blob: 5ba315b2ad489aae209f37bcc34102ee543bafba [file] [log] [blame]
Simon Glassf87bbff2014-11-14 20:56:33 -07001/*
2 * Copyright (C) 2014 Google, Inc
3 *
4 * From coreboot, originally based on the Linux kernel (drivers/pci/pci.c).
5 *
6 * Modifications are:
7 * Copyright (C) 2003-2004 Linux Networx
8 * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
9 * Copyright (C) 2003-2006 Ronald G. Minnich <rminnich@gmail.com>
10 * Copyright (C) 2004-2005 Li-Ta Lo <ollie@lanl.gov>
11 * Copyright (C) 2005-2006 Tyan
12 * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
13 * Copyright (C) 2005-2009 coresystems GmbH
14 * (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
15 *
16 * PCI Bus Services, see include/linux/pci.h for further explanation.
17 *
18 * Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
19 * David Mosberger-Tang
20 *
21 * Copyright 1997 -- 1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
22
23 * SPDX-License-Identifier: GPL-2.0
24 */
25
26#include <common.h>
27#include <bios_emul.h>
28#include <errno.h>
29#include <malloc.h>
30#include <pci.h>
31#include <pci_rom.h>
32#include <vbe.h>
33#include <video_fb.h>
34
35#ifdef CONFIG_HAVE_ACPI_RESUME
36#include <asm/acpi.h>
37#endif
38
39__weak bool board_should_run_oprom(pci_dev_t dev)
40{
41 return true;
42}
43
44static bool should_load_oprom(pci_dev_t dev)
45{
46#ifdef CONFIG_HAVE_ACPI_RESUME
47 if (acpi_get_slp_type() == 3)
48 return false;
49#endif
50 if (IS_ENABLED(CONFIG_ALWAYS_LOAD_OPROM))
51 return 1;
52 if (board_should_run_oprom(dev))
53 return 1;
54
55 return 0;
56}
57
58__weak uint32_t board_map_oprom_vendev(uint32_t vendev)
59{
60 return vendev;
61}
62
63static int pci_rom_probe(pci_dev_t dev, uint class,
64 struct pci_rom_header **hdrp)
65{
66 struct pci_rom_header *rom_header;
67 struct pci_rom_data *rom_data;
68 u16 vendor, device;
69 u32 vendev;
70 u32 mapped_vendev;
71 u32 rom_address;
72
73 pci_read_config_word(dev, PCI_VENDOR_ID, &vendor);
74 pci_read_config_word(dev, PCI_DEVICE_ID, &device);
75 vendev = vendor << 16 | device;
76 mapped_vendev = board_map_oprom_vendev(vendev);
77 if (vendev != mapped_vendev)
78 debug("Device ID mapped to %#08x\n", mapped_vendev);
79
80#ifdef CONFIG_X86_OPTION_ROM_ADDR
81 rom_address = CONFIG_X86_OPTION_ROM_ADDR;
82#else
83 pci_write_config_dword(dev, PCI_ROM_ADDRESS, (u32)PCI_ROM_ADDRESS_MASK);
84 pci_read_config_dword(dev, PCI_ROM_ADDRESS, &rom_address);
85 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
86 debug("%s: rom_address=%x\n", __func__, rom_address);
87 return -ENOENT;
88 }
89
90 /* Enable expansion ROM address decoding. */
91 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
92 rom_address | PCI_ROM_ADDRESS_ENABLE);
93#endif
94 debug("Option ROM address %x\n", rom_address);
95 rom_header = (struct pci_rom_header *)rom_address;
96
97 debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
98 le32_to_cpu(rom_header->signature),
99 rom_header->size * 512, le32_to_cpu(rom_header->data));
100
101 if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
102 printf("Incorrect expansion ROM header signature %04x\n",
103 le32_to_cpu(rom_header->signature));
104 return -EINVAL;
105 }
106
107 rom_data = (((void *)rom_header) + le32_to_cpu(rom_header->data));
108
109 debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
110 rom_data->vendor, rom_data->device);
111
112 /* If the device id is mapped, a mismatch is expected */
113 if ((vendor != rom_data->vendor || device != rom_data->device) &&
114 (vendev == mapped_vendev)) {
115 printf("ID mismatch: vendor ID %04x, device ID %04x\n",
116 rom_data->vendor, rom_data->device);
117 return -EPERM;
118 }
119
120 debug("PCI ROM image, Class Code %04x%02x, Code Type %02x\n",
121 rom_data->class_hi, rom_data->class_lo, rom_data->type);
122
123 if (class != ((rom_data->class_hi << 8) | rom_data->class_lo)) {
124 debug("Class Code mismatch ROM %08x, dev %08x\n",
125 (rom_data->class_hi << 8) | rom_data->class_lo,
126 class);
127 }
128 *hdrp = rom_header;
129
130 return 0;
131}
132
133int pci_rom_load(uint16_t class, struct pci_rom_header *rom_header,
134 struct pci_rom_header **ram_headerp)
135{
136 struct pci_rom_data *rom_data;
137 unsigned int rom_size;
138 unsigned int image_size = 0;
139 void *target;
140
141 do {
142 /* Get next image, until we see an x86 version */
143 rom_header = (struct pci_rom_header *)((void *)rom_header +
144 image_size);
145
146 rom_data = (struct pci_rom_data *)((void *)rom_header +
147 le32_to_cpu(rom_header->data));
148
149 image_size = le32_to_cpu(rom_data->ilen) * 512;
150 } while ((rom_data->type != 0) && (rom_data->indicator != 0));
151
152 if (rom_data->type != 0)
153 return -EACCES;
154
155 rom_size = rom_header->size * 512;
156
157 target = (void *)PCI_VGA_RAM_IMAGE_START;
158 if (target != rom_header) {
Simon Glassf6898082015-01-01 16:18:01 -0700159 ulong start = get_timer(0);
160
Simon Glassf87bbff2014-11-14 20:56:33 -0700161 debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
162 rom_header, target, rom_size);
163 memcpy(target, rom_header, rom_size);
164 if (memcmp(target, rom_header, rom_size)) {
165 printf("VGA ROM copy failed\n");
166 return -EFAULT;
167 }
Simon Glassf6898082015-01-01 16:18:01 -0700168 debug("Copy took %lums\n", get_timer(start));
Simon Glassf87bbff2014-11-14 20:56:33 -0700169 }
170 *ram_headerp = target;
171
172 return 0;
173}
174
175static struct vbe_mode_info mode_info;
176
177int vbe_get_video_info(struct graphic_device *gdev)
178{
179#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
180 struct vesa_mode_info *vesa = &mode_info.vesa;
181
182 gdev->winSizeX = vesa->x_resolution;
183 gdev->winSizeY = vesa->y_resolution;
184
185 gdev->plnSizeX = vesa->x_resolution;
186 gdev->plnSizeY = vesa->y_resolution;
187
188 gdev->gdfBytesPP = vesa->bits_per_pixel / 8;
189
190 switch (vesa->bits_per_pixel) {
191 case 24:
192 gdev->gdfIndex = GDF_32BIT_X888RGB;
193 break;
194 case 16:
195 gdev->gdfIndex = GDF_16BIT_565RGB;
196 break;
197 default:
198 gdev->gdfIndex = GDF__8BIT_INDEX;
199 break;
200 }
201
202 gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
203 gdev->pciBase = vesa->phys_base_ptr;
204
205 gdev->frameAdrs = vesa->phys_base_ptr;
206 gdev->memSize = vesa->bytes_per_scanline * vesa->y_resolution;
207
208 gdev->vprBase = vesa->phys_base_ptr;
209 gdev->cprBase = vesa->phys_base_ptr;
210
Simon Glassed33cb82015-01-01 16:18:00 -0700211 return gdev->winSizeX ? 0 : -ENOSYS;
Simon Glassf87bbff2014-11-14 20:56:33 -0700212#else
213 return -ENOSYS;
214#endif
215}
216
217int pci_run_vga_bios(pci_dev_t dev, int (*int15_handler)(void), bool emulate)
218{
219 struct pci_rom_header *rom, *ram;
220 int vesa_mode = -1;
221 uint16_t class;
222 int ret;
223
224 /* Only execute VGA ROMs */
225 pci_read_config_word(dev, PCI_CLASS_DEVICE, &class);
226 if ((class ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
227 debug("%s: Class %#x, should be %#x\n", __func__, class,
228 PCI_CLASS_DISPLAY_VGA);
229 return -ENODEV;
230 }
231
232 if (!should_load_oprom(dev))
233 return -ENXIO;
234
235 ret = pci_rom_probe(dev, class, &rom);
236 if (ret)
237 return ret;
238
239 ret = pci_rom_load(class, rom, &ram);
240 if (ret)
241 return ret;
242
243 if (!board_should_run_oprom(dev))
244 return -ENXIO;
245
246#if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
247 defined(CONFIG_FRAMEBUFFER_VESA_MODE)
248 vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
249#endif
250 debug("Selected vesa mode %d\b", vesa_mode);
251 if (emulate) {
252#ifdef CONFIG_BIOSEMU
253 BE_VGAInfo *info;
254
255 ret = biosemu_setup(dev, &info);
256 if (ret)
257 return ret;
258 biosemu_set_interrupt_handler(0x15, int15_handler);
259 ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info, true,
260 vesa_mode, &mode_info);
261 if (ret)
262 return ret;
263#else
264 printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
265 return -ENOSYS;
266#endif
267 } else {
268#ifdef CONFIG_X86
269 bios_set_interrupt_handler(0x15, int15_handler);
270
271 bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
272 &mode_info);
273#else
274 printf("BIOS native execution is only available on x86\n");
275 return -ENOSYS;
276#endif
277 }
278 debug("Final vesa mode %d\n", mode_info.video_mode);
279
280 return 0;
281}