH_H */

arch/score/include/asm/topology.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TOPOLOGY_H
+#define _ASM_SCORE_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_SCORE_TOPOLOGY_H */

arch/score/include/asm/uaccess.h

@@ -0,0 +1,431 @@
+#ifndef __SCORE_UACCESS_H
+#define __SCORE_UACCESS_H
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/thread_info.h>
+
+#define VERIFY_READ		0
+#define VERIFY_WRITE		1
+
+#define get_ds()		(KERNEL_DS)
+#define get_fs()		(current_thread_info()->addr_limit)
+#define segment_eq(a, b)	((a).seg == (b).seg)
+
+/*
+ * Is a address valid? This does a straighforward calculation rather
+ * than tests.
+ *
+ * Address valid if:
+ *  - "addr" doesn't have any high-bits set
+ *  - AND "size" doesn't have any high-bits set
+ *  - AND "addr+size" doesn't have any high-bits set
+ *  - OR we are in kernel mode.
+ *
+ * __ua_size() is a trick to avoid runtime checking of positive constant
+ * sizes; for those we already know at compile time that the size is ok.
+ */
+#define __ua_size(size)							\
+	((__builtin_constant_p(size) && (signed long) (size) > 0) ? 0 : (size))
+
+/*
+ * access_ok: - Checks if a user space pointer is valid
+ * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE.  Note that
+ *        %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
+ *        to write to a block, it is always safe to read from it.
+ * @addr: User space pointer to start of block to check
+ * @size: Size of block to check
+ *
+ * Context: User context only. This function may sleep if pagefaults are
+ *          enabled.
+ *
+ * Checks if a pointer to a block of memory in user space is valid.
+ *
+ * Returns true (nonzero) if the memory block may be valid, false (zero)
+ * if it is definitely invalid.
+ *
+ * Note that, depending on architecture, this function probably just
+ * checks that the pointer is in the user space range - after calling
+ * this function, memory access functions may still return -EFAULT.
+ */
+
+#define __access_ok(addr, size)					\
+	(((long)((get_fs().seg) &				\
+		 ((addr) | ((addr) + (size)) |			\
+		  __ua_size(size)))) == 0)
+
+#define access_ok(type, addr, size)				\
+	likely(__access_ok((unsigned long)(addr), (size)))
+
+/*
+ * put_user: - Write a simple value into user space.
+ * @x:   Value to copy to user space.
+ * @ptr: Destination address, in user space.
+ *
+ * Context: User context only. This function may sleep if pagefaults are
+ *          enabled.
+ *
+ * This macro copies a single simple value from kernel space to user
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and @x must be assignable
+ * to the result of dereferencing @ptr.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ */
+#define put_user(x, ptr) __put_user_check((x), (ptr), sizeof(*(ptr)))
+
+/*
+ * get_user: - Get a simple variable from user space.
+ * @x:   Variable to store result.
+ * @ptr: Source address, in user space.
+ *
+ * Context: User context only. This function may sleep if pagefaults are
+ *          enabled.
+ *
+ * This macro copies a single simple variable from user space to kernel
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and the result of
+ * dereferencing @ptr must be assignable to @x without a cast.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ * On error, the variable @x is set to zero.
+ */
+#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)))
+
+/*
+ * __put_user: - Write a simple value into user space, with less checking.
+ * @x:   Value to copy to user space.
+ * @ptr: Destination address, in user space.
+ *
+ * Context: User context only. This function may sleep if pagefaults are
+ *          enabled.
+ *
+ * This macro copies a single simple value from kernel space to user
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and @x must be assignable
+ * to the result of dereferencing @ptr.
+ *
+ * Caller must check the pointer with access_ok() before calling this
+ * function.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ */
+#define __put_user(x, ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
+
+/*
+ * __get_user: - Get a simple variable from user space, with less checking.
+ * @x:   Variable to store result.
+ * @ptr: Source address, in user space.
+ *
+ * Context: User context only. This function may sleep if pagefaults are
+ *          enabled.
+ *
+ * This macro copies a single simple variable from user space to kernel
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and the result of
+ * dereferencing @ptr must be assignable to @x without a cast.
+ *
+ * Caller must check the pointer with access_ok() before calling this
+ * function.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ * On error, the variable @x is set to zero.
+ */
+#define __get_user(x, ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
+
+struct __large_struct { unsigned long buf[100]; };
+#define __m(x) (*(struct __large_struct __user *)(x))
+
+/*
+ * Yuck.  We need two variants, one for 64bit operation and one
+ * for 32 bit mode and old iron.
+ */
+extern void __get_user_unknown(void);
+
+#define __get_user_common(val, size, ptr)				\
+do {									\
+	switch (size) {							\
+	case 1:								\
+		__get_user_asm(val, "lb", ptr);				\
+		break;							\
+	case 2:								\
+		__get_user_asm(val, "lh", ptr);				\
+		 break;							\
+	case 4:								\
+		__get_user_asm(val, "lw", ptr);				\
+		 break;							\
+	case 8: 							\
+		if (__copy_from_user((void *)&val, ptr, 8) == 0)	\
+			__gu_err = 0;					\
+		else							\
+			__gu_err = -EFAULT;				\
+		break;							\
+	default:							\
+		__get_user_unknown();					\
+		break;							\
+	}								\
+} while (0)
+
+#define __get_user_nocheck(x, ptr, size)				\
+({									\
+	long __gu_err = 0;						\
+	__get_user_common((x), size, ptr);				\
+	__gu_err;							\
+})
+
+#define __get_user_check(x, ptr, size)					\
+({									\
+	long __gu_err = -EFAULT;					\
+	const __typeof__(*(ptr)) __user *__gu_ptr = (ptr);		\
+									\
+	if (likely(access_ok(VERIFY_READ, __gu_ptr, size)))		\
+		__get_user_common((x), size, __gu_ptr);			\
+	else								\
+		(x) = 0;						\
+									\
+	__gu_err;							\
+})
+
+#define __get_user_asm(val, insn, addr)					\
+{									\
+	long __gu_tmp;							\
+									\
+	__asm__ __volatile__(						\
+		"1:" insn " %1, %3\n"					\
+		"2:\n"							\
+		".section .fixup,\"ax\"\n"				\
+		"3:li	%0, %4\n"					\
+		"li	%1, 0\n"					\
+		"j	2b\n"						\
+		".previous\n"						\
+		".section __ex_table,\"a\"\n"				\
+		".word	1b, 3b\n"					\
+		".previous\n"						\
+		: "=r" (__gu_err), "=r" (__gu_tmp)			\
+		: "0" (0), "o" (__m(addr)), "i" (-EFAULT));		\
+									\
+		(val) = (__typeof__(*(addr))) __gu_tmp;			\
+}
+
+/*
+ * Yuck.  We need two variants, one for 64bit operation and one
+ * for 32 bit mode and old iron.
+ */
+#define __put_user_nocheck(val, ptr, size)				\
+({									\
+	__typeof__(*(ptr)) __pu_val;					\
+	long __pu_err = 0;						\
+									\
+	__pu_val = (val);						\
+	switch (size) {							\
+	case 1:								\
+		__put_user_asm("sb", ptr);				\
+		break;							\
+	case 2:								\
+		__put_user_asm("sh", ptr);				\
+		break;							\
+	case 4:								\
+		__put_user_asm("sw", ptr);				\
+		break;							\
+	case 8: 							\
+		if ((__copy_to_user((void *)ptr, &__pu_val, 8)) == 0)	\
+			__pu_err = 0;					\
+		else							\
+			__pu_err = -EFAULT;				\
+		break;							\
+	default:							\
+		 __put_user_unknown();					\
+		 break;							\
+	}								\
+	__pu_err;							\
+})
+
+
+#define __put_user_check(val, ptr, size)				\
+({									\
+	__typeof__(*(ptr)) __user *__pu_addr = (ptr);			\
+	__typeof__(*(ptr)) __pu_val = (val);				\
+	long __pu_err = -EFAULT;					\
+									\
+	if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) {		\
+		switch (size) {						\
+		case 1:							\
+			__put_user_asm("sb", __pu_addr);		\
+			break;						\
+		case 2:							\
+			__put_user_asm("sh", __pu_addr);		\
+			break;						\
+		case 4:							\
+			__put_user_asm("sw", __pu_addr);		\
+			break;						\
+		case 8: 						\
+			if ((__copy_to_user((void *)__pu_addr, &__pu_val, 8)) == 0)\
+				__pu_err = 0;				\
+			else						\
+				__pu_err = -EFAULT;			\
+			break;						\
+		default:						\
+			__put_user_unknown();				\
+			break;						\
+		}							\
+	}								\
+	__pu_err;							\
+})
+
+#define __put_user_asm(insn, ptr)					\
+	__asm__ __volatile__(						\
+		"1:" insn " %2, %3\n"					\
+		"2:\n"							\
+		".section .fixup,\"ax\"\n"				\
+		"3:li %0, %4\n"						\
+		"j 2b\n"						\
+		".previous\n"						\
+		".section __ex_table,\"a\"\n"				\
+		".word 1b, 3b\n"					\
+		".previous\n"						\
+		: "=r" (__pu_err)					\
+		: "0" (0), "r" (__pu_val), "o" (__m(ptr)),		\
+		  "i" (-EFAULT));
+
+extern void __put_user_unknown(void);
+extern int __copy_tofrom_user(void *to, const void *from, unsigned long len);
+
+static inline unsigned long
+copy_from_user(void *to, const void *from, unsigned long len)
+{
+	unsigned long res = len;
+
+	if (likely(access_ok(VERIFY_READ, from, len)))
+		res = __copy_tofrom_user(to, from, len);
+
+	if (unlikely(res))
+		memset(to + (len - res), 0, res);
+
+	return res;
+}
+
+static inline unsigned long
+copy_to_user(void *to, const void *from, unsigned long len)
+{
+	if (likely(access_ok(VERIFY_WRITE, to, len)))
+		len = __copy_tofrom_user(to, from, len);
+
+	return len;
+}
+
+static inline unsigned long
+__copy_from_user(void *to, const void *from, unsigned long len)
+{
+	unsigned long left = __copy_tofrom_user(to, from, len);
+	if (unlikely(left))
+		memset(to + (len - left), 0, left);
+	return left;
+}
+
+#define __copy_to_user(to, from, len)		\
+		__copy_tofrom_user((to), (from), (len))
+
+static inline unsigned long
+__copy_to_user_inatomic(void *to, const void *from, unsigned long len)
+{
+	return __copy_to_user(to, from, len);
+}
+
+static inline unsigned long
+__copy_from_user_inatomic(void *to, const void *from, unsigned long len)
+{
+	return __copy_tofrom_user(to, from, len);
+}
+
+#define __copy_in_user(to, from, len)	__copy_tofrom_user(to, from, len)
+
+static inline unsigned long
+copy_in_user(void *to, const void *from, unsigned long len)
+{
+	if (access_ok(VERIFY_READ, from, len) &&
+		      access_ok(VERFITY_WRITE, to, len))
+		return __copy_tofrom_user(to, from, len);
+}
+
+/*
+ * __clear_user: - Zero a block of memory in user space, with less checking.
+ * @to:   Destination address, in user space.
+ * @n:    Number of bytes to zero.
+ *
+ * Zero a block of memory in user space.  Caller must check
+ * the specified block with access_ok() before calling this function.
+ *
+ * Returns number of bytes that could not be cleared.
+ * On success, this will be zero.
+ */
+extern unsigned long __clear_user(void __user *src, unsigned long size);
+
+static inline unsigned long clear_user(char *src, unsigned long size)
+{
+	if (access_ok(VERIFY_WRITE, src, size))
+		return __clear_user(src, size);
+
+	return -EFAULT;
+}
+/*
+ * __strncpy_from_user: - Copy a NUL terminated string from userspace, with less checking.
+ * @dst:   Destination address, in kernel space.  This buffer must be at
+ *         least @count bytes long.
+ * @src:   Source address, in user space.
+ * @count: Maximum number of bytes to copy, including the trailing NUL.
+ *
+ * Copies a NUL-terminated string from userspace to kernel space.
+ * Caller must check the specified block with access_ok() before calling
+ * this function.
+ *
+ * On success, returns the length of the string (not including the trailing
+ * NUL).
+ *
+ * If access to userspace fails, returns -EFAULT (some data may have been
+ * copied).
+ *
+ * If @count is smaller than the length of the string, copies @count bytes
+ * and returns @count.
+ */
+extern int __strncpy_from_user(char *dst, const char *src, long len);
+
+static inline int strncpy_from_user(char *dst, const char *src, long len)
+{
+	if (access_ok(VERIFY_READ, src, 1))
+		return __strncpy_from_user(dst, src, len);
+
+	return -EFAULT;
+}
+
+extern int __strlen_user(const char *src);
+static inline long strlen_user(const char __user *src)
+{
+	return __strlen_user(src);
+}
+
+extern int __strnlen_user(const char *str, long len);
+static inline long strnlen_user(const char __user *str, long len)
+{
+	if (!access_ok(VERIFY_READ, str, 0))
+		return 0;
+	else		
+		return __strnlen_user(str, len);
+}
+
+struct exception_table_entry {
+	unsigned long insn;
+	unsigned long fixup;
+};
+
+extern int fixup_exception(struct pt_regs *regs);
+
+#endif /* __SCORE_UACCESS_H */
+

arch/score/include/asm/ucontext.h

@@ -0,0 +1 @@
+#include <asm-generic/ucontext.h>

arch/score/include/asm/unaligned.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_UNALIGNED_H
+#define _ASM_SCORE_UNALIGNED_H
+
+#include <asm-generic/unaligned.h>
+
+#endif /* _ASM_SCORE_UNALIGNED_H */

arch/score/include/asm/user.h

@@ -0,0 +1,21 @@
+#ifndef _ASM_SCORE_USER_H
+#define _ASM_SCORE_USER_H
+
+struct user_regs_struct {
+	unsigned long regs[32];
+
+	unsigned long cel;
+	unsigned long ceh;
+
+	unsigned long sr0;	/* cnt */
+	unsigned long sr1;	/* lcr */
+	unsigned long sr2;	/* scr */
+
+	unsigned long cp0_epc;
+	unsigned long cp0_ema;
+	unsigned long cp0_psr;
+	unsigned long cp0_ecr;
+	unsigned long cp0_condition;
+};
+
+#endif /* _ASM_SCORE_USER_H */

arch/score/include/uapi/asm/Kbuild

@@ -0,0 +1,34 @@
+# UAPI Header export list
+include include/uapi/asm-generic/Kbuild.asm
+
+header-y += auxvec.h
+header-y += bitsperlong.h
+header-y += byteorder.h
+header-y += errno.h
+header-y += fcntl.h
+header-y += ioctl.h
+header-y += ioctls.h
+header-y += ipcbuf.h
+header-y += kvm_para.h
+header-y += mman.h
+header-y += msgbuf.h
+header-y += param.h
+header-y += poll.h
+header-y += posix_types.h
+header-y += ptrace.h
+header-y += resource.h
+header-y += sembuf.h
+header-y += setup.h
+header-y += shmbuf.h
+header-y += sigcontext.h
+header-y += siginfo.h
+header-y += signal.h
+header-y += socket.h
+header-y += sockios.h
+header-y += stat.h
+header-y += statfs.h
+header-y += swab.h
+header-y += termbits.h
+header-y += termios.h
+header-y += types.h
+header-y += unistd.h

arch/score/include/uapi/asm/auxvec.h

@@ -0,0 +1,4 @@
+#ifndef _ASM_SCORE_AUXVEC_H
+#define _ASM_SCORE_AUXVEC_H
+
+#endif /* _ASM_SCORE_AUXVEC_H */

arch/score/include/uapi/asm/bitsperlong.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BITSPERLONG_H
+#define _ASM_SCORE_BITSPERLONG_H
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _ASM_SCORE_BITSPERLONG_H */

arch/score/include/uapi/asm/byteorder.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_BYTEORDER_H
+#define _ASM_SCORE_BYTEORDER_H
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _ASM_SCORE_BYTEORDER_H */

arch/score/include/uapi/asm/errno.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_ERRNO_H
+#define _ASM_SCORE_ERRNO_H
+
+#include <asm-generic/errno.h>
+
+#endif /* _ASM_SCORE_ERRNO_H */

arch/score/include/uapi/asm/fcntl.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_FCNTL_H
+#define _ASM_SCORE_FCNTL_H
+
+#include <asm-generic/fcntl.h>
+
+#endif /* _ASM_SCORE_FCNTL_H */

arch/score/include/uapi/asm/ioctl.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IOCTL_H
+#define _ASM_SCORE_IOCTL_H
+
+#include <asm-generic/ioctl.h>
+
+#endif /* _ASM_SCORE_IOCTL_H */

arch/score/include/uapi/asm/ioctls.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IOCTLS_H
+#define _ASM_SCORE_IOCTLS_H
+
+#include <asm-generic/ioctls.h>
+
+#endif /* _ASM_SCORE_IOCTLS_H */

arch/score/include/uapi/asm/ipcbuf.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_IPCBUF_H
+#define _ASM_SCORE_IPCBUF_H
+
+#include <asm-generic/ipcbuf.h>
+
+#endif /* _ASM_SCORE_IPCBUF_H */

arch/score/include/uapi/asm/kvm_para.h

@@ -0,0 +1 @@
+#include <asm-generic/kvm_para.h>

arch/score/include/uapi/asm/mman.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MMAN_H
+#define _ASM_SCORE_MMAN_H
+
+#include <asm-generic/mman.h>
+
+#endif /* _ASM_SCORE_MMAN_H */

arch/score/include/uapi/asm/msgbuf.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_MSGBUF_H
+#define _ASM_SCORE_MSGBUF_H
+
+#include <asm-generic/msgbuf.h>
+
+#endif /* _ASM_SCORE_MSGBUF_H */

arch/score/include/uapi/asm/param.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_PARAM_H
+#define _ASM_SCORE_PARAM_H
+
+#include <asm-generic/param.h>
+
+#endif /* _ASM_SCORE_PARAM_H */

arch/score/include/uapi/asm/poll.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_POLL_H
+#define _ASM_SCORE_POLL_H
+
+#include <asm-generic/poll.h>
+
+#endif /* _ASM_SCORE_POLL_H */

arch/score/include/uapi/asm/posix_types.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_POSIX_TYPES_H
+#define _ASM_SCORE_POSIX_TYPES_H
+
+#include <asm-generic/posix_types.h>
+
+#endif /* _ASM_SCORE_POSIX_TYPES_H */

arch/score/include/uapi/asm/ptrace.h

@@ -0,0 +1,65 @@
+#ifndef _UAPI_ASM_SCORE_PTRACE_H
+#define _UAPI_ASM_SCORE_PTRACE_H
+
+#define PTRACE_GETREGS		12
+#define PTRACE_SETREGS		13
+
+#define SINGLESTEP16_INSN	0x7006
+#define SINGLESTEP32_INSN	0x840C8000
+#define BREAKPOINT16_INSN	0x7002		/* work on SPG300 */
+#define BREAKPOINT32_INSN	0x84048000	/* work on SPG300 */
+
+/* Define instruction mask */
+#define INSN32_MASK	0x80008000
+
+#define J32	0x88008000	/* 1_00010_0000000000_1_000000000000000 */
+#define J32M	0xFC008000	/* 1_11111_0000000000_1_000000000000000 */
+
+#define B32	0x90008000	/* 1_00100_0000000000_1_000000000000000 */
+#define B32M	0xFC008000
+#define BL32	0x90008001	/* 1_00100_0000000000_1_000000000000001 */
+#define BL32M	B32
+#define BR32	0x80008008	/* 1_00000_0000000000_1_00000000_000100_0 */
+#define BR32M	0xFFE0807E
+#define BRL32	0x80008009	/* 1_00000_0000000000_1_00000000_000100_1 */
+#define BRL32M	BR32M
+
+#define B32_SET	(J32 | B32 | BL32 | BR32 | BRL32)
+
+#define J16	0x3000		/* 0_011_....... */
+#define J16M	0xF000
+#define B16	0x4000		/* 0_100_....... */
+#define B16M	0xF000
+#define BR16	0x0004		/* 0_000.......0100 */
+#define BR16M	0xF00F
+#define B16_SET (J16 | B16 | BR16)
+
+
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call/exception. As usual the registers k0/k1 aren't being saved.
+ */
+struct pt_regs {
+	unsigned long pad0[6];	/* stack arguments */
+	unsigned long orig_r4;
+	unsigned long orig_r7;
+	long is_syscall;
+
+	unsigned long regs[32];
+
+	unsigned long cel;
+	unsigned long ceh;
+
+	unsigned long sr0;	/* cnt */
+	unsigned long sr1;	/* lcr */
+	unsigned long sr2;	/* scr */
+
+	unsigned long cp0_epc;
+	unsigned long cp0_ema;
+	unsigned long cp0_psr;
+	unsigned long cp0_ecr;
+	unsigned long cp0_condition;
+};
+
+
+#endif /* _UAPI_ASM_SCORE_PTRACE_H */

arch/score/include/uapi/asm/resource.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_RESOURCE_H
+#define _ASM_SCORE_RESOURCE_H
+
+#include <asm-generic/resource.h>
+
+#endif /* _ASM_SCORE_RESOURCE_H */

arch/score/include/uapi/asm/sembuf.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SEMBUF_H
+#define _ASM_SCORE_SEMBUF_H
+
+#include <asm-generic/sembuf.h>
+
+#endif /* _ASM_SCORE_SEMBUF_H */

arch/score/include/uapi/asm/setup.h

@@ -0,0 +1,9 @@
+#ifndef _UAPI_ASM_SCORE_SETUP_H
+#define _UAPI_ASM_SCORE_SETUP_H
+
+#define COMMAND_LINE_SIZE	256
+#define MEMORY_START		0
+#define MEMORY_SIZE		0x2000000
+
+
+#endif /* _UAPI_ASM_SCORE_SETUP_H */

arch/score/include/uapi/asm/shmbuf.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SHMBUF_H
+#define _ASM_SCORE_SHMBUF_H
+
+#include <asm-generic/shmbuf.h>
+
+#endif /* _ASM_SCORE_SHMBUF_H */

arch/score/include/uapi/asm/sigcontext.h

@@ -0,0 +1,22 @@
+#ifndef _ASM_SCORE_SIGCONTEXT_H
+#define _ASM_SCORE_SIGCONTEXT_H
+
+/*
+ * Keep this struct definition in sync with the sigcontext fragment
+ * in arch/score/tools/offset.c
+ */
+struct sigcontext {
+	unsigned int		sc_regmask;
+	unsigned int		sc_psr;
+	unsigned int		sc_condition;
+	unsigned long		sc_pc;
+	unsigned long		sc_regs[32];
+	unsigned int		sc_ssflags;
+	unsigned int		sc_mdceh;
+	unsigned int		sc_mdcel;
+	unsigned int		sc_ecr;
+	unsigned long		sc_ema;
+	unsigned long		sc_sigset[4];
+};
+
+#endif /* _ASM_SCORE_SIGCONTEXT_H */

arch/score/include/uapi/asm/siginfo.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SIGINFO_H
+#define _ASM_SCORE_SIGINFO_H
+
+#include <asm-generic/siginfo.h>
+
+#endif /* _ASM_SCORE_SIGINFO_H */

arch/score/include/uapi/asm/signal.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SIGNAL_H
+#define _ASM_SCORE_SIGNAL_H
+
+#include <asm-generic/signal.h>
+
+#endif /* _ASM_SCORE_SIGNAL_H */

arch/score/include/uapi/asm/socket.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SOCKET_H
+#define _ASM_SCORE_SOCKET_H
+
+#include <asm-generic/socket.h>
+
+#endif /* _ASM_SCORE_SOCKET_H */

arch/score/include/uapi/asm/sockios.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SOCKIOS_H
+#define _ASM_SCORE_SOCKIOS_H
+
+#include <asm-generic/sockios.h>
+
+#endif /* _ASM_SCORE_SOCKIOS_H */

arch/score/include/uapi/asm/stat.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_STAT_H
+#define _ASM_SCORE_STAT_H
+
+#include <asm-generic/stat.h>
+
+#endif /* _ASM_SCORE_STAT_H */

arch/score/include/uapi/asm/statfs.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_STATFS_H
+#define _ASM_SCORE_STATFS_H
+
+#include <asm-generic/statfs.h>
+
+#endif /* _ASM_SCORE_STATFS_H */

arch/score/include/uapi/asm/swab.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_SWAB_H
+#define _ASM_SCORE_SWAB_H
+
+#include <asm-generic/swab.h>
+
+#endif /* _ASM_SCORE_SWAB_H */

arch/score/include/uapi/asm/termbits.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TERMBITS_H
+#define _ASM_SCORE_TERMBITS_H
+
+#include <asm-generic/termbits.h>
+
+#endif /* _ASM_SCORE_TERMBITS_H */

arch/score/include/uapi/asm/termios.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TERMIOS_H
+#define _ASM_SCORE_TERMIOS_H
+
+#include <asm-generic/termios.h>
+
+#endif /* _ASM_SCORE_TERMIOS_H */

arch/score/include/uapi/asm/types.h

@@ -0,0 +1,6 @@
+#ifndef _ASM_SCORE_TYPES_H
+#define _ASM_SCORE_TYPES_H
+
+#include <asm-generic/types.h>
+
+#endif /* _ASM_SCORE_TYPES_H */

arch/score/include/uapi/asm/unistd.h

@@ -0,0 +1,11 @@
+#define __ARCH_HAVE_MMU
+
+#define __ARCH_WANT_SYSCALL_NO_AT
+#define __ARCH_WANT_SYSCALL_NO_FLAGS
+#define __ARCH_WANT_SYSCALL_OFF_T
+#define __ARCH_WANT_SYSCALL_DEPRECATED
+#define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_SYS_FORK
+#define __ARCH_WANT_SYS_VFORK
+
+#include <asm-generic/unistd.h>

arch/score/kernel/Makefile

@@ -0,0 +1,11 @@
+#
+# Makefile for the Linux/SCORE kernel.
+#
+
+extra-y	:= head.o vmlinux.lds
+
+obj-y += entry.o irq.o process.o ptrace.o \
+	setup.o signal.o sys_score.o time.o traps.o \
+	sys_call_table.o
+
+obj-$(CONFIG_MODULES) += module.o

arch/score/kernel/asm-offsets.c

@@ -0,0 +1,214 @@
+/*
+ * arch/score/kernel/asm-offsets.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/kbuild.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+
+#include <asm-generic/cmpxchg-local.h>
+
+void output_ptreg_defines(void)
+{
+	COMMENT("SCORE pt_regs offsets.");
+	OFFSET(PT_R0, pt_regs, regs[0]);
+	OFFSET(PT_R1, pt_regs, regs[1]);
+	OFFSET(PT_R2, pt_regs, regs[2]);
+	OFFSET(PT_R3, pt_regs, regs[3]);
+	OFFSET(PT_R4, pt_regs, regs[4]);
+	OFFSET(PT_R5, pt_regs, regs[5]);
+	OFFSET(PT_R6, pt_regs, regs[6]);
+	OFFSET(PT_R7, pt_regs, regs[7]);
+	OFFSET(PT_R8, pt_regs, regs[8]);
+	OFFSET(PT_R9, pt_regs, regs[9]);
+	OFFSET(PT_R10, pt_regs, regs[10]);
+	OFFSET(PT_R11, pt_regs, regs[11]);
+	OFFSET(PT_R12, pt_regs, regs[12]);
+	OFFSET(PT_R13, pt_regs, regs[13]);
+	OFFSET(PT_R14, pt_regs, regs[14]);
+	OFFSET(PT_R15, pt_regs, regs[15]);
+	OFFSET(PT_R16, pt_regs, regs[16]);
+	OFFSET(PT_R17, pt_regs, regs[17]);
+	OFFSET(PT_R18, pt_regs, regs[18]);
+	OFFSET(PT_R19, pt_regs, regs[19]);
+	OFFSET(PT_R20, pt_regs, regs[20]);
+	OFFSET(PT_R21, pt_regs, regs[21]);
+	OFFSET(PT_R22, pt_regs, regs[22]);
+	OFFSET(PT_R23, pt_regs, regs[23]);
+	OFFSET(PT_R24, pt_regs, regs[24]);
+	OFFSET(PT_R25, pt_regs, regs[25]);
+	OFFSET(PT_R26, pt_regs, regs[26]);
+	OFFSET(PT_R27, pt_regs, regs[27]);
+	OFFSET(PT_R28, pt_regs, regs[28]);
+	OFFSET(PT_R29, pt_regs, regs[29]);
+	OFFSET(PT_R30, pt_regs, regs[30]);
+	OFFSET(PT_R31, pt_regs, regs[31]);
+
+	OFFSET(PT_ORIG_R4, pt_regs, orig_r4);
+	OFFSET(PT_ORIG_R7, pt_regs, orig_r7);
+	OFFSET(PT_CEL, pt_regs, cel);
+	OFFSET(PT_CEH, pt_regs, ceh);
+	OFFSET(PT_SR0, pt_regs, sr0);
+	OFFSET(PT_SR1, pt_regs, sr1);
+	OFFSET(PT_SR2, pt_regs, sr2);
+	OFFSET(PT_EPC, pt_regs, cp0_epc);
+	OFFSET(PT_EMA, pt_regs, cp0_ema);
+	OFFSET(PT_PSR, pt_regs, cp0_psr);
+	OFFSET(PT_ECR, pt_regs, cp0_ecr);
+	OFFSET(PT_CONDITION, pt_regs, cp0_condition);
+	OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall);
+
+	DEFINE(PT_SIZE, sizeof(struct pt_regs));
+	BLANK();
+}
+
+void output_task_defines(void)
+{
+	COMMENT("SCORE task_struct offsets.");
+	OFFSET(TASK_STATE, task_struct, state);
+	OFFSET(TASK_THREAD_INFO, task_struct, stack);
+	OFFSET(TASK_FLAGS, task_struct, flags);
+	OFFSET(TASK_MM, task_struct, mm);
+	OFFSET(TASK_PID, task_struct, pid);
+	DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
+	BLANK();
+}
+
+void output_thread_info_defines(void)
+{
+	COMMENT("SCORE thread_info offsets.");
+	OFFSET(TI_TASK, thread_info, task);
+	OFFSET(TI_FLAGS, thread_info, flags);
+	OFFSET(TI_TP_VALUE, thread_info, tp_value);
+	OFFSET(TI_CPU, thread_info, cpu);
+	OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
+	OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
+	OFFSET(TI_REGS, thread_info, regs);
+	DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
+	DEFINE(KERNEL_STACK_MASK, THREAD_MASK);
+	BLANK();
+}
+
+void output_thread_defines(void)
+{
+	COMMENT("SCORE specific thread_struct offsets.");
+	OFFSET(THREAD_REG0, task_struct, thread.reg0);
+	OFFSET(THREAD_REG2, task_struct, thread.reg2);
+	OFFSET(THREAD_REG3, task_struct, thread.reg3);
+	OFFSET(THREAD_REG12, task_struct, thread.reg12);
+	OFFSET(THREAD_REG13, task_struct, thread.reg13);
+	OFFSET(THREAD_REG14, task_struct, thread.reg14);
+	OFFSET(THREAD_REG15, task_struct, thread.reg15);
+	OFFSET(THREAD_REG16, task_struct, thread.reg16);
+	OFFSET(THREAD_REG17, task_struct, thread.reg17);
+	OFFSET(THREAD_REG18, task_struct, thread.reg18);
+	OFFSET(THREAD_REG19, task_struct, thread.reg19);
+	OFFSET(THREAD_REG20, task_struct, thread.reg20);
+	OFFSET(THREAD_REG21, task_struct, thread.reg21);
+	OFFSET(THREAD_REG29, task_struct, thread.reg29);
+
+	OFFSET(THREAD_PSR, task_struct, thread.cp0_psr);
+	OFFSET(THREAD_EMA, task_struct, thread.cp0_ema);
+	OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr);
+	OFFSET(THREAD_ECODE, task_struct, thread.error_code);
+	OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no);
+	BLANK();
+}
+
+void output_mm_defines(void)
+{
+	COMMENT("Size of struct page");
+	DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
+	BLANK();
+	COMMENT("Linux mm_struct offsets.");
+	OFFSET(MM_USERS, mm_struct, mm_users);
+	OFFSET(MM_PGD, mm_struct, pgd);
+	OFFSET(MM_CONTEXT, mm_struct, context);
+	BLANK();
+	DEFINE(_PAGE_SIZE, PAGE_SIZE);
+	DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
+	BLANK();
+	DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
+	DEFINE(_PTE_T_SIZE, sizeof(pte_t));
+	BLANK();
+	DEFINE(_PGD_ORDER, PGD_ORDER);
+	DEFINE(_PTE_ORDER, PTE_ORDER);
+	BLANK();
+	DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
+	BLANK();
+	DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
+	DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
+	BLANK();
+}
+
+void output_sc_defines(void)
+{
+	COMMENT("Linux sigcontext offsets.");
+	OFFSET(SC_REGS, sigcontext, sc_regs);
+	OFFSET(SC_MDCEH, sigcontext, sc_mdceh);
+	OFFSET(SC_MDCEL, sigcontext, sc_mdcel);
+	OFFSET(SC_PC, sigcontext, sc_pc);
+	OFFSET(SC_PSR, sigcontext, sc_psr);
+	OFFSET(SC_ECR, sigcontext, sc_ecr);
+	OFFSET(SC_EMA, sigcontext, sc_ema);
+	BLANK();
+}
+
+void output_signal_defined(void)
+{
+	COMMENT("Linux signal numbers.");
+	DEFINE(_SIGHUP, SIGHUP);
+	DEFINE(_SIGINT, SIGINT);
+	DEFINE(_SIGQUIT, SIGQUIT);
+	DEFINE(_SIGILL, SIGILL);
+	DEFINE(_SIGTRAP, SIGTRAP);
+	DEFINE(_SIGIOT, SIGIOT);
+	DEFINE(_SIGABRT, SIGABRT);
+	DEFINE(_SIGFPE, SIGFPE);
+	DEFINE(_SIGKILL, SIGKILL);
+	DEFINE(_SIGBUS, SIGBUS);
+	DEFINE(_SIGSEGV, SIGSEGV);
+	DEFINE(_SIGSYS, SIGSYS);
+	DEFINE(_SIGPIPE, SIGPIPE);
+	DEFINE(_SIGALRM, SIGALRM);
+	DEFINE(_SIGTERM, SIGTERM);
+	DEFINE(_SIGUSR1, SIGUSR1);
+	DEFINE(_SIGUSR2, SIGUSR2);
+	DEFINE(_SIGCHLD, SIGCHLD);
+	DEFINE(_SIGPWR, SIGPWR);
+	DEFINE(_SIGWINCH, SIGWINCH);
+	DEFINE(_SIGURG, SIGURG);
+	DEFINE(_SIGIO, SIGIO);
+	DEFINE(_SIGSTOP, SIGSTOP);
+	DEFINE(_SIGTSTP, SIGTSTP);
+	DEFINE(_SIGCONT, SIGCONT);
+	DEFINE(_SIGTTIN, SIGTTIN);
+	DEFINE(_SIGTTOU, SIGTTOU);
+	DEFINE(_SIGVTALRM, SIGVTALRM);
+	DEFINE(_SIGPROF, SIGPROF);
+	DEFINE(_SIGXCPU, SIGXCPU);
+	DEFINE(_SIGXFSZ, SIGXFSZ);
+	BLANK();
+}