[PATCH] misc PA updates

 - Remove obsolete documentation
 - Update arch/parisc/lib
 - Remove arch/parisc/tools, we use asm-offsets.c these days
 - Update arch/parisc/Makefile, defconfig & vmlinux.lds.S

Documentation/parisc/IODC.txt

-Some notes on IODC, its general brokenness, and how to work around it.
-
-Short Version
-
-IODC is HP's pre-PCI standard for device identification (a la PCI vendor,
-device IDs), detection, configuration, initialization and so on.
-
-It also can provide firmware function to do the actual IO, which are slow,
-not really defined for runtime usage and generally not desirable.  (There
-are other firmware standards, such as STI, to do real IO).
-
-Usually, there are two parts to IODC.  The actual ROMs, which are laid out,
-detected aso in a bus-specific manner (IO_DC_ADDRESS / IO_DC_DATA on
-GSC/Runway, PCI spec - compliant ROMs for PCI, God-only-knows how on EISA),
-and the slightly cooked data read by PDC_IODC.
-
-The ROM layout is generally icky (only one byte out of every 4-byte-word
-might be valid, and many devices don't implement required options), so
-using PDC_IODC is highly recommended.  (In fact, you should use the device
-lists set up by the kernel proper instead of calling PDC_IODC yourself).
-
-Now, let's have a look at what the cooked ROM looks like (see iodc.pdf for
-the details, this is the simplified version).
-
-Basically, the first 8 bytes of IODC contain two 32-bit ids called HVERSION
-and SVERSION.  Those are further split up into bit fields, and
-unfortunately just ignoring this split up isn't an option.
-
-SVERSION consists of a 4-bit revision field, a 20-bit model field and a
-8-bit opt field.  Now, forget the revision and opt fields exist.  Basically,
-the model field is equivalent to a PCI device id (there is no vendor id.
-this is proprietary hardware we're talking about).  That is, all your
-driver cares for, in 90 % of the cases, is to find all devices that match
-the model field.
-
-The rev field is - you guessed it - roughly equivalent to the revision
-byte for PCI, with the exception that higher revisions should be strict
-supersets of lower revisions.
-
-The last byte of HVERSION, "type", and the last byte of SVERSION, "opt",
-belong together;  type gives a very rough indication of what the device
-is supposed to do, and opt contains some type-specific information. (For
-example, the "bus converter" (ie bus bridge) type encodes the kind of
-bus behind the bridge in the opt field.
-
-The rest of HVERSION contains, in most cases, a number identifying the
-machine the chip was used in, or a revision indicator that just fixed
-bugs and didn't add any features (or was done in a shrinked process or
-whatever).
-
-So, here's the interface you actually should use to find your devices:
-
-
-/* Find a device, matching the model field of sversion only (from=NULL
- * for the first call */
-struct iodc_dev *iodc_find_device(u32 sversion, struct iodc_dev *from);
-
-
-Here's a function you should use if you have special requirements, such
-as finding devices by type rather than by model.  Generally, if you're
-using this, you should be me).
-
-/* Find a device, masking out bits as specified */
-struct iodc_dev *iodc_find_device_mask(u32 hversion, u32 sversion,
-	u32 hversion_mask, u32 sversion_mask, struct iodc_dev *from);
-
-
-	Philipp Rumpf <prumpf@tux.org>

arch/parisc/Makefile

@@ -17,6 +17,19 @@
 # Mike Shaver, Helge Deller and Martin K. Petersen
 #
 
+ifdef CONFIG_PARISC64
+CROSS_COMPILE := hppa64-linux-
+UTS_MACHINE := parisc64
+#CFLAGS += -b hppa64-linux
+
+else
+MACHINE	:= $(subst 64,,$(shell uname -m))
+ifneq (${MACHINE},parisc)
+# cross compilation
+CROSS_COMPILE := hppa-linux-
+endif
+endif
+
 FINAL_LD=$(CROSS_COMPILE)ld --warn-common --warn-section-align 
 
 OBJCOPY_FLAGS =-O binary -R .note -R .comment -S
@@ -29,29 +42,63 @@ CFLAGS := $(CFLAGS) -D__linux__ $(CFLAGS_PIPE) $(CFLAGS_NSR)
 # enable them by default.
 CFLAGS += -mno-space-regs -mfast-indirect-calls
 
-# If we become able to compile for specific platforms, this should be
-# conditional on that.
-CFLAGS += -mschedule=7200
-
 # No fixed-point multiply
 CFLAGS += -mdisable-fpregs
 
-HEAD = arch/parisc/kernel/head.o 
+# Without this, "ld -r" results in .text sections that are too big
+# (> 0x40000) for branches to reach stubs.
+CFLAGS += -ffunction-sections
+
+# select which processor to optimise for
+ifdef CONFIG_PA7100
+CFLAGS += -march=1.1 -mschedule=7100
+endif
+
+ifdef CONFIG_PA7200
+CFLAGS += -march=1.1 -mschedule=7200
+endif
+
+ifdef CONFIG_PA7100LC
+CFLAGS += -march=1.1 -mschedule=7100LC
+endif
+
+ifdef CONFIG_PA8X00
+CFLAGS += -march=2.0 -mschedule=8000
+endif
+
+HEAD := arch/parisc/kernel/head.o 
+ifdef CONFIG_PARISC64
+HEAD := arch/parisc/kernel/head64.o
+endif
 
-SUBDIRS += arch/parisc/tools
 core-y					+= arch/parisc/kernel/pdc_cons.o  \
 					   arch/parisc/kernel/process.o   \
 	   				   arch/parisc/mm/	          \
 					   arch/parisc/kernel/            \
 					   arch/parisc/hpux/		  \
+					   arch/parisc/math-emu/	  \
 					   arch/parisc/kernel/init_task.o
-libs-y					+= arch/parisc/lib/lib.a          \
+libs-y					+= arch/parisc/lib/ \
 					   `$(CC) -print-libgcc-file-name`
 drivers-$(CONFIG_MATH_EMULATION)	+= arch/parisc/math-emu/
-drivers-$(CONFIG_KWDB)			+= arch/parisc/kdb/
 
 palo: vmlinux
-	export TOPDIR=`pwd`; export CONFIG_STI_CONSOLE=$(CONFIG_STI_CONSOLE); \
+	@if [ $$(palo -f /dev/null >/dev/null 2>&1 ; echo $$?) != 2 ]; then \
+		echo 'ERROR: Please install palo first (apt-get install palo)';\
+		echo 'or build it from source and install it somewhere in your $$PATH';\
+		false; \
+	fi
+	@if [ ! -f ./palo.conf ]; then \
+		cp arch/parisc/defpalo.conf palo.conf; \
+		echo 'A generic palo config file (./palo.conf) has been created for you.'; \
+		echo 'You should check it and re-run "make palo".'; \
+		echo 'WARNING: the "lifimage" file is now placed in this directory by default!'; \
+		false; \
+	fi
+	palo -f ./palo.conf
+
+oldpalo: vmlinux
+	export TOPDIR=`pwd`; \
 	unset STRIP LDFLAGS CPP CPPFLAGS AFLAGS CFLAGS CC LD; cd ../palo && make lifimage
 
 Image: palo
@@ -68,6 +115,19 @@ compressed: zImage
 
 install: 
 
+archmrproper:
+
 archclean:
 
-archmrproper:
+prepare: include/asm-$(ARCH)/offsets.h
+
+arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
+				   include/config/MARKER
+
+include/asm-$(ARCH)/offsets.h.tmp: arch/$(ARCH)/kernel/asm-offsets.s
+	@$(generate-asm-offsets.h) < $< > $@
+
+include/asm-$(ARCH)/offsets.h: include/asm-$(ARCH)/offsets.h.tmp
+	@echo -n '  Generating $@'
+	@$(update-if-changed)
+

arch/parisc/defpalo.conf

+# This a generic Palo configuration file.  For more information about how
+# it works try 'palo -?'.
+#
+# Most people using 'make palo' want a bootable file, usable for
+# network or tape booting for example.
+--init-tape=lifimage
+--recoverykernel=vmlinux
+
+########## Pick your ROOT here! ##########
+# You need at least one 'root='!
+#
+# If you want a root ramdisk, use the next 2 lines
+#   (Edit the ramdisk image name!!!!)
+--ramdisk=ram-disk-image-file
+--commandline=0/vmlinux HOME=/ root=/dev/ram initrd=0/ramdisk
+
+# If you want NFS root, use the following command line (Edit the HOSTNAME!!!)
+#--commandline=0/vmlinux HOME=/ root=/dev/nfs nfsroot=HOSTNAME ip=bootp
+
+# If you have root on a disk partition, use this (Edit the partition name!!!)
+#--commandline=0/vmlinux HOME=/ root=/dev/sda1

arch/parisc/lib/Makefile

@@ -2,10 +2,8 @@
 # Makefile for parisc-specific library files..
 #
 
-L_TARGET = lib.a
-
-obj-y := lusercopy.o bitops.o checksum.o
 
-EXTRA_AFLAGS := -traditional
+L_TARGET = lib.a
+obj-y	:= lusercopy.o bitops.o checksum.o io.o memset.o
 
 include $(TOPDIR)/Rules.make

arch/parisc/lib/bitops.c

-/* atomic.c: atomic operations which got too long to be inlined all over
+/*
+ * bitops.c: atomic operations which got too long to be inlined all over
  *      the place.
  * 
- * Copyright 1999 Philipp Rumpf (prumpf@tux.org */
+ * Copyright 1999 Philipp Rumpf (prumpf@tux.org)
+ * Copyright 2000 Grant Grundler (grundler@cup.hp.com)
+ */
 
 #include <linux/config.h>
 #include <linux/kernel.h>
@@ -17,44 +20,67 @@ spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
 
 spinlock_t __atomic_lock = SPIN_LOCK_UNLOCKED;
 
-#ifndef __LP64__
-unsigned long __xchg(unsigned long x, unsigned long *ptr, int size)
+#ifdef __LP64__
+unsigned long __xchg64(unsigned long x, unsigned long *ptr)
 {
 	unsigned long temp, flags;
 
-	if (size != sizeof x) {
-		printk("__xchg called with bad pointer\n");
-	}
-	spin_lock_irqsave(&__atomic_lock, flags);
+	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
 	temp = *ptr;
 	*ptr = x;
-	spin_unlock_irqrestore(&__atomic_lock, flags);
+	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
 	return temp;
 }
-#else
-unsigned long __xchg(unsigned long x, unsigned long *ptr, int size)
+#endif
+
+unsigned long __xchg32(int x, int *ptr)
 {
-	unsigned long temp, flags;
-	unsigned int *ptr32;
+	unsigned long flags;
+	unsigned long temp;
 
-	if (size == 8) {
-try_long:
-		spin_lock_irqsave(&__atomic_lock, flags);
-		temp = *ptr;
+	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	(long) temp = (long) *ptr;	/* XXX - sign extension wanted? */
 	*ptr = x;
-		spin_unlock_irqrestore(&__atomic_lock, flags);
+	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
 	return temp;
-	}
-	if (size == 4) {
-		ptr32 = (unsigned int *)ptr;
-		spin_lock_irqsave(&__atomic_lock, flags);
-		temp = (unsigned long)*ptr32;
-		*ptr32 = (unsigned int)x;
-		spin_unlock_irqrestore(&__atomic_lock, flags);
+}
+
+
+unsigned long __xchg8(char x, char *ptr)
+{
+	unsigned long flags;
+	unsigned long temp;
+
+	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	(long) temp = (long) *ptr;	/* XXX - sign extension wanted? */
+	*ptr = x;
+	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
 	return temp;
-	}
+}
+
+
+#ifdef __LP64__
+unsigned long __cmpxchg_u64(volatile unsigned long *ptr, unsigned long old, unsigned long new)
+{
+	unsigned long flags;
+	unsigned long prev;
 
-	printk("__xchg called with bad pointer\n");
-	goto try_long;
+	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	if ((prev = *ptr) == old)
+		*ptr = new;
+	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	return prev;
 }
 #endif
+
+unsigned long __cmpxchg_u32(volatile unsigned int *ptr, unsigned int old, unsigned int new)
+{
+	unsigned long flags;
+	unsigned int prev;
+
+	SPIN_LOCK_IRQSAVE(ATOMIC_HASH(ptr), flags);
+	if ((prev = *ptr) == old)
+		*ptr = new;
+	SPIN_UNLOCK_IRQRESTORE(ATOMIC_HASH(ptr), flags);
+	return (unsigned long)prev;
+}

arch/parisc/lib/lusercopy.S

-/*------------------------------------------------------------------------------
- * Native PARISC/Linux Project (http://www.puffingroup.com/parisc)
+/*
+ * Linux/PA-RISC Project (http://www.parisc-linux.org/)
  *
  * Assembly Language User Access Routines
  *  Copyright (C) 2000 Hewlett-Packard (John Marvin)
@@ -30,7 +30,6 @@
  */
 
 
-	.level		1.1
 	.text
 	
 #include <asm/assembly.h>
@@ -42,12 +41,9 @@
 	 * on the flag stored in the task structure.
 	 */
 
-	/* FIXME! depi below has hardcoded idea of kernel stack size */
-
 	.macro  get_sr
-	copy        %r30,%r1        ;! Get task structure
-	depi        0,31,14,%r1     ;! into r1
-	ldw         TASK_SEGMENT(%r1),%r22
+	mfctl       %cr30,%r1
+	ldw         TI_SEGMENT(%r1),%r22
 	mfsp        %sr3,%r1
 	or,<>       %r22,%r0,%r0
 	copy        %r0,%r1
@@ -82,7 +78,11 @@ $lctu_done:
 	ldo         1(%r24),%r24
 
 	.section __ex_table,"a"
+#ifdef __LP64__
+	.dword      1b,(2b-1b)
+#else
 	.word       1b,(2b-1b)
+#endif
 	.previous
 
 	.procend
@@ -123,7 +123,11 @@ $lcfu_zero_loop:
 	nop
 
 	.section __ex_table,"a"
+#ifdef __LP64__
+	.dword      1b,(2b-1b)
+#else
 	.word       1b,(2b-1b)
+#endif
 	.previous
 
 	.procend
@@ -133,7 +137,7 @@ $lcfu_zero_loop:
 	 *
 	 * Returns -EFAULT if exception before terminator,
 	 *         N if the entire buffer filled,
-	 *         otherwise strlen + 1 (i.e. includes zero byte)
+	 *         otherwise strlen (i.e. excludes zero byte)
 	 */
 
 	.export lstrncpy_from_user,code
@@ -142,7 +146,7 @@ lstrncpy_from_user:
 	.callinfo NO_CALLS
 	.entry
 	comib,=     0,%r24,$lsfu_done
-	copy        %r26,%r23
+	copy        %r24,%r23
 	get_sr
 1:      ldbs,ma     1(%sr1,%r25),%r1
 $lsfu_loop:
@@ -151,7 +155,7 @@ $lsfu_loop:
 	addib,<>,n  -1,%r24,$lsfu_loop
 2:      ldbs,ma     1(%sr1,%r25),%r1
 $lsfu_done:
-	sub         %r26,%r23,%r28
+	sub         %r23,%r24,%r28
 $lsfu_exit:
 	bv          %r0(%r2)
 	nop
@@ -161,8 +165,13 @@ $lsfu_exit:
 	ldi         -EFAULT,%r28
 
 	.section __ex_table,"a"
+#ifdef __LP64__
+	.dword      1b,(3b-1b)
+	.dword      2b,(3b-2b)
+#else
 	.word       1b,(3b-1b)
-	.word       2b,(2b-1b)
+	.word       2b,(3b-2b)
+#endif
 	.previous
 
 	.procend
@@ -194,7 +203,11 @@ $lclu_done:
 	ldo        1(%r25),%r25
 
 	.section __ex_table,"a"
+#ifdef __LP64__
+	.dword      1b,(2b-1b)
+#else
 	.word       1b,(2b-1b)
+#endif
 	.previous
 
 	.procend
@@ -233,8 +246,13 @@ $lslen_nzero:
 	copy        %r24,%r26    /* reset r26 so 0 is returned on fault */
 
 	.section __ex_table,"a"
+#ifdef __LP64__
+	.dword      1b,(3b-1b)
+	.dword      2b,(3b-2b)
+#else
 	.word       1b,(3b-1b)
-	.word       2b,(2b-1b)
+	.word       2b,(3b-2b)
+#endif
 	.previous
 
 	.procend

arch/parisc/lib/memset.c

+/* Copyright (C) 1991, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Slight modifications for pa-risc linux - Paul Bame <bame@debian.org> */
+
+#include <linux/types.h>
+#include <asm/string.h>
+
+#define OPSIZ (BITS_PER_LONG/8)
+typedef unsigned long op_t;
+
+void *
+memset (void *dstpp, int sc, size_t len)
+{
+  unsigned int c = sc;
+  long int dstp = (long int) dstpp;
+
+  if (len >= 8)
+    {
+      size_t xlen;
+      op_t cccc;
+
+      cccc = (unsigned char) c;
+      cccc |= cccc << 8;
+      cccc |= cccc << 16;
+      if (OPSIZ > 4)
+	/* Do the shift in two steps to avoid warning if long has 32 bits.  */
+	cccc |= (cccc << 16) << 16;
+
+      /* There are at least some bytes to set.
+	 No need to test for LEN == 0 in this alignment loop.  */
+      while (dstp % OPSIZ != 0)
+	{
+	  ((unsigned char *) dstp)[0] = c;
+	  dstp += 1;
+	  len -= 1;
+	}
+
+      /* Write 8 `op_t' per iteration until less than 8 `op_t' remain.  */
+      xlen = len / (OPSIZ * 8);
+      while (xlen > 0)
+	{
+	  ((op_t *) dstp)[0] = cccc;
+	  ((op_t *) dstp)[1] = cccc;
+	  ((op_t *) dstp)[2] = cccc;
+	  ((op_t *) dstp)[3] = cccc;
+	  ((op_t *) dstp)[4] = cccc;
+	  ((op_t *) dstp)[5] = cccc;
+	  ((op_t *) dstp)[6] = cccc;
+	  ((op_t *) dstp)[7] = cccc;
+	  dstp += 8 * OPSIZ;
+	  xlen -= 1;
+	}
+      len %= OPSIZ * 8;
+
+      /* Write 1 `op_t' per iteration until less than OPSIZ bytes remain.  */
+      xlen = len / OPSIZ;
+      while (xlen > 0)
+	{
+	  ((op_t *) dstp)[0] = cccc;
+	  dstp += OPSIZ;
+	  xlen -= 1;
+	}
+      len %= OPSIZ;
+    }
+
+  /* Write the last few bytes.  */
+  while (len > 0)
+    {
+      ((unsigned char *) dstp)[0] = c;
+      dstp += 1;
+      len -= 1;
+    }
+
+  return dstpp;
+}

arch/parisc/tools/Makefile

-# Makefile for MIPS kernel build tools.
-#
-# Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
-# Copyright (C) 1997 Ralf Baechle (ralf@gnu.ai.mit.edu)
-#
-# $Id: Makefile,v 1.3 1999/09/29 05:19:56 grundler Exp $
-#
-TARGET	:= $(TOPDIR)/include/asm-$(ARCH)/offset.h
-
-all: $(TARGET)
-
-$(TARGET): offset.h
-	cmp -s $^ $@ || (cp $^ $(TARGET).new && mv $(TARGET).new $(TARGET))
-
-offset.h: offset.s
-	sed -n '/^@@@/s///p' $^ >$@
-
-offset.s: offset.c
-
-clean:
-	rm -f offset.[hs] $(TARGET).new
-
-include $(TOPDIR)/Rules.make

arch/parisc/vmlinux.lds.S

+#include <linux/config.h>
+
 /* ld script to make hppa Linux kernel */
-OUTPUT_FORMAT("elf32-hppa")
+#ifndef CONFIG_PARISC64
+OUTPUT_FORMAT("elf32-hppa-linux")
 OUTPUT_ARCH(hppa)
+#else
+OUTPUT_FORMAT("elf64-hppa-linux")
+OUTPUT_ARCH(hppa:hppa2.0w)
+#endif
+
 ENTRY(_stext)
+#ifndef CONFIG_PARISC64
 jiffies = jiffies_64 + 4;
+#else
+jiffies = jiffies_64;
+#endif
 SECTIONS
 {
 
-/* right now use 0x10000/0x11000, later when we don't use Console and
- * Boot-Device IODC, we will change this to 0x8000 !!!
- */
-
-  . = 0xc0100000;   
-/*	. = 0x10000;  */
+  . = 0x10100000;
 
   _text = .;			/* Text and read-only data */
   .text BLOCK(16) : {
@@ -22,12 +29,12 @@ SECTIONS
 	*(.gnu.warning)
 	} = 0
 
+  _etext = .;			/* End of text section */
+
   . = ALIGN(16);
   .rodata : { *(.rodata) *(.rodata.*) }
   .kstrtab : { *(.kstrtab) }
 
-  _etext = .;			/* End of text section */
-  
   .data BLOCK(8192) : {			/* Data without special */
 	data_start = .;
 	*(.data)
@@ -42,6 +49,16 @@ SECTIONS
   __ksymtab : { *(__ksymtab) }
   __stop___ksymtab = .;
 
+  __start___kallsyms = .;       /* All kernel symbols */
+  __kallsyms : { *(__kallsyms) }
+  __stop___kallsyms = .;
+
+#ifdef CONFIG_PARISC64
+  . = ALIGN(16);               /* Linkage tables */
+  .opd : { *(.opd) } PROVIDE (__gp = .); 
+  .plt : { *(.plt) } 
+  .dlt : { *(.dlt) }
+#endif
 
   . = ALIGN(16384);
   __init_begin = .;
@@ -49,7 +66,7 @@ SECTIONS
   .init.data : { *(.init.data) }
   . = ALIGN(16);
   __setup_start = .;
-  .setup.init : { *(.setup.init) }
+  .init.setup : { *(.init.setup) }
   __setup_end = .;
   __initcall_start = .;
   .initcall.init : {
@@ -62,9 +79,13 @@ SECTIONS
 	*(.initcall7.init)
   }
   __initcall_end = .;
+  . = ALIGN(32);
+  __per_cpu_start = .;
+  .data.percpu  : { *(.data.percpu) }
+  __per_cpu_end = .;
+  . = ALIGN(4096);
   __init_end = .;
 
-
   init_task BLOCK(16384) : { *(init_task) }  /* The initial task and kernel stack */
 
   _edata = .;			/* End of data section */
@@ -85,4 +106,14 @@ SECTIONS
   .comment 0 : { *(.comment) }
   .note 0 : { *(.note) }	
 
+#ifdef CONFIG_PARISC64
+  /* temporary hack until binutils is fixed to not emit these
+     for static binaries */
+  /DISCARD/ : {
+    *(.dynsym)
+    *(.dynstr)
+    *(.dynamic)
+    *(.hash)
+  }
+#endif
 }