Add a basic driver for the coreboot framebuffer. Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>master
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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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