| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2014 Google, Inc |
| * |
| * From coreboot, originally based on the Linux kernel (drivers/pci/pci.c). |
| * |
| * Modifications are: |
| * Copyright (C) 2003-2004 Linux Networx |
| * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx) |
| * Copyright (C) 2003-2006 Ronald G. Minnich <rminnich@gmail.com> |
| * Copyright (C) 2004-2005 Li-Ta Lo <ollie@lanl.gov> |
| * Copyright (C) 2005-2006 Tyan |
| * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan) |
| * Copyright (C) 2005-2009 coresystems GmbH |
| * (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH) |
| * |
| * PCI Bus Services, see include/linux/pci.h for further explanation. |
| * |
| * Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter, |
| * David Mosberger-Tang |
| * |
| * Copyright 1997 -- 1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz> |
| */ |
| |
| #define LOG_CATEGORY UCLASS_PCI |
| |
| #include <bios_emul.h> |
| #include <bloblist.h> |
| #include <bootstage.h> |
| #include <dm.h> |
| #include <errno.h> |
| #include <init.h> |
| #include <log.h> |
| #include <malloc.h> |
| #include <pci.h> |
| #include <pci_rom.h> |
| #include <spl.h> |
| #include <time.h> |
| #include <vesa.h> |
| #include <video.h> |
| #include <acpi/acpi_s3.h> |
| #include <asm/global_data.h> |
| #include <linux/screen_info.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| __weak bool board_should_run_oprom(struct udevice *dev) |
| { |
| #if defined(CONFIG_X86) && defined(CONFIG_HAVE_ACPI_RESUME) |
| if (gd->arch.prev_sleep_state == ACPI_S3) { |
| if (IS_ENABLED(CONFIG_S3_VGA_ROM_RUN)) |
| return true; |
| else |
| return false; |
| } |
| #endif |
| |
| return true; |
| } |
| |
| __weak bool board_should_load_oprom(struct udevice *dev) |
| { |
| return true; |
| } |
| |
| __weak uint32_t board_map_oprom_vendev(uint32_t vendev) |
| { |
| return vendev; |
| } |
| |
| static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp) |
| { |
| struct pci_child_plat *pplat = dev_get_parent_plat(dev); |
| struct pci_rom_header *rom_header; |
| struct pci_rom_data *rom_data; |
| u16 rom_vendor, rom_device; |
| u32 rom_class; |
| u32 vendev; |
| u32 mapped_vendev; |
| u32 rom_address; |
| |
| vendev = pplat->vendor << 16 | pplat->device; |
| mapped_vendev = board_map_oprom_vendev(vendev); |
| if (vendev != mapped_vendev) |
| debug("Device ID mapped to %#08x\n", mapped_vendev); |
| |
| #ifdef CONFIG_VGA_BIOS_ADDR |
| rom_address = CONFIG_VGA_BIOS_ADDR; |
| #else |
| |
| dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address); |
| if (rom_address == 0x00000000 || rom_address == 0xffffffff) { |
| debug("%s: rom_address=%x\n", __func__, rom_address); |
| return -ENOENT; |
| } |
| rom_address &= PCI_ROM_ADDRESS_MASK; |
| |
| /* Enable expansion ROM address decoding. */ |
| dm_pci_write_config32(dev, PCI_ROM_ADDRESS, |
| rom_address | PCI_ROM_ADDRESS_ENABLE); |
| #endif |
| debug("Option ROM address %x\n", rom_address); |
| rom_header = (struct pci_rom_header *)(unsigned long)rom_address; |
| |
| debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n", |
| le16_to_cpu(rom_header->signature), |
| rom_header->size * 512, le16_to_cpu(rom_header->data)); |
| |
| if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) { |
| printf("Incorrect expansion ROM header signature %04x\n", |
| le16_to_cpu(rom_header->signature)); |
| #ifndef CONFIG_VGA_BIOS_ADDR |
| /* Disable expansion ROM address decoding */ |
| dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address); |
| #endif |
| return -EINVAL; |
| } |
| |
| rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data)); |
| rom_vendor = le16_to_cpu(rom_data->vendor); |
| rom_device = le16_to_cpu(rom_data->device); |
| |
| debug("PCI ROM image, vendor ID %04x, device ID %04x,\n", |
| rom_vendor, rom_device); |
| |
| /* If the device id is mapped, a mismatch is expected */ |
| if ((pplat->vendor != rom_vendor || pplat->device != rom_device) && |
| (vendev == mapped_vendev)) { |
| printf("ID mismatch: vendor ID %04x, device ID %04x\n", |
| rom_vendor, rom_device); |
| /* Continue anyway */ |
| } |
| |
| rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo; |
| debug("PCI ROM image, Class Code %06x, Code Type %02x\n", |
| rom_class, rom_data->type); |
| |
| if (pplat->class != rom_class) { |
| debug("Class Code mismatch ROM %06x, dev %06x\n", |
| rom_class, pplat->class); |
| } |
| *hdrp = rom_header; |
| |
| return 0; |
| } |
| |
| /** |
| * pci_rom_load() - Load a ROM image and return a pointer to it |
| * |
| * @rom_header: Pointer to ROM image |
| * @ram_headerp: Returns a pointer to the image in RAM |
| * @allocedp: Returns true if @ram_headerp was allocated and needs |
| * to be freed |
| * Return: 0 if OK, -ve on error. Note that @allocedp is set up regardless of |
| * the error state. Even if this function returns an error, it may have |
| * allocated memory. |
| */ |
| static int pci_rom_load(struct pci_rom_header *rom_header, |
| struct pci_rom_header **ram_headerp, bool *allocedp) |
| { |
| struct pci_rom_data *rom_data; |
| unsigned int rom_size; |
| unsigned int image_size = 0; |
| void *target; |
| |
| *allocedp = false; |
| do { |
| /* Get next image, until we see an x86 version */ |
| rom_header = (struct pci_rom_header *)((void *)rom_header + |
| image_size); |
| |
| rom_data = (struct pci_rom_data *)((void *)rom_header + |
| le16_to_cpu(rom_header->data)); |
| |
| image_size = le16_to_cpu(rom_data->ilen) * 512; |
| } while ((rom_data->type != 0) && (rom_data->indicator == 0)); |
| |
| if (rom_data->type != 0) |
| return -EACCES; |
| |
| rom_size = rom_header->size * 512; |
| |
| #ifdef PCI_VGA_RAM_IMAGE_START |
| target = (void *)PCI_VGA_RAM_IMAGE_START; |
| #else |
| target = (void *)malloc(rom_size); |
| if (!target) |
| return -ENOMEM; |
| *allocedp = true; |
| #endif |
| if (target != rom_header) { |
| ulong start = get_timer(0); |
| |
| debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n", |
| rom_header, target, rom_size); |
| memcpy(target, rom_header, rom_size); |
| if (memcmp(target, rom_header, rom_size)) { |
| printf("VGA ROM copy failed\n"); |
| return -EFAULT; |
| } |
| debug("Copy took %lums\n", get_timer(start)); |
| } |
| *ram_headerp = target; |
| |
| return 0; |
| } |
| |
| struct vesa_state mode_info; |
| |
| void setup_video(struct screen_info *screen_info) |
| { |
| struct vesa_mode_info *vesa = &mode_info.vesa; |
| |
| /* Sanity test on VESA parameters */ |
| if (!vesa->x_resolution || !vesa->y_resolution) |
| return; |
| |
| screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB; |
| |
| screen_info->lfb_width = vesa->x_resolution; |
| screen_info->lfb_height = vesa->y_resolution; |
| screen_info->lfb_depth = vesa->bits_per_pixel; |
| screen_info->lfb_linelength = vesa->bytes_per_scanline; |
| screen_info->lfb_base = vesa->phys_base_ptr; |
| screen_info->lfb_size = |
| ALIGN(screen_info->lfb_linelength * screen_info->lfb_height, |
| 65536); |
| screen_info->lfb_size >>= 16; |
| screen_info->red_size = vesa->red_mask_size; |
| screen_info->red_pos = vesa->red_mask_pos; |
| screen_info->green_size = vesa->green_mask_size; |
| screen_info->green_pos = vesa->green_mask_pos; |
| screen_info->blue_size = vesa->blue_mask_size; |
| screen_info->blue_pos = vesa->blue_mask_pos; |
| screen_info->rsvd_size = vesa->reserved_mask_size; |
| screen_info->rsvd_pos = vesa->reserved_mask_pos; |
| } |
| |
| int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void), |
| int exec_method) |
| { |
| struct pci_child_plat *pplat = dev_get_parent_plat(dev); |
| struct pci_rom_header *rom = NULL, *ram = NULL; |
| int vesa_mode = -1; |
| bool emulate, alloced; |
| int ret; |
| |
| /* Only execute VGA ROMs */ |
| if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) { |
| debug("%s: Class %#x, should be %#x\n", __func__, pplat->class, |
| PCI_CLASS_DISPLAY_VGA); |
| return -ENODEV; |
| } |
| |
| if (!board_should_load_oprom(dev)) |
| return log_msg_ret("Should not load OPROM", -ENXIO); |
| |
| ret = pci_rom_probe(dev, &rom); |
| if (ret) |
| return log_msg_ret("pro", ret); |
| |
| ret = pci_rom_load(rom, &ram, &alloced); |
| if (ret) { |
| ret = log_msg_ret("ld", ret); |
| goto err; |
| } |
| |
| if (!board_should_run_oprom(dev)) { |
| ret = log_msg_ret("run", -ENXIO); |
| goto err; |
| } |
| |
| #if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \ |
| defined(CONFIG_FRAMEBUFFER_VESA_MODE) |
| vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE; |
| #endif |
| debug("Selected vesa mode 0x%x\n", vesa_mode); |
| |
| if (exec_method & PCI_ROM_USE_NATIVE) { |
| #ifdef CONFIG_X86 |
| emulate = false; |
| #else |
| if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) { |
| printf("BIOS native execution is only available on x86\n"); |
| ret = -ENOSYS; |
| goto err; |
| } |
| emulate = true; |
| #endif |
| } else { |
| #ifdef CONFIG_BIOSEMU |
| emulate = true; |
| #else |
| if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) { |
| printf("BIOS emulation not available - see CONFIG_BIOSEMU\n"); |
| ret = -ENOSYS; |
| goto err; |
| } |
| emulate = false; |
| #endif |
| } |
| |
| if (emulate) { |
| if (CONFIG_IS_ENABLED(BIOSEMU)) { |
| BE_VGAInfo *info; |
| |
| log_debug("Running video BIOS with emulator..."); |
| ret = biosemu_setup(dev, &info); |
| if (ret) |
| goto err; |
| biosemu_set_interrupt_handler(0x15, int15_handler); |
| ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info, |
| true, vesa_mode, &mode_info); |
| log_debug("done\n"); |
| if (ret) |
| goto err; |
| } |
| } else { |
| #if defined(CONFIG_X86) && (CONFIG_IS_ENABLED(X86_32BIT_INIT) || CONFIG_TPL) |
| log_debug("Running video BIOS..."); |
| bios_set_interrupt_handler(0x15, int15_handler); |
| |
| bios_run_on_x86(dev, (unsigned long)ram, vesa_mode, |
| &mode_info); |
| log_debug("done\n"); |
| #endif |
| } |
| debug("Final vesa mode %x\n", mode_info.video_mode); |
| ret = 0; |
| |
| err: |
| if (alloced) |
| free(ram); |
| return ret; |
| } |
| |
| int vesa_setup_video_priv(struct vesa_mode_info *vesa, u64 fb, |
| struct video_priv *uc_priv, |
| struct video_uc_plat *plat) |
| { |
| if (!vesa->x_resolution) |
| return log_msg_ret("No x resolution", -ENXIO); |
| uc_priv->xsize = vesa->x_resolution; |
| uc_priv->ysize = vesa->y_resolution; |
| uc_priv->line_length = vesa->bytes_per_scanline; |
| switch (vesa->bits_per_pixel) { |
| case 32: |
| case 24: |
| uc_priv->bpix = VIDEO_BPP32; |
| break; |
| case 16: |
| uc_priv->bpix = VIDEO_BPP16; |
| break; |
| default: |
| return -EPROTONOSUPPORT; |
| } |
| |
| /* Use double buffering if enabled */ |
| if (IS_ENABLED(CONFIG_VIDEO_COPY) && plat->base) |
| plat->copy_base = fb; |
| else |
| plat->base = fb; |
| log_debug("base = %lx, copy_base = %lx\n", plat->base, plat->copy_base); |
| plat->size = vesa->bytes_per_scanline * vesa->y_resolution; |
| |
| return 0; |
| } |
| |
| int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void)) |
| { |
| struct video_uc_plat *plat = dev_get_uclass_plat(dev); |
| struct video_priv *uc_priv = dev_get_uclass_priv(dev); |
| int ret; |
| |
| /* If we are running from EFI or coreboot, this can't work */ |
| if (!ll_boot_init()) { |
| printf("Not available (previous bootloader prevents it)\n"); |
| return -EPERM; |
| } |
| |
| /* In U-Boot proper, collect the information added by SPL (see below) */ |
| if (IS_ENABLED(CONFIG_SPL_VIDEO) && spl_phase() > PHASE_SPL && |
| CONFIG_IS_ENABLED(BLOBLIST)) { |
| struct video_handoff *ho; |
| |
| ho = bloblist_find(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho)); |
| if (!ho) |
| return log_msg_ret("blf", -ENOENT); |
| plat->base = ho->fb; |
| plat->size = ho->size; |
| uc_priv->xsize = ho->xsize; |
| uc_priv->ysize = ho->ysize; |
| uc_priv->line_length = ho->line_length; |
| uc_priv->bpix = ho->bpix; |
| } else { |
| bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display"); |
| ret = dm_pci_run_vga_bios(dev, int15_handler, |
| PCI_ROM_USE_NATIVE | |
| PCI_ROM_ALLOW_FALLBACK); |
| bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD); |
| if (ret) { |
| debug("failed to run video BIOS: %d\n", ret); |
| return ret; |
| } |
| |
| ret = vesa_setup_video_priv(&mode_info.vesa, |
| mode_info.vesa.phys_base_ptr, |
| uc_priv, plat); |
| if (ret) { |
| if (ret == -ENFILE) { |
| /* |
| * See video-uclass.c for how to set up reserved |
| * memory in your video driver |
| */ |
| log_err("CONFIG_VIDEO_COPY enabled but driver '%s' set up no reserved memory\n", |
| dev->driver->name); |
| } |
| |
| debug("No video mode configured\n"); |
| return ret; |
| } |
| } |
| |
| printf("Video: %dx%dx%d\n", uc_priv->xsize, uc_priv->ysize, |
| mode_info.vesa.bits_per_pixel); |
| |
| /* In SPL, store the information for use by U-Boot proper */ |
| if (spl_phase() == PHASE_SPL && CONFIG_IS_ENABLED(BLOBLIST)) { |
| struct video_handoff *ho; |
| |
| ho = bloblist_add(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho), 0); |
| if (!ho) |
| return log_msg_ret("blc", -ENOMEM); |
| |
| ho->fb = plat->base; |
| ho->size = plat->size; |
| ho->xsize = uc_priv->xsize; |
| ho->ysize = uc_priv->ysize; |
| ho->line_length = uc_priv->line_length; |
| ho->bpix = uc_priv->bpix; |
| } |
| |
| return 0; |
| } |