added via vt8231

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1132 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 359 insertions, 0 deletions

diff --git a/src/southbridge/via/vt8231/vt8231.c b/src/southbridge/via/vt8231/vt8231.c
new file mode 100644
index 0000000000..d1bb66ba64
--- /dev/null
+++ b/src/southbridge/via/vt8231/vt8231.c
@@ -0,0 +1,359 @@
+
+#include <arch/io.h>
+#include <device/pci.h>
+#include <device/chip.h>
+#include <console/console.h>
+#include "vt8231.h"
+#include "chip.h"
+
+
+
+void usb_on(int enable)
+{
+	unsigned char regval;
+
+	/* Base 8231 controller */
+	struct pci_dev *dev0 = pci_find_device(PCI_VENDOR_ID_VIA, \
+						PCI_DEVICE_ID_VIA_8231, 0);
+	/* USB controller 1 */
+	struct pci_dev *dev2 = pci_find_device(PCI_VENDOR_ID_VIA, \
+						PCI_DEVICE_ID_VIA_82C586_2, 0);
+	/* USB controller 2 */
+	struct pci_dev *dev3 = pci_find_device(PCI_VENDOR_ID_VIA, \
+						PCI_DEVICE_ID_VIA_82C586_2, \
+						dev2);
+
+	/* enable USB1 */
+	if(dev2) {
+	  if (enable) {
+	    pci_write_config_byte(dev2, 0x3c, 0x05);
+	    pci_write_config_byte(dev2, 0x04, 0x07);
+	  } else {
+	    pci_write_config_byte(dev2, 0x3c, 0x00);
+	    pci_write_config_byte(dev2, 0x04, 0x00);
+	  }
+	}
+
+        if(dev0) {
+	    pci_read_config_byte(dev0, 0x50, &regval);
+	    if (enable) 
+	      regval &= ~(0x10);    
+	    else
+	      regval |= 0x10;    	      
+	    pci_write_config_byte(dev0, 0x50, regval);
+	}
+
+	/* enable USB2 */
+	if(dev3) {
+	  if (enable) {
+	    pci_write_config_byte(dev3, 0x3c, 0x05);
+	    pci_write_config_byte(dev3, 0x04, 0x07);
+	  } else {
+	    pci_write_config_byte(dev3, 0x3c, 0x00);
+	    pci_write_config_byte(dev3, 0x04, 0x00);
+	  }
+	}
+
+        if(dev0) {
+	    pci_read_config_byte(dev0, 0x50, &regval);
+	    if (enable) 
+	      regval &= ~(0x20);    
+	    else
+	      regval |= 0x20;    
+	    pci_write_config_byte(dev0, 0x50, regval);
+	}
+
+}
+
+void keyboard_on()
+{
+	unsigned char regval;
+
+	/* Base 8231 controller */
+	struct pci_dev *dev0 = pci_find_device(PCI_VENDOR_ID_VIA, \
+						PCI_DEVICE_ID_VIA_8231, 0);
+
+	/* kevinh/Ispiri - update entire function to use 
+	   new pci_write_config_byte */
+
+	if (dev0) {
+	    pci_read_config_byte(dev0, 0x51, &regval);
+	    regval |= 0x0f; 
+	    pci_write_config_byte(dev0, 0x51, regval);
+	}
+	pc_keyboard_init();
+
+}
+
+void nvram_on()
+{
+	/*
+	 * the VIA 8231 South has a very different nvram setup than the 
+	 * piix4e ...
+	 * turn on ProMedia nvram.
+	 * TO DO: use the PciWriteByte function here.
+	 */
+
+	/*
+	 * kevinh/Ispiri - I don't think this is the correct address/value
+	 * intel_conf_writeb(0x80008841, 0xFF);
+	 */
+}
+
+
+/*
+ * Enable the ethernet device and turn off stepping (because it is integrated 
+ * inside the southbridge)
+ */
+void ethernet_fixup()
+{
+	struct pci_dev	*dev, *edev;
+	u8		byte;
+
+	printk_info("Ethernet fixup\n");
+
+	edev = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_7, 0);
+	if (edev != NULL) {
+		printk_debug("Configuring VIA LAN\n");
+
+		/* We don't need stepping - though the device supports it */
+		pci_read_config_byte(edev, PCI_COMMAND, &byte);
+		byte &= ~PCI_COMMAND_WAIT;
+		pci_write_config_byte(edev, PCI_COMMAND, byte);
+	} else {
+		printk_debug("VIA LAN not found\n");
+	}
+}
+
+
+void southbridge_fixup()
+{
+	unsigned char enables;
+	struct pci_dev *dev0;
+	struct pci_dev *dev1;
+	struct pci_dev *devpwr;
+
+	// to do: use the pcibios_find function here, instead of 
+	// hard coding the devfn. 
+	// done - kevinh/Ispiri
+
+	/* Base 8231 controller */
+	dev0 = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 0);
+	/* IDE controller */
+	dev1 = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, \
+					0);
+	/* Power management controller */
+	 devpwr = pci_find_device(PCI_VENDOR_ID_VIA, \
+			 		PCI_DEVICE_ID_VIA_8231_4, 0);
+
+	// enable the internal I/O decode
+	enables = pci_read_config_byte(dev0, 0x6C, &enables);
+	enables |= 0x80;
+	pci_write_config_byte(dev0, 0x6C, enables);
+
+	// Map 4MB of FLASH into the address space
+	pci_write_config_byte(dev0, 0x41, 0x7f);
+
+	// Set bit 6 of 0x40, because Award does it (IO recovery time)
+	// IMPORTANT FIX - EISA 0x4d0 decoding must be on so that PCI 
+	// interrupts can be properly marked as level triggered.
+	enables = pci_read_config_byte(dev0, 0x40, &enables); enables |= 0x44;
+	pci_write_config_byte(dev0, 0x40, enables);
+
+	// Set 0x42 to 0xf0 to match Award bios
+	enables = pci_read_config_byte(dev0, 0x42, &enables);
+	enables |= 0xf0;
+	pci_write_config_byte(dev0, 0x42, enables);
+
+	// Set bit 3 of 0x4a, to match award (dummy pci request)
+	enables = pci_read_config_byte(dev0, 0x4a, &enables);
+	enables |= 0x08;
+	pci_write_config_byte(dev0, 0x4a, enables);
+
+	// Set bit 3 of 0x4f to match award (use INIT# as cpu reset)
+	enables = pci_read_config_byte(dev0, 0x4f, &enables);
+	enables |= 0x08;
+	pci_write_config_byte(dev0, 0x4f, enables);
+
+	// Set 0x58 to 0x03 to match Award
+	pci_write_config_byte(dev0, 0x58, 0x03);
+
+	// enable the ethernet/RTC
+	if(dev0) {
+	    pci_read_config_byte(dev0, 0x51, &enables);
+	    enables |= 0x18; 
+	    pci_write_config_byte(dev0, 0x51, enables);
+	}
+	
+
+	// enable com1 and com2. 
+	if (conf->enable_com_ports) {
+	  enables = pci_read_config_byte(dev0, 0x6e, &enables);
+	  /* 0x80 is enable com port b, 0x10 is to make it com2, 0x8
+	   * is enable com port a as com1 kevinh/Ispiri - Old code
+	   * thought 0x01 would make it com1, that was wrong /*
+	   * enables = 0x80 | 0x10 | 0x8 ; pci_write_config_byte(dev0,
+	   * 0x6e, enables); // note: this is also a redo of some port
+	   * of assembly, but we want everything up.
+	   */
+
+	   /* set com1 to 115 kbaud not clear how to do this yet.
+	    * forget it; done in assembly.
+	    */
+#endif
+
+	// enable IDE, since Linux won't do it.
+	// First do some more things to devfn (17,0)
+	// note: this should already be cleared, according to the book. 
+	pci_read_config_byte(dev0, 0x50, &enables);
+	printk_debug("IDE enable in reg. 50 is 0x%x\n", enables);
+	enables &= ~8; // need manifest constant here!
+	printk_debug("set IDE reg. 50 to 0x%x\n", enables);
+	pci_write_config_byte(dev0, 0x50, enables);
+
+	// set default interrupt values (IDE)
+	pci_read_config_byte(dev0, 0x4c, &enables);
+	printk_debug("IRQs in reg. 4c are 0x%x\n", enables & 0xf);
+	// clear out whatever was there. 
+	enables &= ~0xf;
+	enables |= 4;
+	printk_debug("setting reg. 4c to 0x%x\n", enables);
+	pci_write_config_byte(dev0, 0x4c, enables);
+	
+	// set up the serial port interrupts. 
+	// com2 to 3, com1 to 4
+	pci_write_config_byte(dev0, 0x46, 0x04);
+        pci_write_config_byte(dev0, 0x47, 0x03);
+
+	//
+	// Power management setup
+	//
+	// Set ACPI base address to IO 0x4000
+	pci_write_config_dword(devpwr, 0x48, 0x4001);
+
+	// Enable ACPI access (and setup like award)
+	pci_write_config_byte(devpwr, 0x41, 0x84);
+
+	// Set hardware monitor base address to IO 0x6000
+	pci_write_config_dword(devpwr, 0x70, 0x6001);
+
+	// Enable hardware monitor (and setup like award)
+	pci_write_config_byte(devpwr, 0x74, 0x01);
+
+	// set IO base address to 0x5000
+	pci_write_config_dword(devpwr, 0x90, 0x5001);
+
+	// Enable SMBus 
+	pci_write_config_byte(devpwr, 0xd2, 0x01);
+
+	//
+	// IDE setup
+	//
+	if (conf->enable_native_ide) {
+	  // Run the IDE controller in 'compatiblity mode - i.e. don't use PCI
+	// interrupts.  Using PCI ints confuses linux for some reason.
+	  
+	  pci_read_config_byte(dev1, 0x42, &enables);
+	  printk_debug("enables in reg 0x42 0x%x\n", enables);
+	  enables &= ~0xc0;		// compatability mode
+	  pci_write_config_byte(dev1, 0x42, enables);
+	  pci_read_config_byte(dev1, 0x42, &enables);
+	  printk_debug("enables in reg 0x42 read back as 0x%x\n", enables);
+	}
+
+	pci_read_config_byte(dev1, 0x40, &enables);
+	printk_debug("enables in reg 0x40 0x%x\n", enables);
+	enables |= 3;
+	pci_write_config_byte(dev1, 0x40, enables);
+	pci_read_config_byte(dev1, 0x40, &enables);
+	printk_debug("enables in reg 0x40 read back as 0x%x\n", enables);
+
+	// Enable prefetch buffers
+	pci_read_config_byte(dev1, 0x41, &enables);
+	enables |= 0xf0;
+	pci_write_config_byte(dev1, 0x41, enables);
+
+	// Lower thresholds (cause award does it)
+	pci_read_config_byte(dev1, 0x43, &enables);
+	enables &= ~0x0f;
+	enables |=  0x05;
+	pci_write_config_byte(dev1, 0x43, enables);
+
+	// PIO read prefetch counter (cause award does it)
+	pci_write_config_byte(dev1, 0x44, 0x18);
+
+	// Use memory read multiple
+	pci_write_config_byte(dev1, 0x45, 0x1c);
+
+	// address decoding. 
+	// we want "flexible", i.e. 1f0-1f7 etc. or native PCI
+	// kevinh@ispiri.com - the standard linux drivers seem ass slow when 
+	// used in native mode - I've changed back to classic
+        pci_read_config_byte(dev1, 0x9, &enables);
+        printk_debug("enables in reg 0x9 0x%x\n", enables);
+	// by the book, set the low-order nibble to 0xa. 
+	if (conf->enable_native_ide) {
+	  enables &= ~0xf;
+	  // cf/cg silicon needs an 'f' here. 
+	  enables |= 0xf;
+	} else {
+	  enables &= ~0x5;
+	}
+
+        pci_write_config_byte(dev1, 0x9, enables);
+        pci_read_config_byte(dev1, 0x9, &enables);
+        printk_debug("enables in reg 0x9 read back as 0x%x\n", enables);
+
+	// standard bios sets master bit. 
+	pci_read_config_byte(dev1, 0x4, &enables);
+	printk_debug("command in reg 0x4 0x%x\n", enables);
+	enables |= 7;
+	
+	// No need for stepping - kevinh@ispiri.com
+	enables &= ~0x80;
+
+	pci_write_config_byte(dev1, 0x4, enables);
+	pci_read_config_byte(dev1, 0x4, &enables);
+	printk_debug("command in reg 0x4 reads back as 0x%x\n", enables);
+
+	if (! conf->enable_native_ide) {
+	  // Use compatability mode - per award bios
+	  pci_write_config_dword(dev1, 0x10, 0x0);
+	  pci_write_config_dword(dev1, 0x14, 0x0);
+	  pci_write_config_dword(dev1, 0x18, 0x0);
+	  pci_write_config_dword(dev1, 0x1c, 0x0);
+	  
+	  // Force interrupts to use compat mode - just like Award bios
+	  pci_write_config_byte(dev1, 0x3d, 00);
+	  pci_write_config_byte(dev1, 0x3c, 0xff);
+	}
+
+
+	ethernet_fixup();
+
+	// Start the rtc
+	rtc_init(0);
+}
+
+static void 
+southbridge_init(struct chip *chip, enum chip_pass pass)
+{
+
+	struct southbridge_via_vt8231_config *conf = 
+		(struct southbridge_via_vt8231_config *)chip->chip_info;
+
+	switch (pass) {
+	case CONF_PASS_POST_PCI:
+		vt8231_init(conf);
+		break;
+
+	default:
+		/* nothing yet */
+		break;
+	}
+}
+
+struct chip_control southbridge_via_vt8231_control = {
+	enable: southbridge_init,
+	name:   "VIA vt8231"
+};