Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-36

Creator:  Li-Ta Lo <ollie@lanl.gov>

emulator update

Correction to the reduce emulator from Paulo


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1952 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 41 insertions, 409 deletions

diff --git a/src/southbridge/via/vt8231/vt8231.c b/src/southbridge/via/vt8231/vt8231.c
index d78bb2cf86..514d0c0626 100644
--- a/src/southbridge/via/vt8231/vt8231.c
+++ b/src/southbridge/via/vt8231/vt8231.c
@@ -1,441 +1,73 @@
-
-#include <arch/io.h>
+#include <console/console.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ops.h>
 #include <device/pci_ids.h>
-#include <console/console.h>
+
+#include <pc80/mc146818rtc.h>
+#include <pc80/keyboard.h>
+
 #include "vt8231.h"
 #include "chip.h"
 
-void pc_keyboard_init(void);
+/* Base 8231 controller */
+static device_t lpc_dev;
 
-void hard_reset(void) 
+void hard_reset(void)
 {
-	printk_err("NO HARD RESET ON VT8231! FIX ME!\n");
-}
-
-static void usb_on(int enable)
-{
-	unsigned char regval;
-
-	/* Base 8231 controller */
-	device_t dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 0);
-	/* USB controller 1 */
-	device_t dev2 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, 0);
-	/* USB controller 2 */
-	device_t dev3 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, dev2);
-	
-	/* enable USB1 */
-	if(dev2) {
-		if (enable) {
-			pci_write_config8(dev2, 0x3c, 0x05);
-			pci_write_config8(dev2, 0x04, 0x07);
-		} else {
-			pci_write_config8(dev2, 0x3c, 0x00);
-			pci_write_config8(dev2, 0x04, 0x00);
-		}
-	}
-	
-	if(dev0) {
-		regval = pci_read_config8(dev0, 0x50);
-		if (enable) 
-			regval &= ~(0x10);    
-		else
-			regval |= 0x10;    	      
-		pci_write_config8(dev0, 0x50, regval);
-	}
-	
-	/* enable USB2 */
-	if(dev3) {
-		if (enable) {
-			pci_write_config8(dev3, 0x3c, 0x05);
-			pci_write_config8(dev3, 0x04, 0x07);
-		} else {
-			pci_write_config8(dev3, 0x3c, 0x00);
-			pci_write_config8(dev3, 0x04, 0x00);
-		}
-	}
-	
-	if(dev0) {
-		regval = pci_read_config8(dev0, 0x50);
-		if (enable) 
-			regval &= ~(0x20);    
-		else
-			regval |= 0x20;    
-		pci_write_config8(dev0, 0x50, regval);
-	}
+        printk_err("NO HARD RESET ON VT8231! FIX ME!\n");
 }
 
 static void keyboard_on(void)
 {
 	unsigned char regval;
-	
-	/* Base 8231 controller */
-	device_t dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 0);
-	
-	/* kevinh/Ispiri - update entire function to use 
-	   new pci_write_config8 */
 
-	if (dev0) {
-		regval = pci_read_config8(dev0, 0x51);
+	if (lpc_dev) {
+		regval = pci_read_config8(lpc_dev, 0x51);
 		regval |= 0x0f; 
-		pci_write_config8(dev0, 0x51, regval);
+		pci_write_config8(lpc_dev, 0x51, regval);
 	}
 	init_pc_keyboard(0x60, 0x64, 0);
 }
 
-static void nvram_on(void)
+static void com_port_on(void)
 {
-	/*
-	 * 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);
+#if 0
+	// enable com1 and com2. 
+	enables = pci_read_config8(dev, 0x6e);
+	
+	/* 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_config8(dev, 0x6e,
+	 * enables); // note: this is also a redo of some port of
+	 * assembly, but we want everything up.
 	 */
-}
-
 
-/*
- * Enable the ethernet device and turn off stepping (because it is integrated 
- * inside the southbridge)
- */
-static void ethernet_fixup()
-{
-	device_t	edev;
-	uint8_t		byte;
-
-	printk_info("Ethernet fixup\n");
-
-	edev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_7, 0);
-	if (edev) {
-		printk_debug("Configuring VIA LAN\n");
-		
-		/* We don't need stepping - though the device supports it */
-		byte = pci_read_config8(edev, PCI_COMMAND);
-		byte &= ~PCI_COMMAND_WAIT;
-		pci_write_config8(edev, PCI_COMMAND, byte);
-	} else {
-		printk_debug("VIA LAN not found\n");
-	}
-}
-
-
-/* we need to do things in this function so that PCI scan will find 
- * them.  One problem here is that we can't use ANY of the new device 
- * stuff. This work here precedes all that.      
- * Fundamental problem with linuxbios V2 architecture.
- * You can't do pci control in the C code without having done a PCI scan.
- * But in some cases you need to to pci control in the c code before doing
- * a PCI scan. But you can't use arch/romcc_io.h (the code you need) because
- * that has functions with the same name but different type signatures
- * (e.g. device_t). This needs to get fixed. We need low-level pci scans
- * in the C code. 
- */
-static void vt8231_pci_enable(struct southbridge_via_vt8231_config *conf) 
-{
-	/*
-	  unsigned long busdevfn = 0x8000;
-	  if (conf->enable_ide) {
-	  printk_debug("%s: enabling IDE function\n", __FUNCTION__);
-	  }
-	*/
-}
-
-/* PIRQ init
- */
-void pci_assign_irqs(unsigned bus, unsigned slot, const unsigned char pIntAtoD[4]);
-
-
-static const unsigned char southbridgeIrqs[4] = { 11, 5, 10, 12 };
-static const unsigned char enetIrqs[4] = { 11, 5, 10, 12 };
-static const unsigned char slotIrqs[4] = { 5, 10, 12, 11 };
-
-/*
-	Our IDSEL mappings are as follows
-	PCI slot is AD31          (device 15) (00:14.0)
-	Southbridge is AD28       (device 12) (00:11.0)
-*/
-static void pci_routing_fixup(struct device *dev)
-{
-
-	printk_info("%s: dev is %p\n", __FUNCTION__, dev);
-	if (dev) {
-		/* initialize PCI interupts - these assignments depend
-		   on the PCB routing of PINTA-D 
-
-		   PINTA = IRQ11
-		   PINTB = IRQ5
-		   PINTC = IRQ10
-		   PINTD = IRQ12
-		*/
-		pci_write_config8(dev, 0x55, 0xb0);
-		pci_write_config8(dev, 0x56, 0xa5);
-		pci_write_config8(dev, 0x57, 0xc0);
-	}
-
-	// Standard southbridge components
-	printk_info("setting southbridge\n");
-	pci_assign_irqs(0, 0x11, southbridgeIrqs);
-
-	// Ethernet built into southbridge
-	printk_info("setting ethernet\n");
-	pci_assign_irqs(0, 0x12, enetIrqs);
-
-	// PCI slot
-	printk_info("setting pci slot\n");
-	pci_assign_irqs(0, 0x14, slotIrqs);
-	printk_info("%s: DONE\n", __FUNCTION__);
-}
-
-
-void
-dump_south(void)
-{
-	device_t dev0;
-	dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 0);
-	int i,j;
-	
-	for(i = 0; i < 256; i += 16) {
-		printk_debug("0x%x: ", i);
-		for(j = 0; j < 16; j++) {
-			printk_debug("%02x ", pci_read_config8(dev0, i+j));
-		}
-		printk_debug("\n");
-	}
+	/* set com1 to 115 kbaud not clear how to do this yet.
+	 * forget it; done in assembly.
+	 */
+#endif
 }
 
-static void vt8231_init(struct southbridge_via_vt8231_config *conf)
+/* FixME: to be removed ? */
+static void vt8231_enable(struct device *dev)
 {
-	unsigned char enables;
-	device_t dev0;
-	device_t dev1;
-	device_t devpwr;
-	
-	// to do: use the pcibios_find function here, instead of 
-	// hard coding the devfn. 
-	// done - kevinh/Ispiri
-	printk_debug("vt8231 init\n");
-	/* Base 8231 controller */
-	dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 0);
-	/* IDE controller */
-	dev1 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, 0);
-	/* Power management controller */
-	devpwr = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4, 0);
-
-	// enable the internal I/O decode
-	enables = pci_read_config8(dev0, 0x6C);
-	enables |= 0x80;
-	pci_write_config8(dev0, 0x6C, enables);
-	
-	// Map 4MB of FLASH into the address space
-	pci_write_config8(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_config8(dev0, 0x40);
-	pci_write_config8(dev0, 0x40, enables);
-	
-	// Set 0x42 to 0xf0 to match Award bios
-	enables = pci_read_config8(dev0, 0x42);
-	enables |= 0xf0;
-	pci_write_config8(dev0, 0x42, enables);
-	
-	// Set bit 3 of 0x4a, to match award (dummy pci request)
-	enables = pci_read_config8(dev0, 0x4a);
-	enables |= 0x08;
-	pci_write_config8(dev0, 0x4a, enables);
-	
-	// Set bit 3 of 0x4f to match award (use INIT# as cpu reset)
-	enables = pci_read_config8(dev0, 0x4f);
-	enables |= 0x08;
-	pci_write_config8(dev0, 0x4f, enables);
-	
-	// Set 0x58 to 0x03 to match Award
-	pci_write_config8(dev0, 0x58, 0x03);
-	
-	// enable the ethernet/RTC
-	if(dev0) {
-		enables = pci_read_config8(dev0, 0x51);
-		enables |= 0x18; 
-		pci_write_config8(dev0, 0x51, enables);
+	struct southbridge_via_vt8231_config *conf = dev->chip_info;
+
+	if (!lpc_dev) {
+		/* the first time called, enable devices not on PCI bus
+		 * FIXME: is that device struct there yet? */
+		lpc_dev = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_8231, 0);
+		if (conf->enable_keyboard)
+			keyboard_on();
+		if (conf->enable_com_ports)
+			com_port_on();
 	}
-	
-	
-	// enable com1 and com2. 
-	if (conf->enable_com_ports) {
-		enables = pci_read_config8(dev0, 0x6e);
-		
-		/* 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_config8(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.
-		 */
-
-	}
-	// 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. 
-	enables = pci_read_config8(dev0, 0x50);
-	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_config8(dev0, 0x50, enables);
-	
-	// set default interrupt values (IDE)
-	enables = pci_read_config8(dev0, 0x4c);
-	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_config8(dev0, 0x4c, enables);
-	
-	// set up the serial port interrupts. 
-	// com2 to 3, com1 to 4
-	pci_write_config8(dev0, 0x46, 0x04);
-	pci_write_config8(dev0, 0x47, 0x03);
-	pci_write_config8(dev0, 0x6e, 0x98);
-	//
-	// Power management setup
-	//
-	// Set ACPI base address to IO 0x4000
-	pci_write_config32(devpwr, 0x48, 0x4001);
-	
-	// Enable ACPI access (and setup like award)
-	pci_write_config8(devpwr, 0x41, 0x84);
-	
-	// Set hardware monitor base address to IO 0x6000
-	pci_write_config32(devpwr, 0x70, 0x6001);
-	
-	// Enable hardware monitor (and setup like award)
-	pci_write_config8(devpwr, 0x74, 0x01);
-	
-	// set IO base address to 0x5000
-	pci_write_config32(devpwr, 0x90, 0x5001);
-	
-	// Enable SMBus 
-	pci_write_config8(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.
-		
-		printk_info("%s: enabling compatibility IDE addresses\n", __FUNCTION__);
-		enables = pci_read_config8(dev1, 0x42);
-		printk_debug("enables in reg 0x42 0x%x\n", enables);
-		enables &= ~0xc0;		// compatability mode
-		pci_write_config8(dev1, 0x42, enables);
-		enables = pci_read_config8(dev1, 0x42);
-		printk_debug("enables in reg 0x42 read back as 0x%x\n", enables);
-	}
-	
-	enables = pci_read_config8(dev1, 0x40);
-	printk_debug("enables in reg 0x40 0x%x\n", enables);
-	enables |= 3;
-	pci_write_config8(dev1, 0x40, enables);
-	enables = pci_read_config8(dev1, 0x40);
-	printk_debug("enables in reg 0x40 read back as 0x%x\n", enables);
-	
-	// Enable prefetch buffers
-	enables = pci_read_config8(dev1, 0x41);
-	enables |= 0xf0;
-	pci_write_config8(dev1, 0x41, enables);
-	
-	// Lower thresholds (cause award does it)
-	enables = pci_read_config8(dev1, 0x43);
-	enables &= ~0x0f;
-	enables |=  0x05;
-	pci_write_config8(dev1, 0x43, enables);
-	
-	// PIO read prefetch counter (cause award does it)
-	pci_write_config8(dev1, 0x44, 0x18);
-	
-	// Use memory read multiple
-	pci_write_config8(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
-	enables = pci_read_config8(dev1, 0x9);
-	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_config8(dev1, 0x9, enables);
-	enables = pci_read_config8(dev1, 0x9);
-	printk_debug("enables in reg 0x9 read back as 0x%x\n", enables);
-	
-	// standard bios sets master bit. 
-	enables = pci_read_config8(dev1, 0x4);
-	printk_debug("command in reg 0x4 0x%x\n", enables);
-	enables |= 7;
-	
-	// No need for stepping - kevinh@ispiri.com
-	enables &= ~0x80;
-	
-	pci_write_config8(dev1, 0x4, enables);
-	enables = pci_read_config8(dev1, 0x4);
-	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_config32(dev1, 0x10, 0x0);
-		pci_write_config32(dev1, 0x14, 0x0);
-		pci_write_config32(dev1, 0x18, 0x0);
-		pci_write_config32(dev1, 0x1c, 0x0);
-		
-		// Force interrupts to use compat mode - just like Award bios
-		pci_write_config8(dev1, 0x3d, 00);
-		pci_write_config8(dev1, 0x3c, 0xff);
-	}
-	
-	
-	/* set up isa bus -- i/o recovery time, rom write enable, extend-ale */
-	pci_write_config8(dev0, 0x40, 0x54);
-	ethernet_fixup();
-	
-	// Start the rtc
-	rtc_init(0);
-}
-
-static void southbridge_init(struct device *dev) {
-	vt8231_init(dev->chip_info);
-	pci_routing_fixup(dev);
-}
-
-struct device_operations vt8231_dev_ops = {
-	.init = &southbridge_init,
-};
-
-static void southbridge_enable(struct device *dev)
-{
-	dev->ops = &vt8231_dev_ops;	
 }
 
 struct chip_operations southbridge_via_vt8231_ops = {
 	CHIP_NAME("VIA vt8231")
-	.enable_dev	= southbridge_enable,
+	.enable_dev	= vt8231_enable,
 };