mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <vbe.h>
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#include <video.h>
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#include <asm/fsp/fsp_support.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct pixel {
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u8 pos;
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u8 size;
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};
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static const struct fsp_framebuffer {
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struct pixel red;
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struct pixel green;
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struct pixel blue;
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struct pixel rsvd;
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} fsp_framebuffer_format_map[] = {
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[pixel_rgbx_8bpc] = { {0, 8}, {8, 8}, {16, 8}, {24, 8} },
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[pixel_bgrx_8bpc] = { {16, 8}, {8, 8}, {0, 8}, {24, 8} },
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};
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static int save_vesa_mode(struct vesa_mode_info *vesa)
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{
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const struct hob_graphics_info *ginfo;
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const struct fsp_framebuffer *fbinfo;
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ginfo = fsp_get_graphics_info(gd->arch.hob_list, NULL);
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/*
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* If there is no graphics info structure, bail out and keep
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* running on the serial console.
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*
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* Note: on some platforms (eg: Braswell), the FSP will not produce
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* the graphics info HOB unless you plug some cables to the display
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* interface (eg: HDMI) on the board.
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*/
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if (!ginfo) {
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debug("FSP graphics hand-off block not found\n");
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return -ENXIO;
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}
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vesa->x_resolution = ginfo->width;
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vesa->y_resolution = ginfo->height;
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vesa->bits_per_pixel = 32;
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vesa->bytes_per_scanline = ginfo->pixels_per_scanline * 4;
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vesa->phys_base_ptr = ginfo->fb_base;
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if (ginfo->pixel_format >= pixel_bitmask) {
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debug("FSP set unknown framebuffer format: %d\n",
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ginfo->pixel_format);
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return -EINVAL;
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}
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fbinfo = &fsp_framebuffer_format_map[ginfo->pixel_format];
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vesa->red_mask_size = fbinfo->red.size;
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vesa->red_mask_pos = fbinfo->red.pos;
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vesa->green_mask_size = fbinfo->green.size;
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vesa->green_mask_pos = fbinfo->green.pos;
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vesa->blue_mask_size = fbinfo->blue.size;
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vesa->blue_mask_pos = fbinfo->blue.pos;
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vesa->reserved_mask_size = fbinfo->rsvd.size;
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vesa->reserved_mask_pos = fbinfo->rsvd.pos;
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return 0;
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}
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static int fsp_video_probe(struct udevice *dev)
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{
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struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
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struct video_priv *uc_priv = dev_get_uclass_priv(dev);
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struct vesa_mode_info *vesa = &mode_info.vesa;
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int ret;
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printf("Video: ");
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/* Initialize vesa_mode_info structure */
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ret = save_vesa_mode(vesa);
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if (ret)
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goto err;
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/*
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* The framebuffer base address in the FSP graphics info HOB reflects
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* the value assigned by the FSP. After PCI enumeration the framebuffer
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* base address may be relocated. Let's get the updated one from device.
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*
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* For IGD, it seems to be always on BAR2.
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*/
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vesa->phys_base_ptr = dm_pci_read_bar32(dev, 2);
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ret = vbe_setup_video_priv(vesa, uc_priv, plat);
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if (ret)
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goto err;
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printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
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vesa->bits_per_pixel);
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return 0;
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err:
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printf("No video mode configured in FSP!\n");
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return ret;
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}
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static const struct udevice_id fsp_video_ids[] = {
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{ .compatible = "fsp-fb" },
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{ }
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};
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U_BOOT_DRIVER(fsp_video) = {
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.name = "fsp_video",
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.id = UCLASS_VIDEO,
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.of_match = fsp_video_ids,
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.probe = fsp_video_probe,
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};
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static struct pci_device_id fsp_video_supported[] = {
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{ PCI_DEVICE_CLASS(PCI_CLASS_DISPLAY_VGA << 8, 0xffff00) },
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{ },
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};
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U_BOOT_PCI_DEVICE(fsp_video, fsp_video_supported);
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