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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define grub_video_render_target grub_video_fbrender_target
#include <grub/err.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/video.h>
#include <grub/video_fb.h>
#include <grub/coreboot/lbio.h>
#include <grub/machine/console.h>
struct grub_linuxbios_table_framebuffer *grub_video_coreboot_fbtable;
static struct
{
struct grub_video_mode_info mode_info;
grub_uint8_t *ptr;
} framebuffer;
static grub_err_t
grub_video_cbfb_init (void)
{
grub_memset (&framebuffer, 0, sizeof(framebuffer));
return grub_video_fb_init ();
}
static grub_err_t
grub_video_cbfb_fill_mode_info (struct grub_video_mode_info *out)
{
grub_memset (out, 0, sizeof (*out));
out->width = grub_video_coreboot_fbtable->width;
out->height = grub_video_coreboot_fbtable->height;
out->pitch = grub_video_coreboot_fbtable->pitch;
out->red_field_pos = grub_video_coreboot_fbtable->red_field_pos;
out->red_mask_size = grub_video_coreboot_fbtable->red_mask_size;
out->green_field_pos = grub_video_coreboot_fbtable->green_field_pos;
out->green_mask_size = grub_video_coreboot_fbtable->green_mask_size;
out->blue_field_pos = grub_video_coreboot_fbtable->blue_field_pos;
out->blue_mask_size = grub_video_coreboot_fbtable->blue_mask_size;
out->reserved_field_pos = grub_video_coreboot_fbtable->reserved_field_pos;
out->reserved_mask_size = grub_video_coreboot_fbtable->reserved_mask_size;
out->mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
out->bpp = grub_video_coreboot_fbtable->bpp;
out->bytes_per_pixel = (grub_video_coreboot_fbtable->bpp + 7) / 8;
out->number_of_colors = 256;
out->blit_format = grub_video_get_blit_format (out);
return GRUB_ERR_NONE;
}
static grub_err_t
grub_video_cbfb_setup (unsigned int width, unsigned int height,
unsigned int mode_type __attribute__ ((unused)),
unsigned int mode_mask __attribute__ ((unused)))
{
grub_err_t err;
if (!grub_video_coreboot_fbtable)
return grub_error (GRUB_ERR_IO, "Couldn't find display device.");
if (!((width == grub_video_coreboot_fbtable->width && height == grub_video_coreboot_fbtable->height)
|| (width == 0 && height == 0)))
return grub_error (GRUB_ERR_IO, "can't set mode %dx%d", width, height);
err = grub_video_cbfb_fill_mode_info (&framebuffer.mode_info);
if (err)
{
grub_dprintf ("video", "CBFB: couldn't fill mode info\n");
return err;
}
framebuffer.ptr = (void *) (grub_addr_t) grub_video_coreboot_fbtable->lfb;
grub_dprintf ("video", "CBFB: initialising FB @ %p %dx%dx%d\n",
framebuffer.ptr, framebuffer.mode_info.width,
framebuffer.mode_info.height, framebuffer.mode_info.bpp);
err = grub_video_fb_setup (mode_type, mode_mask,
&framebuffer.mode_info,
framebuffer.ptr, NULL, NULL);
if (err)
return err;
grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
grub_video_fbstd_colors);
return err;
}
static grub_err_t
grub_video_cbfb_get_info_and_fini (struct grub_video_mode_info *mode_info,
void **framebuf)
{
grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
*framebuf = (char *) framebuffer.ptr;
grub_video_fb_fini ();
return GRUB_ERR_NONE;
}
static struct grub_video_adapter grub_video_cbfb_adapter =
{
.name = "Coreboot video driver",
.prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE_DIRTY,
.id = GRUB_VIDEO_DRIVER_COREBOOT,
.init = grub_video_cbfb_init,
.fini = grub_video_fb_fini,
.setup = grub_video_cbfb_setup,
.get_info = grub_video_fb_get_info,
.get_info_and_fini = grub_video_cbfb_get_info_and_fini,
.set_palette = grub_video_fb_set_palette,
.get_palette = grub_video_fb_get_palette,
.set_viewport = grub_video_fb_set_viewport,
.get_viewport = grub_video_fb_get_viewport,
.set_region = grub_video_fb_set_region,
.get_region = grub_video_fb_get_region,
.set_area_status = grub_video_fb_set_area_status,
.get_area_status = grub_video_fb_get_area_status,
.map_color = grub_video_fb_map_color,
.map_rgb = grub_video_fb_map_rgb,
.map_rgba = grub_video_fb_map_rgba,
.unmap_color = grub_video_fb_unmap_color,
.fill_rect = grub_video_fb_fill_rect,
.blit_bitmap = grub_video_fb_blit_bitmap,
.blit_render_target = grub_video_fb_blit_render_target,
.scroll = grub_video_fb_scroll,
.swap_buffers = grub_video_fb_swap_buffers,
.create_render_target = grub_video_fb_create_render_target,
.delete_render_target = grub_video_fb_delete_render_target,
.set_active_render_target = grub_video_fb_set_active_render_target,
.get_active_render_target = grub_video_fb_get_active_render_target,
.next = 0
};
static int
iterate_linuxbios_table (grub_linuxbios_table_item_t table_item,
void *data __attribute__ ((unused)))
{
if (table_item->tag != GRUB_LINUXBIOS_MEMBER_FRAMEBUFFER)
return 0;
grub_video_coreboot_fbtable = (struct grub_linuxbios_table_framebuffer *) (table_item + 1);
return 1;
}
void
grub_video_coreboot_fb_early_init (void)
{
grub_linuxbios_table_iterate (iterate_linuxbios_table, 0);
}
void
grub_video_coreboot_fb_late_init (void)
{
if (grub_video_coreboot_fbtable)
grub_video_register (&grub_video_cbfb_adapter);
}
void
grub_video_coreboot_fb_fini (void)
{
if (grub_video_coreboot_fbtable)
grub_video_unregister (&grub_video_cbfb_adapter);
}
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