--- /dev/null
+/*
+ * 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 *)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;
+}
projects / u-boot / commitdiff