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x86: Pass video settings from SPL to U-Boot proper

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When video is set up in SPL, U-Boot proper needs to use the correct
parameters so it can write to the display.

Put these in a bloblist so they are available to U-Boot proper.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2023-07-15 21:38:59 -06:00 committed by Bin Meng
parent 5345700d2a
commit 03fe79c091
4 changed files with 83 additions and 21 deletions
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1
common/bloblist.c
View file

@ -51,6 +51,7 @@ static struct tag_name {
/* BLOBLISTT_PROJECT_AREA */
{ BLOBLISTT_U_BOOT_SPL_HANDOFF, "SPL hand-off" },
{ BLOBLISTT_U_BOOT_VIDEO, "SPL video handoff" },
/* BLOBLISTT_VENDOR_AREA */
};

46
drivers/pci/pci_rom.c
View file

@ -26,6 +26,7 @@
#include <common.h>
#include <bios_emul.h>
#include <bloblist.h>
#include <bootstage.h>
#include <dm.h>
#include <errno.h>
@ -34,6 +35,7 @@
#include <malloc.h>
#include <pci.h>
#include <pci_rom.h>
#include <spl.h>
#include <vesa.h>
#include <video.h>
#include <acpi/acpi_s3.h>
@ -374,8 +376,25 @@ int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void))
printf("Not available (previous bootloader prevents it)\n");
return -EPERM;
}
/* In U-Boot proper, collect the information added by SPL (see below) */
if (IS_ENABLED(CONFIG_SPL_VIDEO) && spl_phase() > PHASE_SPL &&
CONFIG_IS_ENABLED(BLOBLIST)) {
struct video_handoff *ho;
ho = bloblist_find(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho));
if (!ho)
return log_msg_ret("blf", -ENOENT);
plat->base = ho->fb;
plat->size = ho->size;
uc_priv->xsize = ho->xsize;
uc_priv->ysize = ho->ysize;
uc_priv->line_length = ho->line_length;
uc_priv->bpix = ho->bpix;
} else {
bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
ret = dm_pci_run_vga_bios(dev, int15_handler, PCI_ROM_USE_NATIVE |
ret = dm_pci_run_vga_bios(dev, int15_handler,
PCI_ROM_USE_NATIVE |
PCI_ROM_ALLOW_FALLBACK);
bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
if (ret) {
@ -384,13 +403,13 @@ int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void))
}
ret = vesa_setup_video_priv(&mode_info.vesa,
mode_info.vesa.phys_base_ptr, uc_priv,
plat);
mode_info.vesa.phys_base_ptr,
uc_priv, plat);
if (ret) {
if (ret == -ENFILE) {
/*
* See video-uclass.c for how to set up reserved memory
* in your video driver
* See video-uclass.c for how to set up reserved
* memory in your video driver
*/
log_err("CONFIG_VIDEO_COPY enabled but driver '%s' set up no reserved memory\n",
dev->driver->name);
@ -399,9 +418,26 @@ int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void))
debug("No video mode configured\n");
return ret;
}
}
printf("Video: %dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
mode_info.vesa.bits_per_pixel);
/* In SPL, store the information for use by U-Boot proper */
if (spl_phase() == PHASE_SPL && CONFIG_IS_ENABLED(BLOBLIST)) {
struct video_handoff *ho;
ho = bloblist_add(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho), 0);
if (!ho)
return log_msg_ret("blc", -ENOMEM);
ho->fb = plat->base;
ho->size = plat->size;
ho->xsize = uc_priv->xsize;
ho->ysize = uc_priv->ysize;
ho->line_length = uc_priv->line_length;
ho->bpix = uc_priv->bpix;
}
return 0;
}

1
include/bloblist.h
View file

@ -113,6 +113,7 @@ enum bloblist_tag_t {
BLOBLISTT_PROJECT_AREA = 0x8000,
BLOBLISTT_U_BOOT_SPL_HANDOFF = 0x8000, /* Hand-off info from SPL */
BLOBLISTT_VBE = 0x8001, /* VBE per-phase state */
BLOBLISTT_U_BOOT_VIDEO = 0x8002, /* Video information from SPL */
/*
* Vendor-specific tags are permitted here. Projects can be open source

24
include/video.h
View file

@ -134,6 +134,30 @@ struct video_ops {
#define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops)
/**
* struct video_handoff - video information passed from SPL
*
* This is used when video is set up by SPL, to provide the details to U-Boot
* proper.
*
* @fb: Base address of frame buffer, 0 if not yet known
* @size: Frame-buffer size, in bytes
* @xsize: Number of pixel columns (e.g. 1366)
* @ysize: Number of pixels rows (e.g.. 768)
* @line_length: Length of each frame buffer line, in bytes. This can be
* set by the driver, but if not, the uclass will set it after
* probing
* @bpix: Encoded bits per pixel (enum video_log2_bpp)
*/
struct video_handoff {
u64 fb;
u32 size;
u16 xsize;
u16 ysize;
u32 line_length;
u8 bpix;
};
/** enum colour_idx - the 16 colors supported by consoles */
enum colour_idx {
VID_BLACK = 0,