--- i810switch.c.old	2004-08-09 17:05:59.000000000 +0900
+++ i810switch.c	2004-08-09 18:28:26.000000000 +0900
@@ -8,7 +8,7 @@
 #include <string.h>
 #include <errno.h>
 
-#define CMD_LSPCI "lspci"
+#define CMD_LSPCI "/usr/bin/lspci"
 
 static const char *Opt_lcd = NULL;
 static const char *Opt_crt = NULL;
@@ -52,6 +52,8 @@
 #define I830_DSPACTRL		0x70180
 #define I830_DSPBCTRL		0x71180
 
+#define GRX			0x3ce
+
 #define I810STR			"8086:7121"
 #define I810ESTR		"8086:7123"
 #define I810_DC100STR_1		"8086:7125"
@@ -133,7 +135,7 @@
 {
 	struct i810_par par;
 	unsigned long addr;
-	int i, crt = -1, lcd = -1, err = 0, count = 0, chiptype, len = 0;
+	int i, bios_init = 0, crt = -1, lcd = -1, err = 0, count = 0, chiptype, len = 0;
 	FILE *pci_f;
 	char *buff = NULL;
 	char lspcistr[] = CMD_LSPCI " -v -d xxxx:xxxx";
@@ -143,7 +145,9 @@
 
 	while (--argc > 0) {
 		argv++;
-		if (!strcmp(argv[0], "crt")) {
+		if (!strcmp(argv[0], "init")) {
+			bios_init = 1;
+		} else if (!strcmp(argv[0], "crt")) {
 			if (--argc > 0) {
 				argv++;
 				if (!strcmp(argv[0], "on"))
@@ -206,7 +210,7 @@
 	pclose(pci_f);
 
 	memset(&par, 0, sizeof(struct i810_par));
-	par.mem = open("/dev/mem", (crt+lcd == -2) ? O_RDONLY : O_RDWR);
+	par.mem = open("/dev/mem", ((crt+lcd == -2)&&(bios_init == 0)) ? O_RDONLY : O_RDWR);
 	if (par.mem == -1) {
     	  	i = errno;
 		perror("/dev/mem");
@@ -217,7 +221,7 @@
 	}
 	par.flag |= I810_MEMOPEN;
 
-	par.mmio = mmap(NULL, 512 * 1024, (crt+lcd == -2) ? PROT_READ : PROT_WRITE | PROT_READ,
+	par.mmio = mmap(NULL, 512 * 1024, ((crt+lcd == -2)&&(bios_init == 0)) ? PROT_READ : PROT_WRITE | PROT_READ,
 			MAP_SHARED, par.mem, addr);
 	if (!par.mmio) {
 		release_resource(&par);
@@ -226,6 +230,24 @@
 
 	par.flag |= I810_MMIO;
 
+	if (bios_init) {
+#define VIDEO_BIOS_SCRATCH 0x18
+		int gr18, grx;
+
+		printf("mmio address %lx\n", par.mmio);
+		printf("real address %lx\n", addr);
+
+		i810_writeb(par.mmio, GRX, VIDEO_BIOS_SCRATCH);
+		gr18 = i810_readb(par.mmio, GRX + 1);
+		gr18 |= 0x80;
+		printf("new GR18 is %x\n", gr18);
+		i810_writeb(par.mmio, GRX, VIDEO_BIOS_SCRATCH);
+		i810_writeb(par.mmio, GRX + 1, gr18); 
+
+		release_resource(&par);
+		exit(0);
+	}
+
 	if (crt+lcd == -2) {
 		if (chiptype == I810) {
 			printf("CRT: ");