[PATCH] makes STLC2500 start without files download & other cleanup

[Fabien Chevalier <fchevalier@silicom.fr>]

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All,

I cooked up a patch for the STLC2500 startup sequence.
The changes are listed below:

* Makes the firmware & parameters download optional : even though those 
are supposed to be mandatory, practive shows that the chip can run 
without them.
* Cleanup the speed setting step : call the Ericsson routines directly 
instead of duplicating the code.
* Reset the chip only once after all settings & downloads have been done.

I couldn't regression test the file download stuff as i don't have any 
firmware patch files or parameters files to download.

Denis, it would be great if you could give this patch a try on a 
Greenphone, see if i didn't break anything :-)

Cheers,

Fabien



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[-- Attachment #2: hciattach-stl2500-cleanup-and-fix.patch --]
[-- Type: text/x-patch; name="hciattach-stl2500-cleanup-and-fix.patch", Size: 4639 bytes --]

--- tools/hciattach.c	(.../trunk)	(révision 89)
+++ tools/hciattach.c	(.../branches/20070928_1730)	(révision 89)
@@ -829,62 +829,20 @@
 
 extern int stlc2500_init(int fd, bdaddr_t *bdaddr);
 
 static int stlc2500(int fd, struct uart_t *u, struct termios *ti)
 {
 	bdaddr_t bdaddr;
-	char cmd[5];
 	unsigned char resp[10];
 	int n;
+	int rvalue;
 
-	/* STLC2500 Set Baud Rate stuff */
-	/* We should set the baud rate first, so the firmware download */
-	/* goes much faster */
-
-	/* STLC2500 Seems to support the Ericsson set baud rate stuff */
-	/* It should also support the ST Set Baud Rate command */
-	/* (as in st() function above, but those commands never succeed */
-	cmd[0] = HCI_COMMAND_PKT;
-	cmd[1] = 0x09;
-	cmd[2] = 0xfc;
-	cmd[3] = 0x01;
-
-	switch (u->speed) {
-	case 57600:
-		cmd[4] = 0x03;
-		break;
-	case 115200:
-		cmd[4] = 0x02;
-		break;
-	case 230400:
-		cmd[4] = 0x01;
-		break;
-	case 460800:
-		cmd[4] = 0x00;
-		break;
-	case 921600:
-		cmd[4] = 0x20;
-		break;
-	default:
-		cmd[4] = 0x02;
-		u->speed = 115200;
-		break;
-	}
-
-#ifdef STLC2500_DEBUG
-	fprintf(stderr, "Sending Baud Rate %02x\n", cmd[4]);
-#endif
-	/* Send initialization command */
-	if (write(fd, cmd, 5) != 5) {
-		perror("Failed to write init command");
-		return -1;
-	}
-
-	/* Need to wait here to give a chance for the device to set baud */
-	/* But no more than 0.5 seconds */
-	usleep(200000);
+	/* STLC2500 has an ericsson core */
+	rvalue = ericsson(fd, u, ti);
+	if(rvalue != 0)
+		return rvalue;
 
 #ifdef STLC2500_DEBUG
 	fprintf(stderr, "Setting speed\n");
 #endif
 	if (set_speed(fd, ti, u->speed) < 0) {
 		perror("Can't set baud rate");
Index: tools/hciattach_st.c
===================================================================
--- tools/hciattach_st.c	(.../trunk)	(révision 89)
+++ tools/hciattach_st.c	(.../branches/20070928_1730)	(révision 89)
@@ -119,13 +119,13 @@
 	DIR *dir;
 	struct dirent *d;
 	char pathname[PATH_MAX], filename[NAME_MAX], prefix[20];
 	unsigned char cmd[256];
 	unsigned char buf[256];
 	uint8_t seqnum = 0;
-	int fd, size, len;
+	int fd, size, len, found_fw_file;
 
 	memset(filename, 0, sizeof(filename));
 
 	snprintf(prefix, sizeof(prefix), "STLC2500_R%d_%02d_",
 						version >> 8, version & 0xff);
 
@@ -135,12 +135,13 @@
 		strcpy(pathname, ".");
 		dir = opendir(pathname);
 		if (!dir)
 			return -errno;
 	}
 
+	found_fw_file = 0;	
 	while (1) {
 		d = readdir(dir);
 		if (!d)
 			break;
 
 		if (strncmp(d->d_name + strlen(d->d_name) - strlen(suffix),
@@ -149,16 +150,20 @@
 
 		if (strncmp(d->d_name, prefix, strlen(prefix)))
 			continue;
 
 		snprintf(filename, sizeof(filename), "%s/%s",
 							pathname, d->d_name);
+		found_fw_file = 1;
 	}
 
 	closedir(dir);
 
+	if(!found_fw_file)
+		return -ENOENT;
+
 	printf("Loading file %s\n", filename);
 
 	fd = open(filename, O_RDONLY);
 	if (fd < 0) {
 		perror("Can't open firmware file");
 		return -errno;
@@ -191,47 +196,54 @@
 int stlc2500_init(int dd, bdaddr_t *bdaddr)
 {
 	unsigned char cmd[16];
 	unsigned char buf[254];
 	uint16_t version;
 	int len;
+	int err;
 
-	len = do_command(dd, 0x04, 0x0001, NULL, 0, buf, sizeof(buf));
+	/* Hci_Cmd_Ericsson_Read_Revision_Information */	
+	len = do_command(dd, 0xff, 0x000f, NULL, 0, buf, sizeof(buf));
 	if (len < 0)
 		return -1;
 
-	version = buf[2] << 8 | buf[1];
-
-	if (load_file(dd, version, ".ptc") < 0)
-		return -1;
+	printf("%s\n", buf);
 
-	len = do_command(dd, 0x03, 0x0003, NULL, 0, buf, sizeof(buf));
+	/* HCI_Read_Local_Version_Information */	
+	len = do_command(dd, 0x04, 0x0001, NULL, 0, buf, sizeof(buf));
 	if (len < 0)
 		return -1;
 
-	if (load_file(dd, buf[2] << 8 | buf[1], ".ssf") < 0)
-		return -1;
-
-	len = do_command(dd, 0x03, 0x0003, NULL, 0, buf, sizeof(buf));
-	if (len < 0)
-		return -1;
+	version = buf[2] << 8 | buf[1];
 
-	len = do_command(dd, 0xff, 0x000f, NULL, 0, buf, sizeof(buf));
-	if (len < 0)
-		return -1;
+	err = load_file(dd, version, ".ptc");
+	if(err < 0) {
+		if(err == -ENOENT) 	
+			fprintf(stderr, "No ROM patch file loaded.\n");
+		else
+			return -1;
+	}
 
-	printf("%s\n", buf);
+	err = load_file(dd, buf[2] << 8 | buf[1], ".ssf");
+	if(err < 0) {
+		if(err == -ENOENT) 	
+			fprintf(stderr, "No static settings file loaded.\n");
+		else
+			return -1;
+	}
 
 	cmd[0] = 0xfe;
 	cmd[1] = 0x06;
 	bacpy((bdaddr_t *) (cmd + 2), bdaddr);
 
+	/* Hci_Cmd_ST_Store_In_NVDS */	
 	len = do_command(dd, 0xff, 0x0022, cmd, 8, buf, sizeof(buf));
 	if (len < 0)
 		return -1;
 
+	/* HCI_Reset : applies parameters*/
 	len = do_command(dd, 0x03, 0x0003, NULL, 0, buf, sizeof(buf));
 	if (len < 0)
 		return -1;
 
 	return 0;
 }


[-- Attachment #3: fchevalier.vcf --]
[-- Type: text/x-vcard, Size: 253 bytes --]

begin:vcard
fn:Fabien CHEVALIER
n:CHEVALIER;Fabien
org:SILICOM
adr:;;4 rue de Jouanet; RENNES ATALANTE;;35700;FRANCE
email;internet:fchevalier@silicom.fr
title:Software & Studies Engineer
tel;work:+33 (0) 2 99 84 17 17
version:2.1
end:vcard