diff options
author | Stefan Reinauer <reinauer@chromium.org> | 2012-11-30 06:32:33 (GMT) |
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committer | Simon Glass <sjg@chromium.org> | 2012-11-30 21:44:04 (GMT) |
commit | 17c40ad96352114162e8a22b89a50b4742fd8f6a (patch) | |
tree | 6cc3c07989119c58e5de4fea874545d265f3932e /drivers/video/coreboot_fb.c | |
parent | 893db5956edb61002fc706a73bdaf177923aa05c (diff) | |
download | u-boot-17c40ad96352114162e8a22b89a50b4742fd8f6a.tar.xz |
x86: video: Add coreboot framebuffer support
Add a basic driver for the coreboot framebuffer.
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/video/coreboot_fb.c')
-rw-r--r-- | drivers/video/coreboot_fb.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/video/coreboot_fb.c b/drivers/video/coreboot_fb.c new file mode 100644 index 0000000..d93bd89 --- /dev/null +++ b/drivers/video/coreboot_fb.c @@ -0,0 +1,101 @@ +/* + * 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; +} |