summaryrefslogtreecommitdiff
path: root/src/southbridge/via
diff options
context:
space:
mode:
Diffstat (limited to 'src/southbridge/via')
-rw-r--r--src/southbridge/via/vt8231/vt8231_acpi.c44
-rw-r--r--src/southbridge/via/vt8231/vt8231_ide.c108
-rw-r--r--src/southbridge/via/vt8231/vt8231_lpc.c154
-rw-r--r--src/southbridge/via/vt8231/vt8231_nic.c37
-rw-r--r--src/southbridge/via/vt8231/vt8231_usb.c52
5 files changed, 395 insertions, 0 deletions
diff --git a/src/southbridge/via/vt8231/vt8231_acpi.c b/src/southbridge/via/vt8231/vt8231_acpi.c
new file mode 100644
index 0000000000..40f47b8367
--- /dev/null
+++ b/src/southbridge/via/vt8231/vt8231_acpi.c
@@ -0,0 +1,44 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include "vt8231.h"
+
+static void acpi_init(struct device *dev)
+{
+ printk_debug("Configuring VIA ACPI\n");
+
+ // Set ACPI base address to IO 0x4000
+ pci_write_config32(dev, 0x48, 0x4001);
+
+ // Enable ACPI access (and setup like award)
+ pci_write_config8(dev, 0x41, 0x84);
+
+ // Set hardware monitor base address to IO 0x6000
+ pci_write_config32(dev, 0x70, 0x6001);
+
+ // Enable hardware monitor (and setup like award)
+ pci_write_config8(dev, 0x74, 0x01);
+
+ // set IO base address to 0x5000
+ pci_write_config32(dev, 0x90, 0x5001);
+
+ // Enable SMBus
+ pci_write_config8(dev, 0xd2, 0x01);
+}
+
+static struct device_operations acpi_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = acpi_init,
+ .enable = 0,
+ .ops_pci = 0,
+};
+
+static struct pci_driver northbridge_driver __pci_driver = {
+ .ops = &acpi_ops,
+ .vendor = PCI_VENDOR_ID_VIA,
+ .device = PCI_DEVICE_ID_VIA_8231_4,
+};
diff --git a/src/southbridge/via/vt8231/vt8231_ide.c b/src/southbridge/via/vt8231/vt8231_ide.c
new file mode 100644
index 0000000000..70f256990c
--- /dev/null
+++ b/src/southbridge/via/vt8231/vt8231_ide.c
@@ -0,0 +1,108 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include "vt8231.h"
+#include "chip.h"
+
+static void ide_init(struct device *dev)
+{
+ struct southbridge_via_vt8231_config *conf;
+ unsigned char enables;
+
+ 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(dev, 0x42);
+ printk_debug("enables in reg 0x42 0x%x\n", enables);
+ enables &= ~0xc0; // compatability mode
+ pci_write_config8(dev, 0x42, enables);
+ enables = pci_read_config8(dev, 0x42);
+ printk_debug("enables in reg 0x42 read back as 0x%x\n", enables);
+ }
+
+ enables = pci_read_config8(dev, 0x40);
+ printk_debug("enables in reg 0x40 0x%x\n", enables);
+ enables |= 3;
+ pci_write_config8(dev, 0x40, enables);
+ enables = pci_read_config8(dev, 0x40);
+ printk_debug("enables in reg 0x40 read back as 0x%x\n", enables);
+
+ // Enable prefetch buffers
+ enables = pci_read_config8(dev, 0x41);
+ enables |= 0xf0;
+ pci_write_config8(dev, 0x41, enables);
+
+ // Lower thresholds (cause award does it)
+ enables = pci_read_config8(dev, 0x43);
+ enables &= ~0x0f;
+ enables |= 0x05;
+ pci_write_config8(dev, 0x43, enables);
+
+ // PIO read prefetch counter (cause award does it)
+ pci_write_config8(dev, 0x44, 0x18);
+
+ // Use memory read multiple
+ pci_write_config8(dev, 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(dev, 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(dev, 0x9, enables);
+ enables = pci_read_config8(dev, 0x9);
+ printk_debug("enables in reg 0x9 read back as 0x%x\n", enables);
+
+ // standard bios sets master bit.
+ enables = pci_read_config8(dev, 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(dev, 0x4, enables);
+ enables = pci_read_config8(dev, 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(dev, 0x10, 0x0);
+ pci_write_config32(dev, 0x14, 0x0);
+ pci_write_config32(dev, 0x18, 0x0);
+ pci_write_config32(dev, 0x1c, 0x0);
+
+ // Force interrupts to use compat mode - just like Award bios
+ pci_write_config8(dev, 0x3d, 00);
+ pci_write_config8(dev, 0x3c, 0xff);
+ }
+}
+
+static struct device_operations ide_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = ide_init,
+ .enable = 0,
+ .ops_pci = 0,
+};
+
+static struct pci_driver northbridge_driver __pci_driver = {
+ .ops = &ide_ops,
+ .vendor = PCI_VENDOR_ID_VIA,
+ .device = PCI_DEVICE_ID_VIA_82C586_1,
+};
diff --git a/src/southbridge/via/vt8231/vt8231_lpc.c b/src/southbridge/via/vt8231/vt8231_lpc.c
new file mode 100644
index 0000000000..9564b55ae7
--- /dev/null
+++ b/src/southbridge/via/vt8231/vt8231_lpc.c
@@ -0,0 +1,154 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+
+#include <pc80/mc146818rtc.h>
+
+#include "vt8231.h"
+#include "chip.h"
+
+/* 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__);
+}
+
+static void vt8231_init(struct device *dev)
+{
+ unsigned char enables;
+ struct southbridge_via_vt8231_config *conf = dev->chip_info;
+
+ printk_debug("vt8231 init\n");
+
+ // enable the internal I/O decode
+ enables = pci_read_config8(dev, 0x6C);
+ enables |= 0x80;
+ pci_write_config8(dev, 0x6C, enables);
+
+ // Map 4MB of FLASH into the address space
+ pci_write_config8(dev, 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(dev, 0x40);
+ pci_write_config8(dev, 0x40, enables);
+
+ // Set 0x42 to 0xf0 to match Award bios
+ enables = pci_read_config8(dev, 0x42);
+ enables |= 0xf0;
+ pci_write_config8(dev, 0x42, enables);
+
+ // Set bit 3 of 0x4a, to match award (dummy pci request)
+ enables = pci_read_config8(dev, 0x4a);
+ enables |= 0x08;
+ pci_write_config8(dev, 0x4a, enables);
+
+ // Set bit 3 of 0x4f to match award (use INIT# as cpu reset)
+ enables = pci_read_config8(dev, 0x4f);
+ enables |= 0x08;
+ pci_write_config8(dev, 0x4f, enables);
+
+ // Set 0x58 to 0x03 to match Award
+ pci_write_config8(dev, 0x58, 0x03);
+
+ // enable the ethernet/RTC
+ if (dev) {
+ enables = pci_read_config8(dev, 0x51);
+ enables |= 0x18;
+ pci_write_config8(dev, 0x51, enables);
+ }
+
+ // 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(dev, 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(dev, 0x50, enables);
+
+ // set default interrupt values (IDE)
+ enables = pci_read_config8(dev, 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(dev, 0x4c, enables);
+
+ // set up the serial port interrupts.
+ // com2 to 3, com1 to 4
+ pci_write_config8(dev, 0x46, 0x04);
+ pci_write_config8(dev, 0x47, 0x03);
+ pci_write_config8(dev, 0x6e, 0x98);
+
+ /* set up isa bus -- i/o recovery time, rom write enable, extend-ale */
+ pci_write_config8(dev, 0x40, 0x54);
+ //ethernet_fixup();
+
+ // Start the rtc
+ rtc_init(0);
+}
+
+static void southbridge_init(struct device *dev)
+{
+ vt8231_init(dev);
+ pci_routing_fixup(dev);
+}
+
+static struct device_operations vt8231_lpc_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = &southbridge_init,
+ .scan_bus = scan_static_bus,
+ .enable = 0,
+ .ops_pci = 0,
+};
+
+static struct pci_driver lpc_driver __pci_driver = {
+ .ops = &vt8231_lpc_ops,
+ .vendor = PCI_VENDOR_ID_VIA,
+ .device = PCI_DEVICE_ID_VIA_8231,
+};
diff --git a/src/southbridge/via/vt8231/vt8231_nic.c b/src/southbridge/via/vt8231/vt8231_nic.c
new file mode 100644
index 0000000000..13da26345c
--- /dev/null
+++ b/src/southbridge/via/vt8231/vt8231_nic.c
@@ -0,0 +1,37 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include "vt8231.h"
+
+/*
+ * Enable the ethernet device and turn off stepping (because it is integrated
+ * inside the southbridge)
+ */
+static void nic_init(struct device *dev)
+{
+ uint8_t byte;
+
+ printk_debug("Configuring VIA LAN\n");
+
+ /* We don't need stepping - though the device supports it */
+ byte = pci_read_config8(dev, PCI_COMMAND);
+ byte &= ~PCI_COMMAND_WAIT;
+ pci_write_config8(dev, PCI_COMMAND, byte);
+}
+
+static struct device_operations nic_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = nic_init,
+ .enable = 0,
+ .ops_pci = 0,
+};
+
+static struct pci_driver northbridge_driver __pci_driver = {
+ .ops = &nic_ops,
+ .vendor = PCI_VENDOR_ID_VIA,
+ .device = PCI_DEVICE_ID_VIA_8233_7,
+};
diff --git a/src/southbridge/via/vt8231/vt8231_usb.c b/src/southbridge/via/vt8231/vt8231_usb.c
new file mode 100644
index 0000000000..3dd0b4272b
--- /dev/null
+++ b/src/southbridge/via/vt8231/vt8231_usb.c
@@ -0,0 +1,52 @@
+
+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);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 09:10:49 +0000