Superiotool: Add support for the SMSC FDC37N769.

Here's what a register dump looks like on my test system:

No Super I/O chip found at 0x002e
No Super I/O chip found at 0x004e
No Super I/O chip found at 0x002e
No Super I/O chip found at 0x004e
No Super I/O chip found at 0x002e
No Super I/O chip found at 0x004e
Super I/O found at 0x03f0: id=0x28, rev=0x01
SMSC FDC37N769
idx 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 
val 20 90 80 f4 00 00 ff 00 00 00 40 00 0e 28 01 00 00 00 00 00 02 00 01 03 00 00 00 00 00 00 80 00 00 00 00 00 00 ba 00 00 03 00 00 23 03 03 00 00 
def 28 9c 88 70 00 00 ff 00 00 00 00 00 02 28 NA 00 00 80 RR RR NA NA NA 03 RR RR RR RR RR RR 80 00 3c RR RR 00 00 00 00 00 00 00 RR 00 00 03 00 00 
Probing 0x0370, failed (0xff), data returns 0xff

I'm self-acking this as it's pretty simple stuff, but please let me
know if anything could be improved here, or if you think this
is not trivial enough to warrant self-acking.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2781 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 89 insertions, 0 deletions

diff --git a/util/superiotool/smsc.c b/util/superiotool/smsc.c
new file mode 100644
index 0000000000..805756f7cd
--- /dev/null
+++ b/util/superiotool/smsc.c
@@ -0,0 +1,89 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "superiotool.h"
+
+#define DEVICE_ID_REG	0x0d
+#define DEVICE_REV_REG	0x0e
+
+const static struct superio_registers reg_table[] = {
+	{0x28, "FDC37N769", {
+		{NOLDN,
+			{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
+			 0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,
+			 0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,
+			 0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
+			 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
+			{0x28,0x9c,0x88,0x70,0x00,0x00,0xff,0x00,0x00,0x00,
+			 0x00,0x00,0x02,0x28,NANA,0x00,0x00,0x80,RSVD,RSVD,
+			 NANA,NANA,NANA,0x03,RSVD,RSVD,RSVD,RSVD,RSVD,RSVD,
+			 0x80,0x00,0x3c,RSVD,RSVD,0x00,0x00,0x00,0x00,0x00,
+			 0x00,0x00,RSVD,0x00,0x00,0x03,0x00,0x00,EOT}},
+		{EOT}}},
+	{EOT}
+};
+
+/* Note: The actual SMSC ID is 16 bits, but we must pass 32 bits here. */
+void dump_smsc(uint32_t port, uint32_t id)
+{
+	switch (id) {
+	case 0x28:
+		dump_superio("SMSC", reg_table, port, id);
+		break;
+	default:
+		printf("Unknown SMSC chip, id=0x%02x\n", id);
+		break;
+	}
+}
+
+void probe_idregs_smsc(uint32_t port)
+{
+	uint16_t id, rev;
+
+	outb(0x55, port);		/* Enter configuration mode. */
+
+	/* Read device ID. */
+	id = regval(port, DEVICE_ID_REG);
+	if (id != 0x28) {	/* TODO: Support for other SMSC chips. */
+		if (inb(port) != 0xff)
+			printf("No Super I/O chip found at 0x%04x\n", port);
+		else
+			printf("Probing 0x%04x, failed (0x%02x), data returns 0x%02x\n", port, inb(port), inb(port + 1));
+		return;
+	}
+
+	/* Read chip revision. */
+	rev = regval(port, DEVICE_REV_REG);
+
+	printf("Super I/O found at 0x%04x: id=0x%02x, rev=0x%02x\n",
+	       port, id, rev);
+
+	switch (id) {
+	case 0x28:
+		dump_smsc(port, id);
+		break;
+	default:
+		printf("No dump for ID 0x%04x\n", id);
+		break;
+	}
+
+	outb(0xaa, port);		/* Exit configuration mode. */
+}
+