bc17d8f4ac
If the BIOS emulator is not available, allow use of native execution if available, and vice versa. This can be controlled by the caller. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
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*
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* Vesa frame buffer driver for x86
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*
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* Copyright (C) 2014 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <pci_rom.h>
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#include <video_fb.h>
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#include <vbe.h>
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/*
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* The Graphic Device
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*/
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GraphicDevice ctfb;
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/* Devices to allow - only the last one works fully */
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struct pci_device_id vesa_video_ids[] = {
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{ .vendor = 0x102b, .device = 0x0525 },
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{ .vendor = 0x1002, .device = 0x5159 },
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{ .vendor = 0x1002, .device = 0x4752 },
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{ .vendor = 0x1002, .device = 0x5452 },
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{ .vendor = 0x8086, .device = 0x0f31 },
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{},
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};
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void *video_hw_init(void)
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{
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GraphicDevice *gdev = &ctfb;
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int bits_per_pixel;
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pci_dev_t dev;
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int ret;
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printf("Video: ");
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if (vbe_get_video_info(gdev)) {
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/* TODO: Should we look these up by class? */
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dev = pci_find_devices(vesa_video_ids, 0);
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if (dev == -1) {
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printf("no card detected\n");
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return NULL;
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}
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ret = pci_run_vga_bios(dev, NULL, PCI_ROM_USE_NATIVE |
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PCI_ROM_ALLOW_FALLBACK);
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if (ret) {
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printf("failed to run video BIOS: %d\n", ret);
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return NULL;
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}
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}
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if (vbe_get_video_info(gdev)) {
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printf("No video mode configured\n");
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return NULL;
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}
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bits_per_pixel = gdev->gdfBytesPP * 8;
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sprintf(gdev->modeIdent, "%dx%dx%d", gdev->winSizeX, gdev->winSizeY,
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bits_per_pixel);
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printf("%s\n", gdev->modeIdent);
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debug("Frame buffer at %x\n", gdev->pciBase);
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return (void *)gdev;
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}
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