Merge http://www.denx.de/git/u-boot

7 files changed, 393 insertions, 41 deletions

diff --git a/common/Makefile b/common/Makefile
index 07ddc95453..0106088e24 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -41,7 +41,7 @@ COBJS	= main.o ACEX1K.o altera.o bedbug.o circbuf.o \
 	  cmd_pci.o cmd_pcmcia.o cmd_portio.o \
 	  cmd_reginfo.o cmd_reiser.o cmd_scsi.o cmd_spi.o cmd_universe.o \
 	  cmd_usb.o cmd_vfd.o \
-	  command.o console.o devices.o dlmalloc.o docecc.o \
+	  command.o console.o cyclon2.o devices.o dlmalloc.o docecc.o \
 	  environment.o env_common.o \
 	  env_nand.o env_dataflash.o env_flash.o env_eeprom.o \
 	  env_nvram.o env_nowhere.o \
diff --git a/common/altera.c b/common/altera.c
index ebd50382c6..06e8a95015 100644
--- a/common/altera.c
+++ b/common/altera.c
@@ -50,15 +50,20 @@ int altera_load( Altera_desc *desc, void *buf, size_t bsize )
 {
 	int ret_val = FPGA_FAIL;	/* assume a failure */
 
-	if (!altera_validate (desc, __FUNCTION__)) {
+	if (!altera_validate (desc, (char *)__FUNCTION__)) {
 		printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 	} else {
 		switch (desc->family) {
 		case Altera_ACEX1K:
+		case Altera_CYC2:
 #if (CONFIG_FPGA & CFG_ACEX1K)
 			PRINTF ("%s: Launching the ACEX1K Loader...\n",
 					__FUNCTION__);
 			ret_val = ACEX1K_load (desc, buf, bsize);
+#elif (CONFIG_FPGA & CFG_CYCLON2)
+			PRINTF ("%s: Launching the CYCLON II Loader...\n",
+					__FUNCTION__);
+			ret_val = CYC2_load (desc, buf, bsize);
 #else
 			printf ("%s: No support for ACEX1K devices.\n",
 					__FUNCTION__);
@@ -78,7 +83,7 @@ int altera_dump( Altera_desc *desc, void *buf, size_t bsize )
 {
 	int ret_val = FPGA_FAIL;	/* assume a failure */
 
-	if (!altera_validate (desc, __FUNCTION__)) {
+	if (!altera_validate (desc, (char *)__FUNCTION__)) {
 		printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 	} else {
 		switch (desc->family) {
@@ -106,13 +111,16 @@ int altera_info( Altera_desc *desc )
 {
 	int ret_val = FPGA_FAIL;
 
-	if (altera_validate (desc, __FUNCTION__)) {
+	if (altera_validate (desc, (char *)__FUNCTION__)) {
 		printf ("Family:        \t");
 		switch (desc->family) {
 		case Altera_ACEX1K:
 			printf ("ACEX1K\n");
 			break;
 			/* Add new family types here */
+		case Altera_CYC2:
+			printf ("CYCLON II\n");
+			break;
 		default:
 			printf ("Unknown family type, %d\n", desc->family);
 		}
@@ -147,8 +155,11 @@ int altera_info( Altera_desc *desc )
 			printf ("Device Function Table @ 0x%p\n", desc->iface_fns);
 			switch (desc->family) {
 			case Altera_ACEX1K:
+			case Altera_CYC2:
 #if (CONFIG_FPGA & CFG_ACEX1K)
 				ACEX1K_info (desc);
+#elif (CONFIG_FPGA & CFG_CYCLON2)
+				CYC2_info (desc);
 #else
 				/* just in case */
 				printf ("%s: No support for ACEX1K devices.\n",
@@ -176,7 +187,7 @@ int altera_reloc( Altera_desc *desc, ulong reloc_offset)
 {
 	int ret_val = FPGA_FAIL;	/* assume a failure */
 
-	if (!altera_validate (desc, __FUNCTION__)) {
+	if (!altera_validate (desc, (char *)__FUNCTION__)) {
 		printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 	} else {
 		switch (desc->family) {
@@ -188,6 +199,14 @@ int altera_reloc( Altera_desc *desc, ulong reloc_offset)
 					__FUNCTION__);
 #endif
 			break;
+		case Altera_CYC2:
+#if (CONFIG_FPGA & CFG_CYCLON2)
+			ret_val = CYC2_reloc (desc, reloc_offset);
+#else
+			printf ("%s: No support for CYCLON II devices.\n",
+					__FUNCTION__);
+#endif
+			break;
 			/* Add new family types here */
 		default:
 			printf ("%s: Unsupported family type, %d\n",
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 3091a58897..7aae8a6d1b 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -833,10 +833,6 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 			printf ("ERROR: flat device tree size does not agree with image\n");
 			return;
 		}
-
-	} else if (getenv("disable_of") == NULL) {
-		printf ("ERROR: bootm needs flat device tree as third argument\n");
-		return;
 	}
 #endif
 	if (!data) {
@@ -913,23 +909,11 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 
 	SHOW_BOOT_PROGRESS (15);
 
-#ifndef CONFIG_OF_FLAT_TREE
-
 #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
 	unlock_ram_in_cache();
 #endif
 
-	/*
-	 * Linux Kernel Parameters:
-	 *   r3: ptr to board info data
-	 *   r4: initrd_start or 0 if no initrd
-	 *   r5: initrd_end - unused if r4 is 0
-	 *   r6: Start of command line string
-	 *   r7: End   of command line string
-	 */
-	(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
-
-#else	/* CONFIG_OF_FLAT_TREE */
+#ifdef CONFIG_OF_FLAT_TREE
 	/* move of_flat_tree if needed */
 	if (of_data) {
 		ulong of_start, of_len;
@@ -948,30 +932,36 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 			of_start, of_start + of_len - 1);
 		memmove ((void *)of_start, (void *)of_data, of_len);
 	}
+#endif
 
-	ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
-	/* ft_dump_blob(of_flat_tree); */
-
-#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
-	unlock_ram_in_cache();
+	/*
+	 * Linux Kernel Parameters (passing board info data):
+	 *   r3: ptr to board info data
+	 *   r4: initrd_start or 0 if no initrd
+	 *   r5: initrd_end - unused if r4 is 0
+	 *   r6: Start of command line string
+	 *   r7: End   of command line string
+	 */
+#ifdef CONFIG_OF_FLAT_TREE
+	if (!of_flat_tree)	/* no device tree; boot old style */
 #endif
+		(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+		/* does not return */
+
+#ifdef CONFIG_OF_FLAT_TREE
 	/*
-	 * Linux Kernel Parameters:
+	 * Linux Kernel Parameters (passing device tree):
 	 *   r3: ptr to OF flat tree, followed by the board info data
 	 *   r4: physical pointer to the kernel itself
 	 *   r5: NULL
 	 *   r6: NULL
 	 *   r7: NULL
 	 */
-	if (getenv("disable_of") != NULL)
-		(*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end,
-			cmd_start, cmd_end);
-	else {
-		ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
-		/* ft_dump_blob(of_flat_tree); */
-		(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
-	}
-#endif	/* CONFIG_OF_FLAT_TREE */
+	ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
+	/* ft_dump_blob(of_flat_tree); */
+
+	(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
+#endif
 }
 #endif /* CONFIG_PPC */
 
diff --git a/common/cmd_fpga.c b/common/cmd_fpga.c
index 9a01e7df8b..3444091858 100644
--- a/common/cmd_fpga.c
+++ b/common/cmd_fpga.c
@@ -55,6 +55,7 @@ static int fpga_get_op (char *opstr);
 #define FPGA_LOAD   1
 #define FPGA_LOADB  2
 #define FPGA_DUMP   3
+#define FPGA_LOADMK 4
 
 /* Convert bitstream data and load into the fpga */
 int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
@@ -251,6 +252,23 @@ int do_fpga (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		rc = fpga_loadbitstream(dev, fpga_data, data_size);
 		break;
 
+	case FPGA_LOADMK:
+		{
+			image_header_t header;
+			image_header_t *hdr = &header;
+			ulong	data;
+
+			memmove (&header, (char *)fpga_data, sizeof(image_header_t));
+			if (ntohl(hdr->ih_magic) != IH_MAGIC) {
+				puts ("Bad Magic Number\n");
+				return 1;
+			}
+			data = ((ulong)fpga_data + sizeof(image_header_t));
+			data_size  = ntohl(hdr->ih_size);
+			rc = fpga_load (dev, (void *)data, data_size);
+		}
+		break;
+
 	case FPGA_DUMP:
 		rc = fpga_dump (dev, fpga_data, data_size);
 		break;
@@ -282,6 +300,8 @@ static int fpga_get_op (char *opstr)
 		op = FPGA_LOADB;
 	} else if (!strcmp ("load", opstr)) {
 		op = FPGA_LOAD;
+	} else if (!strcmp ("loadmk", opstr)) {
+		op = FPGA_LOADMK;
 	} else if (!strcmp ("dump", opstr)) {
 		op = FPGA_DUMP;
 	}
@@ -299,5 +319,6 @@ U_BOOT_CMD (fpga, 6, 1, do_fpga,
 	    "\tinfo\tlist known device information\n"
 	    "\tload\tLoad device from memory buffer\n"
 	    "\tloadb\tLoad device from bitstream buffer (Xilinx devices only)\n"
+	    "\tloadmk\tLoad device generated with mkimage\n"
 	    "\tdump\tLoad device to memory buffer\n");
 #endif /* CONFIG_FPGA && CONFIG_COMMANDS & CFG_CMD_FPGA */
diff --git a/common/cyclon2.c b/common/cyclon2.c
new file mode 100644
index 0000000000..dce13b50d0
--- /dev/null
+++ b/common/cyclon2.c
@@ -0,0 +1,305 @@
+/*
+ * (C) Copyright 2006
+ * Heiko Schocher, hs@denx.de
+ * Based on ACE1XK.c
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>		/* core U-Boot definitions */
+#include <altera.h>
+#include <ACEX1K.h>		/* ACEX device family */
+
+#if (CONFIG_FPGA & (CFG_ALTERA | CFG_CYCLON2))
+
+/* Define FPGA_DEBUG to get debug printf's */
+#ifdef	FPGA_DEBUG
+#define PRINTF(fmt,args...)	printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+/* Note: The assumption is that we cannot possibly run fast enough to
+ * overrun the device (the Slave Parallel mode can free run at 50MHz).
+ * If there is a need to operate slower, define CONFIG_FPGA_DELAY in
+ * the board config file to slow things down.
+ */
+#ifndef CONFIG_FPGA_DELAY
+#define CONFIG_FPGA_DELAY()
+#endif
+
+#ifndef CFG_FPGA_WAIT
+#define CFG_FPGA_WAIT CFG_HZ/10		/* 100 ms */
+#endif
+
+static int CYC2_ps_load( Altera_desc *desc, void *buf, size_t bsize );
+static int CYC2_ps_dump( Altera_desc *desc, void *buf, size_t bsize );
+/* static int CYC2_ps_info( Altera_desc *desc ); */
+static int CYC2_ps_reloc( Altera_desc *desc, ulong reloc_offset );
+
+/* ------------------------------------------------------------------------- */
+/* CYCLON2 Generic Implementation */
+int CYC2_load (Altera_desc * desc, void *buf, size_t bsize)
+{
+	int ret_val = FPGA_FAIL;
+
+	switch (desc->iface) {
+	case passive_serial:
+		PRINTF ("%s: Launching Passive Serial Loader\n", __FUNCTION__);
+		ret_val = CYC2_ps_load (desc, buf, bsize);
+		break;
+
+		/* Add new interface types here */
+
+	default:
+		printf ("%s: Unsupported interface type, %d\n",
+				__FUNCTION__, desc->iface);
+	}
+
+	return ret_val;
+}
+
+int CYC2_dump (Altera_desc * desc, void *buf, size_t bsize)
+{
+	int ret_val = FPGA_FAIL;
+
+	switch (desc->iface) {
+	case passive_serial:
+		PRINTF ("%s: Launching Passive Serial Dump\n", __FUNCTION__);
+		ret_val = CYC2_ps_dump (desc, buf, bsize);
+		break;
+
+		/* Add new interface types here */
+
+	default:
+		printf ("%s: Unsupported interface type, %d\n",
+				__FUNCTION__, desc->iface);
+	}
+
+	return ret_val;
+}
+
+int CYC2_info( Altera_desc *desc )
+{
+	return FPGA_SUCCESS;
+}
+
+int CYC2_reloc (Altera_desc * desc, ulong reloc_offset)
+{
+	int ret_val = FPGA_FAIL;	/* assume a failure */
+
+	if (desc->family != Altera_CYC2) {
+		printf ("%s: Unsupported family type, %d\n",
+				__FUNCTION__, desc->family);
+		return FPGA_FAIL;
+	} else
+		switch (desc->iface) {
+		case passive_serial:
+			ret_val = CYC2_ps_reloc (desc, reloc_offset);
+			break;
+
+		/* Add new interface types here */
+
+		default:
+			printf ("%s: Unsupported interface type, %d\n",
+					__FUNCTION__, desc->iface);
+		}
+
+	return ret_val;
+}
+
+/* ------------------------------------------------------------------------- */
+/* CYCLON2 Passive Serial Generic Implementation                                  */
+static int CYC2_ps_load (Altera_desc * desc, void *buf, size_t bsize)
+{
+	int ret_val = FPGA_FAIL;	/* assume the worst */
+	Altera_CYC2_Passive_Serial_fns *fn = desc->iface_fns;
+	int	ret = 0;
+
+	PRINTF ("%s: start with interface functions @ 0x%p\n",
+			__FUNCTION__, fn);
+
+	if (fn) {
+		int cookie = desc->cookie;	/* make a local copy */
+		unsigned long ts;		/* timestamp */
+
+		PRINTF ("%s: Function Table:\n"
+				"ptr:\t0x%p\n"
+				"struct: 0x%p\n"
+				"config:\t0x%p\n"
+				"status:\t0x%p\n"
+				"write:\t0x%p\n"
+				"done:\t0x%p\n\n",
+				__FUNCTION__, &fn, fn, fn->config, fn->status,
+				fn->write, fn->done);
+#ifdef CFG_FPGA_PROG_FEEDBACK
+		printf ("Loading FPGA Device %d...", cookie);
+#endif
+
+		/*
+		 * Run the pre configuration function if there is one.
+		 */
+		if (*fn->pre) {
+			(*fn->pre) (cookie);
+		}
+
+		/* Establish the initial state */
+		(*fn->config) (TRUE, TRUE, cookie);	/* Assert nCONFIG */
+
+		udelay(2);		/* T_cfg > 2us	*/
+
+		/* Wait for nSTATUS to be asserted */
+		ts = get_timer (0);		/* get current time */
+		do {
+			CONFIG_FPGA_DELAY ();
+			if (get_timer (ts) > CFG_FPGA_WAIT) {	/* check the time */
+				puts ("** Timeout waiting for STATUS to go high.\n");
+				(*fn->abort) (cookie);
+				return FPGA_FAIL;
+			}
+		} while (!(*fn->status) (cookie));
+
+		/* Get ready for the burn */
+		CONFIG_FPGA_DELAY ();
+
+		ret = (*fn->write) (buf, bsize, TRUE, cookie);
+		if (ret) {
+			puts ("** Write failed.\n");
+			(*fn->abort) (cookie);
+			return FPGA_FAIL;
+		}
+#ifdef CFG_FPGA_PROG_FEEDBACK
+		puts(" OK? ...");
+#endif
+
+		CONFIG_FPGA_DELAY ();
+
+#ifdef CFG_FPGA_PROG_FEEDBACK
+		putc (' ');			/* terminate the dotted line */
+#endif
+
+	/*
+	 * Checking FPGA's CONF_DONE signal - correctly booted ?
+	 */
+
+	if ( ! (*fn->done) (cookie) ) {
+		puts ("** Booting failed! CONF_DONE is still deasserted.\n");
+		(*fn->abort) (cookie);
+		return (FPGA_FAIL);
+	}
+#ifdef CFG_FPGA_PROG_FEEDBACK
+	puts(" OK\n");
+#endif
+
+	ret_val = FPGA_SUCCESS;
+
+#ifdef CFG_FPGA_PROG_FEEDBACK
+	if (ret_val == FPGA_SUCCESS) {
+		puts ("Done.\n");
+	}
+	else {
+		puts ("Fail.\n");
+	}
+#endif
+	(*fn->post) (cookie);
+
+	} else {
+		printf ("%s: NULL Interface function table!\n", __FUNCTION__);
+	}
+
+	return ret_val;
+}
+
+static int CYC2_ps_dump (Altera_desc * desc, void *buf, size_t bsize)
+{
+	/* Readback is only available through the Slave Parallel and         */
+	/* boundary-scan interfaces.                                         */
+	printf ("%s: Passive Serial Dumping is unavailable\n",
+			__FUNCTION__);
+	return FPGA_FAIL;
+}
+
+static int CYC2_ps_reloc (Altera_desc * desc, ulong reloc_offset)
+{
+	int ret_val = FPGA_FAIL;	/* assume the worst */
+	Altera_CYC2_Passive_Serial_fns *fn_r, *fn =
+			(Altera_CYC2_Passive_Serial_fns *) (desc->iface_fns);
+
+	if (fn) {
+		ulong addr;
+
+		/* Get the relocated table address */
+		addr = (ulong) fn + reloc_offset;
+		fn_r = (Altera_CYC2_Passive_Serial_fns *) addr;
+
+		if (!fn_r->relocated) {
+
+			if (memcmp (fn_r, fn,
+						sizeof (Altera_CYC2_Passive_Serial_fns))
+				== 0) {
+				/* good copy of the table, fix the descriptor pointer */
+				desc->iface_fns = fn_r;
+			} else {
+				PRINTF ("%s: Invalid function table at 0x%p\n",
+						__FUNCTION__, fn_r);
+				return FPGA_FAIL;
+			}
+
+			PRINTF ("%s: Relocating descriptor at 0x%p\n", __FUNCTION__,
+					desc);
+
+			addr = (ulong) (fn->pre) + reloc_offset;
+			fn_r->pre = (Altera_pre_fn) addr;
+
+			addr = (ulong) (fn->config) + reloc_offset;
+			fn_r->config = (Altera_config_fn) addr;
+
+			addr = (ulong) (fn->status) + reloc_offset;
+			fn_r->status = (Altera_status_fn) addr;
+
+			addr = (ulong) (fn->done) + reloc_offset;
+			fn_r->done = (Altera_done_fn) addr;
+
+			addr = (ulong) (fn->write) + reloc_offset;
+			fn_r->write = (Altera_write_fn) addr;
+
+			addr = (ulong) (fn->abort) + reloc_offset;
+			fn_r->abort = (Altera_abort_fn) addr;
+
+			addr = (ulong) (fn->post) + reloc_offset;
+			fn_r->post = (Altera_post_fn) addr;
+
+			fn_r->relocated = TRUE;
+
+		} else {
+			/* this table has already been moved */
+			/* XXX - should check to see if the descriptor is correct */
+			desc->iface_fns = fn_r;
+		}
+
+		ret_val = FPGA_SUCCESS;
+	} else {
+		printf ("%s: NULL Interface function table!\n", __FUNCTION__);
+	}
+
+	return ret_val;
+}
+
+#endif /* (CONFIG_FPGA & (CFG_ALTERA | CFG_CYCLON2)) */
diff --git a/common/fpga.c b/common/fpga.c
index 02d3e42b3b..2eff239c47 100644
--- a/common/fpga.c
+++ b/common/fpga.c
@@ -139,7 +139,7 @@ static int fpga_dev_info( int devnum )
 			printf( "Xilinx Device\nDescriptor @ 0x%p\n", desc );
 			ret_val = xilinx_info( desc->devdesc );
 #else
-			fpga_no_sup( __FUNCTION__, "Xilinx devices" );
+			fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
 #endif
 			break;
 		case fpga_altera:
@@ -178,7 +178,7 @@ int fpga_reloc( fpga_type devtype, void *desc, ulong reloc_off )
 #if CONFIG_FPGA & CFG_FPGA_XILINX
 		ret_val = xilinx_reloc( desc, reloc_off );
 #else
-		fpga_no_sup( __FUNCTION__, "Xilinx devices" );
+		fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
 #endif
 		break;
 	case fpga_altera:
@@ -271,7 +271,7 @@ int fpga_load( int devnum, void *buf, size_t bsize )
 #if CONFIG_FPGA & CFG_FPGA_XILINX
 			ret_val = xilinx_load( desc->devdesc, buf, bsize );
 #else
-			fpga_no_sup( __FUNCTION__, "Xilinx devices" );
+			fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
 #endif
 			break;
 		case fpga_altera:
@@ -304,7 +304,7 @@ int fpga_dump( int devnum, void *buf, size_t bsize )
 #if CONFIG_FPGA & CFG_FPGA_XILINX
 			ret_val = xilinx_dump( desc->devdesc, buf, bsize );
 #else
-			fpga_no_sup( __FUNCTION__, "Xilinx devices" );
+			fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
 #endif
 			break;
 		case fpga_altera:
diff --git a/common/memsize.c b/common/memsize.c
index dbc812dfc5..6c275c9b25 100644
--- a/common/memsize.c
+++ b/common/memsize.c
@@ -21,6 +21,16 @@
  * MA 02111-1307 USA
  */
 
+#include <config.h>
+#ifdef __PPC__
+/*
+ * At least on G2 PowerPC cores, sequential accesses to non-existent
+ * memory must be synchronized.
+ */
+# include <asm/io.h>	/* for sync() */
+#else
+# define sync()		/* nothing */
+#endif
 
 /*
  * Check memory range for valid RAM. A simple memory test determines
@@ -38,20 +48,27 @@ long get_ram_size(volatile long *base, long maxsize)
 
 	for (cnt = (maxsize / sizeof (long)) >> 1; cnt > 0; cnt >>= 1) {
 		addr = base + cnt;	/* pointer arith! */
+		sync ();
 		save[i++] = *addr;
+		sync ();
 		*addr = ~cnt;
 	}
 
 	addr = base;
+	sync ();
 	save[i] = *addr;
+	sync ();
 	*addr = 0;
 
+	sync ();
 	if ((val = *addr) != 0) {
 		/* Restore the original data before leaving the function.
 		 */
+		sync ();
 		*addr = save[i];
 		for (cnt = 1; cnt < maxsize / sizeof(long); cnt <<= 1) {
 			addr  = base + cnt;
+			sync ();
 			*addr = save[--i];
 		}
 		return (0);