mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
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/*
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* coreboot Framebuffer driver.
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*
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* Copyright (C) 2011 The Chromium OS authors
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/tables.h>
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#include <asm/arch/sysinfo.h>
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#include <video_fb.h>
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#include "videomodes.h"
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/*
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* The Graphic Device
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*/
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GraphicDevice ctfb;
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static int parse_coreboot_table_fb(GraphicDevice *gdev)
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{
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struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
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/* If there is no framebuffer structure, bail out and keep
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* running on the serial console.
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*/
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if (!fb)
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return 0;
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gdev->winSizeX = fb->x_resolution;
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gdev->winSizeY = fb->y_resolution;
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gdev->plnSizeX = fb->x_resolution;
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gdev->plnSizeY = fb->y_resolution;
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gdev->gdfBytesPP = fb->bits_per_pixel / 8;
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switch (fb->bits_per_pixel) {
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case 24:
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gdev->gdfIndex = GDF_32BIT_X888RGB;
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break;
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case 16:
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gdev->gdfIndex = GDF_16BIT_565RGB;
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break;
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default:
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gdev->gdfIndex = GDF__8BIT_INDEX;
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break;
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}
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gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
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gdev->pciBase = (unsigned int)fb->physical_address;
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gdev->frameAdrs = (unsigned int)fb->physical_address;
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gdev->memSize = fb->bytes_per_line * fb->y_resolution;
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gdev->vprBase = (unsigned int)fb->physical_address;
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gdev->cprBase = (unsigned int)fb->physical_address;
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return 1;
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}
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void *video_hw_init(void)
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{
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GraphicDevice *gdev = &ctfb;
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int bits_per_pixel;
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printf("Video: ");
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if (!parse_coreboot_table_fb(gdev)) {
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printf("No video mode configured in coreboot!\n");
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return NULL;
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}
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bits_per_pixel = gdev->gdfBytesPP * 8;
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/* fill in Graphic device struct */
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sprintf(gdev->modeIdent, "%dx%dx%d", gdev->winSizeX, gdev->winSizeY,
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bits_per_pixel);
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printf("%s\n", gdev->modeIdent);
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memset((void *)gdev->pciBase, 0,
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gdev->winSizeX * gdev->winSizeY * gdev->gdfBytesPP);
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return (void *)gdev;
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}
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