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efi: Support a 64-bit frame buffer address

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The current vesa structure only provides a 32-bit value for the frame
buffer. Many modern machines use an address outside the range.

It is still useful to have this common struct, but add a separate
frame-buffer address as well.

Add a comment for vesa_setup_video_priv() while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-03-10 12:47:13 -08:00 committed by Heinrich Schuchardt
parent 57fa418224
commit 644e61448c
5 changed files with 45 additions and 19 deletions
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2
arch/x86/lib/fsp/fsp_graphics.c
View file

@ -106,7 +106,7 @@ static int fsp_video_probe(struct udevice *dev)
vesa->phys_base_ptr = dm_pci_read_bar32(dev, 2);
gd->fb_base = vesa->phys_base_ptr;
ret = vesa_setup_video_priv(vesa, uc_priv, plat);
ret = vesa_setup_video_priv(vesa, vesa->phys_base_ptr, uc_priv, plat);
if (ret)
goto err;

10
drivers/pci/pci_rom.c
View file

@ -325,7 +325,7 @@ err:
return ret;
}
int vesa_setup_video_priv(struct vesa_mode_info *vesa,
int vesa_setup_video_priv(struct vesa_mode_info *vesa, u64 fb,
struct video_priv *uc_priv,
struct video_uc_plat *plat)
{
@ -348,9 +348,9 @@ int vesa_setup_video_priv(struct vesa_mode_info *vesa,
/* Use double buffering if enabled */
if (IS_ENABLED(CONFIG_VIDEO_COPY) && plat->base)
plat->copy_base = vesa->phys_base_ptr;
plat->copy_base = fb;
else
plat->base = vesa->phys_base_ptr;
plat->base = fb;
log_debug("base = %lx, copy_base = %lx\n", plat->base, plat->copy_base);
plat->size = vesa->bytes_per_scanline * vesa->y_resolution;
@ -377,7 +377,9 @@ int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void))
return ret;
}
ret = vesa_setup_video_priv(&mode_info.vesa, uc_priv, plat);
ret = vesa_setup_video_priv(&mode_info.vesa,
mode_info.vesa.phys_base_ptr, uc_priv,
plat);
if (ret) {
if (ret == -ENFILE) {
/*

2
drivers/video/coreboot.c
View file

@ -57,7 +57,7 @@ static int coreboot_video_probe(struct udevice *dev)
goto err;
}
ret = vesa_setup_video_priv(vesa, uc_priv, plat);
ret = vesa_setup_video_priv(vesa, vesa->phys_base_ptr, uc_priv, plat);
if (ret) {
ret = log_msg_ret("setup", ret);
goto err;

34
drivers/video/efi.c
View file

@ -5,6 +5,8 @@
* EFI framebuffer driver based on GOP
*/
#define LOG_CATEGORY LOGC_EFI
#include <common.h>
#include <dm.h>
#include <efi_api.h>
@ -56,11 +58,12 @@ static void efi_find_pixel_bits(u32 mask, u8 *pos, u8 *size)
* Gets info from the graphics-output protocol
*
* @vesa: Place to put the mode information
* @fbp: Returns the address of the frame buffer
* @infop: Returns a pointer to the mode info
* Returns: 0 if OK, -ENOSYS if boot services are not available, -ENOTSUPP if
* the protocol is not supported by EFI
*/
static int get_mode_info(struct vesa_mode_info *vesa,
static int get_mode_info(struct vesa_mode_info *vesa, u64 *fbp,
struct efi_gop_mode_info **infop)
{
efi_guid_t efi_gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
@ -74,9 +77,13 @@ static int get_mode_info(struct vesa_mode_info *vesa,
ret = boot->locate_protocol(&efi_gop_guid, NULL, (void **)&gop);
if (ret)
return log_msg_ret("prot", -ENOTSUPP);
mode = gop->mode;
log_debug("maxmode %u, mode %u, info %p, size %lx, fb %lx, fb_size %lx\n",
mode->max_mode, mode->mode, mode->info, mode->info_size,
(ulong)mode->fb_base, (ulong)mode->fb_size);
vesa->phys_base_ptr = mode->fb_base;
*fbp = mode->fb_base;
vesa->x_resolution = mode->info->width;
vesa->y_resolution = mode->info->height;
*infop = mode->info;
@ -91,10 +98,11 @@ static int get_mode_info(struct vesa_mode_info *vesa,
* it into a vesa structure. It also returns the mode information.
*
* @vesa: Place to put the mode information
* @fbp: Returns the address of the frame buffer
* @infop: Returns a pointer to the mode info
* Returns: 0 if OK, -ve on error
*/
static int get_mode_from_entry(struct vesa_mode_info *vesa,
static int get_mode_from_entry(struct vesa_mode_info *vesa, u64 *fbp,
struct efi_gop_mode_info **infop)
{
struct efi_gop_mode *mode;
@ -107,6 +115,7 @@ static int get_mode_from_entry(struct vesa_mode_info *vesa,
return ret;
}
vesa->phys_base_ptr = mode->fb_base;
*fbp = mode->fb_base;
vesa->x_resolution = mode->info->width;
vesa->y_resolution = mode->info->height;
*infop = mode->info;
@ -114,16 +123,17 @@ static int get_mode_from_entry(struct vesa_mode_info *vesa,
return 0;
}
static int save_vesa_mode(struct vesa_mode_info *vesa)
static int save_vesa_mode(struct vesa_mode_info *vesa, u64 *fbp)
{
const struct efi_framebuffer *fbinfo;
struct efi_gop_mode_info *info;
int ret;
printf("start\n");
if (IS_ENABLED(CONFIG_EFI_APP))
ret = get_mode_info(vesa, &info);
ret = get_mode_info(vesa, fbp, &info);
else
ret = get_mode_from_entry(vesa, &info);
ret = get_mode_from_entry(vesa, fbp, &info);
if (ret) {
printf("EFI graphics output protocol not found (err=%dE)\n",
ret);
@ -163,8 +173,7 @@ static int save_vesa_mode(struct vesa_mode_info *vesa)
vesa->bytes_per_scanline = (info->pixels_per_scanline *
vesa->bits_per_pixel) / 8;
} else {
debug("efi set unknown framebuffer format: %d\n",
info->pixel_format);
log_err("Unknown framebuffer format: %d\n", info->pixel_format);
return -EINVAL;
}
@ -176,19 +185,20 @@ static int efi_video_probe(struct udevice *dev)
struct video_uc_plat *plat = dev_get_uclass_plat(dev);
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
struct vesa_mode_info *vesa = &mode_info.vesa;
u64 fb;
int ret;
/* Initialize vesa_mode_info structure */
ret = save_vesa_mode(vesa);
ret = save_vesa_mode(vesa, &fb);
if (ret)
goto err;
ret = vesa_setup_video_priv(vesa, uc_priv, plat);
ret = vesa_setup_video_priv(vesa, fb, uc_priv, plat);
if (ret)
goto err;
printf("Video: %dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
vesa->bits_per_pixel);
printf("Video: %dx%dx%d @ %lx\n", uc_priv->xsize, uc_priv->ysize,
vesa->bits_per_pixel, (ulong)fb);
return 0;

16
include/vesa.h
View file

@ -108,7 +108,21 @@ extern struct vesa_state mode_info;
struct video_priv;
struct video_uc_plat;
int vesa_setup_video_priv(struct vesa_mode_info *vesa,
/**
* vesa_setup_video_priv() - Set up a video device using VESA information
*
* The vesa struct is used by various x86 drivers, so this is a common function
* to use it to set up the video.
*
* @vesa: Vesa information to use (vesa->phys_base_ptr is ignored)
* @fb: Frame buffer address (since vesa->phys_base_ptr is only 32 bits)
* @uc_priv: Video device's uclass-private information
* @plat: Video devices's uclass-private platform data
* Returns: 0 if OK, -ENXIO if the x resolution is 0, -EEPROTONOSUPPORT if the
* pixel format is not supported
*/
int vesa_setup_video_priv(struct vesa_mode_info *vesa, u64 fb,
struct video_priv *uc_priv,
struct video_uc_plat *plat);
int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void));