2 * Copyright (C) 2014 Google, Inc
4 * From coreboot, originally based on the Linux kernel (drivers/pci/pci.c).
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)
16 * PCI Bus Services, see include/linux/pci.h for further explanation.
18 * Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
19 * David Mosberger-Tang
21 * Copyright 1997 -- 1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
23 * SPDX-License-Identifier: GPL-2.0
27 #include <bios_emul.h>
36 #include <linux/screen_info.h>
38 __weak bool board_should_run_oprom(struct udevice *dev)
43 __weak bool board_should_load_oprom(struct udevice *dev)
48 __weak uint32_t board_map_oprom_vendev(uint32_t vendev)
53 static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp)
55 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
56 struct pci_rom_header *rom_header;
57 struct pci_rom_data *rom_data;
58 u16 rom_vendor, rom_device;
64 vendev = pplat->vendor << 16 | pplat->device;
65 mapped_vendev = board_map_oprom_vendev(vendev);
66 if (vendev != mapped_vendev)
67 debug("Device ID mapped to %#08x\n", mapped_vendev);
69 #ifdef CONFIG_VGA_BIOS_ADDR
70 rom_address = CONFIG_VGA_BIOS_ADDR;
73 dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address);
74 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
75 debug("%s: rom_address=%x\n", __func__, rom_address);
79 /* Enable expansion ROM address decoding. */
80 dm_pci_write_config32(dev, PCI_ROM_ADDRESS,
81 rom_address | PCI_ROM_ADDRESS_ENABLE);
83 debug("Option ROM address %x\n", rom_address);
84 rom_header = (struct pci_rom_header *)(unsigned long)rom_address;
86 debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
87 le16_to_cpu(rom_header->signature),
88 rom_header->size * 512, le16_to_cpu(rom_header->data));
90 if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
91 printf("Incorrect expansion ROM header signature %04x\n",
92 le16_to_cpu(rom_header->signature));
93 #ifndef CONFIG_VGA_BIOS_ADDR
94 /* Disable expansion ROM address decoding */
95 dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address);
100 rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data));
101 rom_vendor = le16_to_cpu(rom_data->vendor);
102 rom_device = le16_to_cpu(rom_data->device);
104 debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
105 rom_vendor, rom_device);
107 /* If the device id is mapped, a mismatch is expected */
108 if ((pplat->vendor != rom_vendor || pplat->device != rom_device) &&
109 (vendev == mapped_vendev)) {
110 printf("ID mismatch: vendor ID %04x, device ID %04x\n",
111 rom_vendor, rom_device);
112 /* Continue anyway */
115 rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo;
116 debug("PCI ROM image, Class Code %06x, Code Type %02x\n",
117 rom_class, rom_data->type);
119 if (pplat->class != rom_class) {
120 debug("Class Code mismatch ROM %06x, dev %06x\n",
121 rom_class, pplat->class);
129 * pci_rom_load() - Load a ROM image and return a pointer to it
131 * @rom_header: Pointer to ROM image
132 * @ram_headerp: Returns a pointer to the image in RAM
133 * @allocedp: Returns true if @ram_headerp was allocated and needs
135 * @return 0 if OK, -ve on error. Note that @allocedp is set up regardless of
136 * the error state. Even if this function returns an error, it may have
139 static int pci_rom_load(struct pci_rom_header *rom_header,
140 struct pci_rom_header **ram_headerp, bool *allocedp)
142 struct pci_rom_data *rom_data;
143 unsigned int rom_size;
144 unsigned int image_size = 0;
149 /* Get next image, until we see an x86 version */
150 rom_header = (struct pci_rom_header *)((void *)rom_header +
153 rom_data = (struct pci_rom_data *)((void *)rom_header +
154 le16_to_cpu(rom_header->data));
156 image_size = le16_to_cpu(rom_data->ilen) * 512;
157 } while ((rom_data->type != 0) && (rom_data->indicator == 0));
159 if (rom_data->type != 0)
162 rom_size = rom_header->size * 512;
164 #ifdef PCI_VGA_RAM_IMAGE_START
165 target = (void *)PCI_VGA_RAM_IMAGE_START;
167 target = (void *)malloc(rom_size);
172 if (target != rom_header) {
173 ulong start = get_timer(0);
175 debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
176 rom_header, target, rom_size);
177 memcpy(target, rom_header, rom_size);
178 if (memcmp(target, rom_header, rom_size)) {
179 printf("VGA ROM copy failed\n");
182 debug("Copy took %lums\n", get_timer(start));
184 *ram_headerp = target;
189 struct vbe_mode_info mode_info;
191 int vbe_get_video_info(struct graphic_device *gdev)
193 #ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
194 struct vesa_mode_info *vesa = &mode_info.vesa;
196 gdev->winSizeX = vesa->x_resolution;
197 gdev->winSizeY = vesa->y_resolution;
199 gdev->plnSizeX = vesa->x_resolution;
200 gdev->plnSizeY = vesa->y_resolution;
202 gdev->gdfBytesPP = vesa->bits_per_pixel / 8;
204 switch (vesa->bits_per_pixel) {
207 gdev->gdfIndex = GDF_32BIT_X888RGB;
210 gdev->gdfIndex = GDF_16BIT_565RGB;
213 gdev->gdfIndex = GDF__8BIT_INDEX;
217 gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
218 gdev->pciBase = vesa->phys_base_ptr;
220 gdev->frameAdrs = vesa->phys_base_ptr;
221 gdev->memSize = vesa->bytes_per_scanline * vesa->y_resolution;
223 gdev->vprBase = vesa->phys_base_ptr;
224 gdev->cprBase = vesa->phys_base_ptr;
226 return gdev->winSizeX ? 0 : -ENOSYS;
232 void setup_video(struct screen_info *screen_info)
234 struct vesa_mode_info *vesa = &mode_info.vesa;
236 /* Sanity test on VESA parameters */
237 if (!vesa->x_resolution || !vesa->y_resolution)
240 screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
242 screen_info->lfb_width = vesa->x_resolution;
243 screen_info->lfb_height = vesa->y_resolution;
244 screen_info->lfb_depth = vesa->bits_per_pixel;
245 screen_info->lfb_linelength = vesa->bytes_per_scanline;
246 screen_info->lfb_base = vesa->phys_base_ptr;
247 screen_info->lfb_size =
248 ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
250 screen_info->lfb_size >>= 16;
251 screen_info->red_size = vesa->red_mask_size;
252 screen_info->red_pos = vesa->red_mask_pos;
253 screen_info->green_size = vesa->green_mask_size;
254 screen_info->green_pos = vesa->green_mask_pos;
255 screen_info->blue_size = vesa->blue_mask_size;
256 screen_info->blue_pos = vesa->blue_mask_pos;
257 screen_info->rsvd_size = vesa->reserved_mask_size;
258 screen_info->rsvd_pos = vesa->reserved_mask_pos;
261 int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
264 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
265 struct pci_rom_header *rom = NULL, *ram = NULL;
267 bool emulate, alloced;
270 /* Only execute VGA ROMs */
271 if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
272 debug("%s: Class %#x, should be %#x\n", __func__, pplat->class,
273 PCI_CLASS_DISPLAY_VGA);
277 if (!board_should_load_oprom(dev))
280 ret = pci_rom_probe(dev, &rom);
284 ret = pci_rom_load(rom, &ram, &alloced);
288 if (!board_should_run_oprom(dev)) {
293 #if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
294 defined(CONFIG_FRAMEBUFFER_VESA_MODE)
295 vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
297 debug("Selected vesa mode %#x\n", vesa_mode);
299 if (exec_method & PCI_ROM_USE_NATIVE) {
303 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
304 printf("BIOS native execution is only available on x86\n");
311 #ifdef CONFIG_BIOSEMU
314 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
315 printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
324 #ifdef CONFIG_BIOSEMU
327 ret = biosemu_setup(dev, &info);
330 biosemu_set_interrupt_handler(0x15, int15_handler);
331 ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info,
332 true, vesa_mode, &mode_info);
337 #if defined(CONFIG_X86) && CONFIG_IS_ENABLED(X86_32BIT_INIT)
338 bios_set_interrupt_handler(0x15, int15_handler);
340 bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
344 debug("Final vesa mode %#x\n", mode_info.video_mode);
353 #ifdef CONFIG_DM_VIDEO
354 int vbe_setup_video_priv(struct vesa_mode_info *vesa,
355 struct video_priv *uc_priv,
356 struct video_uc_platdata *plat)
358 if (!vesa->x_resolution)
360 uc_priv->xsize = vesa->x_resolution;
361 uc_priv->ysize = vesa->y_resolution;
362 switch (vesa->bits_per_pixel) {
365 uc_priv->bpix = VIDEO_BPP32;
368 uc_priv->bpix = VIDEO_BPP16;
371 return -EPROTONOSUPPORT;
373 plat->base = vesa->phys_base_ptr;
374 plat->size = vesa->bytes_per_scanline * vesa->y_resolution;
379 int vbe_setup_video(struct udevice *dev, int (*int15_handler)(void))
381 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
382 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
387 /* If we are running from EFI or coreboot, this can't work */
388 if (!ll_boot_init()) {
389 printf("Not available (previous bootloader prevents it)\n");
392 bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
393 ret = dm_pci_run_vga_bios(dev, int15_handler, PCI_ROM_USE_NATIVE |
394 PCI_ROM_ALLOW_FALLBACK);
395 bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
397 debug("failed to run video BIOS: %d\n", ret);
401 ret = vbe_setup_video_priv(&mode_info.vesa, uc_priv, plat);
403 debug("No video mode configured\n");
407 printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
408 mode_info.vesa.bits_per_pixel);