| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <commonlib/endian.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <string.h> |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <acpi/acpigen.h> |
| |
| /* Rmodules don't like weak symbols. */ |
| u32 __weak map_oprom_vendev(u32 vendev) { return vendev; } |
| |
| void vga_oprom_preload(void) |
| { |
| /* The CONFIG_VGA_BIOS_ID symbol is only defined when VGA_BIOS is selected */ |
| #if CONFIG(VGA_BIOS) |
| const char name[] = "pci" CONFIG_VGA_BIOS_ID ".rom"; |
| |
| if (!CONFIG(CBFS_PRELOAD)) |
| return; |
| |
| printk(BIOS_DEBUG, "Preloading VGA ROM %s\n", name); |
| |
| cbfs_preload(name); |
| #endif |
| } |
| |
| static void *cbfs_boot_map_optionrom(uint16_t vendor, uint16_t device) |
| { |
| char name[17] = "pciXXXX,XXXX.rom"; |
| |
| snprintf(name, sizeof(name), "pci%04hx,%04hx.rom", vendor, device); |
| |
| return cbfs_map(name, NULL); |
| } |
| |
| struct rom_header *pci_rom_probe(const struct device *dev) |
| { |
| struct rom_header *rom_header = NULL; |
| struct pci_data *rom_data; |
| u32 vendev = (dev->vendor << 16) | dev->device; |
| u32 mapped_vendev = vendev; |
| |
| /* If the ROM is in flash, then don't check the PCI device for it. */ |
| mapped_vendev = map_oprom_vendev(vendev); |
| rom_header = cbfs_boot_map_optionrom(mapped_vendev >> 16, mapped_vendev & 0xffff); |
| |
| /* Handle the case of VGA_BIOS_ID not being set to the remapped PCI ID. This is a |
| workaround that should be removed once the underlying issue is fixed. */ |
| if (!rom_header && vendev != mapped_vendev) { |
| rom_header = cbfs_boot_map_optionrom(vendev >> 16, vendev & 0xffff); |
| if (rom_header) { |
| printk(BIOS_NOTICE, "VGA_BIOS_ID should be the remapped PCI ID " |
| "%04hx,%04hx in the VBIOS file\n", |
| mapped_vendev >> 16, mapped_vendev & 0xffff); |
| } |
| } |
| |
| if (rom_header) { |
| printk(BIOS_DEBUG, "In CBFS, ROM address for %s = %p\n", |
| dev_path(dev), rom_header); |
| } else if (CONFIG(ON_DEVICE_ROM_LOAD)) { |
| uintptr_t rom_address; |
| |
| rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); |
| |
| if (rom_address == 0x00000000 || rom_address == 0xffffffff) { |
| if (CONFIG(CPU_QEMU_X86) && (dev->class >> 8) == PCI_CLASS_DISPLAY_VGA) |
| rom_address = 0xc0000; |
| else |
| return NULL; |
| } else { |
| /* Enable expansion ROM address decoding. */ |
| pci_write_config32(dev, PCI_ROM_ADDRESS, |
| rom_address|PCI_ROM_ADDRESS_ENABLE); |
| } |
| |
| rom_address &= PCI_ROM_ADDRESS_MASK; |
| |
| printk(BIOS_DEBUG, "Option ROM address for %s = %lx\n", |
| dev_path(dev), (unsigned long)rom_address); |
| rom_header = (struct rom_header *)rom_address; |
| } else { |
| printk(BIOS_DEBUG, "PCI Option ROM loading disabled for %s\n", |
| dev_path(dev)); |
| return NULL; |
| } |
| |
| printk(BIOS_SPEW, |
| "PCI expansion ROM, signature 0x%04x, INIT size 0x%04x, data ptr 0x%04x\n", |
| le32_to_cpu(rom_header->signature), |
| rom_header->size * 512, le32_to_cpu(rom_header->data)); |
| |
| if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) { |
| printk(BIOS_ERR, "Incorrect expansion ROM header signature %04x\n", |
| le32_to_cpu(rom_header->signature)); |
| return NULL; |
| } |
| |
| rom_data = (((void *)rom_header) + le32_to_cpu(rom_header->data)); |
| |
| printk(BIOS_SPEW, "PCI ROM image, vendor ID %04x, device ID %04x,\n", |
| rom_data->vendor, rom_data->device); |
| /* If the device id is mapped, a mismatch is expected */ |
| if ((dev->vendor != rom_data->vendor |
| || dev->device != rom_data->device) |
| && (vendev == mapped_vendev)) { |
| printk(BIOS_ERR, "ID mismatch: vendor ID %04x, device ID %04x\n", |
| dev->vendor, dev->device); |
| return NULL; |
| } |
| |
| printk(BIOS_SPEW, "PCI ROM image, Class Code %04x%02x, Code Type %02x\n", |
| rom_data->class_hi, rom_data->class_lo, |
| rom_data->type); |
| |
| if (dev->class != ((rom_data->class_hi << 8) | rom_data->class_lo)) { |
| printk(BIOS_DEBUG, "Class Code mismatch ROM %08x, dev %08x\n", |
| (rom_data->class_hi << 8) | rom_data->class_lo, |
| dev->class); |
| // return NULL; |
| } |
| |
| return rom_header; |
| } |
| |
| static void *pci_ram_image_start = (void *)PCI_RAM_IMAGE_START; |
| |
| struct rom_header *pci_rom_load(struct device *dev, |
| struct rom_header *rom_header) |
| { |
| struct pci_data * rom_data; |
| unsigned int rom_size; |
| unsigned int image_size=0; |
| |
| do { |
| /* Get next image. */ |
| rom_header = (struct rom_header *)((void *)rom_header |
| + image_size); |
| |
| rom_data = (struct pci_data *)((void *)rom_header |
| + le32_to_cpu(rom_header->data)); |
| |
| image_size = le32_to_cpu(rom_data->ilen) * 512; |
| } while ((rom_data->type != 0) && (rom_data->indicator != 0)); // make sure we got x86 version |
| |
| if (rom_data->type != 0) |
| return NULL; |
| |
| rom_size = rom_header->size * 512; |
| |
| /* |
| * We check to see if the device thinks it is a VGA device not |
| * whether the ROM image is for a VGA device because some |
| * devices have a mismatch between the hardware and the ROM. |
| */ |
| if ((dev->class >> 8) == PCI_CLASS_DISPLAY_VGA) { |
| extern struct device *vga_pri; /* Primary VGA device (device.c). */ |
| if (dev != vga_pri) return NULL; /* Only one VGA supported. */ |
| if ((void *)PCI_VGA_RAM_IMAGE_START != rom_header) { |
| printk(BIOS_DEBUG, |
| "Copying VGA ROM Image from %p to 0x%x, 0x%x bytes\n", |
| rom_header, PCI_VGA_RAM_IMAGE_START, rom_size); |
| memcpy((void *)PCI_VGA_RAM_IMAGE_START, rom_header, |
| rom_size); |
| } |
| return (struct rom_header *)(PCI_VGA_RAM_IMAGE_START); |
| } |
| |
| printk(BIOS_DEBUG, "Copying non-VGA ROM image from %p to %p, 0x%x bytes\n", |
| rom_header, pci_ram_image_start, rom_size); |
| |
| memcpy(pci_ram_image_start, rom_header, rom_size); |
| pci_ram_image_start += rom_size; |
| return (struct rom_header *)(pci_ram_image_start-rom_size); |
| } |
| |
| /* ACPI */ |
| #if CONFIG(HAVE_ACPI_TABLES) |
| |
| /* VBIOS may be modified after oprom init so use the copy if present. */ |
| static struct rom_header *check_initialized(const struct device *dev) |
| { |
| struct rom_header *run_rom; |
| struct pci_data *rom_data; |
| |
| if (!CONFIG(VGA_ROM_RUN) && !CONFIG(RUN_FSP_GOP)) |
| return NULL; |
| |
| run_rom = (struct rom_header *)(uintptr_t)PCI_VGA_RAM_IMAGE_START; |
| if (read_le16(&run_rom->signature) != PCI_ROM_HDR) |
| return NULL; |
| |
| rom_data = (struct pci_data *)((u8 *)run_rom |
| + read_le16(&run_rom->data)); |
| |
| if (read_le32(&rom_data->signature) == PCI_DATA_HDR |
| && read_le16(&rom_data->device) == dev->device |
| && read_le16(&rom_data->vendor) == dev->vendor) |
| return run_rom; |
| else |
| return NULL; |
| } |
| |
| static unsigned long |
| ati_rom_acpi_fill_vfct(const struct device *device, acpi_vfct_t *vfct_struct, |
| unsigned long current) |
| { |
| acpi_vfct_image_hdr_t *header = &vfct_struct->image_hdr; |
| struct rom_header *rom; |
| |
| rom = check_initialized(device); |
| if (!rom) |
| rom = pci_rom_probe(device); |
| if (!rom) { |
| printk(BIOS_ERR, "%s failed\n", __func__); |
| return current; |
| } |
| if (device->upstream->segment_group) { |
| printk(BIOS_ERR, "VFCT only supports GPU in first PCI segment group.\n"); |
| return current; |
| } |
| |
| printk(BIOS_DEBUG, " Copying %sVBIOS image from %p\n", |
| rom == (struct rom_header *) |
| (uintptr_t)PCI_VGA_RAM_IMAGE_START ? |
| "initialized " : "", |
| rom); |
| |
| header->DeviceID = device->device; |
| header->VendorID = device->vendor; |
| header->PCIBus = device->upstream->secondary; |
| header->PCIFunction = PCI_FUNC(device->path.pci.devfn); |
| header->PCIDevice = PCI_SLOT(device->path.pci.devfn); |
| header->ImageLength = rom->size * 512; |
| memcpy((void *)header->VbiosContent, rom, header->ImageLength); |
| |
| vfct_struct->VBIOSImageOffset = (size_t)header - (size_t)vfct_struct; |
| |
| /* Calculate and set checksum for VBIOS data if FSP GOP driver used, |
| Since GOP driver modifies ATOMBIOS tables at end of VBIOS */ |
| if (CONFIG(RUN_FSP_GOP)) { |
| /* Clear existing checksum before recalculating */ |
| header->VbiosContent[VFCT_VBIOS_CHECKSUM_OFFSET] = 0; |
| header->VbiosContent[VFCT_VBIOS_CHECKSUM_OFFSET] = |
| acpi_checksum(header->VbiosContent, header->ImageLength); |
| } |
| |
| current += header->ImageLength; |
| return current; |
| } |
| |
| unsigned long |
| pci_rom_write_acpi_tables(const struct device *device, unsigned long current, |
| struct acpi_rsdp *rsdp) |
| { |
| /* Only handle VGA devices */ |
| if ((device->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
| return current; |
| |
| /* Only handle enabled devices */ |
| if (!device->enabled) |
| return current; |
| |
| /* AMD/ATI uses VFCT */ |
| if (device->vendor == PCI_VID_ATI) { |
| acpi_vfct_t *vfct; |
| |
| current = ALIGN_UP(current, 8); |
| vfct = (acpi_vfct_t *)current; |
| acpi_create_vfct(device, vfct, ati_rom_acpi_fill_vfct); |
| if (vfct->header.length) { |
| printk(BIOS_DEBUG, "ACPI: * VFCT at %lx\n", current); |
| current += vfct->header.length; |
| acpi_add_table(rsdp, vfct); |
| } |
| } |
| |
| return current; |
| } |
| |
| void pci_rom_ssdt(const struct device *device) |
| { |
| static size_t ngfx; |
| |
| /* Only handle display devices */ |
| if ((device->class >> 16) != PCI_BASE_CLASS_DISPLAY) |
| return; |
| |
| /* Only handle enabled devices */ |
| if (!device->enabled) |
| return; |
| |
| /* Probe for option rom */ |
| const struct rom_header *rom = pci_rom_probe(device); |
| if (!rom || !rom->size) { |
| printk(BIOS_WARNING, "%s: Missing PCI Option ROM\n", |
| dev_path(device)); |
| return; |
| } |
| |
| const char *scope = acpi_device_path(device); |
| if (!scope) { |
| printk(BIOS_ERR, "%s: Missing ACPI scope\n", dev_path(device)); |
| return; |
| } |
| |
| /* Supports up to four devices. */ |
| if ((CBMEM_ID_ROM0 + ngfx) > CBMEM_ID_ROM3) { |
| printk(BIOS_ERR, "%s: Out of CBMEM IDs.\n", dev_path(device)); |
| return; |
| } |
| |
| /* Prepare memory */ |
| const size_t cbrom_length = rom->size * 512; |
| if (!cbrom_length) { |
| printk(BIOS_ERR, "%s: ROM has zero length!\n", |
| dev_path(device)); |
| return; |
| } |
| |
| void *cbrom = cbmem_add(CBMEM_ID_ROM0 + ngfx, cbrom_length); |
| if (!cbrom) { |
| printk(BIOS_ERR, "%s: Failed to allocate CBMEM.\n", |
| dev_path(device)); |
| return; |
| } |
| /* Increment CBMEM id for next device */ |
| ngfx++; |
| |
| memcpy(cbrom, rom, cbrom_length); |
| |
| /* write _ROM method */ |
| acpigen_write_scope(scope); |
| acpigen_write_rom(cbrom, cbrom_length); |
| acpigen_pop_len(); /* pop scope */ |
| } |
| #endif |