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minnowmax: Enable the copy framebuffer 

Update the video driver to support this feature and enable it on
minnowmax to speed up the display.

With this change, the time taken to print the environment to the display
without CONFIG_CONSOLE_SCROLL_LINES is reduced from over 13 seconds to
300ms, at 1280x1024.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-07-02 21:12:36 -06:00 committed by Bin Meng
parent a67b0db24e
commit 6c74ee30bb
2 changed files with 30 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
configs/minnowmax_defconfig
View File

@ -59,7 +59,7 @@ CONFIG_RTL8169=y
CONFIG_SPI=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
CONFIG_VIDEO_COPY=y
CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
CONFIG_FRAMEBUFFER_VESA_MODE_11B=y
CONFIG_CONSOLE_SCROLL_LINES=5
# CONFIG_GZIP is not set

30
drivers/video/vesa.c
View File

@ -5,12 +5,39 @@
#include <common.h>
#include <dm.h>
#include <log.h>
#include <pci.h>
#include <vbe.h>
#include <video.h>
#include <asm/mtrr.h>
static int vesa_video_probe(struct udevice *dev)
{
return vbe_setup_video(dev, NULL);
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
ulong fbbase;
int ret;
ret = vbe_setup_video(dev, NULL);
if (ret)
return log_ret(ret);
/* Use write-combining for the graphics memory, 256MB */
fbbase = IS_ENABLED(CONFIG_VIDEO_COPY) ? plat->copy_base : plat->base;
mtrr_add_request(MTRR_TYPE_WRCOMB, fbbase, 256 << 20);
mtrr_commit(true);
return 0;
}
static int vesa_video_bind(struct udevice *dev)
{
struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
/* Set the maximum supported resolution */
uc_plat->size = 2560 * 1600 * 4;
log_debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
return 0;
}
static const struct udevice_id vesa_video_ids[] = {
@ -22,6 +49,7 @@ U_BOOT_DRIVER(vesa_video) = {
.name = "vesa_video",
.id = UCLASS_VIDEO,
.of_match = vesa_video_ids,
.bind = vesa_video_bind,
.probe = vesa_video_probe,
};