Initial revision.

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2026 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 227 insertions, 0 deletions

diff --git a/src/superio/smsc/lpc47b272/superio.c b/src/superio/smsc/lpc47b272/superio.c
new file mode 100644
index 0000000000..91b63094ac
--- /dev/null
+++ b/src/superio/smsc/lpc47b272/superio.c
@@ -0,0 +1,227 @@
+/*

+ * $Header$

+ *

+ * superio.c: RAM driver for SMSC LPC47B272 Super I/O chip

+ *

+ * Copyright 2000  AG Electronics Ltd.
+ * Copyright 2003-2004 Linux Networx
+ * Copyright 2004 Tyan 
+ * Copyright (C) 2005 Digital Design Corporation

+ *

+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

+ *

+ * $Log$

+ *

+ */

+
+#include <arch/io.h>
+#include <device/device.h>
+#include <device/pnp.h>
+#include <console/console.h>
+#include <device/smbus.h>
+#include <string.h>
+#include <bitops.h>
+#include <uart8250.h>
+#include <pc80/keyboard.h>
+#include "chip.h"
+#include "lpc47b272.h"
+
+// Forward declarations

+static void enable_dev(device_t dev);

+void lpc47b272_pnp_set_resources(device_t dev);
+void lpc47b272_pnp_set_resources(device_t dev);
+void lpc47b272_pnp_enable_resources(device_t dev);
+void lpc47b272_pnp_enable(device_t dev);
+static void lpc47b272_init(device_t dev);
+
+static void pnp_enter_conf_state(device_t dev);

+static void pnp_exit_conf_state(device_t dev);

+static void dump_pnp_device(device_t dev);
+
+
+struct chip_operations superio_smsc_lpc47b272_ops = {
+	CHIP_NAME("smsc lpc47b272")
+	.enable_dev = enable_dev
+};
+
+static struct device_operations ops = {
+	.read_resources   = pnp_read_resources,
+	.set_resources    = lpc47b272_pnp_set_resources,
+	.enable_resources = lpc47b272_pnp_enable_resources,
+	.enable           = lpc47b272_pnp_enable,
+	.init             = lpc47b272_init,
+};
+
+static struct pnp_info pnp_dev_info[] = {
+        { &ops, LPC47B272_FDC,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
+        { &ops, LPC47B272_PP,   PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
+        { &ops, LPC47B272_SP1,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
+        { &ops, LPC47B272_SP2,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
+        { &ops, LPC47B272_KBC,  PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
+        { &ops, LPC47B272_RT,   PNP_IO0, { 0x780, 0 }, },
+};
+
+/**********************************************************************************/

+/*								PUBLIC INTERFACE								  */

+/**********************************************************************************/

+

+//----------------------------------------------------------------------------------

+// Function:    	enable_dev

+// Parameters:  	dev - pointer to structure describing a Super I/O device 

+// Return Value:	None

+// Description: 	Create device structures and allocate resources to devices 

+//					specified in the pnp_dev_info array (above).

+//

+static void enable_dev(device_t dev)

+{

+	pnp_enable_devices(dev, &pnp_ops, 

+					   sizeof(pnp_dev_info)/sizeof(pnp_dev_info[0]), 

+					   pnp_dev_info);

+}

+
+//----------------------------------------------------------------------------------

+// Function:    	lpc47b272_pnp_set_resources

+// Parameters:  	dev - pointer to structure describing a Super I/O device 

+// Return Value:	None

+// Description: 	Configure the specified Super I/O device with the resources

+//					(I/O space, etc.) that have been allocated for it.

+//
+void lpc47b272_pnp_set_resources(device_t dev)
+{
+	pnp_enter_conf_state(dev);  
+	pnp_set_resources(dev);
+    pnp_exit_conf_state(dev);  
+}       
+
+void lpc47b272_pnp_enable_resources(device_t dev)
+{       
+	pnp_enter_conf_state(dev);
+    pnp_enable_resources(dev);
+    pnp_exit_conf_state(dev);
+}
+
+void lpc47b272_pnp_enable(device_t dev)
+{
+	pnp_enter_conf_state(dev);   
+	pnp_set_logical_device(dev);
+
+	if(dev->enabled) {
+		pnp_set_enable(dev, 1);
+	}
+	else {
+		pnp_set_enable(dev, 0);
+	}
+	pnp_exit_conf_state(dev);  
+}
+
+//----------------------------------------------------------------------------------

+// Function:    	lpc47b272_init

+// Parameters:  	dev - pointer to structure describing a Super I/O device 

+// Return Value:	None

+// Description: 	Initialize the specified Super I/O device.

+//					Devices other than COM ports and the keyboard controller are 
+//					ignored. For COM ports, we configure the baud rate. 

+//

+static void lpc47b272_init(device_t dev)
+{
+	struct superio_smsc_lpc47b272_config *conf = dev->chip_info;
+	struct resource *res0, *res1;
+
+	if (!dev->enabled)
+		return;
+	
+	switch(dev->path.u.pnp.device) {
+	case LPC47B272_SP1: 
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		init_uart8250(res0->base, &conf->com1);
+		break;
+		
+	case LPC47B272_SP2:
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		init_uart8250(res0->base, &conf->com2);
+		break;
+		
+	case LPC47B272_KBC:
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		res1 = find_resource(dev, PNP_IDX_IO1);
+		init_pc_keyboard(res0->base, res1->base, &conf->keyboard);
+		break;
+	}
+}
+

+/**********************************************************************************/

+/*								PRIVATE FUNCTIONS							      */

+/**********************************************************************************/

+
+//----------------------------------------------------------------------------------

+// Function:    	pnp_enter_conf_state

+// Parameters:  	dev - pointer to structure describing a Super I/O device 

+// Return Value:	None

+// Description: 	Enable access to the LPC47B272's configuration registers.

+//

+static void pnp_enter_conf_state(device_t dev) 

+{
+	outb(0x55, dev->path.u.pnp.port);
+}

+
+//----------------------------------------------------------------------------------

+// Function:    	pnp_exit_conf_state

+// Parameters:  	dev - pointer to structure describing a Super I/O device 

+// Return Value:	None

+// Description: 	Disable access to the LPC47B272's configuration registers.

+//

+static void pnp_exit_conf_state(device_t dev) 

+{
+    outb(0xaa, dev->path.u.pnp.port);
+}
+
+#if 0
+//----------------------------------------------------------------------------------

+// Function:    	dump_pnp_device

+// Parameters:  	dev - pointer to structure describing a Super I/O device 

+// Return Value:	None

+// Description: 	Print the values of all of the LPC47B272's configuration registers.

+//					NOTE: The LPC47B272 must be in configuration mode when this

+//						  function is called.

+//

+static void dump_pnp_device(device_t dev)
+{
+    int register_index;
+    print_debug("\r\n");
+
+    for(register_index = 0; register_index <= LPC47B272_MAX_CONFIG_REGISTER; register_index++) {
+        uint8_t register_value;

+
+        if ((register_index & 0x0f) == 0) {
+                print_debug_hex8(register_index);
+                print_debug_char(':');
+        }

+

+		// Skip over 'register' that would cause exit from configuration mode
+	    if (register_index == 0xaa)
+			register_value = 0xaa;

+		else
+        	register_value = pnp_read_config(dev, register_index);

+

+        print_debug_char(' ');
+        print_debug_hex8(register_value);
+        if ((register_index & 0x0f) == 0x0f) {
+        	print_debug("\r\n");
+        }
+    }

+

+   	print_debug("\r\n");

+}
+#endif