| /* |
| * 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> |
| |
| * SPDX-License-Identifier: GPL-2.0 |
| */ |
| |
| #include <common.h> |
| #include <bios_emul.h> |
| #include <errno.h> |
| #include <malloc.h> |
| #include <pci.h> |
| #include <pci_rom.h> |
| #include <vbe.h> |
| #include <video_fb.h> |
| |
| #ifdef CONFIG_HAVE_ACPI_RESUME |
| #include <asm/acpi.h> |
| #endif |
| |
| __weak bool board_should_run_oprom(pci_dev_t dev) |
| { |
| return true; |
| } |
| |
| static bool should_load_oprom(pci_dev_t dev) |
| { |
| #ifdef CONFIG_HAVE_ACPI_RESUME |
| if (acpi_get_slp_type() == 3) |
| return false; |
| #endif |
| if (IS_ENABLED(CONFIG_ALWAYS_LOAD_OPROM)) |
| return 1; |
| if (board_should_run_oprom(dev)) |
| return 1; |
| |
| return 0; |
| } |
| |
| __weak uint32_t board_map_oprom_vendev(uint32_t vendev) |
| { |
| return vendev; |
| } |
| |
| static int pci_rom_probe(pci_dev_t dev, uint class, |
| struct pci_rom_header **hdrp) |
| { |
| struct pci_rom_header *rom_header; |
| struct pci_rom_data *rom_data; |
| u16 vendor, device; |
| u32 vendev; |
| u32 mapped_vendev; |
| u32 rom_address; |
| |
| pci_read_config_word(dev, PCI_VENDOR_ID, &vendor); |
| pci_read_config_word(dev, PCI_DEVICE_ID, &device); |
| vendev = vendor << 16 | device; |
| mapped_vendev = board_map_oprom_vendev(vendev); |
| if (vendev != mapped_vendev) |
| debug("Device ID mapped to %#08x\n", mapped_vendev); |
| |
| #ifdef CONFIG_X86_OPTION_ROM_ADDR |
| rom_address = CONFIG_X86_OPTION_ROM_ADDR; |
| #else |
| pci_write_config_dword(dev, PCI_ROM_ADDRESS, (u32)PCI_ROM_ADDRESS_MASK); |
| pci_read_config_dword(dev, PCI_ROM_ADDRESS, &rom_address); |
| if (rom_address == 0x00000000 || rom_address == 0xffffffff) { |
| debug("%s: rom_address=%x\n", __func__, rom_address); |
| return -ENOENT; |
| } |
| |
| /* Enable expansion ROM address decoding. */ |
| pci_write_config_dword(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 *)(u64)rom_address; |
| |
| debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n", |
| le32_to_cpu(rom_header->signature), |
| rom_header->size * 512, le32_to_cpu(rom_header->data)); |
| |
| if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) { |
| printf("Incorrect expansion ROM header signature %04x\n", |
| le32_to_cpu(rom_header->signature)); |
| return -EINVAL; |
| } |
| |
| rom_data = (((void *)rom_header) + le32_to_cpu(rom_header->data)); |
| |
| debug("PCI ROM image, vendor ID %04x, device ID %04x,\n", |
| rom_data->vendor, rom_data->device); |
| |
| /* If the device id is mapped, a mismatch is expected */ |
| if ((vendor != rom_data->vendor || device != rom_data->device) && |
| (vendev == mapped_vendev)) { |
| printf("ID mismatch: vendor ID %04x, device ID %04x\n", |
| rom_data->vendor, rom_data->device); |
| return -EPERM; |
| } |
| |
| debug("PCI ROM image, Class Code %04x%02x, Code Type %02x\n", |
| rom_data->class_hi, rom_data->class_lo, rom_data->type); |
| |
| if (class != ((rom_data->class_hi << 8) | rom_data->class_lo)) { |
| debug("Class Code mismatch ROM %08x, dev %08x\n", |
| (rom_data->class_hi << 8) | rom_data->class_lo, |
| class); |
| } |
| *hdrp = rom_header; |
| |
| return 0; |
| } |
| |
| int pci_rom_load(uint16_t class, struct pci_rom_header *rom_header, |
| struct pci_rom_header **ram_headerp) |
| { |
| struct pci_rom_data *rom_data; |
| unsigned int rom_size; |
| unsigned int image_size = 0; |
| void *target; |
| |
| 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 + |
| le32_to_cpu(rom_header->data)); |
| |
| image_size = le32_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; |
| |
| target = (void *)PCI_VGA_RAM_IMAGE_START; |
| if (target != rom_header) { |
| 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; |
| } |
| } |
| *ram_headerp = target; |
| |
| return 0; |
| } |
| |
| static struct vbe_mode_info mode_info; |
| |
| int vbe_get_video_info(struct graphic_device *gdev) |
| { |
| #ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE |
| struct vesa_mode_info *vesa = &mode_info.vesa; |
| |
| gdev->winSizeX = vesa->x_resolution; |
| gdev->winSizeY = vesa->y_resolution; |
| |
| gdev->plnSizeX = vesa->x_resolution; |
| gdev->plnSizeY = vesa->y_resolution; |
| |
| gdev->gdfBytesPP = vesa->bits_per_pixel / 8; |
| |
| switch (vesa->bits_per_pixel) { |
| case 24: |
| gdev->gdfIndex = GDF_32BIT_X888RGB; |
| break; |
| case 16: |
| gdev->gdfIndex = GDF_16BIT_565RGB; |
| break; |
| default: |
| gdev->gdfIndex = GDF__8BIT_INDEX; |
| break; |
| } |
| |
| gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS; |
| gdev->pciBase = vesa->phys_base_ptr; |
| |
| gdev->frameAdrs = vesa->phys_base_ptr; |
| gdev->memSize = vesa->bytes_per_scanline * vesa->y_resolution; |
| |
| gdev->vprBase = vesa->phys_base_ptr; |
| gdev->cprBase = vesa->phys_base_ptr; |
| |
| return 0; |
| #else |
| return -ENOSYS; |
| #endif |
| } |
| |
| int pci_run_vga_bios(pci_dev_t dev, int (*int15_handler)(void), bool emulate) |
| { |
| struct pci_rom_header *rom, *ram; |
| int vesa_mode = -1; |
| uint16_t class; |
| int ret; |
| |
| /* Only execute VGA ROMs */ |
| pci_read_config_word(dev, PCI_CLASS_DEVICE, &class); |
| if ((class ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) { |
| debug("%s: Class %#x, should be %#x\n", __func__, class, |
| PCI_CLASS_DISPLAY_VGA); |
| return -ENODEV; |
| } |
| |
| if (!should_load_oprom(dev)) |
| return -ENXIO; |
| |
| ret = pci_rom_probe(dev, class, &rom); |
| if (ret) |
| return ret; |
| |
| ret = pci_rom_load(class, rom, &ram); |
| if (ret) |
| return ret; |
| |
| if (!board_should_run_oprom(dev)) |
| return -ENXIO; |
| |
| #if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \ |
| defined(CONFIG_FRAMEBUFFER_VESA_MODE) |
| vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE; |
| #endif |
| debug("Selected vesa mode %d\b", vesa_mode); |
| if (emulate) { |
| #ifdef CONFIG_BIOSEMU |
| BE_VGAInfo *info; |
| |
| ret = biosemu_setup(dev, &info); |
| if (ret) |
| return ret; |
| biosemu_set_interrupt_handler(0x15, int15_handler); |
| ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info, true, |
| vesa_mode, &mode_info); |
| if (ret) |
| return ret; |
| #else |
| printf("BIOS emulation not available - see CONFIG_BIOSEMU\n"); |
| return -ENOSYS; |
| #endif |
| } else { |
| #ifdef CONFIG_X86 |
| bios_set_interrupt_handler(0x15, int15_handler); |
| |
| bios_run_on_x86(dev, (unsigned long)ram, vesa_mode, |
| &mode_info); |
| #else |
| printf("BIOS native execution is only available on x86\n"); |
| return -ENOSYS; |
| #endif |
| } |
| debug("Final vesa mode %d\n", mode_info.video_mode); |
| |
| return 0; |
| } |