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Uwe Hermannb80dbf02007-04-22 19:08:13 +00001/*
Stefan Reinauer7e61e452008-01-18 10:35:56 +00002 * This file is part of the coreboot project.
Uwe Hermannb80dbf02007-04-22 19:08:13 +00003 *
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>
9 *
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.
13 *
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.
18 *
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
22 */
23
Li-Ta Lo883b8792005-01-10 23:16:22 +000024#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>
29
30struct rom_header * pci_rom_probe(struct device *dev)
31{
32 unsigned long rom_address;
33 struct rom_header *rom_header;
34 struct pci_data *rom_data;
35
arch import user (historical)23053642005-07-06 16:49:59 +000036 if (dev->on_mainboard) {
37 // in case some device PCI_ROM_ADDRESS can not be set or readonly
38 rom_address = dev->rom_address;
39 } else {
40 rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
41 }
Yinghai Lu9e4faef2005-01-14 22:04:49 +000042
Li-Ta Lo883b8792005-01-10 23:16:22 +000043 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
arch import user (historical)23053642005-07-06 16:49:59 +000044 return NULL;
Li-Ta Lo883b8792005-01-10 23:16:22 +000045 }
46
Li-Ta Lobec039c2005-01-19 23:19:26 +000047 printk_debug("rom address for %s = %x\n", dev_path(dev), rom_address);
Stefan Reinauer7ce8c542005-12-02 21:52:30 +000048
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);
53 }
Li-Ta Lo883b8792005-01-10 23:16:22 +000054
Stefan Reinauer7ce8c542005-12-02 21:52:30 +000055 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",
Yinghai Lu54ab3112005-01-18 03:10:46 +000057 le32_to_cpu(rom_header->signature),
Li-Ta Lo515f6c72005-01-11 22:48:54 +000058 rom_header->size * 512, le32_to_cpu(rom_header->data));
Li-Ta Lo883b8792005-01-10 23:16:22 +000059 if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
Yinghai Lu54ab3112005-01-18 03:10:46 +000060 printk_err("Incorrect Expansion ROM Header Signature %04x\n",
61 le32_to_cpu(rom_header->signature));
Li-Ta Lo883b8792005-01-10 23:16:22 +000062 return NULL;
63 }
64
Stefan Reinauer7ce8c542005-12-02 21:52:30 +000065 rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
Li-Ta Lobec039c2005-01-19 23:19:26 +000066 printk_spew("PCI ROM Image, Vendor %04x, Device %04x,\n",
Yinghai Lu54ab3112005-01-18 03:10:46 +000067 rom_data->vendor, rom_data->device);
Li-Ta Lo883b8792005-01-10 23:16:22 +000068 if (dev->vendor != rom_data->vendor || dev->device != rom_data->device) {
Li-Ta Lobec039c2005-01-19 23:19:26 +000069 printk_err("Device or Vendor ID mismatch Vendor %04x, Device %04x\n",
70 rom_data->vendor, rom_data->device);
Li-Ta Lo883b8792005-01-10 23:16:22 +000071 return NULL;
72 }
73
Yinghai Lu54ab3112005-01-18 03:10:46 +000074 printk_spew("PCI ROM Image, Class Code %04x%02x, Code Type %02x\n",
75 rom_data->class_hi, rom_data->class_lo,
Li-Ta Lo515f6c72005-01-11 22:48:54 +000076 rom_data->type);
Yinghai Lu54ab3112005-01-18 03:10:46 +000077 if (dev->class != ((rom_data->class_hi << 8) | rom_data->class_lo)) {
Stefan Reinauer7ce8c542005-12-02 21:52:30 +000078 printk_debug("Class Code mismatch ROM %08x, dev %08x\n",
Yinghai Lu54ab3112005-01-18 03:10:46 +000079 (rom_data->class_hi << 8) | rom_data->class_lo, dev->class);
arch import user (historical)dc811182005-07-06 17:16:09 +000080 //return NULL;
Li-Ta Lo883b8792005-01-10 23:16:22 +000081 }
82
83 return rom_header;
84}
85
Stefan Reinauer7ce8c542005-12-02 21:52:30 +000086static void *pci_ram_image_start = (void *)PCI_RAM_IMAGE_START;
Yinghai Lu9e4faef2005-01-14 22:04:49 +000087
Li-Ta Lo883b8792005-01-10 23:16:22 +000088struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header)
89{
90 struct pci_data * rom_data;
91 unsigned long rom_address;
92 unsigned int rom_size;
arch import user (historical)23053642005-07-06 16:49:59 +000093 unsigned int image_size=0;
Li-Ta Lo883b8792005-01-10 23:16:22 +000094
95 rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
arch import user (historical)23053642005-07-06 16:49:59 +000096
97 do {
Stefan Reinauer7ce8c542005-12-02 21:52:30 +000098 rom_header = (unsigned char *) rom_header + image_size; // get next image
99 rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
arch import user (historical)23053642005-07-06 16:49:59 +0000100 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
102
103 if(rom_data->type!=0) return NULL;
104
105 rom_size = rom_header->size * 512;
Li-Ta Lo883b8792005-01-10 23:16:22 +0000106
Yinghai Lu54ab3112005-01-18 03:10:46 +0000107 if (PCI_CLASS_DISPLAY_VGA == rom_data->class_hi) {
Roman Kononovd6d7a112007-04-09 22:50:12 +0000108#if CONFIG_CONSOLE_VGA == 1 && CONFIG_CONSOLE_VGA_MULTI == 0
109 extern device_t vga_pri; // the primary vga device, defined in device.c
Yinghai Lu1f1085b2005-01-17 21:37:12 +0000110 if (dev != vga_pri) return NULL; // only one VGA supported
Roman Kononovd6d7a112007-04-09 22:50:12 +0000111#endif
Stefan Reinauer6c20eb42006-04-24 16:56:05 +0000112 printk_debug("copying VGA ROM Image from 0x%x to 0x%x, 0x%x bytes\n",
arch import user (historical)23053642005-07-06 16:49:59 +0000113 rom_header, PCI_VGA_RAM_IMAGE_START, rom_size);
Li-Ta Lo883b8792005-01-10 23:16:22 +0000114 memcpy(PCI_VGA_RAM_IMAGE_START, rom_header, rom_size);
115 return (struct rom_header *) (PCI_VGA_RAM_IMAGE_START);
116 } else {
Stefan Reinauer6c20eb42006-04-24 16:56:05 +0000117 printk_debug("copying non-VGA ROM Image from 0x%x to 0x%x, 0x%x bytes\n",
Stefan Reinauer7ce8c542005-12-02 21:52:30 +0000118 rom_header, pci_ram_image_start, rom_size);
Li-Ta Lo883b8792005-01-10 23:16:22 +0000119 memcpy(pci_ram_image_start, rom_header, rom_size);
120 pci_ram_image_start += rom_size;
Stefan Reinauer7ce8c542005-12-02 21:52:30 +0000121 return (struct rom_header *) (pci_ram_image_start-rom_size);
Li-Ta Lo883b8792005-01-10 23:16:22 +0000122 }
123 /* disable expansion ROM address decoding */
124 pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address & ~PCI_ROM_ADDRESS_ENABLE);
Yinghai Lu9e4faef2005-01-14 22:04:49 +0000125
126 return NULL;
Li-Ta Lo883b8792005-01-10 23:16:22 +0000127}