| #include <console/console.h> |
| #include <arch/io.h> |
| #include <stdint.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/hypertransport.h> |
| #include <device/pci_ids.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <bitops.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/msr.h> |
| |
| /* |
| * This fixup is based on capturing values from an Award BIOS. Without |
| * this fixup the DMA write performance is awful (i.e. hdparm -t /dev/hda is 20x |
| * slower than normal, ethernet drops packets). |
| * Apparently these registers govern some sort of bus master behavior. |
| */ |
| |
| static void northbridge_init(device_t dev) |
| { |
| device_t fb_dev; |
| unsigned long fb; |
| unsigned char c; |
| |
| printk(BIOS_DEBUG, "VT8623 random fixup ...\n"); |
| pci_write_config8(dev, 0x0d, 0x08); |
| pci_write_config8(dev, 0x70, 0x82); |
| pci_write_config8(dev, 0x71, 0xc8); |
| pci_write_config8(dev, 0x72, 0x00); |
| pci_write_config8(dev, 0x73, 0x01); |
| pci_write_config8(dev, 0x74, 0x01); |
| pci_write_config8(dev, 0x75, 0x08); |
| pci_write_config8(dev, 0x76, 0x52); |
| pci_write_config8(dev, 0x13, 0xd0); |
| pci_write_config8(dev, 0x84, 0x80); |
| pci_write_config16(dev, 0x80, 0x610f); |
| pci_write_config32(dev, 0x88, 0x00000002); |
| |
| fb_dev = dev_find_device(PCI_VENDOR_ID_VIA, 0x3122, 0); |
| if (fb_dev) { |
| /* Fixup GART and framebuffer addresses properly. |
| * First setup frame buffer properly. |
| */ |
| //fb = pci_read_config32(dev, 0x10); /* Base addres of framebuffer */ |
| fb = 0xd0000000; |
| printk(BIOS_DEBUG, "Frame buffer at %8lx\n",fb); |
| |
| c = pci_read_config8(dev, 0xe1) & 0xf0; /* size of vga */ |
| c |= fb>>28; /* upper nibble of frame buffer address */ |
| c = 0xdd; |
| pci_write_config8(dev, 0xe1, c); |
| c = 0x81; /* enable framebuffer */ |
| pci_write_config8(dev, 0xe0, c); |
| pci_write_config8(dev, 0xe2, 0x42); /* 'cos award does */ |
| } |
| } |
| |
| static void nullfunc(device_t dev) |
| { |
| /* Nothing to do */ |
| } |
| |
| static struct device_operations northbridge_operations = { |
| .read_resources = nullfunc, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = northbridge_init |
| }; |
| |
| static const struct pci_driver northbridge_driver __pci_driver = { |
| .ops = &northbridge_operations, |
| .vendor = PCI_VENDOR_ID_VIA, |
| .device = PCI_DEVICE_ID_VIA_8623, |
| }; |
| |
| static void agp_init(device_t dev) |
| { |
| printk(BIOS_DEBUG, "VT8623 AGP random fixup ...\n"); |
| |
| pci_write_config8(dev, 0x3e, 0x0c); |
| pci_write_config8(dev, 0x40, 0x83); |
| pci_write_config8(dev, 0x41, 0xc5); |
| pci_write_config8(dev, 0x43, 0x44); |
| pci_write_config8(dev, 0x44, 0x34); |
| pci_write_config8(dev, 0x83, 0x02); |
| } |
| |
| static struct device_operations agp_operations = { |
| .read_resources = nullfunc, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_bus_enable_resources, |
| .init = agp_init, |
| .scan_bus = pci_scan_bridge, |
| .ops_pci = 0, |
| }; |
| |
| static const struct pci_driver agp_driver __pci_driver = { |
| .ops = &agp_operations, |
| .vendor = PCI_VENDOR_ID_VIA, |
| .device = PCI_DEVICE_ID_VIA_8633_1, |
| }; |
| |
| #if CONFIG_WRITE_HIGH_TABLES |
| #include <cbmem.h> |
| #endif |
| |
| static void pci_domain_set_resources(device_t dev) |
| { |
| static const uint8_t ramregs[] = {0x5a, 0x5b, 0x5c, 0x5d }; |
| device_t mc_dev; |
| uint32_t pci_tolm; |
| |
| printk(BIOS_SPEW, "Entering vt8623 pci_domain_set_resources.\n"); |
| |
| pci_tolm = find_pci_tolm(dev->link_list); |
| mc_dev = dev->link_list->children; |
| if (mc_dev) { |
| unsigned long tomk, tolmk; |
| unsigned char rambits; |
| int i, idx; |
| |
| for(rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) { |
| unsigned char reg; |
| reg = pci_read_config8(mc_dev, ramregs[i]); |
| /* these are ENDING addresses, not sizes. |
| * if there is memory in this slot, then reg will be > rambits. |
| * So we just take the max, that gives us total. |
| * We take the highest one to cover for once and future coreboot |
| * bugs. We warn about bugs. |
| */ |
| if (reg > rambits) |
| rambits = reg; |
| if (reg < rambits) |
| printk(BIOS_ERR, "ERROR! register 0x%x is not set!\n", |
| ramregs[i]); |
| } |
| printk(BIOS_DEBUG, "I would set ram size to 0x%x Kbytes\n", (rambits)*16*1024); |
| tomk = rambits*16*1024 - 32768; |
| /* Compute the top of Low memory */ |
| tolmk = pci_tolm >> 10; |
| if (tolmk >= tomk) { |
| /* The PCI hole does does not overlap the memory. |
| */ |
| tolmk = tomk; |
| } |
| |
| #if CONFIG_WRITE_HIGH_TABLES |
| high_tables_base = (tolmk * 1024) - HIGH_MEMORY_SIZE; |
| high_tables_size = HIGH_MEMORY_SIZE; |
| printk(BIOS_DEBUG, "tom: %lx, high_tables_base: %llx, high_tables_size: %llx\n", |
| tomk*1024, high_tables_base, high_tables_size); |
| #endif |
| |
| /* Report the memory regions */ |
| idx = 10; |
| ram_resource(dev, idx++, 0, 640); /* first 640k */ |
| ram_resource(dev, idx++, 768, tolmk - 768); /* leave a hole for vga */ |
| } |
| assign_resources(dev->link_list); |
| } |
| |
| static struct device_operations pci_domain_ops = { |
| .read_resources = pci_domain_read_resources, |
| .set_resources = pci_domain_set_resources, |
| .enable_resources = NULL, |
| .init = NULL, |
| .scan_bus = pci_domain_scan_bus, |
| }; |
| |
| static void cpu_bus_init(device_t dev) |
| { |
| initialize_cpus(dev->link_list); |
| } |
| |
| static void cpu_bus_noop(device_t dev) |
| { |
| } |
| |
| static struct device_operations cpu_bus_ops = { |
| .read_resources = cpu_bus_noop, |
| .set_resources = cpu_bus_noop, |
| .enable_resources = cpu_bus_noop, |
| .init = cpu_bus_init, |
| .scan_bus = 0, |
| }; |
| |
| static void enable_dev(struct device *dev) |
| { |
| printk(BIOS_SPEW, "In vt8623 enable_dev for device %s.\n", dev_path(dev)); |
| |
| /* Set the operations if it is a special bus type */ |
| if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) { |
| dev->ops = &pci_domain_ops; |
| pci_set_method(dev); |
| } |
| else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER) { |
| dev->ops = &cpu_bus_ops; |
| } |
| } |
| |
| struct chip_operations northbridge_via_vt8623_ops = { |
| CHIP_NAME("VIA VT8623 Northbridge") |
| .enable_dev = enable_dev, |
| }; |