2 * This file is part of the coreboot project.
4 * Copyright (C) 2005 Li-Ta Lo <ollie@lanl.gov>
5 * Copyright (C) 2005 Tyan
6 * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
7 * Copyright (C) 2005 Ronald G. Minnich <rminnich@gmail.com>
8 * Copyright (C) 2005-2007 Stefan Reinauer <stepan@openbios.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <console/console.h>
25 #include <device/device.h>
26 #include <device/pci.h>
27 #include <device/pci_ids.h>
28 #include <device/pci_ops.h>
30 struct rom_header * pci_rom_probe(struct device *dev)
32 unsigned long rom_address;
33 struct rom_header *rom_header;
34 struct pci_data *rom_data;
36 if (dev->on_mainboard) {
37 // in case some device PCI_ROM_ADDRESS can not be set or readonly
38 rom_address = dev->rom_address;
40 rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
43 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
47 printk_debug("rom address for %s = %x\n", dev_path(dev), rom_address);
49 if(!dev->on_mainboard) {
50 /* enable expansion ROM address decoding */
51 pci_write_config32(dev, PCI_ROM_ADDRESS,
52 rom_address|PCI_ROM_ADDRESS_ENABLE);
55 rom_header = (struct rom_header *)rom_address;
56 printk_spew("PCI Expansion ROM, signature 0x%04x, INIT size 0x%04x, data ptr 0x%04x\n",
57 le32_to_cpu(rom_header->signature),
58 rom_header->size * 512, le32_to_cpu(rom_header->data));
59 if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
60 printk_err("Incorrect Expansion ROM Header Signature %04x\n",
61 le32_to_cpu(rom_header->signature));
65 rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
66 printk_spew("PCI ROM Image, Vendor %04x, Device %04x,\n",
67 rom_data->vendor, rom_data->device);
68 if (dev->vendor != rom_data->vendor || dev->device != rom_data->device) {
69 printk_err("Device or Vendor ID mismatch Vendor %04x, Device %04x\n",
70 rom_data->vendor, rom_data->device);
74 printk_spew("PCI ROM Image, Class Code %04x%02x, Code Type %02x\n",
75 rom_data->class_hi, rom_data->class_lo,
77 if (dev->class != ((rom_data->class_hi << 8) | rom_data->class_lo)) {
78 printk_debug("Class Code mismatch ROM %08x, dev %08x\n",
79 (rom_data->class_hi << 8) | rom_data->class_lo, dev->class);
86 static void *pci_ram_image_start = (void *)PCI_RAM_IMAGE_START;
88 struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header)
90 struct pci_data * rom_data;
91 unsigned long rom_address;
92 unsigned int rom_size;
93 unsigned int image_size=0;
95 rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
98 rom_header = (unsigned char *) rom_header + image_size; // get next image
99 rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
100 image_size = le32_to_cpu(rom_data->ilen) * 512;
101 } while ((rom_data->type!=0) && (rom_data->indicator!=0)); // make sure we got x86 version
103 if(rom_data->type!=0) return NULL;
105 rom_size = rom_header->size * 512;
107 if (PCI_CLASS_DISPLAY_VGA == rom_data->class_hi) {
108 #if CONFIG_CONSOLE_VGA == 1 && CONFIG_CONSOLE_VGA_MULTI == 0
109 extern device_t vga_pri; // the primary vga device, defined in device.c
110 if (dev != vga_pri) return NULL; // only one VGA supported
112 printk_debug("copying VGA ROM Image from 0x%x to 0x%x, 0x%x bytes\n",
113 rom_header, PCI_VGA_RAM_IMAGE_START, rom_size);
114 memcpy(PCI_VGA_RAM_IMAGE_START, rom_header, rom_size);
115 return (struct rom_header *) (PCI_VGA_RAM_IMAGE_START);
117 printk_debug("copying non-VGA ROM Image from 0x%x to 0x%x, 0x%x bytes\n",
118 rom_header, pci_ram_image_start, rom_size);
119 memcpy(pci_ram_image_start, rom_header, rom_size);
120 pci_ram_image_start += rom_size;
121 return (struct rom_header *) (pci_ram_image_start-rom_size);
123 /* disable expansion ROM address decoding */
124 pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address & ~PCI_ROM_ADDRESS_ENABLE);