diff options
Diffstat (limited to 'src/device/pci_rom.c')
| -rw-r--r-- | src/device/pci_rom.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/device/pci_rom.c b/src/device/pci_rom.c new file mode 100644 index 0000000000..fe67515936 --- /dev/null +++ b/src/device/pci_rom.c @@ -0,0 +1,174 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2005 Li-Ta Lo <ollie@lanl.gov> + * Copyright (C) 2005 Tyan + * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan) + * Copyright (C) 2005 Ronald G. Minnich <rminnich@gmail.com> + * Copyright (C) 2005-2007 Stefan Reinauer <stepan@openbios.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.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> + +struct rom_header *pci_rom_probe(struct device *dev) +{ + struct rom_header *rom_header; + struct pci_data *rom_data; + + /* If it's in FLASH, then don't check device for ROM. */ + rom_header = cbfs_load_optionrom(dev->vendor, dev->device, NULL); + + u32 vendev = (dev->vendor << 16) | dev->device; + u32 mapped_vendev = vendev; + + if (map_oprom_vendev) + mapped_vendev = map_oprom_vendev(vendev); + + if (!rom_header) { + if (vendev != mapped_vendev) { + rom_header = cbfs_load_optionrom(mapped_vendev >> 16, + mapped_vendev & 0xffff , NULL); + } + } + + if (rom_header) { + printk(BIOS_DEBUG, "In CBFS, ROM address for %s = %p\n", + dev_path(dev), rom_header); + } else { + u32 rom_address; + + rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); + + if (rom_address == 0x00000000 || rom_address == 0xffffffff) { +#if CONFIG_BOARD_EMULATION_QEMU_X86 + if ((dev->class >> 8) == PCI_CLASS_DISPLAY_VGA) + rom_address = 0xc0000; + else +#endif + return NULL; + } else { + /* Enable expansion ROM address decoding. */ + pci_write_config32(dev, PCI_ROM_ADDRESS, + rom_address|PCI_ROM_ADDRESS_ENABLE); + } + +#if CONFIG_ON_DEVICE_ROM_RUN + 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, "Option ROM execution disabled " + "for %s\n", dev_path(dev)); + return NULL; +#endif + } + + 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", rom_data->vendor, rom_data->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 (PCI_CLASS_DISPLAY_VGA == (dev->class >> 8)) { +#if !CONFIG_MULTIPLE_VGA_ADAPTERS + extern device_t vga_pri; /* Primary VGA device (device.c). */ + if (dev != vga_pri) return NULL; /* Only one VGA supported. */ +#endif + 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); +} |