Merge /spare/repo/linux-2.6/

55 files changed, 515 insertions, 258 deletions

diff --git a/include/asm-arm/arch-rpc/hardware.h b/include/asm-arm/arch-rpc/hardware.h
index be9754a05c1..9d7f87375aa 100644
--- a/include/asm-arm/arch-rpc/hardware.h
+++ b/include/asm-arm/arch-rpc/hardware.h
@@ -15,7 +15,7 @@
 #include <asm/arch/memory.h>
 
 #ifndef __ASSEMBLY__
-#define IOMEM(x) ((void __iomem *)(x))
+#define IOMEM(x) ((void __iomem *)(unsigned long)(x))
 #else
 #define IOMEM(x) x
 #endif /* __ASSEMBLY__ */
@@ -52,7 +52,7 @@
 /*
  * IO Addresses
  */
-#define VIDC_BASE		(void __iomem *)0xe0400000
+#define VIDC_BASE		IOMEM(0xe0400000)
 #define EXPMASK_BASE		0xe0360000
 #define IOMD_BASE		IOMEM(0xe0200000)
 #define IOC_BASE		IOMEM(0xe0200000)
diff --git a/include/asm-arm/arch-s3c2410/anubis-map.h b/include/asm-arm/arch-s3c2410/anubis-map.h
index 97741d6e506..d529ffda859 100644
--- a/include/asm-arm/arch-s3c2410/anubis-map.h
+++ b/include/asm-arm/arch-s3c2410/anubis-map.h
@@ -20,22 +20,22 @@
 
 /* start peripherals off after the S3C2410 */
 
-#define ANUBIS_IOADDR(x)	(S3C2410_ADDR((x) + 0x02000000))
+#define ANUBIS_IOADDR(x)	(S3C2410_ADDR((x) + 0x01800000))
 
 #define ANUBIS_PA_CPLD		(S3C2410_CS1 | (1<<26))
 
 /* we put the CPLD registers next, to get them out of the way */
 
-#define ANUBIS_VA_CTRL1	    ANUBIS_IOADDR(0x00000000)	 /* 0x01300000 */
+#define ANUBIS_VA_CTRL1	    ANUBIS_IOADDR(0x00000000)	 /* 0x01800000 */
 #define ANUBIS_PA_CTRL1	    (ANUBIS_PA_CPLD)
 
-#define ANUBIS_VA_CTRL2	    ANUBIS_IOADDR(0x00100000)	 /* 0x01400000 */
+#define ANUBIS_VA_CTRL2	    ANUBIS_IOADDR(0x00100000)	 /* 0x01900000 */
 #define ANUBIS_PA_CTRL2	    (ANUBIS_PA_CPLD)
 
-#define ANUBIS_VA_CTRL3	    ANUBIS_IOADDR(0x00200000)	 /* 0x01500000 */
+#define ANUBIS_VA_CTRL3	    ANUBIS_IOADDR(0x00200000)	 /* 0x01A00000 */
 #define ANUBIS_PA_CTRL3	    (ANUBIS_PA_CPLD)
 
-#define ANUBIS_VA_CTRL4	    ANUBIS_IOADDR(0x00300000)	 /* 0x01600000 */
+#define ANUBIS_VA_CTRL4	    ANUBIS_IOADDR(0x00300000)	 /* 0x01B00000 */
 #define ANUBIS_PA_CTRL4	    (ANUBIS_PA_CPLD)
 
 #define ANUBIS_IDEPRI	    ANUBIS_IOADDR(0x01000000)
diff --git a/include/asm-arm/arch-versatile/io.h b/include/asm-arm/arch-versatile/io.h
index 9f895bf6149..47e904cf25c 100644
--- a/include/asm-arm/arch-versatile/io.h
+++ b/include/asm-arm/arch-versatile/io.h
@@ -22,7 +22,11 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)			((void __iomem *)(a))
+static inline void __iomem *__io(unsigned long addr)
+{
+	return (void __iomem *)addr;
+}
+#define __io(a)	__io(a)
 #define __mem_pci(a)		(a)
 #define __mem_isa(a)		(a)
 
diff --git a/include/asm-arm/elf.h b/include/asm-arm/elf.h
index a1696ba238d..7da97a93754 100644
--- a/include/asm-arm/elf.h
+++ b/include/asm-arm/elf.h
@@ -124,6 +124,8 @@ do { \
 	if (((ex).e_flags & EF_ARM_EABI_MASK) || \
 	    ((ex).e_flags & EF_ARM_SOFT_FLOAT)) \
 		set_thread_flag(TIF_USING_IWMMXT); \
+	else \
+		clear_thread_flag(TIF_USING_IWMMXT); \
 } while (0)
 
 #endif
diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index cfa71a0dffb..5c4ae8f5dbb 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -136,9 +136,9 @@ extern void __readwrite_bug(const char *fn);
 /*
  * String version of IO memory access ops:
  */
-extern void _memcpy_fromio(void *, void __iomem *, size_t);
-extern void _memcpy_toio(void __iomem *, const void *, size_t);
-extern void _memset_io(void __iomem *, int, size_t);
+extern void _memcpy_fromio(void *, const volatile void __iomem *, size_t);
+extern void _memcpy_toio(volatile void __iomem *, const void *, size_t);
+extern void _memset_io(volatile void __iomem *, int, size_t);
 
 #define mmiowb()
 
diff --git a/include/asm-arm/signal.h b/include/asm-arm/signal.h
index 760f6e65af0..ced69161917 100644
--- a/include/asm-arm/signal.h
+++ b/include/asm-arm/signal.h
@@ -115,7 +115,6 @@ typedef unsigned long sigset_t;
 
 #ifdef __KERNEL__
 #define SA_TIMER		0x40000000
-#define SA_IRQNOMASK		0x08000000
 #endif
 
 #include <asm-generic/signal.h>
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index f86c1e54946..ff28c8b31f5 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -158,6 +158,19 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres
 #define lazy_mmu_prot_update(pte)	do { } while (0)
 #endif
 
+#ifndef __HAVE_ARCH_MULTIPLE_ZERO_PAGE
+#define move_pte(pte, prot, old_addr, new_addr)	(pte)
+#else
+#define move_pte(pte, prot, old_addr, new_addr)				\
+({									\
+ 	pte_t newpte = (pte);						\
+	if (pte_present(pte) && pfn_valid(pte_pfn(pte)) &&		\
+			pte_page(pte) == ZERO_PAGE(old_addr))		\
+		newpte = mk_pte(ZERO_PAGE(new_addr), (prot));		\
+	newpte;								\
+})
+#endif
+
 /*
  * When walking page tables, get the address of the next boundary,
  * or the end address of the range if that comes earlier.  Although no
diff --git a/include/asm-i386/hw_irq.h b/include/asm-i386/hw_irq.h
index 4ac84cc6f01..622815bf324 100644
--- a/include/asm-i386/hw_irq.h
+++ b/include/asm-i386/hw_irq.h
@@ -18,6 +18,8 @@
 #include <asm/irq.h>
 #include <asm/sections.h>
 
+struct hw_interrupt_type;
+
 /*
  * Various low-level irq details needed by irq.c, process.c,
  * time.c, io_apic.c and smp.c
diff --git a/include/asm-ia64/uaccess.h b/include/asm-ia64/uaccess.h
index 3a7829bb595..9adb51211c2 100644
--- a/include/asm-ia64/uaccess.h
+++ b/include/asm-ia64/uaccess.h
@@ -187,8 +187,8 @@ extern void __get_user_unknown (void);
 ({											\
 	const __typeof__(*(ptr)) __user *__gu_ptr = (ptr);				\
 	__typeof__ (size) __gu_size = (size);						\
-	long __gu_err = -EFAULT, __gu_val = 0;						\
-											\
+	long __gu_err = -EFAULT;							\
+	unsigned long __gu_val = 0;							\
 	if (!check || __access_ok(__gu_ptr, size, segment))				\
 		switch (__gu_size) {							\
 		      case 1: __get_user_size(__gu_val, __gu_ptr, 1, __gu_err); break;	\
@@ -240,13 +240,13 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use
 static inline unsigned long
 __copy_to_user (void __user *to, const void *from, unsigned long count)
 {
-	return __copy_user(to, (void __user *) from, count);
+	return __copy_user(to, (__force void __user *) from, count);
 }
 
 static inline unsigned long
 __copy_from_user (void *to, const void __user *from, unsigned long count)
 {
-	return __copy_user((void __user *) to, from, count);
+	return __copy_user((__force void __user *) to, from, count);
 }
 
 #define __copy_to_user_inatomic		__copy_to_user
@@ -258,7 +258,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
 	long __cu_len = (n);								\
 											\
 	if (__access_ok(__cu_to, __cu_len, get_fs()))					\
-		__cu_len = __copy_user(__cu_to, (void __user *) __cu_from, __cu_len);	\
+		__cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len);	\
 	__cu_len;									\
 })
 
@@ -270,7 +270,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
 											\
 	__chk_user_ptr(__cu_from);							\
 	if (__access_ok(__cu_from, __cu_len, get_fs()))					\
-		__cu_len = __copy_user((void __user *) __cu_to, __cu_from, __cu_len);	\
+		__cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len);	\
 	__cu_len;									\
 })
 
diff --git a/include/asm-m32r/io.h b/include/asm-m32r/io.h
index 8e9e481e699..70ad1c949c2 100644
--- a/include/asm-m32r/io.h
+++ b/include/asm-m32r/io.h
@@ -60,7 +60,7 @@ __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
  *	address.
  */
 
-static inline void * ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 {
 	return __ioremap(offset, size, 0);
 }
diff --git a/include/asm-m32r/uaccess.h b/include/asm-m32r/uaccess.h
index 93d863c455a..0da7c47d2f0 100644
--- a/include/asm-m32r/uaccess.h
+++ b/include/asm-m32r/uaccess.h
@@ -208,7 +208,8 @@ extern void __get_user_4(void);
  * On error, the variable @x is set to zero.
  */
 #define get_user(x,ptr)							\
-({	int __ret_gu,__val_gu;						\
+({	int __ret_gu;							\
+	unsigned long __val_gu;						\
 	__chk_user_ptr(ptr);						\
 	switch(sizeof (*(ptr))) {					\
 	case 1:  __get_user_x(1,__ret_gu,__val_gu,ptr); break;		\
@@ -403,7 +404,8 @@ struct __large_struct { unsigned long buf[100]; };
 
 #define __get_user_nocheck(x,ptr,size)					\
 ({									\
-	long __gu_err, __gu_val;					\
+	long __gu_err;							\
+	unsigned long __gu_val;						\
 	__get_user_size(__gu_val,(ptr),(size),__gu_err);		\
 	(x) = (__typeof__(*(ptr)))__gu_val;				\
 	__gu_err;							\
@@ -594,8 +596,8 @@ static inline unsigned long __generic_copy_to_user_nocheck(void __user *to,
 	return n;
 }
 
-unsigned long __generic_copy_to_user(void *, const void *, unsigned long);
-unsigned long __generic_copy_from_user(void *, const void *, unsigned long);
+unsigned long __generic_copy_to_user(void __user *, const void *, unsigned long);
+unsigned long __generic_copy_from_user(void *, const void __user *, unsigned long);
 
 /**
  * __copy_to_user: - Copy a block of data into user space, with less checking.
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h
index cbd1672c94c..eaf5d9b3a0e 100644
--- a/include/asm-mips/pgtable.h
+++ b/include/asm-mips/pgtable.h
@@ -68,6 +68,8 @@ extern unsigned long zero_page_mask;
 #define ZERO_PAGE(vaddr) \
 	(virt_to_page(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))
 
+#define __HAVE_ARCH_MULTIPLE_ZERO_PAGE
+
 extern void paging_init(void);
 
 /*
diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h
index 7eb7cf6360b..94d83998a75 100644
--- a/include/asm-ppc/io.h
+++ b/include/asm-ppc/io.h
@@ -56,7 +56,7 @@ extern unsigned long pci_dram_offset;
  * is actually performed (i.e. the data has come back) before we start
  * executing any following instructions.
  */
-extern inline int in_8(volatile unsigned char __iomem *addr)
+extern inline int in_8(const volatile unsigned char __iomem *addr)
 {
 	int ret;
 
@@ -72,7 +72,7 @@ extern inline void out_8(volatile unsigned char __iomem *addr, int val)
 	__asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
 }
 
-extern inline int in_le16(volatile unsigned short __iomem *addr)
+extern inline int in_le16(const volatile unsigned short __iomem *addr)
 {
 	int ret;
 
@@ -83,7 +83,7 @@ extern inline int in_le16(volatile unsigned short __iomem *addr)
 	return ret;
 }
 
-extern inline int in_be16(volatile unsigned short __iomem *addr)
+extern inline int in_be16(const volatile unsigned short __iomem *addr)
 {
 	int ret;
 
@@ -104,7 +104,7 @@ extern inline void out_be16(volatile unsigned short __iomem *addr, int val)
 	__asm__ __volatile__("sth%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
 }
 
-extern inline unsigned in_le32(volatile unsigned __iomem *addr)
+extern inline unsigned in_le32(const volatile unsigned __iomem *addr)
 {
 	unsigned ret;
 
@@ -115,7 +115,7 @@ extern inline unsigned in_le32(volatile unsigned __iomem *addr)
 	return ret;
 }
 
-extern inline unsigned in_be32(volatile unsigned __iomem *addr)
+extern inline unsigned in_be32(const volatile unsigned __iomem *addr)
 {
 	unsigned ret;
 
@@ -139,7 +139,7 @@ extern inline void out_be32(volatile unsigned __iomem *addr, int val)
 #define readb(addr) in_8((volatile u8 *)(addr))
 #define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
 #else
-static inline __u8 readb(volatile void __iomem *addr)
+static inline __u8 readb(const volatile void __iomem *addr)
 {
 	return in_8(addr);
 }
@@ -150,11 +150,11 @@ static inline void writeb(__u8 b, volatile void __iomem *addr)
 #endif
 
 #if defined(CONFIG_APUS)
-static inline __u16 readw(volatile void __iomem *addr)
+static inline __u16 readw(const volatile void __iomem *addr)
 {
 	return *(__force volatile __u16 *)(addr);
 }
-static inline __u32 readl(volatile void __iomem *addr)
+static inline __u32 readl(const volatile void __iomem *addr)
 {
 	return *(__force volatile __u32 *)(addr);
 }
@@ -173,11 +173,11 @@ static inline void writel(__u32 b, volatile void __iomem *addr)
 #define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
 #define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
 #else
-static inline __u16 readw(volatile void __iomem *addr)
+static inline __u16 readw(const volatile void __iomem *addr)
 {
 	return in_le16(addr);
 }
-static inline __u32 readl(volatile void __iomem *addr)
+static inline __u32 readl(const volatile void __iomem *addr)
 {
 	return in_le32(addr);
 }
diff --git a/include/asm-ppc/mv64x60.h b/include/asm-ppc/mv64x60.h
index 75c2ffa26b2..ee2f9188cc6 100644
--- a/include/asm-ppc/mv64x60.h
+++ b/include/asm-ppc/mv64x60.h
@@ -233,7 +233,7 @@ struct mv64x60_chip_info {
 struct mv64x60_handle {
 	u32		type;		/* type of bridge */
 	u32		rev;		/* revision of bridge */
-	void		*v_base;	/* virtual base addr of bridge regs */
+	void		__iomem *v_base;/* virtual base addr of bridge regs */
 	phys_addr_t	p_base;		/* physical base addr of bridge regs */
 
 	u32		pci_mode_a;	/* pci 0 mode: conventional pci, pci-x*/
@@ -303,7 +303,7 @@ void mv64x60_alloc_hose(struct mv64x60_handle *bh, u32 cfg_addr,
 	u32 cfg_data, struct pci_controller **hose);
 int mv64x60_get_type(struct mv64x60_handle *bh);
 int mv64x60_setup_for_chip(struct mv64x60_handle *bh);
-void *mv64x60_get_bridge_vbase(void);
+void __iomem *mv64x60_get_bridge_vbase(void);
 u32 mv64x60_get_bridge_type(void);
 u32 mv64x60_get_bridge_rev(void);
 void mv64x60_get_mem_windows(struct mv64x60_handle *bh,
diff --git a/include/asm-ppc64/tlbflush.h b/include/asm-ppc64/tlbflush.h
index 45411a67e08..74271d7c1d1 100644
--- a/include/asm-ppc64/tlbflush.h
+++ b/include/asm-ppc64/tlbflush.h
@@ -25,6 +25,7 @@ struct ppc64_tlb_batch {
 	pte_t pte[PPC64_TLB_BATCH_NR];
 	unsigned long addr[PPC64_TLB_BATCH_NR];
 	unsigned long vaddr[PPC64_TLB_BATCH_NR];
+	unsigned int large;
 };
 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
 
diff --git a/include/asm-ppc64/uaccess.h b/include/asm-ppc64/uaccess.h
index c181a60d868..132c1276547 100644
--- a/include/asm-ppc64/uaccess.h
+++ b/include/asm-ppc64/uaccess.h
@@ -164,7 +164,8 @@ do {									\
 
 #define __get_user_nocheck(x,ptr,size)				\
 ({								\
-	long __gu_err, __gu_val;				\
+	long __gu_err;						\
+	unsigned long __gu_val;					\
 	might_sleep();						\
 	__get_user_size(__gu_val,(ptr),(size),__gu_err,-EFAULT);\
 	(x) = (__typeof__(*(ptr)))__gu_val;			\
@@ -173,7 +174,8 @@ do {									\
 
 #define __get_user_check(x,ptr,size)					\
 ({									\
-	long __gu_err = -EFAULT, __gu_val = 0;				\
+	long __gu_err = -EFAULT;					\
+	unsigned long __gu_val = 0;					\
 	const __typeof__(*(ptr)) __user *__gu_addr = (ptr);		\
 	might_sleep();							\
 	if (access_ok(VERIFY_READ,__gu_addr,size))			\
diff --git a/include/asm-s390/sigcontext.h b/include/asm-s390/sigcontext.h
index d57bc0cebdc..803545351dd 100644
--- a/include/asm-s390/sigcontext.h
+++ b/include/asm-s390/sigcontext.h
@@ -61,7 +61,7 @@ typedef struct
 struct sigcontext
 {
 	unsigned long	oldmask[_SIGCONTEXT_NSIG_WORDS];
-	_sigregs        *sregs;
+	_sigregs        __user *sregs;
 };
 
 
diff --git a/include/asm-s390/signal.h b/include/asm-s390/signal.h
index 3d6e11c6c1f..7084626de21 100644
--- a/include/asm-s390/signal.h
+++ b/include/asm-s390/signal.h
@@ -165,7 +165,7 @@ struct sigaction {
 #endif /* __KERNEL__ */
 
 typedef struct sigaltstack {
-        void *ss_sp;
+        void __user *ss_sp;
         int ss_flags;
         size_t ss_size;
 } stack_t;
diff --git a/include/asm-sparc/pgtable.h b/include/asm-sparc/pgtable.h
index 8f4f6a95965..8395ad2f1c0 100644
--- a/include/asm-sparc/pgtable.h
+++ b/include/asm-sparc/pgtable.h
@@ -82,6 +82,8 @@ extern unsigned long page_kernel;
 /* Top-level page directory */
 extern pgd_t swapper_pg_dir[1024];
 
+extern void paging_init(void);
+
 /* Page table for 0-4MB for everybody, on the Sparc this
  * holds the same as on the i386.
  */
diff --git a/include/asm-sparc64/cacheflush.h b/include/asm-sparc64/cacheflush.h
index ededd2659ea..b3f61659ba8 100644
--- a/include/asm-sparc64/cacheflush.h
+++ b/include/asm-sparc64/cacheflush.h
@@ -66,6 +66,11 @@ extern void flush_ptrace_access(struct vm_area_struct *, struct page *,
 #define flush_cache_vmap(start, end)		do { } while (0)
 #define flush_cache_vunmap(start, end)		do { } while (0)
 
+#ifdef CONFIG_DEBUG_PAGEALLOC
+/* internal debugging function */
+void kernel_map_pages(struct page *page, int numpages, int enable);
+#endif
+
 #endif /* !__ASSEMBLY__ */
 
 #endif /* _SPARC64_CACHEFLUSH_H */
diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h
index 9a3a81f1cc5..74de79dca91 100644
--- a/include/asm-sparc64/cpudata.h
+++ b/include/asm-sparc64/cpudata.h
@@ -22,6 +22,16 @@ typedef struct {
 	unsigned int	__pad1;
 	unsigned long	*pte_cache[2];
 	unsigned long	*pgd_cache;
+
+	/* Dcache line 3, rarely used */
+	unsigned int	dcache_size;
+	unsigned int	dcache_line_size;
+	unsigned int	icache_size;
+	unsigned int	icache_line_size;
+	unsigned int	ecache_size;
+	unsigned int	ecache_line_size;
+	unsigned int	__pad2;
+	unsigned int	__pad3;
 } cpuinfo_sparc;
 
 DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data);
diff --git a/include/asm-sparc64/head.h b/include/asm-sparc64/head.h
index b63a33cf497..0abd3a674e8 100644
--- a/include/asm-sparc64/head.h
+++ b/include/asm-sparc64/head.h
@@ -12,9 +12,12 @@
 #define __JALAPENO_ID	0x003e0016
 
 #define CHEETAH_MANUF		0x003e
-#define CHEETAH_IMPL		0x0014
-#define CHEETAH_PLUS_IMPL	0x0015
-#define JALAPENO_IMPL		0x0016
+#define CHEETAH_IMPL		0x0014 /* Ultra-III   */
+#define CHEETAH_PLUS_IMPL	0x0015 /* Ultra-III+  */
+#define JALAPENO_IMPL		0x0016 /* Ultra-IIIi  */
+#define JAGUAR_IMPL		0x0018 /* Ultra-IV    */
+#define PANTHER_IMPL		0x0019 /* Ultra-IV+   */
+#define SERRANO_IMPL		0x0022 /* Ultra-IIIi+ */
 
 #define BRANCH_IF_CHEETAH_BASE(tmp1,tmp2,label)	\
 	rdpr	%ver, %tmp1;			\
diff --git a/include/asm-sparc64/openprom.h b/include/asm-sparc64/openprom.h
index 0a336901d58..b4959d2b0d9 100644
--- a/include/asm-sparc64/openprom.h
+++ b/include/asm-sparc64/openprom.h
@@ -186,8 +186,8 @@ struct linux_prom_registers {
 };
 
 struct linux_prom64_registers {
-	long phys_addr;
-	long reg_size;
+	unsigned long phys_addr;
+	unsigned long reg_size;
 };
 
 struct linux_prom_irqs {
diff --git a/include/asm-sparc64/oplib.h b/include/asm-sparc64/oplib.h
index a432d9e7daa..d02f1e8ae1a 100644
--- a/include/asm-sparc64/oplib.h
+++ b/include/asm-sparc64/oplib.h
@@ -38,6 +38,20 @@ extern int prom_stdin, prom_stdout;
  */
 extern int prom_chosen_node;
 
+/* Helper values and strings in arch/sparc64/kernel/head.S */
+extern const char prom_finddev_name[];
+extern const char prom_chosen_path[];
+extern const char prom_getprop_name[];
+extern const char prom_mmu_name[];
+extern const char prom_callmethod_name[];
+extern const char prom_translate_name[];
+extern const char prom_map_name[];
+extern const char prom_unmap_name[];
+extern int prom_mmu_ihandle_cache;
+extern unsigned int prom_boot_mapped_pc;
+extern unsigned int prom_boot_mapping_mode;
+extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low;
+
 struct linux_mlist_p1275 {
 	struct linux_mlist_p1275 *theres_more;
 	unsigned long start_adr;
@@ -68,7 +82,7 @@ extern char *prom_getbootargs(void);
  * of the string is different on V0 vs. V2->higher proms.  The caller must
  * know what he/she is doing!  Returns the device descriptor, an int.
  */
-extern int prom_devopen(char *device_string);
+extern int prom_devopen(const char *device_string);
 
 /* Close a previously opened device described by the passed integer
  * descriptor.
@@ -81,27 +95,13 @@ extern int prom_d