*/
#include <common.h>
+#include <dm.h>
#include <asm/msr.h>
#include <asm/acpi.h>
#include <asm/cpu.h>
static const int legacy_hole_base_k = 0xa0000 / 1024;
static const int legacy_hole_size_k = 384;
-static int get_pcie_bar(u32 *base, u32 *len)
+static int get_pcie_bar(struct udevice *dev, u32 *base, u32 *len)
{
- pci_dev_t dev = PCI_BDF(0, 0, 0);
u32 pciexbar_reg;
*base = 0;
*len = 0;
- pciexbar_reg = x86_pci_read_config32(dev, PCIEXBAR);
+ dm_pci_read_config32(dev, PCIEXBAR, &pciexbar_reg);
if (!(pciexbar_reg & (1 << 0)))
return 0;
return 0;
}
-static void add_fixed_resources(pci_dev_t dev, int index)
+static void add_fixed_resources(struct udevice *dev, int index)
{
u32 pcie_config_base, pcie_config_size;
- if (get_pcie_bar(&pcie_config_base, &pcie_config_size)) {
+ if (get_pcie_bar(dev, &pcie_config_base, &pcie_config_size)) {
debug("Adding PCIe config bar base=0x%08x size=0x%x\n",
pcie_config_base, pcie_config_size);
}
}
-static void northbridge_dmi_init(pci_dev_t dev)
+static void northbridge_dmi_init(struct udevice *dev)
{
/* Clear error status bits */
writel(0xffffffff, DMIBAR_REG(0x1c4));
setbits_le32(DMIBAR_REG(0x88), (1 << 1) | (1 << 0));
}
-void northbridge_init(pci_dev_t dev)
+static void northbridge_init(struct udevice *dev)
{
u32 bridge_type;
writel(0x00100001, MCHBAR_REG(0x5500));
}
-void northbridge_enable(pci_dev_t dev)
+static void sandybridge_setup_northbridge_bars(struct udevice *dev)
{
+ /* Set up all hardcoded northbridge BARs */
+ debug("Setting up static registers\n");
+ dm_pci_write_config32(dev, EPBAR, DEFAULT_EPBAR | 1);
+ dm_pci_write_config32(dev, EPBAR + 4, (0LL + DEFAULT_EPBAR) >> 32);
+ dm_pci_write_config32(dev, MCHBAR, DEFAULT_MCHBAR | 1);
+ dm_pci_write_config32(dev, MCHBAR + 4, (0LL + DEFAULT_MCHBAR) >> 32);
+ /* 64MB - busses 0-63 */
+ dm_pci_write_config32(dev, PCIEXBAR, DEFAULT_PCIEXBAR | 5);
+ dm_pci_write_config32(dev, PCIEXBAR + 4,
+ (0LL + DEFAULT_PCIEXBAR) >> 32);
+ dm_pci_write_config32(dev, DMIBAR, DEFAULT_DMIBAR | 1);
+ dm_pci_write_config32(dev, DMIBAR + 4, (0LL + DEFAULT_DMIBAR) >> 32);
+
+ /* Set C0000-FFFFF to access RAM on both reads and writes */
+ dm_pci_write_config8(dev, PAM0, 0x30);
+ dm_pci_write_config8(dev, PAM1, 0x33);
+ dm_pci_write_config8(dev, PAM2, 0x33);
+ dm_pci_write_config8(dev, PAM3, 0x33);
+ dm_pci_write_config8(dev, PAM4, 0x33);
+ dm_pci_write_config8(dev, PAM5, 0x33);
+ dm_pci_write_config8(dev, PAM6, 0x33);
}
+
+static int bd82x6x_northbridge_early_init(struct udevice *dev)
+{
+ const int chipset_type = SANDYBRIDGE_MOBILE;
+ u32 capid0_a;
+ u8 reg8;
+
+ /* Device ID Override Enable should be done very early */
+ dm_pci_read_config32(dev, 0xe4, &capid0_a);
+ if (capid0_a & (1 << 10)) {
+ dm_pci_read_config8(dev, 0xf3, ®8);
+ reg8 &= ~7; /* Clear 2:0 */
+
+ if (chipset_type == SANDYBRIDGE_MOBILE)
+ reg8 |= 1; /* Set bit 0 */
+
+ dm_pci_write_config8(dev, 0xf3, reg8);
+ }
+
+ sandybridge_setup_northbridge_bars(dev);
+
+ /* Device Enable */
+ dm_pci_write_config32(dev, DEVEN, DEVEN_HOST | DEVEN_IGD);
+
+ return 0;
+}
+
+static int bd82x6x_northbridge_probe(struct udevice *dev)
+{
+ if (!(gd->flags & GD_FLG_RELOC))
+ return bd82x6x_northbridge_early_init(dev);
+
+ northbridge_init(dev);
+
+ return 0;
+}
+
+static const struct udevice_id bd82x6x_northbridge_ids[] = {
+ { .compatible = "intel,bd82x6x-northbridge" },
+ { }
+};
+
+U_BOOT_DRIVER(bd82x6x_northbridge_drv) = {
+ .name = "bd82x6x_northbridge",
+ .id = UCLASS_NORTHBRIDGE,
+ .of_match = bd82x6x_northbridge_ids,
+ .probe = bd82x6x_northbridge_probe,
+};