/* * 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); if (rom_header) { printk(BIOS_DEBUG, "In cbfs, rom address for %s = %p\n", dev_path(dev), rom_header); } else { unsigned long rom_address; rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); if (rom_address == 0x00000000 || rom_address == 0xffffffff) { #if defined(CONFIG_BOARD_EMULATION_QEMU_X86) \ && 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); } printk(BIOS_DEBUG, "On card, rom address for %s = %lx\n", dev_path(dev), rom_address); rom_header = (struct rom_header *)rom_address; } 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 %04x, Device %04x,\n", rom_data->vendor, rom_data->device); if (dev->vendor != rom_data->vendor || dev->device != rom_data->device) { 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 { rom_header = (struct rom_header *)((void *) rom_header + image_size); // get next image 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_CONSOLE_VGA == 1 && CONFIG_CONSOLE_VGA_MULTI == 0 extern device_t vga_pri; // the primary vga device, defined in 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); }