Board enable for EPoX EP-8RDA3+.

SocketA + nForce2. Board enable seems extremely similar to the
CK804 based board enable for Gigabyte GA-K8N-SLI.

Motherboard includes a second ethernet controller and an Agere
firewire controller with valid subsystem ids, so these are used for
matching the board.

Signed-off-by: Luc Verhaegen <libv@skynet.be>

Index: board_enable.c
===================================================================
--- board_enable.c	(revision 743)
+++ board_enable.c	(working copy)
@@ -967,6 +967,33 @@
 }
 
 /**
+ * Suited for EPoX EP-8RDA3+: Socket A + nForce2 Ultra 400.
+ */
+static int board_epox_ep_8rda3plus(const char *name)
+{
+	struct pci_dev *dev;
+	uint32_t base;
+	uint8_t tmp;
+
+	dev = pci_dev_find(0x10DE, 0x0060);	/* NVIDIA nForce2 ISA Bridge */
+	if (!dev) {
+		fprintf(stderr, "\nERROR: NVIDIA ISA bridge not found.\n");
+		return -1;
+	}
+
+	base = pci_read_long(dev, 0x64) & 0x0000FF00; /* System control area */
+
+	/* If anyone knows more about the nforce2, feel free to explain this.
+	 * Looks suspiciously like the CK804 board enable but with a
+	 * different register offset. */
+	tmp = INB(base + 0xF1);
+	tmp |= 0x05;
+	OUTB(tmp, base + 0xF1);
+
+	return 0;
+}
+
+/**
  * We use 2 sets of IDs here, you're free to choose which is which. This
  * is to provide a very high degree of certainty when matching a board on
  * the basis of subsystem/card IDs. As not every vendor handles
@@ -1006,6 +1033,7 @@
 	{0x8086, 0x3590, 0x1028, 0x016c,  0x1000, 0x0030, 0x1028, 0x016c, NULL,         NULL,          "Dell",        "S1850",              ich5_gpio23_raise},
 	{0x1106, 0x3038, 0x1019, 0x0996,  0x1106, 0x3177, 0x1019, 0x0996, NULL,         NULL,          "Elitegroup",  "K7VTA3",             it8705f_write_enable_2e},
 	{0x1106, 0x3177, 0x1106, 0x3177,  0x1106, 0x3059, 0x1695, 0x3005, NULL,         NULL,          "EPoX",        "EP-8K5A2",           board_epox_ep_8k5a2},
+	{0x10EC, 0x8139, 0x1695, 0x9001,  0x11C1, 0x5811, 0x1695, 0x9015, NULL,         NULL,          "EPoX",        "EP-8RDA3+",          board_epox_ep_8rda3plus},
 	{0x8086, 0x7110,      0,      0,  0x8086, 0x7190,      0,      0, "epox",       "ep-bx3",      "EPoX",        "EP-BX3",             board_epox_ep_bx3},
 	{0x1039, 0x0761,      0,      0,       0,      0,      0,      0, "gigabyte",   "2761gxdk",    "GIGABYTE",    "GA-2761GXDK",        it87xx_probe_spi_flash},
 	{0x1106, 0x3227, 0x1458, 0x5001,  0x10ec, 0x8139, 0x1458, 0xe000, NULL,         NULL,          "GIGABYTE",    "GA-7VT600",          it8705_rom_write_enable},