m68k,m68knommu: merge header files

Merge header files for m68k and m68knommu to the single location:

    arch/m68k/include/asm

The majority of this patch was the result of the
script that is included in the changelog below.

The script was originally written by Arnd Bergman and
exten by me to cover a few more files.

When the header files differed the script uses the following:

The original m68k file is named <file>_mm.h  [mm for memory manager]
The m68knommu file is named <file>_no.h [no for no memory manager]

The files uses the following include guard:

This include gaurd works as the m68knommu toolchain set
the __uClinux__ symbol - so this should work in userspace too.

Merging the header files for m68k and m68knommu exposes the
(unexpected?) ABI differences thus it is easier to actually
identify these and thus to fix them.

The commit has been build tested with both a m68k and
a m68knommu toolchain - with success.

The commit has also been tested with "make headers_check"
and this patch fixes make headers_check for m68knommu.

The script used:
TARGET=arch/m68k/include/asm
SOURCE=arch/m68knommu/include/asm

INCLUDE="cachectl.h errno.h fcntl.h hwtest.h ioctls.h ipcbuf.h \
linkage.h math-emu.h md.h mman.h movs.h msgbuf.h openprom.h \
oplib.h poll.h posix_types.h resource.h rtc.h sembuf.h shmbuf.h \
shm.h shmparam.h socket.h sockios.h spinlock.h statfs.h stat.h \
termbits.h termios.h tlb.h types.h user.h"

EQUAL="auxvec.h cputime.h device.h emergency-restart.h futex.h \
ioctl.h irq_regs.h kdebug.h local.h mutex.h percpu.h \
sections.h topology.h"

NOMUUFILES="anchor.h bootstd.h coldfire.h commproc.h dbg.h \
elia.h flat.h m5206sim.h m520xsim.h m523xsim.h m5249sim.h \
m5272sim.h m527xsim.h m528xsim.h m5307sim.h m532xsim.h \
m5407sim.h m68360_enet.h m68360.h m68360_pram.h m68360_quicc.h \
m68360_regs.h MC68328.h MC68332.h MC68EZ328.h MC68VZ328.h \
mcfcache.h mcfdma.h mcfmbus.h mcfne.h mcfpci.h mcfpit.h \
mcfsim.h mcfsmc.h mcftimer.h mcfuart.h mcfwdebug.h \
nettel.h quicc_simple.h smp.h"

FILES="atomic.h bitops.h bootinfo.h bug.h bugs.h byteorder.h cache.h \
cacheflush.h checksum.h current.h delay.h div64.h \
dma-mapping.h dma.h elf.h entry.h fb.h fpu.h hardirq.h hw_irq.h io.h \
irq.h kmap_types.h machdep.h mc146818rtc.h mmu.h mmu_context.h \
module.h page.h page_offset.h param.h pci.h pgalloc.h \
pgtable.h processor.h ptrace.h scatterlist.h segment.h \
setup.h sigcontext.h siginfo.h signal.h string.h system.h swab.h \
thread_info.h timex.h tlbflush.h traps.h uaccess.h ucontext.h \
unaligned.h unistd.h"

mergefile() {
	BASE=${1%.h}
	git mv ${SOURCE}/$1 ${TARGET}/${BASE}_no.h
	git mv ${TARGET}/$1 ${TARGET}/${BASE}_mm.h

cat << EOF > ${TARGET}/$1
EOF

	git add ${TARGET}/$1
}

set -e

mkdir -p ${TARGET}

git mv include/asm-m68k/* ${TARGET}
rmdir include/asm-m68k

git rm ${SOURCE}/Kbuild
for F in $INCLUDE $EQUAL; do
	git rm ${SOURCE}/$F
done

for F in $NOMUUFILES; do
	git mv ${SOURCE}/$F ${TARGET}/$F
done

for F in $FILES ; do
	mergefile $F
done

rmdir arch/m68knommu/include/asm
rmdir arch/m68knommu/include

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 324 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/system_no.h b/arch/m68k/include/asm/system_no.h
new file mode 100644
index 0000000..40f49de
--- /dev/null
+++ b/arch/m68k/include/asm/system_no.h
@@ -0,0 +1,324 @@
+#ifndef _M68KNOMMU_SYSTEM_H
+#define _M68KNOMMU_SYSTEM_H
+
+#include <linux/linkage.h>
+#include <asm/segment.h>
+#include <asm/entry.h>
+
+/*
+ * switch_to(n) should switch tasks to task ptr, first checking that
+ * ptr isn't the current task, in which case it does nothing.  This
+ * also clears the TS-flag if the task we switched to has used the
+ * math co-processor latest.
+ */
+/*
+ * switch_to() saves the extra registers, that are not saved
+ * automatically by SAVE_SWITCH_STACK in resume(), ie. d0-d5 and
+ * a0-a1. Some of these are used by schedule() and its predecessors
+ * and so we might get see unexpected behaviors when a task returns
+ * with unexpected register values.
+ *
+ * syscall stores these registers itself and none of them are used
+ * by syscall after the function in the syscall has been called.
+ *
+ * Beware that resume now expects *next to be in d1 and the offset of
+ * tss to be in a1. This saves a few instructions as we no longer have
+ * to push them onto the stack and read them back right after.
+ *
+ * 02/17/96 - Jes Sorensen (jds@kom.auc.dk)
+ *
+ * Changed 96/09/19 by Andreas Schwab
+ * pass prev in a0, next in a1, offset of tss in d1, and whether
+ * the mm structures are shared in d2 (to avoid atc flushing).
+ */
+asmlinkage void resume(void);
+#define switch_to(prev,next,last)				\
+{								\
+  void *_last;							\
+  __asm__ __volatile__(						\
+  	"movel	%1, %%a0\n\t"					\
+	"movel	%2, %%a1\n\t"					\
+	"jbsr resume\n\t"					\
+	"movel	%%d1, %0\n\t"					\
+       : "=d" (_last)						\
+       : "d" (prev), "d" (next)					\
+       : "cc", "d0", "d1", "d2", "d3", "d4", "d5", "a0", "a1");	\
+  (last) = _last;						\
+}
+
+#ifdef CONFIG_COLDFIRE
+#define local_irq_enable() __asm__ __volatile__ (		\
+	"move %/sr,%%d0\n\t"					\
+	"andi.l #0xf8ff,%%d0\n\t"				\
+	"move %%d0,%/sr\n"					\
+	: /* no outputs */					\
+	:							\
+        : "cc", "%d0", "memory")
+#define local_irq_disable() __asm__ __volatile__ (		\
+	"move %/sr,%%d0\n\t"					\
+	"ori.l #0x0700,%%d0\n\t"				\
+	"move %%d0,%/sr\n"					\
+	: /* no outputs */					\
+	:							\
+	: "cc", "%d0", "memory")
+/* For spinlocks etc */
+#define local_irq_save(x) __asm__ __volatile__ (		\
+	"movew %%sr,%0\n\t"					\
+	"movew #0x0700,%%d0\n\t"				\
+	"or.l  %0,%%d0\n\t"					\
+	"movew %%d0,%/sr"					\
+	: "=d" (x)						\
+	:							\
+	: "cc", "%d0", "memory")
+#else
+
+/* portable version */ /* FIXME - see entry.h*/
+#define ALLOWINT 0xf8ff
+
+#define local_irq_enable() asm volatile ("andiw %0,%%sr": : "i" (ALLOWINT) : "memory")
+#define local_irq_disable() asm volatile ("oriw  #0x0700,%%sr": : : "memory")
+#endif
+
+#define local_save_flags(x) asm volatile ("movew %%sr,%0":"=d" (x) : : "memory")
+#define local_irq_restore(x) asm volatile ("movew %0,%%sr": :"d" (x) : "memory")
+
+/* For spinlocks etc */
+#ifndef local_irq_save
+#define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } while (0)
+#endif
+
+#define	irqs_disabled()			\
+({					\
+	unsigned long flags;		\
+	local_save_flags(flags);	\
+	((flags & 0x0700) == 0x0700);	\
+})
+
+#define iret() __asm__ __volatile__ ("rte": : :"memory", "sp", "cc")
+
+/*
+ * Force strict CPU ordering.
+ * Not really required on m68k...
+ */
+#define nop()  asm volatile ("nop"::)
+#define mb()   asm volatile (""   : : :"memory")
+#define rmb()  asm volatile (""   : : :"memory")
+#define wmb()  asm volatile (""   : : :"memory")
+#define set_mb(var, value)	({ (var) = (value); wmb(); })
+
+#ifdef CONFIG_SMP
+#define smp_mb()	mb()
+#define smp_rmb()	rmb()
+#define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
+#else
+#define smp_mb()	barrier()
+#define smp_rmb()	barrier()
+#define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	do { } while(0)
+#endif
+
+#define read_barrier_depends()  ((void)0)
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+
+struct __xchg_dummy { unsigned long a[100]; };
+#define __xg(x) ((volatile struct __xchg_dummy *)(x))
+
+#ifndef CONFIG_RMW_INSNS
+static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+{
+  unsigned long tmp, flags;
+
+  local_irq_save(flags);
+
+  switch (size) {
+  case 1:
+    __asm__ __volatile__
+    ("moveb %2,%0\n\t"
+     "moveb %1,%2"
+    : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
+    break;
+  case 2:
+    __asm__ __volatile__
+    ("movew %2,%0\n\t"
+     "movew %1,%2"
+    : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
+    break;
+  case 4:
+    __asm__ __volatile__
+    ("movel %2,%0\n\t"
+     "movel %1,%2"
+    : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
+    break;
+  }
+  local_irq_restore(flags);
+  return tmp;
+}
+#else
+static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+{
+	switch (size) {
+	    case 1:
+		__asm__ __volatile__
+			("moveb %2,%0\n\t"
+			 "1:\n\t"
+			 "casb %0,%1,%2\n\t"
+			 "jne 1b"
+			 : "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
+		break;
+	    case 2:
+		__asm__ __volatile__
+			("movew %2,%0\n\t"
+			 "1:\n\t"
+			 "casw %0,%1,%2\n\t"
+			 "jne 1b"
+			 : "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
+		break;
+	    case 4:
+		__asm__ __volatile__
+			("movel %2,%0\n\t"
+			 "1:\n\t"
+			 "casl %0,%1,%2\n\t"
+			 "jne 1b"
+			 : "=&d" (x) : "d" (x), "m" (*__xg(ptr)) : "memory");
+		break;
+	}
+	return x;
+}
+#endif
+
+#include <asm-generic/cmpxchg-local.h>
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr, o, n)				  	       \
+	((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
+			(unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+#ifndef CONFIG_SMP
+#include <asm-generic/cmpxchg.h>
+#endif
+
+#if defined( CONFIG_M68328 ) || defined( CONFIG_M68EZ328 ) || \
+	defined (CONFIG_M68360) || defined( CONFIG_M68VZ328 )
+#define HARD_RESET_NOW() ({		\
+        local_irq_disable();		\
+        asm("				\
+        moveal #0x10c00000, %a0;	\
+        moveb #0, 0xFFFFF300;		\
+        moveal 0(%a0), %sp;		\
+        moveal 4(%a0), %a0;		\
+        jmp (%a0);			\
+        ");				\
+})
+#endif
+
+#ifdef CONFIG_COLDFIRE
+#if defined(CONFIG_M5272) && defined(CONFIG_NETtel)
+/*
+ * Need to account for broken early mask of 5272 silicon. So don't
+ * jump through the original start address. Jump strait into the
+ * known start of the FLASH code.
+ */
+#define HARD_RESET_NOW() ({		\
+        asm("				\
+	movew #0x2700, %sr;		\
+        jmp 0xf0000400;			\
+        ");				\
+})
+#elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
+      defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
+#define HARD_RESET_NOW() ({		\
+        asm("				\
+	movew #0x2700, %sr;		\
+	moveal #0x10000044, %a0;	\
+	movel #0xffffffff, (%a0);	\
+	moveal #0x10000001, %a0;	\
+	moveb #0x00, (%a0);		\
+        moveal #0xf0000004, %a0;	\
+        moveal (%a0), %a0;		\
+        jmp (%a0);			\
+        ");				\
+})
+#elif defined(CONFIG_M5272)
+/*
+ * Retrieve the boot address in flash using CSBR0 and CSOR0
+ * find the reset vector at flash_address + 4 (e.g. 0x400)
+ * remap it in the flash's current location (e.g. 0xf0000400)
+ * and jump there.
+ */ 
+#define HARD_RESET_NOW() ({		\
+	asm("				\
+	movew #0x2700, %%sr;		\
+	move.l	%0+0x40,%%d0;		\
+	and.l	%0+0x44,%%d0;		\
+	andi.l	#0xfffff000,%%d0;	\
+	mov.l	%%d0,%%a0;		\
+	or.l	4(%%a0),%%d0;		\
+	mov.l	%%d0,%%a0;		\
+	jmp (%%a0);"			\
+	: /* No output */		\
+	: "o" (*(char *)MCF_MBAR) );	\
+})
+#elif defined(CONFIG_M528x)
+/*
+ * The MCF528x has a bit (SOFTRST) in memory (Reset Control Register RCR),
+ * that when set, resets the MCF528x.
+ */
+#define HARD_RESET_NOW() \
+({						\
+	unsigned char volatile *reset;		\
+	asm("move.w	#0x2700, %sr");		\
+	reset = ((volatile unsigned char *)(MCF_IPSBAR + 0x110000));	\
+	while(1)				\
+	*reset |= (0x01 << 7);\
+})
+#elif defined(CONFIG_M523x)
+#define HARD_RESET_NOW() ({		\
+	asm("				\
+	movew #0x2700, %sr;		\
+	movel #0x01000000, %sp;		\
+	moveal #0x40110000, %a0;	\
+	moveb #0x80, (%a0);		\
+	");				\
+})
+#elif defined(CONFIG_M520x)
+	/*
+	 * The MCF5208 has a bit (SOFTRST) in memory (Reset Control Register 
+	 * RCR), that when set, resets the MCF5208.
+	 */
+#define HARD_RESET_NOW() 		\
+({					\
+	unsigned char volatile *reset;	\
+	asm("move.w     #0x2700, %sr");	\
+	reset = ((volatile unsigned char *)(MCF_IPSBAR + 0xA0000));	\
+	while(1)			\
+		*reset |= 0x80;		\
+})
+#else
+#define HARD_RESET_NOW() ({		\
+        asm("				\
+	movew #0x2700, %sr;		\
+        moveal #0x4, %a0;		\
+        moveal (%a0), %a0;		\
+        jmp (%a0);			\
+        ");				\
+})
+#endif
+#endif
+#define arch_align_stack(x) (x)
+
+
+static inline int irqs_disabled_flags(unsigned long flags)
+{
+	if (flags & 0x0700)
+		return 0;
+	else
+		return 1;
+}
+
+#endif /* _M68KNOMMU_SYSTEM_H */