-
-#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 "vt8235.h"
+#include <pc80/keyboard.h>
+#include <pc80/i8259.h>
#include "chip.h"
-void rtc_init(int i);
-
-void pc_keyboard_init(void);
-
-void hard_reset(void)
-{
- printk_err("NO HARD RESET ON VT8235! FIX ME!\n");
-}
-
-static void usb_on(int enable)
-{
- unsigned char regval;
-
- /* Base 8235 controller */
- device_t dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, 0);
- /* USB controller 1 */
- device_t dev1 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, 0);
- /* USB controller 2 */
- device_t dev2 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, dev1);
- /* USB controller 2 */
- device_t dev3 = dev_find_device(PCI_VENDOR_ID_VIA,
- PCI_DEVICE_ID_VIA_82C586_2, dev2);
-
- if(enable){
- if(dev0) {
- regval = pci_read_config8(dev0, 0x50);
- regval &= ~(0x36);
- pci_write_config8(dev0, 0x50, regval);
- }
-
- /* enable USB1 */
- if(dev1) {
- pci_write_config8(dev1, 0x04, 0x07);
- }
-
- /* enable USB2 */
- if(dev2) {
- pci_write_config8(dev2, 0x04, 0x07);
- }
-
- /* enable USB3 */
- if(dev3) {
- pci_write_config8(dev3, 0x04, 0x07);
- }
-
- }else{
- if(dev0) {
- regval = pci_read_config8(dev0, 0x50);
- regval |= 0x36;
- pci_write_config8(dev0, 0x50, regval);
- }
-
- /* disable USB1 */
- if(dev1) {
- pci_write_config8(dev1, 0x3c, 0x00);
- pci_write_config8(dev1, 0x04, 0x00);
- }
-
- /* disable USB2 */
- if(dev2) {
- pci_write_config8(dev2, 0x3c, 0x00);
- pci_write_config8(dev2, 0x04, 0x00);
- }
-
- /* disable USB3 */
- if(dev3) {
- pci_write_config8(dev3, 0x3c, 0x00);
- pci_write_config8(dev3, 0x04, 0x00);
- }
- }
-}
-
-static void keyboard_on(void)
-{
- unsigned char regval;
-
- /* Base 8235 controller */
- device_t dev0 = dev_find_device(PCI_VENDOR_ID_VIA, \
- PCI_DEVICE_ID_VIA_8235, 0);
-
- if (dev0) {
- regval = pci_read_config8(dev0, 0x51);
-// regval |= 0x0f;
- /* !!!FIX let's try this */
- regval |= 0x1d;
- pci_write_config8(dev0, 0x51, regval);
- }
- pc_keyboard_init();
-}
-
-static void nvram_on(void)
-{
- /*
- * the VIA 8235 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)
+ * Base VT8235.
*/
-static void ethernet_fixup()
-{
- device_t edev;
- uint8_t byte;
+static int enabled = 0;
- 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 vt8235_pci_enable(struct southbridge_via_vt8235_config *conf)
+void hard_reset(void)
{
- /*
- unsigned long busdevfn = 0x8000;
- if (conf->enable_ide) {
- printk_debug("%s: enabling IDE function\n", __FUNCTION__);
- }
- */
+ printk(BIOS_ERR, "NO HARD RESET ON VT8235! FIX ME!\n");
}
-/* PIRQ init
- */
-void pci_assign_irqs(unsigned bus, unsigned slot, const unsigned char pIntAtoD[4]);
-
-/* taken some liberties - changed irq structures to pins numbers so that it is easier to
- * change PCI irq assignments without having to change each PCI function individually
- */
-
-/* pciIrqs contains the irqs assigned for PCI pins A-D */
-/* setting will depend on motherboard as irqs can be quite scarce */
-/* e.g on EPIA-MII, 16 bit CF card wants a dedicated IRQ. A 16 bit card in pcmcia socket */
-/* may want another - for now only claim 3 interupts for PCI, leaving at least one spare */
-/* for CF. */
-/* On EPIA-M one could allocated all four irqs to different numbers since there are no cardbus */
-/* devices */
-
-
-static const unsigned char pciIrqs[4] = { 5 , 9 , 9, 10 };
-
-static const unsigned char usbPins[4] = { 'A','B','C','D'};
-static const unsigned char enetPins[4] = { 'A','B','C','D'};
-static const unsigned char slotPins[4] = { 'B','C','D','A'};
-static const unsigned char firewirePins[4] = { 'B','C','D','A'};
-static const unsigned char vt8235Pins[4] = { 'A','B','C','D'};
-static const unsigned char vgaPins[4] = { 'A','B','C','D'};
-static const unsigned char cbPins[4] = { 'A','B','C','D'};
-static const unsigned char riserPins[4] = { 'A','B','C','D'};
-/*
- Our IDSEL mappings are as follows
- PCI slot is AD31 (device 15) (00:14.0)
- Southbridge is AD28 (device 12) (00:11.0)
-*/
-static unsigned char *pin_to_irq(const unsigned char *pin)
+static void keyboard_on(struct device *dev)
{
- static unsigned char Irqs[4];
- int i;
- for (i = 0 ; i < 4 ; i++)
- Irqs[i] = pciIrqs[ pin[i] - 'A' ];
-
- return Irqs;
-}
-static void pci_routing_fixup(void)
-{
- device_t dev;
-
- dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, 0);
- 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, pciIrqs[0] << 4);
- pci_write_config8(dev, 0x56, pciIrqs[1] | (pciIrqs[2] << 4) );
- pci_write_config8(dev, 0x57, pciIrqs[3] << 4);
-
- }
-
-
-
- // firewire built into southbridge
- printk_info("setting firewire\n");
- pci_assign_irqs(0, 0x0d, pin_to_irq(firewirePins) );
-
- // Standard usb components
- printk_info("setting usb\n");
- pci_assign_irqs(0, 0x10, pin_to_irq(usbPins) );
-
- // VT8235 + sound hardware
- printk_info("setting vt8235\n");
- pci_assign_irqs(0, 0x11, pin_to_irq(vt8235Pins) );
-
- // Ethernet built into southbridge
- printk_info("setting ethernet\n");
- pci_assign_irqs(0, 0x12, pin_to_irq(enetPins) );
-
- // VGA
- printk_info("setting vga\n");
- pci_assign_irqs(1, 0x00, pin_to_irq(vgaPins) );
-
- // PCI slot
- printk_info("setting pci slot\n");
- pci_assign_irqs(0, 0x14, pin_to_irq(slotPins) );
-
- // Cardbus slot
- printk_info("setting cardbus slot\n");
- pci_assign_irqs(0, 0x0a, pin_to_irq(cbPins) );
-
- // Via 2 slot riser card 2nd slot
- printk_info("setting riser slot\n");
- pci_assign_irqs(0, 0x13, pin_to_irq(riserPins) );
+ unsigned char regval;
+ regval = pci_read_config8(dev, 0x51);
+ regval |= 0x05;
+ regval &= 0xfd;
+ pci_write_config8(dev, 0x51, regval);
+ pc_keyboard_init(0);
}
-
-void
-dump_south(void)
+void dump_south(device_t dev0)
{
- device_t dev0;
- dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, 0);
int i,j;
for(i = 0; i < 256; i += 16) {
- printk_debug("0x%x: ", i);
+ printk(BIOS_DEBUG, "0x%x: ", i);
for(j = 0; j < 16; j++) {
- printk_debug("%02x ", pci_read_config8(dev0, i+j));
+ printk(BIOS_DEBUG, "%02x ", pci_read_config8(dev0, i+j));
}
- printk_debug("\n");
+ printk(BIOS_DEBUG, "\n");
}
}
-void set_led(void)
+void set_led()
{
-
// set power led to steady now that lxbios has virtually done its job
- device_t dev0;
- dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235,0);
-
- pci_write_config8(dev0,0x94,0xb0);
-
+ device_t dev;
+ dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, 0);
+ pci_write_config8(dev, 0x94, 0xb0);
}
-/* set up the power management capabilities directly into ACPI mode */
-/* this avoids having to handle any System Management Interrupts (SMI's) which I can't */
-/* figure out how to do !!!! */
-
-void setup_pm(device_t dev0)
-{
-
- // Set gen config 0
- pci_write_config8(dev0,0x80,0x20);
- // Set ACPI base address to IO 0x4000
- pci_write_config16(dev0, 0x88, 0x0401);
-
- // set ACPI irq to 5
- pci_write_config8(dev0,0x82,0x55);
-
- // primary interupt channel
- pci_write_config16(dev0,0x84,0x30f2);
-
- // throttle / stop clock control
- pci_write_config8(dev0,0x8d,0x18);
-
- pci_write_config8(dev0,0x93,0x88);
- //pci_write_config8(dev0,0x94,0xb0);
- pci_write_config8(dev0,0x95,0xc0);
- pci_write_config8(dev0,0x98,0);
- pci_write_config8(dev0,0x99,0xea);
- pci_write_config8(dev0,0xe4,0x14);
- pci_write_config8(dev0,0xe5,0x08);
-
-
- // Enable ACPI access (and setup like award)
- pci_write_config8(dev0, 0x81, 0x84);
-
- outw(0xffff,0x400);
- outw(0xffff,0x420);
- outw(0xffff,0x428);
- outl(0xffffffff,0x430);
-
- outw(0x0,0x424);
- outw(0x0,0x42a);
- outw(0x1,0x42c);
- outl(0x0,0x434);
- outl(0x01,0x438);
- outb(0x0,0x442);
- outl(0xffff7fff,0x448);
- outw(0x001,0x404);
-
-
-}
-
-static void vt8235_init(struct southbridge_via_vt8235_config *conf)
+static void vt8235_enable(struct device *dev)
{
- unsigned char enables;
- device_t dev0;
- device_t dev1;
- //device_t devpwr;
- //int i;
-
- // to do: use the pcibios_find function here, instead of
- // hard coding the devfn.
- // done - kevinh/Ispiri
- printk_debug("vt8235 init\n");
- /* Base 8235 controller */
- dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, 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_8235_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);
- enables |= 0x45;
- 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 0x58 to 0x03 to match Award */
- pci_write_config8(dev0, 0x58, 0x03);
-
- /* 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 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);
- }
-
-
- /* enable serial irq */
- pci_write_config8(dev0,0x52,0x9);
-
- /* dma */
- pci_write_config8(dev0, 0x53, 0x00);
+ struct southbridge_via_vt8235_config *conf = dev->chip_info;
+ unsigned char regval;
+ unsigned short vendor,model;
- /* 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);
+ vendor = pci_read_config16(dev,0);
+ model = pci_read_config16(dev,0x2);
- // Power management setup
- setup_pm(dev0);
-
- //
- //
- // 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);
+ printk(BIOS_DEBUG, "In vt8235_enable %04x %04x.\n",vendor,model);
- // 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);
+ /* if this is not the southbridge itself just return */
+ /* this is necessary because USB devices are slot 10, whereas this device is slot 11
+ therefore usb devices get called first during the bus scan */
+ if( (vendor != PCI_VENDOR_ID_VIA) || (model != PCI_DEVICE_ID_VIA_8235))
+ return;
-}
+ printk(BIOS_DEBUG, "Initialising Devices\n");
-static void southbridge_init(struct chip *chip, enum chip_pass pass)
-{
- struct southbridge_via_vt8235_config *conf =
- (struct southbridge_via_vt8235_config *)chip->chip_info;
+ setup_i8259(); // make sure interupt controller is configured before keyboard init
- switch (pass) {
- case CONF_PASS_PRE_PCI:
- vt8235_pci_enable(conf);
- break;
-
- case CONF_PASS_POST_PCI:
- /* initialise the PIC - particularly so that VGA bios init code
- doesn't get nasty unknown interupt vectors when it tries to establish
- its interrupts. */
- setup_i8259();
- vt8235_init(conf);
- pci_routing_fixup();
- usb_on(1);
- keyboard_on();
- vga_fixup();
+ /* enable RTC and ethernet */
+ regval = pci_read_config8(dev, 0x51);
+ regval |= 0x18;
+ pci_write_config8(dev, 0x51, regval);
+ /* turn on keyboard */
+ keyboard_on(dev);
+ /* enable USB 1.1 & USB 2.0 -redundant really since we've already been there - see note above*/
+ regval = pci_read_config8(dev, 0x50);
+ regval &= ~(0x36);
+ pci_write_config8(dev, 0x50, regval);
- break;
- case CONF_PASS_PRE_BOOT:
- dump_south();
- set_led();
- break;
-
- default:
- /* nothing yet */
- break;
- }
}
-struct chip_operations southbridge_via_vt8235_control = {
- CHIP_NAME("VIA vt8235")
- .enable = southbridge_init,
+struct chip_operations southbridge_via_vt8235_ops = {
+ CHIP_NAME("VIA VT8235 Southbridge")
+ .enable_dev = vt8235_enable,
};
projects / coreboot.git / blobdiff