| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cbmem.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <soc/iomap.h> |
| #include <soc/ramstage.h> |
| |
| static void nc_read_resources(struct device *dev) |
| { |
| int index = 0; |
| |
| /* Read standard PCI resources. */ |
| pci_dev_read_resources(dev); |
| |
| /* 0 -> 0xa0000 */ |
| ram_from_to(dev, index++, 0, 0xa0000); |
| |
| /* |
| * Reserve everything between A segment and 1MB: |
| * |
| * 0xa0000 - 0xbffff: legacy VGA |
| * 0xc0000 - 0xdffff: RAM |
| * 0xe0000 - 0xfffff: ROM shadow |
| */ |
| mmio_from_to(dev, index++, 0xa0000, 0xc0000); |
| |
| reserved_ram_from_to(dev, index++, 0xc0000, 1 * MiB); |
| |
| /* 0x100000 -> cbmem_top - cacheable and usable */ |
| ram_from_to(dev, index++, 1 * MiB, (uintptr_t)cbmem_top()); |
| |
| /* cbmem_top -> 0xc0000000 - reserved */ |
| reserved_ram_from_to(dev, index++, (uintptr_t)cbmem_top(), 0xc0000000); |
| |
| /* 0xc0000000 -> 4GiB is mmio. */ |
| mmio_from_to(dev, index++, 0xc0000000, 4ull * GiB); |
| } |
| |
| static struct device_operations nc_ops = { |
| .read_resources = nc_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| }; |
| |
| static const struct pci_driver systemagent_driver __pci_driver = { |
| .ops = &nc_ops, |
| .vendor = PCI_VID_INTEL, |
| .device = QUARK_MC_DEVICE_ID |
| }; |