13b2bfce51
This adds a DM driver for coreboot framebuffer device. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <vbe.h>
|
|
#include <video.h>
|
|
#include <asm/arch/sysinfo.h>
|
|
|
|
static int save_vesa_mode(struct cb_framebuffer *fb,
|
|
struct vesa_mode_info *vesa)
|
|
{
|
|
/*
|
|
* If there is no framebuffer structure, bail out and keep
|
|
* running on the serial console.
|
|
*/
|
|
if (!fb)
|
|
return -ENXIO;
|
|
|
|
vesa->x_resolution = fb->x_resolution;
|
|
vesa->y_resolution = fb->y_resolution;
|
|
vesa->bits_per_pixel = fb->bits_per_pixel;
|
|
vesa->bytes_per_scanline = fb->bytes_per_line;
|
|
vesa->phys_base_ptr = fb->physical_address;
|
|
vesa->red_mask_size = fb->red_mask_size;
|
|
vesa->red_mask_pos = fb->red_mask_pos;
|
|
vesa->green_mask_size = fb->green_mask_size;
|
|
vesa->green_mask_pos = fb->green_mask_pos;
|
|
vesa->blue_mask_size = fb->blue_mask_size;
|
|
vesa->blue_mask_pos = fb->blue_mask_pos;
|
|
vesa->reserved_mask_size = fb->reserved_mask_size;
|
|
vesa->reserved_mask_pos = fb->reserved_mask_pos;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int coreboot_video_probe(struct udevice *dev)
|
|
{
|
|
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
|
|
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
|
|
struct vesa_mode_info *vesa = &mode_info.vesa;
|
|
int ret;
|
|
|
|
printf("Video: ");
|
|
|
|
/* Initialize vesa_mode_info structure */
|
|
ret = save_vesa_mode(fb, vesa);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = vbe_setup_video_priv(vesa, uc_priv, plat);
|
|
if (ret)
|
|
goto err;
|
|
|
|
printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
|
|
vesa->bits_per_pixel);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
printf("No video mode configured in coreboot!\n");
|
|
return ret;
|
|
}
|
|
|
|
static const struct udevice_id coreboot_video_ids[] = {
|
|
{ .compatible = "coreboot-fb" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(coreboot_video) = {
|
|
.name = "coreboot_video",
|
|
.id = UCLASS_VIDEO,
|
|
.of_match = coreboot_video_ids,
|
|
.probe = coreboot_video_probe,
|
|
};
|