Board enable for Shuttle FN25 (SN25P)

Shuttle SFF PC is SN25P, board FN25, AMD socket 939 with an nForce4
chipset.

Config register 0x92 on the ISA bridge needs to be cleared for TBL#
to be raised. No information about individual bits of this register
is currently available.

Corresponding to flashrom svn r752.
Signed-off-by: Luc Verhaegen <libv@skynet.be>
Acked-by: Ulf Mehlig <ulf@ufpa.br>

board_enable.c

@@ -399,6 +399,26 @@ static int board_ibm_x3455(const char *name)
 	return 0;
 }
 
+/**
+ * Suited for Shuttle FN25 (SN25P): AMD S939 + Nvidia CK804 (nForce4).
+ */
+static int board_shuttle_fn25(const char *name)
+{
+	struct pci_dev *dev;
+
+	dev = pci_dev_find(0x10DE, 0x0050);	/* NVIDIA CK804 ISA Bridge. */
+	if (!dev) {
+		fprintf(stderr,
+			"\nERROR: NVIDIA nForce4 ISA bridge not found.\n");
+		return -1;
+	}
+
+	/* one of those bits seems to be connected to TBL#, but -ENOINFO. */
+	pci_write_byte(dev, 0x92, 0);
+
+	return 0;
+}
+
 /**
  * No docs, so we are just guessing that these might be individual gpio lines.
  */
@@ -1086,6 +1106,7 @@ struct board_pciid_enable board_pciid_enables[] = {
 	{0x8086, 0x2658, 0x1462, 0x7046,  0x1106, 0x3044, 0x1462, 0x046d, NULL,         NULL,          "MSI",         "MS-7046",            ich6_gpio19_raise},
 	{0x10de, 0x005e,      0,      0,       0,      0,      0,      0, "msi",        "k8n-neo3",    "MSI",         "MS-7135 (K8N Neo3)", w83627thf_gpio4_4_raise_4e},
 	{0x1106, 0x3104, 0x1297, 0xa238,  0x1106, 0x3059, 0x1297, 0xc063, NULL,         NULL,          "Shuttle",     "AK38N",              it8705f_write_enable_2e},
+	{0x10DE, 0x0050, 0x1297, 0x5036,  0x1412, 0x1724, 0x1297, 0x5036, NULL,         NULL,          "Shuttle",     "FN25",               board_shuttle_fn25},
 	{0x1106, 0x3038, 0x0925, 0x1234,  0x1106, 0x3058, 0x15DD, 0x7609, NULL,         NULL,          "Soyo",        "SY-7VCA",            board_soyo_sy_7vca},
 	{0x8086, 0x1076, 0x8086, 0x1176,  0x1106, 0x3059, 0x10f1, 0x2498, NULL,         NULL,          "Tyan",        "S2498 (Tomcat K7M)", board_asus_a7v8x_mx},
 	{0x1106, 0x0314, 0x1106, 0xaa08,  0x1106, 0x3227, 0x1106, 0xAA08, NULL,         NULL,          "VIA",         "EPIA-CN",            board_via_epia_sp},