| /* |
| * 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 <romfs.h> |
| |
| struct rom_header * pci_rom_probe(struct device *dev) |
| { |
| unsigned long rom_address; |
| struct rom_header *rom_header; |
| struct pci_data *rom_data; |
| |
| if (CONFIG_ROMFS) { |
| rom_address = (unsigned long) romfs_load_optionrom(dev->vendor, dev->device, NULL); |
| /* if it's in FLASH, then it's as if dev->on_mainboard was true */ |
| dev->on_mainboard = 1; |
| /* and we might as well set the address correctly */ |
| dev->rom_address = rom_address; |
| } else if (dev->on_mainboard) { |
| /* this is here as a legacy path. We hope it goes away soon. Users should not have to |
| * compute the ROM address at build time! |
| */ |
| // in case some device PCI_ROM_ADDRESS can not be set or readonly |
| rom_address = dev->rom_address; |
| } else { |
| rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); |
| } |
| |
| if (rom_address == 0x00000000 || rom_address == 0xffffffff) { |
| return NULL; |
| } |
| |
| printk_debug("rom address for %s = %lx\n", dev_path(dev), rom_address); |
| |
| if(!dev->on_mainboard) { |
| /* enable expansion ROM address decoding */ |
| pci_write_config32(dev, PCI_ROM_ADDRESS, |
| rom_address|PCI_ROM_ADDRESS_ENABLE); |
| } |
| |
| rom_header = (struct rom_header *)rom_address; |
| printk_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_err("Incorrect Expansion ROM Header Signature %04x\n", |
| le32_to_cpu(rom_header->signature)); |
| return NULL; |
| } |
| |
| rom_data = (struct pci_data *) ((void *)rom_header + le32_to_cpu(rom_header->data)); |
| printk_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_err("Device or Vendor ID mismatch Vendor %04x, Device %04x\n", |
| rom_data->vendor, rom_data->device); |
| return NULL; |
| } |
| |
| printk_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_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 long rom_address; |
| unsigned int rom_size; |
| unsigned int image_size=0; |
| |
| rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); |
| |
| 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; |
| |
| if (PCI_CLASS_DISPLAY_VGA == rom_data->class_hi) { |
| #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 |
| printk_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); |
| } else { |
| printk_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); |
| } |
| /* disable expansion ROM address decoding */ |
| pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address & ~PCI_ROM_ADDRESS_ENABLE); |
| |
| return NULL; |
| } |