mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 22:52:18 +00:00
17c40ad963
Add a basic driver for the coreboot framebuffer. Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/*
|
|
* coreboot Framebuffer driver.
|
|
*
|
|
* Copyright (C) 2011 The Chromium OS authors
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/tables.h>
|
|
#include <asm/arch/sysinfo.h>
|
|
#include <video_fb.h>
|
|
#include "videomodes.h"
|
|
|
|
/*
|
|
* The Graphic Device
|
|
*/
|
|
GraphicDevice ctfb;
|
|
|
|
static int parse_coreboot_table_fb(GraphicDevice *gdev)
|
|
{
|
|
struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
|
|
|
|
/* If there is no framebuffer structure, bail out and keep
|
|
* running on the serial console.
|
|
*/
|
|
if (!fb)
|
|
return 0;
|
|
|
|
gdev->winSizeX = fb->x_resolution;
|
|
gdev->winSizeY = fb->y_resolution;
|
|
|
|
gdev->plnSizeX = fb->x_resolution;
|
|
gdev->plnSizeY = fb->y_resolution;
|
|
|
|
gdev->gdfBytesPP = fb->bits_per_pixel / 8;
|
|
|
|
switch (fb->bits_per_pixel) {
|
|
case 24:
|
|
gdev->gdfIndex = GDF_32BIT_X888RGB;
|
|
break;
|
|
case 16:
|
|
gdev->gdfIndex = GDF_16BIT_565RGB;
|
|
break;
|
|
default:
|
|
gdev->gdfIndex = GDF__8BIT_INDEX;
|
|
break;
|
|
}
|
|
|
|
gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
|
|
gdev->pciBase = (unsigned int)fb->physical_address;
|
|
|
|
gdev->frameAdrs = (unsigned int)fb->physical_address;
|
|
gdev->memSize = fb->bytes_per_line * fb->y_resolution;
|
|
|
|
gdev->vprBase = (unsigned int)fb->physical_address;
|
|
gdev->cprBase = (unsigned int)fb->physical_address;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void *video_hw_init(void)
|
|
{
|
|
GraphicDevice *gdev = &ctfb;
|
|
int bits_per_pixel;
|
|
|
|
printf("Video: ");
|
|
|
|
if (!parse_coreboot_table_fb(gdev)) {
|
|
printf("No video mode configured in coreboot!\n");
|
|
return NULL;
|
|
}
|
|
|
|
bits_per_pixel = gdev->gdfBytesPP * 8;
|
|
|
|
/* fill in Graphic device struct */
|
|
sprintf(gdev->modeIdent, "%dx%dx%d", gdev->winSizeX, gdev->winSizeY,
|
|
bits_per_pixel);
|
|
printf("%s\n", gdev->modeIdent);
|
|
|
|
memset((void *)gdev->pciBase, 0,
|
|
gdev->winSizeX * gdev->winSizeY * gdev->gdfBytesPP);
|
|
|
|
return (void *)gdev;
|
|
}
|