diff --git a/Makefile b/Makefile
index aea1ae8..d87cde2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
-OBJS = jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o m29f400bt.o \
-	w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o
+OBJS = flash_enable.o udelay.o jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o \
+	m29f400bt.o w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o
 CC = gcc -O2 -g -Wall -Werror
 
 all: flash_rom flash_on
@@ -28,5 +28,6 @@
 sst49lf040.o: sst49lf040.c sst49lf040.h jedec.h flash.h
 w49f002u.o:   w49f002u.c   w49f002u.h   jedec.h flash.h
 pm49fl004.o:   pm49fl004.c   pm49fl004.h   jedec.h flash.h
-
+flash_enable.o: flash_enable.c
+udelay.o:	udelay.c
 jedec.o:      jedec.c                   jedec.h flash.h
diff --git a/flash.h b/flash.h
index f4a3d22..6cf911e 100644
--- a/flash.h
+++ b/flash.h
@@ -55,5 +55,6 @@
 #define MSYSTEMS_MD2802   0x30 /* hmm -- both 0x30 */
 
 extern void myusec_delay(int time);
-
+extern void myusec_calibrate_delay();
+extern int enable_flash_write(void);
 #endif /* !__FLASH_H__ */
diff --git a/flash_enable.c b/flash_enable.c
new file mode 100644
index 0000000..8a9bf04
--- /dev/null
+++ b/flash_enable.c
@@ -0,0 +1,278 @@
+#include <sys/io.h>
+#include <stdio.h>
+#include <pci/pci.h>
+#include <stdlib.h>
+
+static int enable_flash_sis630 (struct pci_dev *dev, char *name)
+{
+	char b;
+
+	/* get io privilege access PCI configuration space */
+	if (iopl(3) != 0) {
+		perror("Can not set io priviliage");
+		exit(1);
+	}
+
+	/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
+	outl(0x80000840, 0x0cf8);
+	b = inb(0x0cfc) | 0x0b;
+	outb(b, 0xcfc);
+	/* Flash write enable on SiS 540/630 */
+	outl(0x80000845, 0x0cf8);
+	b = inb(0x0cfd) | 0x40;
+	outb(b, 0xcfd);
+
+	/* The same thing on SiS 950 SuperIO side */
+	outb(0x87, 0x2e);
+	outb(0x01, 0x2e);
+	outb(0x55, 0x2e);
+	outb(0x55, 0x2e);
+
+	if (inb(0x2f) != 0x87) {
+		outb(0x87, 0x4e);
+		outb(0x01, 0x4e);
+		outb(0x55, 0x4e);
+		outb(0xaa, 0x4e);
+		if (inb(0x4f) != 0x87) {
+			printf("Can not access SiS 950\n");
+			return -1;
+		}
+		outb(0x24, 0x4e);
+		b = inb(0x4f) | 0xfc;
+		outb(0x24, 0x4e);
+		outb(b, 0x4f);
+		outb(0x02, 0x4e);
+		outb(0x02, 0x4f);	
+	}
+
+	outb(0x24, 0x2e);
+	printf("2f is %#x\n", inb(0x2f));
+	b = inb(0x2f) | 0xfc;
+	outb(0x24, 0x2e);
+	outb(b, 0x2f);
+
+	outb(0x02, 0x2e);
+	outb(0x02, 0x2f);
+
+	return 0;
+}
+
+static int enable_flash_e7500(struct pci_dev *dev, char *name)
+{
+	/* register 4e.b gets or'ed with one */
+	unsigned char old, new;
+	/* if it fails, it fails. There are so many variations of broken mobos
+	 * that it is hard to argue that we should quit at this point. 
+	 */
+  
+	old = pci_read_byte(dev, 0x4e);
+
+	new = old | 1;
+
+	if (new == old)
+		return 0;
+
+	pci_write_byte(dev, 0x4e, new);
+
+	if (pci_read_byte(dev, 0x4e) != new) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x4e, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_vt8235(struct pci_dev *dev, char *name)
+{
+	unsigned char old, new, val;
+	unsigned int base;
+	int ok;
+  
+	/* get io privilege access PCI configuration space */
+	if (iopl(3) != 0) {
+		perror("Can not set io priviliage");
+		exit(1);
+	}
+
+	old = pci_read_byte(dev, 0x40);
+
+	new = old | 0x10;
+
+	if (new == old)
+		return 0;
+
+	ok = pci_write_byte(dev, 0x40, new);
+	if (ok != 0) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       old, new, name);
+	}
+
+	/* enable GPIO15 which is connected to write protect. */
+	base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8);
+	val = inb(base + 0x4d);
+	val |= 0x80;
+	outb(val, base + 0x4d);
+
+	if (ok != 0) {
+		return -1;
+	} else {
+		return 0;
+	}
+}
+
+static int enable_flash_vt8231(struct pci_dev *dev, char *name)
+{
+	unsigned char val;
+  
+	val = pci_read_byte(dev, 0x40);
+	val |= 0x10;
+	pci_write_byte(dev, 0x40, val);
+
+	if (pci_read_byte(dev, 0x40) != val) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x40, val, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_cs5530(struct pci_dev *dev, char *name)
+{
+	unsigned char new;
+  
+	pci_write_byte(dev, 0x52, 0xee);
+
+	new = pci_read_byte(dev, 0x52);
+
+	if (new != 0xee) {
+		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x52, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_sc1100(struct pci_dev *dev, char *name)
+{
+	unsigned char new;
+  
+	pci_write_byte(dev, 0x52, 0xee);
+
+	new = pci_read_byte(dev, 0x52);
+
+	if (new != 0xee) {
+		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x52, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_sis5595(struct pci_dev *dev, char *name)
+{
+	unsigned char new, newer;
+  
+	new = pci_read_byte(dev, 0x45);
+
+	/* clear bit 5 */
+	new &= (~ 0x20);
+	/* set bit 2 */
+	new |= 0x4;
+
+	pci_write_byte(dev, 0x45, new);
+
+	newer = pci_read_byte(dev, 0x45);
+	if (newer != new) {
+		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
+		       0x45, new, name);
+		printf("Stuck at 0x%x\n", newer);
+		return -1;
+	}
+	return 0;
+}
+
+static int enable_flash_amd8111(struct pci_dev *dev, char *name) {
+	/* register 4e.b gets or'ed with one */
+	unsigned char old, new;
+	/* if it fails, it fails. There are so many variations of broken mobos
+	 * that it is hard to argue that we should quit at this point. 
+	 */
+
+	//dump_pci_device(dev); 
+
+	old = pci_read_byte(dev, 0x43);
+	new = old | 0x80;
+	if (new != old) {
+		pci_write_byte(dev, 0x43, new);
+		if (pci_read_byte(dev, 0x43) != new) {
+			printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+			       0x43, new, name);
+		}
+	}
+
+	old = pci_read_byte(dev, 0x40);  
+	new = old | 0x01;
+	if (new == old)
+		return 0;
+	pci_write_byte(dev, 0x40, new);
+
+	if (pci_read_byte(dev, 0x40) != new) {
+		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+		       0x40, new, name);
+		return -1;
+	}
+	return 0;
+}
+
+typedef struct penable {
+	unsigned short vendor, device; 
+	char *name;
+	int (*doit)(struct pci_dev *dev, char *name);
+} FLASH_ENABLE;
+
+static FLASH_ENABLE enables[] = {
+	{0x1039, 0x0630, "sis630",  enable_flash_sis630},
+	{0x8086, 0x2480, "E7500",   enable_flash_e7500},
+	{0x1106, 0x8231, "VT8231",  enable_flash_vt8231},
+	{0x1106, 0x3177, "VT8235",  enable_flash_vt8235},
+	{0x1078, 0x0100, "CS5530",  enable_flash_cs5530},
+	{0x100b, 0x0510, "SC1100",  enable_flash_sc1100},
+	{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
+	{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
+};
+  
+int enable_flash_write()
+{
+	int i;
+	struct pci_access *pacc;
+	struct pci_dev *dev = 0;
+	FLASH_ENABLE *enable = 0;
+
+	pacc = pci_alloc();           /* Get the pci_access structure */
+	/* Set all options you want -- here we stick with the defaults */
+	pci_init(pacc);               /* Initialize the PCI library */
+	pci_scan_bus(pacc);           /* We want to get the list of devices */
+
+	/* now let's try to find the chipset we have ... */
+	for (i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) {
+		struct pci_filter f;
+		struct pci_dev *z;
+		/* the first param is unused. */
+		pci_filter_init((struct pci_access *) 0, &f);
+		f.vendor = enables[i].vendor;
+		f.device = enables[i].device;
+		for (z=pacc->devices; z; z=z->next)
+			if (pci_filter_match(&f, z)) {
+				enable = &enables[i];
+				dev = z;
+			}
+	}
+
+	/* now do the deed. */
+	if (enable) {
+		printf("Enabling flash write on %s...", enable->name);
+		if (enable->doit(dev, enable->name) == 0)
+			printf("OK\n");
+	}
+	return 0;
+}
diff --git a/flash_rom.c b/flash_rom.c
index b476d35..9274291 100644
--- a/flash_rom.c
+++ b/flash_rom.c
@@ -29,11 +29,8 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/mman.h>
-#include <sys/io.h>
-#include <sys/time.h>
 #include <unistd.h>
 #include <stdio.h>
-#include <pci/pci.h>
 #include <string.h>
 #include <stdlib.h>
 
@@ -51,574 +48,216 @@
 #include "mx29f002.h"
 
 struct flashchip flashchips[] = {
-#if  1
-   {"Am29F040B",   AMD_ID,     AM_29F040B,   NULL, 512, 64*1024,
-     probe_29f040b, erase_29f040b, write_29f040b, NULL},
-    {"At29C040A",   ATMEL_ID,   AT_29C040A,   NULL, 512, 256,
-     probe_jedec,   erase_jedec,   write_jedec, NULL},
-    {"Mx29f002",    MX_ID,      MX_29F002,    NULL, 256, 64*1024,
-     probe_29f002,  erase_29f002,  write_29f002, NULL},
-    {"SST29EE020A", SST_ID,     SST_29EE020A, NULL, 256, 128,
-     probe_jedec,   erase_jedec,   write_jedec, NULL},
-    {"SST28SF040A", SST_ID,     SST_28SF040,  NULL, 512, 256,
-     probe_28sf040, erase_28sf040, write_28sf040, NULL},
-    {"SST39SF020A", SST_ID,     SST_39SF020,  NULL, 256, 4096,
-     probe_39sf020, erase_39sf020, write_39sf020, NULL},
-    {"SST39VF020",  SST_ID,     SST_39VF020,  NULL, 256, 4096,
-     probe_39sf020, erase_39sf020, write_39sf020, NULL},
-    {"SST49LF040",  SST_ID,	SST_49LF040,  NULL, 512, 4096,
-     probe_49lf040, erase_49lf040, write_49lf040, NULL},
-
-#endif
-//By LYH begin
-    {"Pm49FL004",  PMC_ID,     PMC_49FL004,  NULL, 512, 64*1024,
-     probe_49fl004, erase_49fl004, write_49fl004, NULL},
-//END
-#if 1
-    {"W29C011",    WINBOND_ID, W_29C011,    NULL, 128, 128,
-     probe_jedec,   erase_jedec,   write_jedec, NULL},
-    {"W29C020C",    WINBOND_ID, W_29C020C,    NULL, 256, 128,
-     probe_jedec,   erase_jedec,   write_jedec, NULL},
-    {"W49F002U",    WINBOND_ID, W_49F002U,    NULL, 256, 128,
-     probe_49f002,   erase_49f002,   write_49f002, NULL},
-    {"M29F400BT",   ST_ID, ST_M29F400BT ,    NULL, 512, 64*1024,
-     probe_m29f400bt,   erase_m29f400bt,   write_linuxbios_m29f400bt, NULL},
-    {"82802ab",   137, 173 ,    NULL, 512, 64*1024,
-     probe_82802ab,   erase_82802ab,   write_82802ab, NULL},
-    {"82802ac",   137, 172 ,    NULL, 1024, 64*1024,
-     probe_82802ab,   erase_82802ab,   write_82802ab, NULL},
-    {"MD-2802 (M-Systems DiskOnChip Millennium Module)",
-     MSYSTEMS_ID, MSYSTEMS_MD2802,
-     NULL, 8, 8*1024,
-     probe_md2802, erase_md2802, write_md2802, read_md2802},
-    {NULL,}
-#endif
+	{"Am29F040B",   AMD_ID,     AM_29F040B,   NULL, 512, 64*1024,
+	 probe_29f040b, erase_29f040b, write_29f040b, NULL},
+	{"At29C040A",   ATMEL_ID,   AT_29C040A,   NULL, 512, 256,
+	 probe_jedec,   erase_jedec,   write_jedec, NULL},
+	{"Mx29f002",    MX_ID,      MX_29F002,    NULL, 256, 64*1024,
+	 probe_29f002,  erase_29f002,  write_29f002, NULL},
+	{"SST29EE020A", SST_ID,     SST_29EE020A, NULL, 256, 128,
+	 probe_jedec,   erase_jedec,   write_jedec, NULL},
+	{"SST28SF040A", SST_ID,     SST_28SF040,  NULL, 512, 256,
+	 probe_28sf040, erase_28sf040, write_28sf040, NULL},
+	{"SST39SF020A", SST_ID,     SST_39SF020,  NULL, 256, 4096,
+	 probe_39sf020, erase_39sf020, write_39sf020, NULL},
+	{"SST39VF020",  SST_ID,     SST_39VF020,  NULL, 256, 4096,
+	 probe_39sf020, erase_39sf020, write_39sf020, NULL},
+	{"SST49LF040",  SST_ID,	SST_49LF040,  NULL, 512, 4096,
+	 probe_49lf040, erase_49lf040, write_49lf040, NULL},
+	//By LYH begin
+	{"Pm49FL004",   PMC_ID,     PMC_49FL004,  NULL, 512, 64*1024,
+	 probe_49fl004, erase_49fl004, write_49fl004, NULL},
+	//END
+	{"W29C011",     WINBOND_ID, W_29C011,    NULL, 128, 128,
+	 probe_jedec,   erase_jedec,   write_jedec, NULL},
+	{"W29C020C",    WINBOND_ID, W_29C020C,    NULL, 256, 128,
+	 probe_jedec,   erase_jedec,   write_jedec, NULL},
+	{"W49F002U",    WINBOND_ID, W_49F002U,    NULL, 256, 128,
+	 probe_49f002,  erase_49f002,   write_49f002, NULL},
+	{"M29F400BT",   ST_ID, ST_M29F400BT ,    NULL, 512, 64*1024,
+	 probe_m29f400bt,   erase_m29f400bt,   write_linuxbios_m29f400bt, NULL},
+	{"82802ab",     137,   173 ,    NULL, 512, 64*1024,
+	 probe_82802ab, erase_82802ab,   write_82802ab, NULL},
+	{"82802ac",     137,   172 ,    NULL, 1024, 64*1024,
+	 probe_82802ab, erase_82802ab,   write_82802ab, NULL},
+	{"MD-2802 (M-Systems DiskOnChip Millennium Module)",
+	 MSYSTEMS_ID, MSYSTEMS_MD2802,
+	 NULL, 8, 8*1024,
+	 probe_md2802, erase_md2802, write_md2802, read_md2802},
+	{NULL,}
 };
 
 char *chip_to_probe = NULL;
-#if 1
-int enable_flash_sis630 (struct pci_dev *dev, char *name)
-{
-    char b;
-
-    /* get io privilege access PCI configuration space */
-    if (iopl(3) != 0) {
-    	perror("Can not set io priviliage");
-        exit(1);
-    }
-
-    /* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
-    outl(0x80000840, 0x0cf8);
-    b = inb(0x0cfc) | 0x0b;
-    outb(b, 0xcfc);
-    /* Flash write enable on SiS 540/630 */
-    outl(0x80000845, 0x0cf8);
-    b = inb(0x0cfd) | 0x40;
-    outb(b, 0xcfd);
-
-    /* The same thing on SiS 950 SuperIO side */
-    outb(0x87, 0x2e);
-    outb(0x01, 0x2e);
-    outb(0x55, 0x2e);
-    outb(0x55, 0x2e);
-
-    if (inb(0x2f) != 0x87) {
-	outb(0x87, 0x4e);
-    	outb(0x01, 0x4e);
-    	outb(0x55, 0x4e);
-    	outb(0xaa, 0x4e);
-	if (inb(0x4f) != 0x87) {
-	    printf("Can not access SiS 950\n");
-	    return -1;
-	}
-	outb(0x24, 0x4e);
-	b = inb(0x4f) | 0xfc;
-	outb(0x24, 0x4e);
-	outb(b, 0x4f);
-	outb(0x02, 0x4e);
-	outb(0x02, 0x4f);	
-    }
-
-    outb(0x24, 0x2e);
-    printf("2f is %#x\n", inb(0x2f));
-    b = inb(0x2f) | 0xfc;
-    outb(0x24, 0x2e);
-    outb(b, 0x2f);
-
-    outb(0x02, 0x2e);
-    outb(0x02, 0x2f);
-
-    return 0;
-}
-
-int
-enable_flash_e7500(struct pci_dev *dev, char *name) {
-  /* register 4e.b gets or'ed with one */
-  unsigned char old, new;
-  /* if it fails, it fails. There are so many variations of broken mobos
-   * that it is hard to argue that we should quit at this point. 
-   */
-  
-  old = pci_read_byte(dev, 0x4e);
-
-  new = old | 1;
-
-  if (new == old)
-      return 0;
-
-  pci_write_byte(dev, 0x4e, new);
-
-  if (pci_read_byte(dev, 0x4e) != new) {
-    printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
-	   0x4e, new, name);
-    return -1;
-  }
-  return 0;
-}
-
-int
-enable_flash_vt8235(struct pci_dev *dev, char *name) {
-  unsigned char old, new, val;
-  unsigned int base;
-  int ok;
-  
-  /* get io privilege access PCI configuration space */
-  if (iopl(3) != 0) {
-      perror("Can not set io priviliage");
-      exit(1);
-  }
-
-  old = pci_read_byte(dev, 0x40);
-
-  new = old | 0x10;
-
-  if (new == old)
-      return 0;
-
-  ok = pci_write_byte(dev, 0x40, new);
-  if (ok != 0) {
-    printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
-	   old, new, name);
-  }
-
-  /* enable GPIO15 which is connected to write protect. */
-  base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8);
-  val = inb(base + 0x4d);
-  val |= 0x80;
-  outb(val, base + 0x4d);
-
-  if (ok != 0) {
-    return -1;
-  } else {
-    return 0;
-  }
-}
-
-int
-enable_flash_vt8231(struct pci_dev *dev, char *name) {
-  unsigned char val;
-  
-  val = pci_read_byte(dev, 0x40);
-  val |= 0x10;
-  pci_write_byte(dev, 0x40, val);
-
-  if (pci_read_byte(dev, 0x40) != val) {
-    printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
-	   0x40, val, name);
-    return -1;
-  }
-  return 0;
-}
-
-int
-enable_flash_cs5530(struct pci_dev *dev, char *name) {
-  unsigned char new;
-  
-  pci_write_byte(dev, 0x52, 0xee);
-
-  new = pci_read_byte(dev, 0x52);
-
-  if (new != 0xee) {
-    printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
-	   0x52, new, name);
-    return -1;
-  }
-  return 0;
-}
-
-int
-enable_flash_sc1100(struct pci_dev *dev, char *name) {
-  unsigned char new;
-  
-  pci_write_byte(dev, 0x52, 0xee);
-
-  new = pci_read_byte(dev, 0x52);
-
-  if (new != 0xee) {
-    printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
-	   0x52, new, name);
-    return -1;
-  }
-  return 0;
-}
-
-int
-enable_flash_sis5595(struct pci_dev *dev, char *name) {
-  unsigned char new, newer;
-  
-  new = pci_read_byte(dev, 0x45);
-
-  /* clear bit 5 */
-  new &= (~ 0x20);
-  /* set bit 2 */
-  new |= 0x4;
-
-  pci_write_byte(dev, 0x45, new);
-
-  newer = pci_read_byte(dev, 0x45);
-  if (newer != new) {
-    printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 
-	   0x45, new, name);
-    printf("Stuck at 0x%x\n", newer);
-    return -1;
-  }
-  return 0;
-}
-#endif
-//BY LYH
-#if 0
-static void dump_pci_device(struct pci_dev *dev)
-{
-        int i;
-
-	printf("\n");
-        for(i = 0; i <= 255; i++) {
-                unsigned char val;
-                if ((i & 0x0f) == 0) {
-                        printf("0x%02x:",i);
-                }
-                val = pci_read_byte(dev, i);
-		printf(" 0x%02x",val);
-                if ((i & 0x0f) == 0x0f) {
-                        printf("\r\n");
-                }
-        }
-}
-
-#endif
-
-int
-enable_flash_amd8111(struct pci_dev *dev, char *name) {
-  /* register 4e.b gets or'ed with one */
-  unsigned char old, new;
-  /* if it fails, it fails. There are so many variations of broken mobos
-   * that it is hard to argue that we should quit at this point. 
-   */
-
-//  dump_pci_device(dev); 
- 
-  old = pci_read_byte(dev, 0x43);
-
-  new = old | 0x80;
-
-  if (new != old) {
-
-  	pci_write_byte(dev, 0x43, new);
-
-  	if (pci_read_byte(dev, 0x43) != new) {
-    		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
-          	 0x43, new, name);
-  	}
-  }
-
-	
-  old = pci_read_byte(dev, 0x40);
-  
-  new = old | 0x01;
-  
-  if (new == old)
-      return 0;
-      
-  pci_write_byte(dev, 0x40, new);
-  
-  if (pci_read_byte(dev, 0x40) != new) {
-    printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
-           0x40, new, name);
-    return -1;
-  }
-  return 0;
-}
-//By LYH END
 
 struct flashchip * probe_flash(struct flashchip * flash)
 {
-    int fd_mem;
-    volatile char * bios;
-    unsigned long size;
+	int fd_mem;
+	volatile char * bios;
+	unsigned long size;
 
-    if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
-	perror("Can not open /dev/mem");
-	exit(1);
-    }
+	if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
+		perror("Can not open /dev/mem");
+		exit(1);
+	}
 
-    while (flash->name != NULL) {
-	if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) {
-	    flash++;
-	    continue;
-	}
-	printf("Trying %s, %d KB\n", flash->name, flash->total_size);
-	size = flash->total_size * 1024;
-/* BUG? what happens if getpagesize() > size!?
-   -> ``Error MMAP /dev/mem: Invalid argument'' NIKI */
-	if(getpagesize() > size)
-	{
-		size = getpagesize();
-		printf("%s: warning: size: %d -> %ld\n", __FUNCTION__,
-	 		flash->total_size * 1024, (unsigned long)size);
-	}
-	bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
-		     //fd_mem, (off_t) (0x100000000-size));
-		     fd_mem, (off_t) (0x0-size));
-	if (bios == MAP_FAILED) {
-	    perror("Error MMAP /dev/mem");
-	    exit(1);
-	}
-	flash->virt_addr = bios;
-        flash->fd_mem = fd_mem;
+	while (flash->name != NULL) {
+		if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) {
+			flash++;
+			continue;
+		}
+		printf("Trying %s, %d KB\n", flash->name, flash->total_size);
+		size = flash->total_size * 1024;
+		/* BUG? what happens if getpagesize() > size!?
+		   -> ``Error MMAP /dev/mem: Invalid argument'' NIKI */
+		if (getpagesize() > size) {
+			size = getpagesize();
+			printf("%s: warning: size: %d -> %ld\n", __FUNCTION__,
+			       flash->total_size * 1024, (unsigned long)size);
+		}
+		bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+			     //fd_mem, (off_t) (0x100000000-size));
+			     fd_mem, (off_t) (0x0-size));
+		if (bios == MAP_FAILED) {
+			perror("Error MMAP /dev/mem");
+			exit(1);
+		}
+		flash->virt_addr = bios;
+		flash->fd_mem = fd_mem;
 
-	if (flash->probe(flash) == 1) {
-	    printf ("%s found at physical address: 0x%lx\n",
-		    flash->name, (0 - size));
-	    return flash;
+		if (flash->probe(flash) == 1) {
+			printf ("%s found at physical address: 0x%lx\n",
+				flash->name, (0 - size));
+			return flash;
+		}
+		munmap ((void *) bios, size);
+		flash++;
 	}
-	munmap ((void *) bios, size);
-	flash++;
-    }
-    return NULL;
+	return NULL;
 }
 
 int verify_flash (struct flashchip * flash, char * buf, int verbose)
 {
-    int i = 0;
-    int total_size = flash->total_size *1024;
-    volatile char * bios = flash->virt_addr;
+	int i = 0;
+	int total_size = flash->total_size *1024;
+	volatile char * bios = flash->virt_addr;
 
-    printf("Verifying address: ");
-    while (i++ < total_size) {
-	if (verbose) 
-		printf("0x%08x", i);
-	if (*(bios+i) != *(buf+i)) {
-		printf("FAILED\n");
-	    return 0;
+	printf("Verifying address: ");
+	while (i++ < total_size) {
+		if (verbose) 
+			printf("0x%08x", i);
+		if (*(bios+i) != *(buf+i)) {
+			printf("FAILED\n");
+			return 0;
+		}
+		if (verbose) 
+			printf("\b\b\b\b\b\b\b\b\b\b");
 	}
-	if (verbose) 
-		printf("\b\b\b\b\b\b\b\b\b\b");
-    }
-    if (verbose)
-    	printf("\n");
-    else
-	printf("VERIFIED\n");
-    return 1;
+	if (verbose)
+		printf("\n");
+	else
+		printf("VERIFIED\n");
+	return 1;
 }
 
-// count to a billion. Time it. If it's < 1 sec, count to 10B, etc.
-
-unsigned long micro = 1;
-
-void 
-myusec_calibrate_delay()
-{
-        int count = 1000;
-	unsigned long timeusec;
-	struct timeval start, end;
-	int ok = 0;
-	void myusec_delay(int time);
-
-	printf("Setting up microsecond timing loop\n");
-	while (! ok) {
-		//fprintf(stderr, "Try %d\n", count);
-		gettimeofday(&start, 0);
-                myusec_delay(count);
-		gettimeofday(&end, 0);
-		timeusec = 1000000 * (end.tv_sec - start.tv_sec ) + 
-				(end.tv_usec - start.tv_usec);
-		//fprintf(stderr, "timeusec is %d\n", timeusec);
-		count *= 2;
-		if (timeusec < 1000000/4)
-			continue;
-		ok = 1;
-	}
-
-	// compute one microsecond. That will be count / time
-	micro = count / timeusec;
-
-	fprintf(stderr, "%ldM loops per second\n", (unsigned long)micro);
-
-
-}
-
-void
-myusec_delay(int time)
-{
-  volatile unsigned long i;
-  for(i = 0; i < time * micro; i++)
-	;
-}
-
-typedef struct penable {
-  unsigned short vendor, device; 
-  char *name;
-  int (*doit)(struct pci_dev *dev, char *name);
-} FLASH_ENABLE;
-
-FLASH_ENABLE enables[] = {
-#if 1
-  {0x1, 0x1, "sis630 -- what's the ID?", enable_flash_sis630},
-  {0x8086, 0x2480, "E7500", enable_flash_e7500},
-  {0x1106, 0x8231, "VT8231", enable_flash_vt8231},
-  {0x1106, 0x3177, "VT8235", enable_flash_vt8235},
-  {0x1078, 0x0100, "CS5530", enable_flash_cs5530},
-  {0x100b, 0x0510, "SC1100", enable_flash_sc1100},
-  {0x1039, 0x8, "SIS5595", enable_flash_sis5595},
-#endif
-  {0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
-};
-  
-int
-enable_flash_write() {
-  int i;
-  struct pci_access *pacc;
-  struct pci_dev *dev = 0;
-  FLASH_ENABLE *enable = 0;
-
-  pacc = pci_alloc();           /* Get the pci_access structure */
-  /* Set all options you want -- here we stick with the defaults */
-  pci_init(pacc);               /* Initialize the PCI library */
-  pci_scan_bus(pacc);           /* We want to get the list of devices */
-
-  /* now let's try to find the chipset we have ... */
-  for(i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) {
-    struct pci_filter f;
-    struct pci_dev *z;
-    /* the first param is unused. */
-    pci_filter_init((struct pci_access *) 0, &f);
-    f.vendor = enables[i].vendor;
-    f.device = enables[i].device;
-    for(z=pacc->devices; z; z=z->next)
-      if (pci_filter_match(&f, z)) {
-	enable = &enables[i];
-	dev = z;
-      }
-  }
-
-  /* now do the deed. */
-  if (enable) {
-      printf("Enabling flash write on %s...", enable->name);
-      if (enable->doit(dev, enable->name) == 0)
-          printf("OK\n");
-  }
-  return 0;
-}
 
 void usage(const char *name)
 {
-    printf("usage: %s [-rwv] [-c chipname][file]\n", name);
-    printf("-r: read flash and save into file\n"
-        "-w: write file into flash (default when file is specified)\n"
-        "-v: verify flash against file\n"
-        "-c: probe only for specified flash chip\n"
-        " If no file is specified, then all that happens\n"
-        " is that flash info is dumped\n");
-    exit(1);
+	printf("usage: %s [-rwv] [-c chipname][file]\n", name);
+	printf("-r: read flash and save into file\n"
+	       "-w: write file into flash (default when file is specified)\n"
+	       "-v: verify flash against file\n"
+	       "-c: probe only for specified flash chip\n"
+	       " If no file is specified, then all that happens\n"
+	       " is that flash info is dumped\n");
+	exit(1);
 }
 
-int
-main (int argc, char * argv[])
+int main (int argc, char * argv[])
 {
-    char * buf;
-    unsigned long size;
-    FILE * image;
-    struct flashchip * flash;
-    int opt;
-    int read_it = 0, write_it = 0, verify_it = 0;
-    char *filename = NULL;
+	char * buf;
+	unsigned long size;
+	FILE * image;
+	struct flashchip * flash;
+	int opt;
+	int read_it = 0, write_it = 0, verify_it = 0;
+	char *filename = NULL;
 
-    setbuf(stdout, NULL);
+	setbuf(stdout, NULL);
 
-    while ((opt = getopt(argc, argv, "rwvc:")) != EOF) {
-        switch (opt) {
-        case 'r':
-            read_it = 1;
-            break;
-        case 'w':
-            write_it = 1;
-            break;
-        case 'v':
-            verify_it = 1;
-            break;
-        case 'c':
-            chip_to_probe = strdup(optarg);
-            break;
-        default:
-            usage(argv[0]);
-            break;
-        }
-    }
-    if (read_it && write_it) {
-        printf("-r and -w are mutually exclusive\n");
-        usage(argv[0]);
-    }
+	while ((opt = getopt(argc, argv, "rwvc:")) != EOF) {
+		switch (opt) {
+		case 'r':
+			read_it = 1;
+			break;
+		case 'w':
+			write_it = 1;
+			break;
+		case 'v':
+			verify_it = 1;
+			break;
+		case 'c':
+			chip_to_probe = strdup(optarg);
+			break;
+		default:
+			usage(argv[0]);
+			break;
+		}
+	}
+	if (read_it && write_it) {
+		printf("-r and -w are mutually exclusive\n");
+		usage(argv[0]);
+	}
 
-    if (optind < argc)
-        filename = argv[optind++];
+	if (optind < argc)
+		filename = argv[optind++];
 
-    printf("Calibrating timer since microsleep sucks ... takes a second\n");
-    myusec_calibrate_delay();
-    printf("OK, calibrated, now do the deed\n");
+	printf("Calibrating timer since microsleep sucks ... takes a second\n");
+	myusec_calibrate_delay();
+	printf("OK, calibrated, now do the deed\n");
 
-    /* try to enable it. Failure IS an option, since not all motherboards
-     * really need this to be done, etc., etc. It sucks.
-     */
-    (void) enable_flash_write();
+	/* try to enable it. Failure IS an option, since not all motherboards
+	 * really need this to be done, etc., etc. It sucks.
+	 */
+	(void) enable_flash_write();
     
-    if ((flash = probe_flash (flashchips)) == NULL) {
-	printf("EEPROM not found\n");
-	exit(1);
-    }
+	if ((flash = probe_flash (flashchips)) == NULL) {
+		printf("EEPROM not found\n");
+		exit(1);
+	}
 
-    printf("Part is %s\n", flash->name);
-    if (!filename){
-	printf("OK, only ENABLING flash write, but NOT FLASHING\n");
+	printf("Part is %s\n", flash->name);
+	if (!filename){
+		printf("OK, only ENABLING flash write, but NOT FLASHING\n");
+		return 0;
+	}
+	size = flash->total_size * 1024;
+	buf = (char *) calloc (size, sizeof(char));
+
+	if (read_it) {
+		if ((image = fopen (filename, "w")) == NULL) {
+			perror(filename);
+			exit(1);
+		}
+		printf("Reading Flash...");
+		if(flash->read == NULL)
+			memcpy(buf, (const char *) flash->virt_addr, size);
+		else
+			flash->read (flash, buf);
+		fwrite(buf, sizeof(char), size, image);
+		fclose(image);
+		printf("done\n");
+	} else {
+		if ((image = fopen (filename, "r")) == NULL) {
+			perror(filename);
+			exit(1);
+		}
+		fread (buf, sizeof(char), size, image);
+		fclose(image);
+	}
+
+	if (write_it || (!read_it && !verify_it))
+		flash->write (flash, buf);
+	if (verify_it)
+		verify_flash (flash, buf, /* verbose = */ 0);
 	return 0;
-    }
-    size = flash->total_size * 1024;
-    buf = (char *) calloc (size, sizeof(char));
-
-    if (read_it) {
-        if ((image = fopen (filename, "w")) == NULL) {
-            perror(filename);
-            exit(1);
-        }
-        printf("Reading Flash...");
-	if(flash->read == NULL)
-		memcpy(buf, (const char *) flash->virt_addr, size);
-	else
-		flash->read (flash, buf);
-        fwrite(buf, sizeof(char), size, image);
-        fclose(image);
-        printf("done\n");
-    } else {
-        if ((image = fopen (filename, "r")) == NULL) {
-            perror(filename);
-            exit(1);
-        }
-        fread (buf, sizeof(char), size, image);
-        fclose(image);
-    }
-
-    if (write_it || (!read_it && !verify_it))
-        flash->write (flash, buf);
-    if (verify_it)
-        verify_flash (flash, buf, /* verbose = */ 0);
-    return 0;
 }
diff --git a/sst39sf020.c b/sst39sf020.c
index 65fc623..fa35276 100644
--- a/sst39sf020.c
+++ b/sst39sf020.c
@@ -32,7 +32,7 @@
 
 #define AUTO_PG_ERASE1		0x20
 #define AUTO_PG_ERASE2		0xD0
-#define AUTO_PGRM			0x10
+#define AUTO_PGRM		0x10
 #define CHIP_ERASE		0x30
 #define RESET			0xFF
 #define READ_ID			0x90
diff --git a/udelay.c b/udelay.c
new file mode 100644
index 0000000..9674bbe
--- /dev/null
+++ b/udelay.c
@@ -0,0 +1,43 @@
+#include <sys/time.h>
+#include <stdio.h>
+
+// count to a billion. Time it. If it's < 1 sec, count to 10B, etc.
+unsigned long micro = 1;
+
+void myusec_delay(int time)
+{
+	volatile unsigned long i;
+	for(i = 0; i < time * micro; i++)
+		;
+}
+
+void myusec_calibrate_delay()
+{
+	int count = 1000;
+	unsigned long timeusec;
+	struct timeval start, end;
+	int ok = 0;
+	void myusec_delay(int time);
+
+	printf("Setting up microsecond timing loop\n");
+	while (!ok) {
+		//fprintf(stderr, "Try %d\n", count);
+		gettimeofday(&start, 0);
+		myusec_delay(count);
+		gettimeofday(&end, 0);
+		timeusec = 1000000 * (end.tv_sec - start.tv_sec ) + 
+			(end.tv_usec - start.tv_usec);
+		//fprintf(stderr, "timeusec is %d\n", timeusec);
+		count *= 2;
+		if (timeusec < 1000000/4)
+			continue;
+		ok = 1;
+	}
+
+	// compute one microsecond. That will be count / time
+	micro = count / timeusec;
+
+	fprintf(stderr, "%ldM loops per second\n", (unsigned long)micro);
+
+
+}