diff options
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/i3100/northbridge.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/northbridge/intel/i3100/northbridge.c b/src/northbridge/intel/i3100/northbridge.c index dcce48d334..589c9c546d 100644 --- a/src/northbridge/intel/i3100/northbridge.c +++ b/src/northbridge/intel/i3100/northbridge.c @@ -33,6 +33,7 @@ #include <cpu/cpu.h> #include "chip.h" #include "i3100.h" +#include <arch/acpi.h> static u32 max_bus; @@ -175,6 +176,30 @@ static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device) ((device & 0xffff) << 16) | (vendor & 0xffff)); } +#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) + +unsigned long acpi_fill_mcfg(unsigned long current) +{ + device_t dev; + u64 mmcfg; + + dev = dev_find_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_3100_MC, 0); // 0:0x13.0 + if (!dev) + return current; + + // MMCFG not supported or not enabled. + mmcfg = ((u64) pci_read_config16(dev, 0xce)) << 16; + if (!mmcfg) + return current; + + current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, + mmcfg, 0x0, 0x0, 0xff); + + return current; +} + +#endif + static struct pci_operations intel_pci_ops = { .set_subsystem = intel_set_subsystem, }; |