git.sur5r.net Git - u-boot/blob - drivers/pci/pci_rom.c

   1 /*
   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 <dm.h>
  29 #include <errno.h>
  30 #include <malloc.h>
  31 #include <pci.h>
  32 #include <pci_rom.h>
  33 #include <vbe.h>
  34 #include <video_fb.h>
  35 #include <linux/screen_info.h>
  36
  37 __weak bool board_should_run_oprom(struct udevice *dev)
  38 {
  39         return true;
  40 }
  41
  42 static bool should_load_oprom(struct udevice *dev)
  43 {
  44         if (IS_ENABLED(CONFIG_ALWAYS_LOAD_OPROM))
  45                 return 1;
  46         if (board_should_run_oprom(dev))
  47                 return 1;
  48
  49         return 0;
  50 }
  51
  52 __weak uint32_t board_map_oprom_vendev(uint32_t vendev)
  53 {
  54         return vendev;
  55 }
  56
  57 static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp)
  58 {
  59         struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
  60         struct pci_rom_header *rom_header;
  61         struct pci_rom_data *rom_data;
  62         u16 rom_vendor, rom_device;
  63         u32 rom_class;
  64         u32 vendev;
  65         u32 mapped_vendev;
  66         u32 rom_address;
  67
  68         vendev = pplat->vendor << 16 | pplat->device;
  69         mapped_vendev = board_map_oprom_vendev(vendev);
  70         if (vendev != mapped_vendev)
  71                 debug("Device ID mapped to %#08x\n", mapped_vendev);
  72
  73 #ifdef CONFIG_VGA_BIOS_ADDR
  74         rom_address = CONFIG_VGA_BIOS_ADDR;
  75 #else
  76
  77         dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address);
  78         if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
  79                 debug("%s: rom_address=%x\n", __func__, rom_address);
  80                 return -ENOENT;
  81         }
  82
  83         /* Enable expansion ROM address decoding. */
  84         dm_pci_write_config32(dev, PCI_ROM_ADDRESS,
  85                               rom_address | PCI_ROM_ADDRESS_ENABLE);
  86 #endif
  87         debug("Option ROM address %x\n", rom_address);
  88         rom_header = (struct pci_rom_header *)(unsigned long)rom_address;
  89
  90         debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
  91               le16_to_cpu(rom_header->signature),
  92               rom_header->size * 512, le16_to_cpu(rom_header->data));
  93
  94         if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
  95                 printf("Incorrect expansion ROM header signature %04x\n",
  96                        le16_to_cpu(rom_header->signature));
  97 #ifndef CONFIG_VGA_BIOS_ADDR
  98                 /* Disable expansion ROM address decoding */
  99                 dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address);
 100 #endif
 101                 return -EINVAL;
 102         }
 103
 104         rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data));
 105         rom_vendor = le16_to_cpu(rom_data->vendor);
 106         rom_device = le16_to_cpu(rom_data->device);
 107
 108         debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
 109               rom_vendor, rom_device);
 110
 111         /* If the device id is mapped, a mismatch is expected */
 112         if ((pplat->vendor != rom_vendor || pplat->device != rom_device) &&
 113             (vendev == mapped_vendev)) {
 114                 printf("ID mismatch: vendor ID %04x, device ID %04x\n",
 115                        rom_vendor, rom_device);
 116                 /* Continue anyway */
 117         }
 118
 119         rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo;
 120         debug("PCI ROM image, Class Code %06x, Code Type %02x\n",
 121               rom_class, rom_data->type);
 122
 123         if (pplat->class != rom_class) {
 124                 debug("Class Code mismatch ROM %06x, dev %06x\n",
 125                       rom_class, pplat->class);
 126         }
 127         *hdrp = rom_header;
 128
 129         return 0;
 130 }
 131
 132 int pci_rom_load(struct pci_rom_header *rom_header,
 133                  struct pci_rom_header **ram_headerp)
 134 {
 135         struct pci_rom_data *rom_data;
 136         unsigned int rom_size;
 137         unsigned int image_size = 0;
 138         void *target;
 139
 140         do {
 141                 /* Get next image, until we see an x86 version */
 142                 rom_header = (struct pci_rom_header *)((void *)rom_header +
 143                                                             image_size);
 144
 145                 rom_data = (struct pci_rom_data *)((void *)rom_header +
 146                                 le16_to_cpu(rom_header->data));
 147
 148                 image_size = le16_to_cpu(rom_data->ilen) * 512;
 149         } while ((rom_data->type != 0) && (rom_data->indicator == 0));
 150
 151         if (rom_data->type != 0)
 152                 return -EACCES;
 153
 154         rom_size = rom_header->size * 512;
 155
 156 #ifdef PCI_VGA_RAM_IMAGE_START
 157         target = (void *)PCI_VGA_RAM_IMAGE_START;
 158 #else
 159         target = (void *)malloc(rom_size);
 160         if (!target)
 161                 return -ENOMEM;
 162 #endif
 163         if (target != rom_header) {
 164                 ulong start = get_timer(0);
 165
 166                 debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
 167                       rom_header, target, rom_size);
 168                 memcpy(target, rom_header, rom_size);
 169                 if (memcmp(target, rom_header, rom_size)) {
 170                         printf("VGA ROM copy failed\n");
 171                         return -EFAULT;
 172                 }
 173                 debug("Copy took %lums\n", get_timer(start));
 174         }
 175         *ram_headerp = target;
 176
 177         return 0;
 178 }
 179
 180 struct vbe_mode_info mode_info;
 181
 182 int vbe_get_video_info(struct graphic_device *gdev)
 183 {
 184 #ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
 185         struct vesa_mode_info *vesa = &mode_info.vesa;
 186
 187         gdev->winSizeX = vesa->x_resolution;
 188         gdev->winSizeY = vesa->y_resolution;
 189
 190         gdev->plnSizeX = vesa->x_resolution;
 191         gdev->plnSizeY = vesa->y_resolution;
 192
 193         gdev->gdfBytesPP = vesa->bits_per_pixel / 8;
 194
 195         switch (vesa->bits_per_pixel) {
 196         case 32:
 197         case 24:
 198                 gdev->gdfIndex = GDF_32BIT_X888RGB;
 199                 break;
 200         case 16:
 201                 gdev->gdfIndex = GDF_16BIT_565RGB;
 202                 break;
 203         default:
 204                 gdev->gdfIndex = GDF__8BIT_INDEX;
 205                 break;
 206         }
 207
 208         gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
 209         gdev->pciBase = vesa->phys_base_ptr;
 210
 211         gdev->frameAdrs = vesa->phys_base_ptr;
 212         gdev->memSize = vesa->bytes_per_scanline * vesa->y_resolution;
 213
 214         gdev->vprBase = vesa->phys_base_ptr;
 215         gdev->cprBase = vesa->phys_base_ptr;
 216
 217         return gdev->winSizeX ? 0 : -ENOSYS;
 218 #else
 219         return -ENOSYS;
 220 #endif
 221 }
 222
 223 void setup_video(struct screen_info *screen_info)
 224 {
 225         struct vesa_mode_info *vesa = &mode_info.vesa;
 226
 227         /* Sanity test on VESA parameters */
 228         if (!vesa->x_resolution || !vesa->y_resolution)
 229                 return;
 230
 231         screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
 232
 233         screen_info->lfb_width = vesa->x_resolution;
 234         screen_info->lfb_height = vesa->y_resolution;
 235         screen_info->lfb_depth = vesa->bits_per_pixel;
 236         screen_info->lfb_linelength = vesa->bytes_per_scanline;
 237         screen_info->lfb_base = vesa->phys_base_ptr;
 238         screen_info->lfb_size =
 239                 ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
 240                       65536);
 241         screen_info->lfb_size >>= 16;
 242         screen_info->red_size = vesa->red_mask_size;
 243         screen_info->red_pos = vesa->red_mask_pos;
 244         screen_info->green_size = vesa->green_mask_size;
 245         screen_info->green_pos = vesa->green_mask_pos;
 246         screen_info->blue_size = vesa->blue_mask_size;
 247         screen_info->blue_pos = vesa->blue_mask_pos;
 248         screen_info->rsvd_size = vesa->reserved_mask_size;
 249         screen_info->rsvd_pos = vesa->reserved_mask_pos;
 250 }
 251
 252 int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
 253                         int exec_method)
 254 {
 255         struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
 256         struct pci_rom_header *rom, *ram;
 257         int vesa_mode = -1;
 258         bool emulate;
 259         int ret;
 260
 261         /* Only execute VGA ROMs */
 262         if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
 263                 debug("%s: Class %#x, should be %#x\n", __func__, pplat->class,
 264                       PCI_CLASS_DISPLAY_VGA);
 265                 return -ENODEV;
 266         }
 267
 268         if (!should_load_oprom(dev))
 269                 return -ENXIO;
 270
 271         ret = pci_rom_probe(dev, &rom);
 272         if (ret)
 273                 return ret;
 274
 275         ret = pci_rom_load(rom, &ram);
 276         if (ret)
 277                 return ret;
 278
 279         if (!board_should_run_oprom(dev))
 280                 return -ENXIO;
 281
 282 #if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
 283                 defined(CONFIG_FRAMEBUFFER_VESA_MODE)
 284         vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
 285 #endif
 286         debug("Selected vesa mode %#x\n", vesa_mode);
 287
 288         if (exec_method & PCI_ROM_USE_NATIVE) {
 289 #ifdef CONFIG_X86
 290                 emulate = false;
 291 #else
 292                 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
 293                         printf("BIOS native execution is only available on x86\n");
 294                         return -ENOSYS;
 295                 }
 296                 emulate = true;
 297 #endif
 298         } else {
 299 #ifdef CONFIG_BIOSEMU
 300                 emulate = true;
 301 #else
 302                 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
 303                         printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
 304                         return -ENOSYS;
 305                 }
 306                 emulate = false;
 307 #endif
 308         }
 309
 310         if (emulate) {
 311 #ifdef CONFIG_BIOSEMU
 312                 BE_VGAInfo *info;
 313
 314                 ret = biosemu_setup(dm_pci_get_bdf(dev), &info);
 315                 if (ret)
 316                         return ret;
 317                 biosemu_set_interrupt_handler(0x15, int15_handler);
 318                 ret = biosemu_run(dm_pci_get_bdf(dev), (uchar *)ram, 1 << 16,
 319                                   info, true, vesa_mode, &mode_info);
 320                 if (ret)
 321                         return ret;
 322 #endif
 323         } else {
 324 #ifdef CONFIG_X86
 325                 bios_set_interrupt_handler(0x15, int15_handler);
 326
 327                 bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
 328                                 &mode_info);
 329 #endif
 330         }
 331         debug("Final vesa mode %#x\n", mode_info.video_mode);
 332
 333         return 0;
 334 }