| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ops.h> |
| #include <pc80/keyboard.h> |
| #include <cpu/x86/smm.h> |
| |
| #include "q35.h" |
| |
| static const unsigned char qemu_q35_irqs[] = { |
| 10, 10, 11, 11, |
| 10, 10, 11, 11, |
| }; |
| |
| static void qemu_nb_init(struct device *dev) |
| { |
| /* Map memory at 0xc0000 - 0xfffff */ |
| int i; |
| uint8_t v = pci_read_config8(dev, D0F0_PAM(0)); |
| v |= 0x30; |
| pci_write_config8(dev, D0F0_PAM(0), v); |
| pci_write_config8(dev, D0F0_PAM(1), 0x33); |
| pci_write_config8(dev, D0F0_PAM(2), 0x33); |
| pci_write_config8(dev, D0F0_PAM(3), 0x33); |
| pci_write_config8(dev, D0F0_PAM(4), 0x33); |
| pci_write_config8(dev, D0F0_PAM(5), 0x33); |
| pci_write_config8(dev, D0F0_PAM(6), 0x33); |
| |
| /* This sneaked in here, because Qemu does not emulate a SuperIO chip. */ |
| pc_keyboard_init(NO_AUX_DEVICE); |
| |
| /* setup IRQ routing for pci slots */ |
| for (i = 0; i < 25; i++) { |
| struct device *d = pcidev_on_root(i, 0); |
| if (d) |
| pci_assign_irqs(d, qemu_q35_irqs + (i % 4)); |
| } |
| /* setup IRQ routing southbridge devices */ |
| for (i = 25; i < 32; i++) { |
| struct device *d = pcidev_on_root(i, 0); |
| if (d) |
| pci_assign_irqs(d, qemu_q35_irqs); |
| } |
| } |
| |
| static void qemu_nb_read_resources(struct device *dev) |
| { |
| size_t tseg_size; |
| uintptr_t tseg_base; |
| |
| pci_dev_read_resources(dev); |
| |
| mmconf_resource(dev, 2); |
| |
| if (CONFIG(ARCH_RAMSTAGE_X86_64)) { |
| /* Reserve page tables in DRAM. FIXME: Remove once x86_64 page tables reside in CBMEM */ |
| reserved_ram_range(dev, 0, CONFIG_ARCH_X86_64_PGTBL_LOC, 6 * 0x1000); |
| } |
| |
| smm_region(&tseg_base, &tseg_size); |
| reserved_ram_range(dev, ESMRAMC, tseg_base, tseg_size); |
| } |
| |
| |
| static struct device_operations nb_operations = { |
| .read_resources = qemu_nb_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = qemu_nb_init, |
| }; |
| |
| static const struct pci_driver nb_driver __pci_driver = { |
| .ops = &nb_operations, |
| .vendor = 0x8086, |
| .device = 0x29c0, |
| }; |