From 8e89ccf89e817630b99d097f600680921c4fa923 Mon Sep 17 00:00:00 2001
From: Stefan Reinauer <stepan@openbios.org>
Date: Thu, 4 May 2006 22:07:30 +0000
Subject: [PATCH] more of the sparc32 port by Blue Swirl
 <blueswir1@hotmail.com>

git-svn-id: svn://coreboot.org/openbios/openbios-devel@4 f158a5a8-5612-0410-a976-696ce0be7e32
---
 Makefile                                 |   4 +-
 arch/sparc32/build.xml                   |  36 ++-
 arch/sparc32/builtin.c                   |   2 +-
 arch/sparc32/entry.S                     |   2 +-
 arch/sparc32/init.fs                     |  37 ---
 arch/sparc32/libgcc/__divdi3.c           |  29 ++
 arch/sparc32/libgcc/__udivdi3.c          |  13 +
 arch/sparc32/libgcc/__udivmoddi4.c       |  33 ++
 arch/sparc32/libgcc/__umoddi3.c          |  16 +
 arch/sparc32/libgcc/ashldi3.c            |  62 ++++
 arch/sparc32/libgcc/ashrdi3.c            |  63 ++++
 arch/sparc32/libgcc/build.xml            |  12 +
 arch/sparc32/multiboot.c                 |   2 +-
 arch/sparc32/openbios.c                  |   9 +-
 arch/sparc32/tree.fs                     | 234 ++++++++++++++
 config/examples/cross-sparc32_config.xml |   3 +
 config/examples/sparc32_config.xml       |   2 +
 drivers/build.xml                        |   4 +
 drivers/esp.c                            | 377 +++++++++++++++++++++++
 drivers/esp.fs                           |  18 ++
 drivers/sbus.c                           |  52 ++++
 drivers/sbus.fs                          |  19 ++
 include/openbios/drivers.h               |   6 +
 include/sparc32/dma.h                    | 213 +++++++++++++
 include/sparc32/io.h                     |   6 +-
 kernel/dict.c                            |   3 +
 26 files changed, 1201 insertions(+), 56 deletions(-)
 create mode 100644 arch/sparc32/libgcc/__divdi3.c
 create mode 100644 arch/sparc32/libgcc/__udivdi3.c
 create mode 100644 arch/sparc32/libgcc/__udivmoddi4.c
 create mode 100644 arch/sparc32/libgcc/__umoddi3.c
 create mode 100644 arch/sparc32/libgcc/ashldi3.c
 create mode 100644 arch/sparc32/libgcc/ashrdi3.c
 create mode 100644 arch/sparc32/libgcc/build.xml
 create mode 100644 arch/sparc32/tree.fs
 create mode 100644 drivers/esp.c
 create mode 100644 drivers/esp.fs
 create mode 100644 drivers/sbus.c
 create mode 100644 drivers/sbus.fs
 create mode 100644 include/sparc32/dma.h

diff --git a/Makefile b/Makefile
index 7350b89..631e16f 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,8 @@ info:
 
 clean:
 	@echo -n "Cleaning up..."
-	@rm -rf $(ODIR) forth.dict.core
+	@rm -rf $(ODIR) forth.dict.core 
+	@find . -type f -name "*~" -exec rm \{\} \;
 	@echo " ok"
 
 directories: clean
@@ -22,6 +23,7 @@ directories: clean
 	@mkdir -p $(ODIR)/target/arch/ppc/pearpc
 	@mkdir -p $(ODIR)/target/arch/ppc/mol
 	@mkdir -p $(ODIR)/target/arch/x86/xbox
+	@mkdir -p $(ODIR)/target/sparc32/libgcc
 	@mkdir -p $(ODIR)/target/kernel
 	@mkdir -p $(ODIR)/target/modules
 	@mkdir -p $(ODIR)/target/fs/grubfs
diff --git a/arch/sparc32/build.xml b/arch/sparc32/build.xml
index 1fec32e..1107db3 100644
--- a/arch/sparc32/build.xml
+++ b/arch/sparc32/build.xml
@@ -1,6 +1,9 @@
 <build condition="SPARC32">
 
+ <include href="libgcc/build.xml"/>
+
  <dictionary name="openbios-sparc32" init="openbios">
+  <object source="tree.fs" target="forth"/>
   <object source="init.fs" target="forth"/>
  </dictionary>
 
@@ -11,6 +14,7 @@
   <object source="boot.c"/>
   <object source="context.c"/>
   <object source="switch.S"/>
+  <object source="udiv.S"/>
   <object source="linux_load.c"/>
   <object source="sys_info.c"/>
   <object source="elfload.c"/>
@@ -18,40 +22,53 @@
   <object source="loadfs.c"/>
  </library>
  
+ <executable name="target/arch/sparc32/entry.o" target="target">
+  <rule><![CDATA[
+	$(CC) $$EXTRACFLAGS $(CFLAGS) $(INCLUDES) -c -o $@ arch/sparc32/entry.S
+  ]]></rule>
+ </executable>
+ <executable name="target/arch/sparc32/vectors.o" target="target">
+  <rule><![CDATA[
+	$(CC) $$EXTRACFLAGS $(CFLAGS) $(INCLUDES) -c -o $@ arch/sparc32/vectors.S
+  ]]></rule>
+ </executable>
+
  <executable name="openbios.multiboot" target="target" condition="IMAGE_ELF_MULTIBOOT">
   <rule>
-	$(LD) -N -T arch/sparc32/ldscript -o $@.nostrip $^ `$(CC) --print-libgcc`
+	$(LD) -N -T arch/sparc32/ldscript -o $@.nostrip $^
 	$(NM) $@.nostrip | sort > $(ODIR)/openbios-multiboot.syms
 	cp $@.nostrip $@
 	$(STRIP) $@
   </rule>
   <object source="multiboot.c"/>
-  <object source="entry.S"/>
-  <object source="vectors.S"/>
+  <external-object source="target/arch/sparc32/vectors.o"/>
+  <external-object source="target/arch/sparc32/entry.o"/>
   <external-object source="libsparc32.a"/>
   <external-object source="libbootstrap.a"/>
   <external-object source="libmodules.a"/>
   <external-object source="libdrivers.a"/>
   <external-object source="liblibc.a"/>
   <external-object source="libfs.a"/>
+  <external-object source="libgcc.a"/>
  </executable>
 
  <executable name="openbios-plain.elf" target="target" condition="IMAGE_ELF">
   <rule>
-	$(LD) -N -T arch/sparc32/ldscript -o $@.nostrip $^ `$(CC) --print-libgcc`
+	$(LD) -N -T arch/sparc32/ldscript -o $@.nostrip $^
 	$(NM) $@.nostrip | sort > $(ODIR)/openbios-plain.syms
 	cp $@.nostrip $@
 	$(STRIP) $@
   </rule>
   <object source="plainboot.c"/>
-  <object source="entry.S"/>
-  <object source="vectors.S"/>
+  <external-object source="target/arch/sparc32/vectors.o"/>
+  <external-object source="target/arch/sparc32/entry.o"/>
   <external-object source="libsparc32.a"/>
   <external-object source="libbootstrap.a"/>
   <external-object source="libmodules.a"/>
   <external-object source="libdrivers.a"/>
   <external-object source="liblibc.a"/>
   <external-object source="libfs.a"/>
+  <external-object source="libgcc.a"/>
  </executable>
 
  <!-- HACK ALERT -->
@@ -77,13 +94,13 @@
 
  <executable name="openbios-builtin.elf" target="target" condition="IMAGE_ELF_EMBEDDED">
   <rule>
-	$(LD) -N -T arch/sparc32/ldscript -o $@.nostrip $^ `$(CC) --print-libgcc`
+	$(LD) -N -T arch/sparc32/ldscript -o $@.nostrip $^
 	$(NM) $@.nostrip | sort > $(ODIR)/openbios-builtin.syms
 	cp $@.nostrip $@
 	$(STRIP) $@
   </rule>
-  <object source="entry.S"/>
-  <object source="vectors.S"/>
+  <external-object source="target/arch/sparc32/vectors.o"/>
+  <external-object source="target/arch/sparc32/entry.o"/>
   <external-object source="target/arch/sparc32/builtin.o"/>
   <external-object source="libsparc32.a"/>
   <external-object source="libbootstrap.a"/>
@@ -91,6 +108,7 @@
   <external-object source="libdrivers.a"/>
   <external-object source="liblibc.a"/>
   <external-object source="libfs.a"/>
+  <external-object source="libgcc.a"/>
  </executable>
  
 </build>
diff --git a/arch/sparc32/builtin.c b/arch/sparc32/builtin.c
index b351c70..46309b8 100644
--- a/arch/sparc32/builtin.c
+++ b/arch/sparc32/builtin.c
@@ -1,4 +1,4 @@
-/* tag: openbios forth starter for builtin dictionary for amd64
+/* tag: openbios forth starter for builtin dictionary for sparc32
  *
  * Copyright (C) 2003 Stefan Reinauer
  *
diff --git a/arch/sparc32/entry.S b/arch/sparc32/entry.S
index 3d30545..0ea3381 100644
--- a/arch/sparc32/entry.S
+++ b/arch/sparc32/entry.S
@@ -181,7 +181,7 @@ entry:
         bl	1b
          add	%o0, 0x4, %o0
 
-        set     0x10000, %sp    ! XXX
+        set     _estack, %sp
         mov     0, %fp
         mov     2, %g1
         wr      %g1, 0x0, %wim			! make window 1 invalid
diff --git a/arch/sparc32/init.fs b/arch/sparc32/init.fs
index 3a2eb9e..75c14e2 100644
--- a/arch/sparc32/init.fs
+++ b/arch/sparc32/init.fs
@@ -4,43 +4,6 @@
   \ ."    0 >  boot hd:2,\boot\vmlinuz root=/dev/hda2" cr
   ; DIAG-initializer
 
-" /" find-device
-  " SUNW,SparcStation-5" encode-string " name" property
-  " " encode-string " idprom" property
-  " SparcStation" encode-string " banner-name" property
-  " sun4m" encode-string " compatible" property
-
-new-device
-  " memory" device-name
-  \ 12230 encode-int " reg" property
-  external
-  : open true ;
-  : close ;
-  \ claim ( phys size align -- base )
-  \ release ( phys size -- )
-finish-device
-
-new-device
-  " STP1012PGA" device-name
-  " cpu" device-type
-  " " encode-string " performance-monitor" property
-  d# 256 encode-int " mmu-nctx" int-property
-  d# 32 encode-int " cache-line-size" int-property
-  d# 512 encode-int " cache-nlines" int-property
-  1 encode-int " mid" int-property
-finish-device
-
-new-device
-  " iommu" device-name
-finish-device
-
-" /iommu" find-device
-new-device
-  " sbus" device-name
-  " hierarchical" device-type
-finish-device
-
-
 : make-openable ( path )
   find-dev if
     begin ?dup while
diff --git a/arch/sparc32/libgcc/__divdi3.c b/arch/sparc32/libgcc/__divdi3.c
new file mode 100644
index 0000000..3641396
--- /dev/null
+++ b/arch/sparc32/libgcc/__divdi3.c
@@ -0,0 +1,29 @@
+/*
+ * arch/i386/libgcc/__divdi3.c
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+
+extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem);
+
+int64_t __divdi3(int64_t num, int64_t den)
+{
+  int minus = 0;
+  int64_t v;
+
+  if ( num < 0 ) {
+    num = -num;
+    minus = 1;
+  }
+  if ( den < 0 ) {
+    den = -den;
+    minus ^= 1;
+  }
+
+  v = __udivmoddi4(num, den, NULL);
+  if ( minus )
+    v = -v;
+
+  return v;
+}
diff --git a/arch/sparc32/libgcc/__udivdi3.c b/arch/sparc32/libgcc/__udivdi3.c
new file mode 100644
index 0000000..901ce2a
--- /dev/null
+++ b/arch/sparc32/libgcc/__udivdi3.c
@@ -0,0 +1,13 @@
+/*
+ * arch/i386/libgcc/__divdi3.c
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+
+extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem);
+
+uint64_t __udivdi3(uint64_t num, uint64_t den)
+{
+  return __udivmoddi4(num, den, NULL);
+}
diff --git a/arch/sparc32/libgcc/__udivmoddi4.c b/arch/sparc32/libgcc/__udivmoddi4.c
new file mode 100644
index 0000000..e77be3a
--- /dev/null
+++ b/arch/sparc32/libgcc/__udivmoddi4.c
@@ -0,0 +1,33 @@
+#include <stdint.h>
+
+extern void __divide_error();
+
+uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
+{
+  uint64_t quot = 0, qbit = 1;
+
+  if ( den == 0 ) {
+    __divide_error();
+    return 0;			/* If trap returns... */
+  }
+
+  /* Left-justify denominator and count shift */
+  while ( (int64_t)den >= 0 ) {
+    den <<= 1;
+    qbit <<= 1;
+  }
+
+  while ( qbit ) {
+    if ( den <= num ) {
+      num -= den;
+      quot += qbit;
+    }
+    den >>= 1;
+    qbit >>= 1;
+  }
+
+  if ( rem_p )
+    *rem_p = num;
+
+  return quot;
+}
diff --git a/arch/sparc32/libgcc/__umoddi3.c b/arch/sparc32/libgcc/__umoddi3.c
new file mode 100644
index 0000000..c007d48
--- /dev/null
+++ b/arch/sparc32/libgcc/__umoddi3.c
@@ -0,0 +1,16 @@
+/*
+ * arch/i386/libgcc/__umoddi3.c
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+
+extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem);
+
+uint64_t __umoddi3(uint64_t num, uint64_t den)
+{
+  uint64_t v;
+
+  (void) __udivmoddi4(num, den, &v);
+  return v;
+}
diff --git a/arch/sparc32/libgcc/ashldi3.c b/arch/sparc32/libgcc/ashldi3.c
new file mode 100644
index 0000000..008403e
--- /dev/null
+++ b/arch/sparc32/libgcc/ashldi3.c
@@ -0,0 +1,62 @@
+/* ashrdi3.c extracted from gcc-2.95.2/libgcc2.c which is: */
+/* Copyright (C) 1989, 92-98, 1999 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC 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, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define BITS_PER_UNIT 8
+
+typedef 	 int SItype	__attribute__ ((mode (SI)));
+typedef unsigned int USItype	__attribute__ ((mode (SI)));
+typedef		 int DItype	__attribute__ ((mode (DI)));
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DIstruct {SItype high, low;};
+
+typedef union
+{
+  struct DIstruct s;
+  DItype ll;
+} DIunion;
+
+DItype
+__ashldi3 (DItype u, word_type b)
+{
+  DIunion w;
+  word_type bm;
+  DIunion uu;
+
+  if (b == 0)
+    return u;
+
+  uu.ll = u;
+
+  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
+  if (bm <= 0)
+    {
+      w.s.low = 0;
+      w.s.high = (USItype)uu.s.low << -bm;
+    }
+  else
+    {
+      USItype carries = (USItype)uu.s.low >> bm;
+      w.s.low = (USItype)uu.s.low << b;
+      w.s.high = ((USItype)uu.s.high << b) | carries;
+    }
+
+  return w.ll;
+}
diff --git a/arch/sparc32/libgcc/ashrdi3.c b/arch/sparc32/libgcc/ashrdi3.c
new file mode 100644
index 0000000..78efb65
--- /dev/null
+++ b/arch/sparc32/libgcc/ashrdi3.c
@@ -0,0 +1,63 @@
+/* ashrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC 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, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define BITS_PER_UNIT 8
+
+typedef 	 int SItype	__attribute__ ((mode (SI)));
+typedef unsigned int USItype	__attribute__ ((mode (SI)));
+typedef		 int DItype	__attribute__ ((mode (DI)));
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DIstruct {SItype high, low;};
+
+typedef union
+{
+  struct DIstruct s;
+  DItype ll;
+} DIunion;
+
+DItype
+__ashrdi3 (DItype u, word_type b)
+{
+  DIunion w;
+  word_type bm;
+  DIunion uu;
+
+  if (b == 0)
+    return u;
+
+  uu.ll = u;
+
+  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
+  if (bm <= 0)
+    {
+      /* w.s.high = 1..1 or 0..0 */
+      w.s.high = uu.s.high >> (sizeof (SItype) * BITS_PER_UNIT - 1);
+      w.s.low = uu.s.high >> -bm;
+    }
+  else
+    {
+      USItype carries = (USItype)uu.s.high << bm;
+      w.s.high = uu.s.high >> b;
+      w.s.low = ((USItype)uu.s.low >> b) | carries;
+    }
+
+  return w.ll;
+}
diff --git a/arch/sparc32/libgcc/build.xml b/arch/sparc32/libgcc/build.xml
new file mode 100644
index 0000000..a746350
--- /dev/null
+++ b/arch/sparc32/libgcc/build.xml
@@ -0,0 +1,12 @@
+<build condition="SPARC32">
+
+ <library name="gcc" type="static" target="target">
+  <object source="ashldi3.c"/>
+  <object source="ashrdi3.c"/>
+  <object source="__divdi3.c"/>
+  <object source="__udivdi3.c"/>
+  <object source="__udivmoddi4.c"/>
+  <object source="__umoddi3.c"/>
+ </library>
+
+</build>
diff --git a/arch/sparc32/multiboot.c b/arch/sparc32/multiboot.c
index c35ab0f..d5877d4 100644
--- a/arch/sparc32/multiboot.c
+++ b/arch/sparc32/multiboot.c
@@ -46,7 +46,7 @@ void collect_multiboot_info(struct sys_info *info)
     struct multiboot_info *mbinfo;
     struct multiboot_mmap *mbmem;
     unsigned mbcount, mbaddr;
-    int i;
+    unsigned int i;
     struct memrange *mmap;
     int mmap_count;
     module_t *mod;
diff --git a/arch/sparc32/openbios.c b/arch/sparc32/openbios.c
index 8d7c0b1..7f09b73 100644
--- a/arch/sparc32/openbios.c
+++ b/arch/sparc32/openbios.c
@@ -8,6 +8,7 @@
 
 #include "openbios/config.h"
 #include "openbios/bindings.h"
+#include "openbios/drivers.h"
 #include "asm/types.h"
 #include "dict.h"
 #include "openbios/kernel.h"
@@ -47,9 +48,11 @@ arch_init( void )
 	void setup_timers(void);
 
 	modules_init();
-#ifdef CONFIG_DRIVER_IDE
-	setup_timers();
-	ob_ide_init();
+#ifdef CONFIG_DRIVER_SBUS
+	ob_sbus_init();
+#endif
+#ifdef CONFIG_DRIVER_ESP
+	ob_esp_init();
 #endif
 	device_end();
 	bind_func("platform-boot", boot );
diff --git a/arch/sparc32/tree.fs b/arch/sparc32/tree.fs
new file mode 100644
index 0000000..3b9f3e2
--- /dev/null
+++ b/arch/sparc32/tree.fs
@@ -0,0 +1,234 @@
+
+" /" find-device
+  2 encode-int " #address-cells" property
+  1 encode-int " #size-cells" property
+  " SUNW,SparcStation-5" encode-string " name" property
+  " " encode-string " idprom" property
+  " SparcStation" encode-string " banner-name" property
+  " sun4m" encode-string " compatible" property
+  : encode-unit encode-unit-sbus ;
+  : decode-unit decode-unit-sbus ;
+
+new-device
+  " memory" device-name
+  external
+  : open true ;
+  : close ;
+  \ claim ( phys size align -- base )
+  \ release ( phys size -- )
+finish-device
+
+new-device
+  " STP1012PGA" device-name
+  " cpu" device-type
+  d# 256 encode-int " mmu-nctx" property
+  d# 32 encode-int " cache-line-size" property
+  d# 512 encode-int " cache-nlines" property
+  1 encode-int " mid" property
+finish-device
+
+new-device
+  " iommu" device-name
+  2 encode-int " #address-cells" property
+  1 encode-int " #size-cells" property
+  h# 0 encode-int h# 10000000 encode-int encode+ h# 00000300 encode-int encode+ " reg" property
+  external
+  : open cr ." opening iommu" cr true ;
+  : close ;
+  : encode-unit encode-unit-sbus ;
+  : decode-unit decode-unit-sbus ;
+finish-device
+
+" /iommu" find-device
+new-device
+  " sbus" device-name
+  " hierarchical" device-type
+  2 encode-int " #address-cells" property
+  1 encode-int " #size-cells" property
+  h# 0 encode-int h# 0 encode-int encode+ h# 0 encode-int encode+ h# 30000000 encode-int encode+ h# 10000000 encode-int encode+
+   h# 1 encode-int encode+ h# 0 encode-int encode+ h# 0 encode-int encode+ h# 40000000 encode-int encode+ h# 10000000 encode-int encode+
+   h# 2 encode-int encode+ h# 0 encode-int encode+ h# 0 encode-int encode+ h# 50000000 encode-int encode+ h# 10000000 encode-int encode+
+   h# 3 encode-int encode+ h# 0 encode-int encode+ h# 0 encode-int encode+ h# 60000000 encode-int encode+ h# 10000000 encode-int encode+
+   h# 4 encode-int encode+ h# 0 encode-int encode+ h# 0 encode-int encode+ h# 70000000 encode-int encode+ h# 10000000 encode-int encode+
+   " ranges" property
+  h# 0 encode-int h# 10001000 encode-int encode+ h# 00000028 encode-int encode+ " reg" property
+  external
+  : open cr ." opening SBus" cr true ;
+  : close ;
+  : encode-unit encode-unit-sbus ;
+  : decode-unit decode-unit-sbus ;
+finish-device
+
+" /iommu/sbus" find-device
+new-device
+  " SUNW,CS4231" device-name
+  " serial" device-type
+  5 encode-int 0 encode-int encode+ " intr" property
+  5 encode-int " interrupts" property
+  h# 3 encode-int h# 0c000000 encode-int encode+ h# 00000040 encode-int encode+ " reg" property
+  " audio" encode-string " alias" property
+finish-device
+
+" /iommu/sbus" find-device
+new-device
+  " SUNW,bpp" device-name
+  h# 4 encode-int h# 0c800000 encode-int encode+ h# 0000001c encode-int encode+ " reg" property
+  h# 33 encode-int 0 encode-int encode+ " intr" property
+finish-device
+
+" /iommu/sbus" find-device
+new-device
+  " SUNW,tcx" device-name
+  " display" device-type
+  h# 1d encode-int " vbporch" property
+  h# 90 encode-int " hbporch" property
+  h# 06 encode-int " vsync" property
+  h# 88 encode-int " hsync" property
+  h# 03 encode-int " vfporch" property
+  h# 18 encode-int " hfporch" property
+  h# 03dfd240 encode-int " pixfreq" property
+  h# 3c encode-int " vfreq" property
+  h# 300 encode-int " height" property
+  h# 400 encode-int " width" property
+  h# 400 encode-int " linebytes" property
+  d# 24 encode-int " depth" property
+  " no" encode-string " tcx-8-bit" property
+  5 encode-int 0 encode-int encode+ " intr" property
+  5 encode-int " interrupts" property
+  2 encode-int h# 00800000 encode-int encode+ h# 00100000 encode-int encode+
+  2 encode-int encode+ h# 02000000 encode-int encode+ h# 00000001 encode-int encode+
+   2 encode-int encode+ h# 04000000 encode-int encode+ h# 00800000 encode-int encode+
+   2 encode-int encode+ h# 06000000 encode-int encode+ h# 00800000 encode-int encode+
+   2 encode-int encode+ h# 0a000000 encode-int encode+ h# 00000001 encode-int encode+
+   2 encode-int encode+ h# 0c000000 encode-int encode+ h# 00000001 encode-int encode+
+   2 encode-int encode+ h# 0e000000 encode-int encode+ h# 00000001 encode-int encode+
+   2 encode-int encode+ h# 00700000 encode-int encode+ h# 00001000 encode-int encode+
+   2 encode-int encode+ h# 00200000 encode-int encode+ h# 00000004 encode-int encode+
+   2 encode-int encode+ h# 00300000 encode-int encode+ h# 0000081c encode-int encode+
+   2 encode-int encode+ h# 00000000 encode-int encode+ h# 00010000 encode-int encode+
+   2 encode-int encode+ h# 00240000 encode-int encode+ h# 00000004 encode-int encode+
+   2 encode-int encode+ h# 00280000 encode-int encode+ h# 00000001 encode-int encode+
+   " reg" property
+finish-device
+
+" /iommu/sbus" find-device
+new-device
+  " espdma" device-name
+  h# 4 encode-int h# 08400000 encode-int encode+ h# 00000010 encode-int encode+ " reg" property
+  external
+  : encode-unit encode-unit-sbus ;
+  : decode-unit decode-unit-sbus ;
+finish-device
+
+" /iommu/sbus" find-device
+new-device
+  " ledma" device-name
+  h# 4 encode-int h# 08400010 encode-int encode+ h# 00000020 encode-int encode+ " reg" property
+  h# 3f encode-int " burst-sizes" property
+  external
+  : encode-unit encode-unit-sbus ;
+  : decode-unit decode-unit-sbus ;
+finish-device
+
+" /iommu/sbus/ledma" find-device
+new-device
+  " le" device-name
+  " network" device-type
+  h# 4 encode-int h# 08c00000 encode-int encode+ h# 00000004 encode-int encode+ " reg" property
+  h# 7 encode-int " busmaster-regval" property
+  h# 26 encode-int 0 encode-int encode+ " intr" property
+finish-device
+
+" /iommu/sbus" find-device
+new-device
+  \ disabled with xxx, bad interactions with Linux
+  " xxxpower-management" device-name
+  h# 4 encode-int h# 0a000000 encode-int encode+ h# 00000010 encode-int encode+ " reg" property
+finish-device
+
+
+\ obio (on-board IO)
+" /" find-device
+new-device
+  " obio" device-name
+  " hierarchical" device-type
+  2 encode-int " #address-cells" property
+  1 encode-int " #size-cells" property
+  h# 0 encode-int h# 0 encode-int encode+ h# 0 encode-int encode+ h# 71000000 encode-int encode+ h# 01000000 encode-int encode+
+   " ranges" property
+  external
+  : open cr ." opening obio" cr true ;
+  : close ;
+  : encode-unit encode-unit-sbus ;
+  : decode-unit decode-unit-sbus ;
+finish-device
+
+" /obio" find-device
+new-device
+  " SUNW,fdtwo" device-name
+  " block" device-type
+  h# 0 encode-int h# 00400000 encode-int encode+ h# 0000000f encode-int encode+ " reg" property
+  h# 2b encode-int 0 encode-int encode+ " intr" property
+finish-device
+
+" /obio" find-device
+new-device
+  " auxio" device-name
+  h# 0 encode-int h# 00900000 encode-int encode+ h# 00000001 encode-int encode+ " reg" property
+finish-device
+
+" /obio" find-device
+new-device
+  " counter" device-name
+  h# 0 encode-int h# 00d00000 encode-int encode+ h# 00000010 encode-int encode+
+  h# 0 encode-int encode+ h# 00d10000 encode-int encode+ h# 00000010 encode-int encode+
+   " reg" property
+finish-device
+
+" /obio" find-device
+new-device
+  " eeprom" device-name
+  h# 0 encode-int h# 00200000 encode-int encode+ h# 00002000 encode-int encode+ " reg" property
+  " mk48t08" model
+finish-device
+
+" /obio" find-device
+new-device
+  " interrupt" device-name
+  h# 0 encode-int h# 00e00000 encode-int encode+ h# 00000010 encode-int encode+
+  h# 0 encode-int encode+ h# 00e10000 encode-int encode+ h# 00000010 encode-int encode+
+   " reg" property
+finish-device
+
+" /obio" find-device
+new-device
+  " power" device-name
+  h# 0 encode-int h# 00910000 encode-int encode+ h# 00000001 encode-int encode+ " reg" property
+  h# 22 encode-int 0 encode-int encode+ " intr" property
+finish-device
+
+" /obio" find-device
+new-device
+  " slavioconfig" device-name
+  h# 0 encode-int h# 00800000 encode-int encode+ h# 00000001 encode-int encode+ " reg" property
+finish-device
+
+" /obio" find-device
+new-device
+  " zs" device-name
+  " serial" device-type
+  h# 0 encode-int h# 00000000 encode-int encode+ h# 00000008 encode-int encode+ " reg" property
+  1 encode-int " slave" property
+  h# 2c encode-int 0 encode-int encode+ " intr" property
+  1 encode-int " keyboard" property
+  1 encode-int " mouse" property
+finish-device
+
+" /obio" find-device
+new-device
+  " zs" device-name
+  " serial" device-type
+  h# 0 encode-int h# 00100000 encode-int encode+ h# 00000008 encode-int encode+ " reg" property
+  0 encode-int " slave" property
+  h# 2c encode-int 0 encode-int encode+ " intr" property
+finish-device
diff --git a/config/examples/cross-sparc32_config.xml b/config/examples/cross-sparc32_config.xml
index 80ee00f..820b3ad 100644
--- a/config/examples/cross-sparc32_config.xml
+++ b/config/examples/cross-sparc32_config.xml
@@ -26,6 +26,7 @@
   <option name="CONFIG_DEBUG_INTERPRETER" type="boolean" value="false"/>
   <option name="CONFIG_DEBUG_CONSOLE" type="boolean" value="true"/>
   <option name="CONFIG_DEBUG_CONSOLE_SERIAL" type="boolean" value="true"/>
+  <option name="CONFIG_DEBUG_ESP" type="boolean" value="true"/>
   <option name="CONFIG_SERIAL_PORT" type="integer" value="0"/>
   <option name="CONFIG_SERIAL_SPEED" type="integer" value="115200"/>
   
@@ -61,6 +62,8 @@
   <option name="CONFIG_LINUXBIOS" type="boolean" value="false"/>
  
   <!-- Drivers -->
+  <option name="CONFIG_DRIVER_SBUS" type="boolean" value="true"/>
+  <option name="CONFIG_DRIVER_ESP" type="boolean" value="true"/>
   <option name="CONFIG_DRIVER_FLOPPY" type="boolean" value="false"/>
 
 </config>
diff --git a/config/examples/sparc32_config.xml b/config/examples/sparc32_config.xml
index 6a3f434..f85ac12 100644
--- a/config/examples/sparc32_config.xml
+++ b/config/examples/sparc32_config.xml
@@ -61,6 +61,8 @@
   <option name="CONFIG_LINUXBIOS" type="boolean" value="false"/>
  
   <!-- Drivers -->
+  <option name="CONFIG_DRIVER_SBUS" type="boolean" value="true"/>
+  <option name="CONFIG_DRIVER_ESP" type="boolean" value="true"/>
   <option name="CONFIG_DRIVER_FLOPPY" type="boolean" value="false"/>
 
 </config>
diff --git a/drivers/build.xml b/drivers/build.xml
index bfa3db5..b61486b 100644
--- a/drivers/build.xml
+++ b/drivers/build.xml
@@ -8,12 +8,16 @@
   <object source="adb.c"   condition="DRIVER_ADB"/>
   <object source="cuda.c"   condition="DRIVER_ADB"/>
   <object source="floppy.c"   condition="DRIVER_FLOPPY"/>
+  <object source="sbus.c"   condition="DRIVER_SBUS"/>
+  <object source="esp.c"   condition="DRIVER_ESP"/>
  </library>
 
  <dictionary name="openbios" target="forth">
   <object source="pci.fs" condition="DRIVER_PCI"/>
   <object source="ide.fs" condition="DRIVER_IDE"/>
   <object source="adb.fs" condition="DRIVER_ADB"/>
+  <object source="sbus.fs" condition="DRIVER_SBUS"/>
+  <object source="esp.fs" condition="DRIVER_ESP"/>
  </dictionary>
   
 </build>
diff --git a/drivers/esp.c b/drivers/esp.c
new file mode 100644
index 0000000..5fa48a8
--- /dev/null
+++ b/drivers/esp.c
@@ -0,0 +1,377 @@
+/*
+ *   OpenBIOS ESP driver
+ *   
+ *   Copyright (C) 2004 Jens Axboe <axboe@suse.de>
+ *   Copyright (C) 2005 Stefan Reinauer <stepan@openbios.org>
+ *
+ *   Credit goes to Hale Landis for his excellent ata demo software
+ *   OF node handling and some fixes by Stefan Reinauer
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   version 2
+ *
+ */
+
+#include "openbios/config.h"
+#include "openbios/bindings.h"
+#include "openbios/kernel.h"
+#include "libc/byteorder.h"
+#include "libc/vsprintf.h"
+
+#include "openbios/drivers.h"
+#include "asm/dma.h"
+
+#define PHYS_JJ_ESPDMA  0x78400000      /* ESP DMA controller */
+#define PHYS_JJ_ESP     0x78800000      /* ESP SCSI */
+
+#define REGISTER_NAMED_NODE( name, path )   do {                        \
+        bind_new_node( name##_flags_, name##_size_,                     \
+                       path, name##_m, sizeof(name##_m)/sizeof(method_t)); \
+    } while(0)
+
+#define REGISTER_NODE_METHODS( name, path )   do {                      \
+        char *paths[1];                                                  \
+                                                                        \
+        paths[0] = path;                                                \
+        bind_node( name##_flags_, name##_size_,                         \
+                   paths, 1, name##_m, sizeof(name##_m)/sizeof(method_t)); \
+    } while(0)
+
+struct esp_dma {
+    struct sparc_dma_registers *regs;
+    enum dvma_rev revision;
+};
+
+typedef struct sd_private {
+    unsigned int id;
+    unsigned int hw_sector;
+} sd_private_t;
+
+struct esp_regs {
+    unsigned int regs[16];
+};
+
+typedef struct esp_private {
+    volatile struct esp_regs *ll;
+    __u32 buffer_dvma;
+    unsigned int irq;        /* device IRQ number    */
+
+    struct esp_dma *espdma;         /* If set this points to espdma    */
+
+    unsigned char *buffer;
+} esp_private_t;
+
+/* DECLARE data structures for the nodes.  */
+DECLARE_UNNAMED_NODE(ob_sd, INSTALL_OPEN, sizeof(sd_private_t));
+DECLARE_UNNAMED_NODE(ob_esp, INSTALL_OPEN, sizeof(esp_private_t));
+
+// offset is multiple of 512, len in bytes
+static int
+ob_sd_read_sectors(sd_private_t *sd, int offset, void *dest, short len)
+{
+#if 0
+    unsigned char *buffer = malloc(2048); // XXX setup dvma
+
+    // Set SCSI target
+    outb(PHYS_JJ_ESP + 4*4, sd->id & 7);
+    // Set DMA address
+    outl(PHYS_JJ_ESPDMA + 4, buffer);
+    // Set DMA length
+    outb(PHYS_JJ_ESP + 0*4, 10);
+    outb(PHYS_JJ_ESP + 1*4, 0);
+    // Set DMA direction
+    outl(PHYS_JJ_ESPDMA + 0, 0x000);
+    // Setup command = Read(10)
+    buffer[0] = 0x80;
+    buffer[1] = 0x28;
+    buffer[2] = 0x00;
+    buffer[3] = (offset >> 24) & 0xff;
+    buffer[4] = (offset >> 16) & 0xff;
+    buffer[5] = (offset >> 8) & 0xff;
+    buffer[6] = offset & 0xff;
+    buffer[7] = 0x00;
+    buffer[8] = ((len / 512) >> 8) & 0xff;
+    buffer[9] = (len / 512) & 0xff;
+    // Set ATN, issue command
+    outb(PHYS_JJ_ESP + 3*4, 0xc2);
+
+    // Set DMA length
+    outb(PHYS_JJ_ESP + 0*4, len & 0xff);
+    outb(PHYS_JJ_ESP + 1*4, (len >> 8) & 0xff);
+    // Set DMA direction
+    outl(PHYS_JJ_ESPDMA + 0, 0x100);
+    // Transfer
+    outb(PHYS_JJ_ESP + 3*4, 0x90);
+    memcpy(buffer, dest, len);
+    free(buffer);
+#endif
+    return 0 * sd->id * offset * len * (int)dest;
+}
+
+static void
+ob_sd_read_blocks(sd_private_t *sd)
+{
+    cell n = POP(), cnt=n;
+    ucell blk = POP();
+    char *dest = (char*)POP();
+
+#ifdef CONFIG_DEBUG_ESP
+    printk("ob_sd_read_blocks %lx block=%d n=%d\n", (unsigned long)dest, blk, n );
+#endif
+    while (n) {
+        int len = n;
+
+        if (ob_sd_read_sectors(sd, blk, dest, len)) {
+            printk("ob_ide_read_blocks: error\n");
+            RET(0);
+        }
+        dest += len * sd->hw_sector;
+        n -= len;
+        blk += len;
+    }
+    PUSH(cnt);
+}
+
+static void
+ob_sd_block_size(sd_private_t *sd)
+{
+    PUSH(sd->hw_sector);
+}
+
+static unsigned int
+get_block_size(sd_private_t *sd)
+{
+#if 1
+    return 512 + sd->id * 0; // XXX
+#else
+    unsigned char *buffer = malloc(64); // XXX setup dvma
+    unsigned int ret;
+
+    // Set SCSI target
+    outb(PHYS_JJ_ESP + 4*4, sd->id & 7);
+    // Set DMA address
+    outl(PHYS_JJ_ESPDMA + 4, buffer);
+    // Set DMA length
+    outb(PHYS_JJ_ESP + 0*4, 10);
+    outb(PHYS_JJ_ESP + 1*4, 0);
+    // Set DMA direction
+    outl(PHYS_JJ_ESPDMA + 0, 0x000);
+    // Setup command = Read Capacity
+    buffer[0] = 0x80;
+    buffer[1] = 0x25;
+    buffer[2] = 0x00;
+    buffer[3] = 0x00;
+    buffer[4] = 0x00;
+    buffer[5] = 0x00;
+    buffer[6] = 0x00;
+    buffer[7] = 0x00;
+    buffer[8] = 0x00;
+    buffer[9] = 0x00;
+    buffer[10] = 0x00;
+    // Set ATN, issue command
+    outb(PHYS_JJ_ESP + 3*4, 0xc2);
+    
+    // Set DMA length
+    outb(PHYS_JJ_ESP + 0*4, 0);
+    outb(PHYS_JJ_ESP + 1*4, 8 & 0xff);
+    // Set DMA direction
+    outl(PHYS_JJ_ESPDMA + 0, 0x100);
+    // Transfer
+    outb(PHYS_JJ_ESP + 3*4, 0x90);
+    ret = (buffer[4] << 24) | (buffer[5] << 16) | (buffer[6] << 8) | buffer[7];
+    free(buffer);
+    return ret;
+#endif
+}
+
+static void
+ob_sd_open(sd_private_t *sd)
+{
+    int ret=1;
+    phandle_t ph;
+
+    fword("my-unit");
+    sd->id = POP();
+    sd->hw_sector = get_block_size(sd);
+
+#ifdef CONFIG_DEBUG_ESP
+    printk("opening drive %d\n", sd->id);
+#endif
+
+#if 0
+    dump_drive(drive);
+
+    if (drive->type != esp_type_ata)
+        ret= !ob_esp_atapi_drive_ready(drive);
+#endif
+
+    selfword("open-deblocker");
+
+    /* interpose disk-label */
+    ph = find_dev("/packages/disk-label");
+    fword("my-args");
+    PUSH_ph( ph );
+    fword("interpose");
+    
+    RET ( -ret );
+}
+
+static void
+ob_sd_close(__attribute__((unused)) sd_private_t *sd)
+{
+    selfword("close-deblocker");
+}
+
+NODE_METHODS(ob_sd) = {
+    { "open",           ob_sd_open },
+    { "close",          ob_sd_close },
+    { "read-blocks",    ob_sd_read_blocks },
+    { "block-size",     ob_sd_block_size },
+};
+
+static void
+ob_esp_initialize(esp_private_t *esp)
+{
+    phandle_t ph=get_cur_dev();
+
+    set_int_property(ph, "#address-cells", 2);
+    set_int_property(ph, "#size-cells", 0);
+
+    /* set device type */
+    push_str("scsi");
+    fword("device-type");
+
+    /* set reg */
+    PUSH(4);
+    fword("encode-int");
+    PUSH(0x08800000);
+    fword("encode-int");
+    fword("encode+");
+    PUSH(0x00000010);
+    fword("encode-int");
+    fword("encode+");
+    push_str("reg");
+    fword("property");
+#if 1
+    esp->ll = (void *)PHYS_JJ_ESP;
+    esp->buffer = (void *)0x100000; // XXX
+#else
+    /* Get the IO region */
+    esp->ll = map_io(PHYS_JJ_ESP, sizeof (struct esp_regs));
+    if (esp->ll == 0)
+        return -1;
+
+    esp->buffer = dvma_alloc(BUFSIZE, &esp->buffer_dvma);
+    esp->espdma = espdma;
+#endif
+    // Chip reset
+    outb((int)esp->ll + 3*2, 2);
+}
+
+static void
+ob_esp_decodeunit(__attribute__((unused)) esp_private_t * esp)
+{
+    fword("decode-unit-scsi");
+}
+
+
+static void
+ob_esp_encodeunit(__attribute__((unused)) esp_private_t * esp)
+{
+    fword("encode-unit-scsi");
+}
+
+NODE_METHODS(ob_esp) = {
+    { NULL,             ob_esp_initialize },
+    { "decode-unit",    ob_esp_decodeunit },
+    { "encode-unit",    ob_esp_encodeunit },
+};
+
+static int
+drive_present(int drive)
+{
+    // XXX
+    if (drive == 0 || drive == 2)
+        return 1;
+    return 0;
+}
+
+static int
+drive_cdrom(int drive)
+{
+    // XXX
+    if (drive == 2)
+        return 1;
+    return 0;
+}
+
+static void
+add_alias(const unsigned char *device, const unsigned char *alias)
+{
+    push_str("/aliases");
+    fword("find-device");
+    push_str(device);
+    fword("encode-string");
+    push_str(alias);
+    fword("encode-string");
+    fword("property");
+}
+
+int ob_esp_init(void)
+{
+    int id, diskcount = 0, cdcount = 0, *counter_ptr;
+    char nodebuff[256], aliasbuff[256];
+    const char *type;
+
+#ifdef CONFIG_DEBUG_ESP
+    printk("Initializing SCSI...");
+#endif
+    sprintf(nodebuff, "/iommu/sbus/espdma/esp");
+    REGISTER_NAMED_NODE(ob_esp, nodebuff);
+    device_end();
+#ifdef CONFIG_DEBUG_ESP
+    printk("done\n");
+    printk("Initializing SCSI devices...");
+#endif
+    for (id = 0; id < 8; id++) {
+        if (!drive_present(id))
+            continue;
+        push_str("/iommu/sbus/espdma/esp");
+        fword("find-device");
+        fword("new-device");
+        push_str("sd");
+        fword("device-name");
+        push_str("block");
+        fword("device-type");
+        fword("is-deblocker");
+        PUSH(id);
+        fword("encode-int");
+        PUSH(0);
+        fword("encode-int");
+        fword("encode+");
+        push_str("reg");
+        fword("property");
+        fword("finish-device");
+        sprintf(nodebuff, "/iommu/sbus/espdma/esp/sd@%d,0", id);
+        REGISTER_NODE_METHODS(ob_sd, nodebuff);
+        if (drive_cdrom(id)) {
+            type = "cdrom";
+            counter_ptr = &cdcount;
+        } else {
+            type = "disk";
+            counter_ptr = &diskcount;
+        }
+        if (*counter_ptr == 0) {
+            add_alias(nodebuff, type);
+        }
+        sprintf(aliasbuff, "%s%d", type, *counter_ptr);
+        (*counter_ptr)++;
+        add_alias(nodebuff, aliasbuff);
+    }
+#ifdef CONFIG_DEBUG_ESP
+    printk("done\n");
+#endif
+
+    return 0;
+}
diff --git a/drivers/esp.fs b/drivers/esp.fs
new file mode 100644
index 0000000..9e37c0a
--- /dev/null
+++ b/drivers/esp.fs
@@ -0,0 +1,18 @@
+\ -------------------------------------------------------------------------
+\ SCSI encode/decode unit
+\ -------------------------------------------------------------------------
+
+: decode-unit-scsi ( str len -- id lun )
+  ascii , left-split
+  ( addr-R len-R addr-L len-L )
+  parse-hex
+  -rot parse-hex
+  swap
+;
+
+: encode-unit-scsi ( id lun -- str len)
+  swap
+  pocket tohexstr
+  " ," pocket tmpstrcat >r
+  rot pocket tohexstr r> tmpstrcat drop
+;
diff --git a/drivers/sbus.c b/drivers/sbus.c
new file mode 100644
index 0000000..ba2c30b
--- /dev/null
+++ b/drivers/sbus.c
@@ -0,0 +1,52 @@
+/*
+ *   OpenBIOS SBus driver
+ *   
+ *   (C) 2004 Stefan Reinauer <stepan@openbios.org>
+ *   (C) 2005 Ed Schouten <ed@fxq.nl>
+ * 
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   version 2
+ *
+ */
+
+#include "openbios/config.h"
+#include "openbios/bindings.h"
+#include "openbios/kernel.h"
+#include "libc/byteorder.h"
+#include "libc/vsprintf.h"
+
+#include "openbios/drivers.h"
+
+static void
+ob_sbus_open(int *idx)
+{
+	int ret=1;
+	RET ( -ret );
+}
+
+static void
+ob_sbus_close(int *idx)
+{
+	selfword("close-deblocker");
+}
+
+static void
+ob_sbus_initialize(int *idx)
+{
+}
+
+
+NODE_METHODS(ob_sbus_node) = {
+	{ NULL,			ob_sbus_initialize	},
+	{ "open",		ob_sbus_open		},
+	{ "close",		ob_sbus_close		},
+};
+
+
+int ob_sbus_init(void)
+{
+	printk("Initializing SBus devices...\n");
+	
+	return 0;
+}
diff --git a/drivers/sbus.fs b/drivers/sbus.fs
new file mode 100644
index 0000000..2097fa8
--- /dev/null
+++ b/drivers/sbus.fs
@@ -0,0 +1,19 @@
+\ -------------------------------------------------------------------------
+\ SBus encode/decode unit
+\ -------------------------------------------------------------------------
+
+: decode-unit-sbus ( str len -- id lun )
+  ascii , left-split
+  ( addr-R len-R addr-L len-L )
+  parse-hex
+  -rot parse-hex
+  swap
+;
+
+: encode-unit-sbus ( id lun -- str len)
+  swap
+  pocket tohexstr
+  " ," pocket tmpstrcat >r
+  rot pocket tohexstr r> tmpstrcat drop
+;
+
diff --git a/include/openbios/drivers.h b/include/openbios/drivers.h
index a40af0a..f34385e 100644
--- a/include/openbios/drivers.h
+++ b/include/openbios/drivers.h
@@ -14,7 +14,13 @@
 #ifdef CONFIG_DRIVER_PCI
 int ob_pci_init(void);
 #endif
+#ifdef CONFIG_DRIVER_SBUS
+int ob_sbus_init(void);
+#endif
 #ifdef CONFIG_DRIVER_IDE
 int ob_ide_init(void);
 #endif
+#ifdef CONFIG_DRIVER_ESP
+int ob_esp_init(void);
+#endif
 
diff --git a/include/sparc32/dma.h b/include/sparc32/dma.h
new file mode 100644
index 0000000..e131055
--- /dev/null
+++ b/include/sparc32/dma.h
@@ -0,0 +1,213 @@
+/*
+ * Local copy of include/asm-sparc/dma.h
+ *
+ * Copyright 1995 (C) David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _ASM_SPARC_DMA_H
+#define _ASM_SPARC_DMA_H
+
+/* #include <linux/kernel.h> */
+/* #include <linux/types.h> */
+typedef unsigned int __u32;
+
+/* These are irrelevant for Sparc DMA, but we leave it in so that
+ * things can compile.
+ */
+#define MAX_DMA_CHANNELS 8
+#define MAX_DMA_ADDRESS  (~0UL)
+#define DMA_MODE_READ    1
+#define DMA_MODE_WRITE   2
+
+/* Useful constants */
+#define SIZE_16MB      (16*1024*1024)
+#define SIZE_64K       (64*1024)
+
+/* Structure to describe the current status of DMA registers on the Sparc */
+struct sparc_dma_registers {
+  __volatile__ __u32 cond_reg;	/* DMA condition register */
+  __volatile__ __u32 st_addr;	/* Start address of this transfer */
+  __volatile__ __u32 cnt;	/* How many bytes to transfer */
+  __volatile__ __u32 dma_test;	/* DMA test register */
+};
+
+/* DVMA chip revisions */
+enum dvma_rev {
+	dvmarev0,
+	dvmaesc1,
+	dvmarev1,
+	dvmarev2,
+	dvmarev3,
+	dvmarevplus,
+	dvmahme
+};
+
+#define DMA_HASCOUNT(rev)  ((rev)==dvmaesc1)
+
+#if 0
+/* Linux DMA information structure, filled during probe. */
+struct Linux_SBus_DMA {
+	struct Linux_SBus_DMA *next;
+	struct linux_sbus_device *SBus_dev;
+	struct sparc_dma_registers *regs;
+
+	/* Status, misc info */
+	int node;                /* Prom node for this DMA device */
+	int running;             /* Are we doing DMA now? */
+	int allocated;           /* Are we "owned" by anyone yet? */
+
+	/* Transfer information. */
+	unsigned long addr;      /* Start address of current transfer */
+	int nbytes;              /* Size of current transfer */
+	int realbytes;           /* For splitting up large transfers, etc. */
+
+	/* DMA revision */
+	enum dvma_rev revision;
+};
+
+extern struct Linux_SBus_DMA *dma_chain;
+#endif
+
+/* Broken hardware... */
+/* Have to sort this out. Does rev0 work fine on sun4[cmd] without isbroken?
+ * Or is rev0 present only on sun4 boxes? -jj */
+#define DMA_ISBROKEN(dma)    ((dma)->revision == dvmarev0 || (dma)->revision == dvmarev1)
+#define DMA_ISESC1(dma)      ((dma)->revision == dvmaesc1)
+
+/* Fields in the cond_reg register */
+/* First, the version identification bits */
+#define DMA_DEVICE_ID    0xf0000000        /* Device identification bits */
+#define DMA_VERS0        0x00000000        /* Sunray DMA version */
+#define DMA_ESCV1        0x40000000        /* DMA ESC Version 1 */
+#define DMA_VERS1        0x80000000        /* DMA rev 1 */
+#define DMA_VERS2        0xa0000000        /* DMA rev 2 */
+#define DMA_VERHME       0xb0000000        /* DMA hme gate array */
+#define DMA_VERSPLUS     0x90000000        /* DMA rev 1 PLUS */
+
+#define DMA_HNDL_INTR    0x00000001        /* An IRQ needs to be handled */
+#define DMA_HNDL_ERROR   0x00000002        /* We need to take an error */
+#define DMA_FIFO_ISDRAIN 0x0000000c        /* The DMA FIFO is draining */
+#define DMA_INT_ENAB     0x00000010        /* Turn on interrupts */
+#define DMA_FIFO_INV     0x00000020        /* Invalidate the FIFO */
+#define DMA_ACC_SZ_ERR   0x00000040        /* The access size was bad */
+#define DMA_FIFO_STDRAIN 0x00000040        /* DMA_VERS1 Drain the FIFO */
+#define DMA_RST_SCSI     0x00000080        /* Reset the SCSI controller */
+#define DMA_RST_ENET     DMA_RST_SCSI      /* Reset the ENET controller */
+#define DMA_ST_WRITE     0x00000100        /* write from device to memory */
+#define DMA_ENABLE       0x00000200        /* Fire up DMA, handle requests */
+#define DMA_PEND_READ    0x00000400        /* DMA_VERS1/0/PLUS Pending Read */
+#define DMA_ESC_BURST    0x00000800        /* 1=16byte 0=32byte */
+#define DMA_READ_AHEAD   0x00001800        /* DMA read ahead partial longword */
+#define DMA_DSBL_RD_DRN  0x00001000        /* No EC drain on slave reads */
+#define DMA_BCNT_ENAB    0x00002000        /* If on, use the byte counter */
+#define DMA_TERM_CNTR    0x00004000        /* Terminal counter */
+#define DMA_SCSI_SBUS64  0x00008000        /* HME: Enable 64-bit SBUS mode. */
+#define DMA_CSR_DISAB    0x00010000        /* No FIFO drains during csr */
+#define DMA_SCSI_DISAB   0x00020000        /* No FIFO drains during reg */
+#define DMA_DSBL_WR_INV  0x00020000        /* No EC inval. on slave writes */
+#define DMA_ADD_ENABLE   0x00040000        /* Special ESC DVMA optimization */
+#define DMA_E_BURST8	 0x00040000	   /* ENET: SBUS r/w burst size */
+#define DMA_BRST_SZ      0x000c0000        /* SCSI: SBUS r/w burst size */
+#define DMA_BRST64       0x00080000        /* SCSI: 64byte bursts (HME on UltraSparc only) */
+#define DMA_BRST32       0x00040000        /* SCSI: 32byte bursts */
+#define DMA_BRST16       0x00000000        /* SCSI: 16byte bursts */
+#define DMA_BRST0        0x00080000        /* SCSI: no bursts (non-HME gate arrays) */
+#define DMA_ADDR_DISAB   0x00100000        /* No FIFO drains during addr */
+#define DMA_2CLKS        0x00200000        /* Each transfer = 2 clock ticks */
+#define DMA_3CLKS        0x00400000        /* Each transfer = 3 clock ticks */
+#define DMA_EN_ENETAUI   DMA_3CLKS         /* Put lance into AUI-cable mode */
+#define DMA_CNTR_DISAB   0x00800000        /* No IRQ when DMA_TERM_CNTR set */
+#define DMA_AUTO_NADDR   0x01000000        /* Use "auto nxt addr" feature */
+#define DMA_SCSI_ON      0x02000000        /* Enable SCSI dma */
+#define DMA_PARITY_OFF   0x02000000        /* HME: disable parity checking */
+#define DMA_LOADED_ADDR  0x04000000        /* Address has been loaded */
+#define DMA_LOADED_NADDR 0x08000000        /* Next address has been loaded */
+#define DMA_RESET_FAS366 0x08000000        /* HME: Assert RESET to FAS366 */
+
+/* Values describing the burst-size property from the PROM */
+#define DMA_BURST1       0x01
+#define DMA_BURST2       0x02
+#define DMA_BURST4       0x04
+#define DMA_BURST8       0x08
+#define DMA_BURST16      0x10
+#define DMA_BURST32      0x20
+#define DMA_BURST64      0x40
+#define DMA_BURSTBITS    0x7f
+
+/* Determine highest possible final transfer address given a base */
+#define DMA_MAXEND(addr) (0x01000000UL-(((unsigned long)(addr))&0x00ffffffUL))
+
+/* Yes, I hack a lot of elisp in my spare time... */
+#define DMA_ERROR_P(regs)  ((((regs)->cond_reg) & DMA_HNDL_ERROR))
+#define DMA_IRQ_P(regs)    ((((regs)->cond_reg) & (DMA_HNDL_INTR | DMA_HNDL_ERROR)))
+#define DMA_WRITE_P(regs)  ((((regs)->cond_reg) & DMA_ST_WRITE))
+#define DMA_OFF(regs)      ((((regs)->cond_reg) &= (~DMA_ENABLE)))
+#define DMA_INTSOFF(regs)  ((((regs)->cond_reg) &= (~DMA_INT_ENAB)))
+#define DMA_INTSON(regs)   ((((regs)->cond_reg) |= (DMA_INT_ENAB)))
+#define DMA_PUNTFIFO(regs) ((((regs)->cond_reg) |= DMA_FIFO_INV))
+#define DMA_SETSTART(regs, addr)  ((((regs)->st_addr) = (char *) addr))
+#define DMA_BEGINDMA_W(regs) \
+        ((((regs)->cond_reg |= (DMA_ST_WRITE|DMA_ENABLE|DMA_INT_ENAB))))
+#define DMA_BEGINDMA_R(regs) \
+        ((((regs)->cond_reg |= ((DMA_ENABLE|DMA_INT_ENAB)&(~DMA_ST_WRITE)))))
+
+#if 0
+
+/* For certain DMA chips, we need to disable ints upon irq entry
+ * and turn them back on when we are done.  So in any ESP interrupt
+ * handler you *must* call DMA_IRQ_ENTRY upon entry and DMA_IRQ_EXIT
+ * when leaving the handler.  You have been warned...
+ */
+#define DMA_IRQ_ENTRY(dma, dregs) do { \
+        if(DMA_ISBROKEN(dma)) DMA_INTSOFF(dregs); \
+   } while (0)
+
+#define DMA_IRQ_EXIT(dma, dregs) do { \
+	if(DMA_ISBROKEN(dma)) DMA_INTSON(dregs); \
+   } while(0)
+
+
+/* Pause until counter runs out or BIT isn't set in the DMA condition
+ * register.
+ */
+extern __inline__ void sparc_dma_pause(struct sparc_dma_registers *regs,
+				       unsigned long bit)
+{
+	int ctr = 50000;   /* Let's find some bugs ;) */
+
+	/* Busy wait until the bit is not set any more */
+	while((regs->cond_reg&bit) && (ctr>0)) {
+		ctr--;
+		__delay(5);
+	}
+
+	/* Check for bogus outcome. */
+	if(!ctr)
+		panic("DMA timeout");
+}
+
+/* Reset the friggin' thing... */
+#define DMA_RESET(dma) do { \
+	struct sparc_dma_registers *regs = dma->regs;                      \
+	/* Let the current FIFO drain itself */                            \
+	sparc_dma_pause(regs, (DMA_FIFO_ISDRAIN));                         \
+	/* Reset the logic */                                              \
+	regs->cond_reg |= (DMA_RST_SCSI);     /* assert */                 \
+	__delay(400);                         /* let the bits set ;) */    \
+	regs->cond_reg &= ~(DMA_RST_SCSI);    /* de-assert */              \
+	sparc_dma_enable_interrupts(regs);    /* Re-enable interrupts */   \
+	/* Enable FAST transfers if available */                           \
+	if(dma->revision>dvmarev1) regs->cond_reg |= DMA_3CLKS;            \
+	dma->running = 0;                                                  \
+} while(0)
+
+#define for_each_dvma(dma) \
+        for((dma) = dma_chain; (dma); (dma) = (dma)->next)
+
+extern int get_dma_list(char *);
+extern int request_dma(unsigned int, __const__ char *);
+extern void free_dma(unsigned int);
+
+#endif
+
+#endif /* !(_ASM_SPARC_DMA_H) */
diff --git a/include/sparc32/io.h b/include/sparc32/io.h
index a3492fc..1314404 100644
--- a/include/sparc32/io.h
+++ b/include/sparc32/io.h
@@ -171,9 +171,9 @@ static inline void _outsw(volatile uint16_t * port, const void *buf,
 #define inb(reg) ((u8)0xff)
 #define inw(reg) ((u16)0xffff)
 #define inl(reg) ((u32)0xffffffff)
-#define outb(reg, val) // nothing
-#define outw(reg, val) // nothing
-#define outl(reg, val) // nothing
+#define outb(reg, val) do{} while(0)
+#define outw(reg, val) do{} while(0)
+#define outl(reg, val) do{} while(0)
 #else
 extern u8 inb(u32 reg);
 extern u16 inw(u32 reg);
diff --git a/kernel/dict.c b/kernel/dict.c
index b67b58c..74b475c 100644
--- a/kernel/dict.c
+++ b/kernel/dict.c
@@ -144,7 +144,10 @@ ucell load_dictionary(const char *data, ucell len)
 
 	if(checksum) {
 		printk("Checksum invalid (%08x)!\n", checksum);
+#ifndef __sparc__ // XXX hack
+#warn "FIXME: checksum calculation does not seem to work on SPARC32"
 		return 0;
+#endif
 	}
 
 	data += sizeof(dictionary_header_t);