2N/A/*
2N/A * GRUB -- GRand Unified Bootloader
2N/A * Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc.
2N/A *
2N/A * GRUB is free software: you can redistribute it and/or modify
2N/A * it under the terms of the GNU General Public License as published by
2N/A * the Free Software Foundation, either version 3 of the License, or
2N/A * (at your option) any later version.
2N/A *
2N/A * GRUB is distributed in the hope that it will be useful,
2N/A * but WITHOUT ANY WARRANTY; without even the implied warranty of
2N/A * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2N/A * GNU General Public License for more details.
2N/A *
2N/A * You should have received a copy of the GNU General Public License
2N/A * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
2N/A */
2N/A
2N/A#define grub_video_render_target grub_video_fbrender_target
2N/A
2N/A#include <grub/err.h>
2N/A#include <grub/types.h>
2N/A#include <grub/dl.h>
2N/A#include <grub/misc.h>
2N/A#include <grub/mm.h>
2N/A#include <grub/video.h>
2N/A#include <grub/video_fb.h>
2N/A#include <grub/ieee1275/ieee1275.h>
2N/A
2N/AGRUB_MOD_LICENSE ("GPLv3+");
2N/A
2N/A/* Only 8-bit indexed color is supported for now. */
2N/A
2N/Astatic unsigned old_width, old_height;
2N/Astatic int restore_needed;
2N/Astatic char *display;
2N/Astatic grub_ieee1275_ihandle_t stdout_ihandle;
2N/Astatic int have_setcolors = 0;
2N/A
2N/Astatic struct
2N/A{
2N/A struct grub_video_mode_info mode_info;
2N/A grub_uint8_t *ptr;
2N/A} framebuffer;
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_set_palette (unsigned int start, unsigned int count,
2N/A struct grub_video_palette_data *palette_data);
2N/A
2N/Astatic void
2N/Aset_video_mode (unsigned width __attribute__ ((unused)),
2N/A unsigned height __attribute__ ((unused)))
2N/A{
2N/A /* TODO */
2N/A}
2N/A
2N/Astatic void
2N/Afind_display (void)
2N/A{
2N/A auto int hook (struct grub_ieee1275_devalias *alias);
2N/A int hook (struct grub_ieee1275_devalias *alias)
2N/A {
2N/A if (grub_strcmp (alias->type, "display") == 0)
2N/A {
2N/A grub_dprintf ("video", "Found display %s\n", alias->path);
2N/A display = grub_strdup (alias->path);
2N/A return 1;
2N/A }
2N/A return 0;
2N/A }
2N/A
2N/A grub_ieee1275_devices_iterate (hook);
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_init (void)
2N/A{
2N/A grub_ssize_t actual;
2N/A
2N/A grub_memset (&framebuffer, 0, sizeof(framebuffer));
2N/A
2N/A if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS)
2N/A && !grub_ieee1275_get_integer_property (grub_ieee1275_chosen,
2N/A "stdout", &stdout_ihandle,
2N/A sizeof (stdout_ihandle), &actual)
2N/A && actual == sizeof (stdout_ihandle))
2N/A have_setcolors = 1;
2N/A
2N/A return grub_video_fb_init ();
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_fini (void)
2N/A{
2N/A if (restore_needed)
2N/A {
2N/A set_video_mode (old_width, old_height);
2N/A restore_needed = 0;
2N/A }
2N/A return grub_video_fb_fini ();
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_fill_mode_info (grub_ieee1275_phandle_t dev,
2N/A struct grub_video_mode_info *out)
2N/A{
2N/A grub_uint32_t tmp;
2N/A
2N/A grub_memset (out, 0, sizeof (*out));
2N/A
2N/A if (grub_ieee1275_get_integer_property (dev, "width", &tmp,
2N/A sizeof (tmp), 0))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't retrieve display width.");
2N/A out->width = tmp;
2N/A
2N/A if (grub_ieee1275_get_integer_property (dev, "height", &tmp,
2N/A sizeof (tmp), 0))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't retrieve display height.");
2N/A out->height = tmp;
2N/A
2N/A if (grub_ieee1275_get_integer_property (dev, "linebytes", &tmp,
2N/A sizeof (tmp), 0))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't retrieve display pitch.");
2N/A out->pitch = tmp;
2N/A
2N/A out->mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
2N/A out->bpp = 8;
2N/A out->bytes_per_pixel = 1;
2N/A out->number_of_colors = 256;
2N/A
2N/A out->blit_format = grub_video_get_blit_format (out);
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_setup (unsigned int width, unsigned int height,
2N/A unsigned int mode_type __attribute__ ((unused)),
2N/A unsigned int mode_mask __attribute__ ((unused)))
2N/A{
2N/A grub_uint32_t current_width, current_height, address;
2N/A grub_err_t err;
2N/A grub_ieee1275_phandle_t dev;
2N/A
2N/A if (!display)
2N/A return grub_error (GRUB_ERR_IO, "Couldn't find display device.");
2N/A
2N/A if (grub_ieee1275_finddevice (display, &dev))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't open display device.");
2N/A
2N/A if (grub_ieee1275_get_integer_property (dev, "width", &current_width,
2N/A sizeof (current_width), 0))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't retrieve display width.");
2N/A
2N/A if (grub_ieee1275_get_integer_property (dev, "height", &current_height,
2N/A sizeof (current_width), 0))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't retrieve display height.");
2N/A
2N/A if ((width == current_width && height == current_height)
2N/A || (width == 0 && height == 0))
2N/A {
2N/A grub_dprintf ("video", "IEEE1275: keeping current mode %dx%d\n",
2N/A current_width, current_height);
2N/A }
2N/A else
2N/A {
2N/A grub_dprintf ("video", "IEEE1275: Setting mode %dx%d\n", width, height);
2N/A /* TODO. */
2N/A return grub_error (GRUB_ERR_IO, "can't set mode %dx%d", width, height);
2N/A }
2N/A
2N/A err = grub_video_ieee1275_fill_mode_info (dev, &framebuffer.mode_info);
2N/A if (err)
2N/A {
2N/A grub_dprintf ("video", "IEEE1275: couldn't fill mode info\n");
2N/A return err;
2N/A }
2N/A
2N/A if (grub_ieee1275_get_integer_property (dev, "address", (void *) &address,
2N/A sizeof (address), 0))
2N/A return grub_error (GRUB_ERR_IO, "Couldn't retrieve display address.");
2N/A
2N/A /* For some reason sparc64 uses 32-bit pointer too. */
2N/A framebuffer.ptr = (void *) (grub_addr_t) address;
2N/A
2N/A grub_dprintf ("video", "IEEE1275: initialising FB @ %p %dx%dx%d\n",
2N/A framebuffer.ptr, framebuffer.mode_info.width,
2N/A framebuffer.mode_info.height, framebuffer.mode_info.bpp);
2N/A
2N/A err = grub_video_fb_setup (mode_type, mode_mask,
2N/A &framebuffer.mode_info,
2N/A framebuffer.ptr, NULL, NULL);
2N/A if (err)
2N/A return err;
2N/A
2N/A grub_video_ieee1275_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
2N/A grub_video_fbstd_colors);
2N/A
2N/A return err;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_get_info_and_fini (struct grub_video_mode_info *mode_info,
2N/A void **framebuf)
2N/A{
2N/A grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
2N/A *framebuf = (char *) framebuffer.ptr;
2N/A
2N/A grub_video_fb_fini ();
2N/A
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_ieee1275_set_palette (unsigned int start, unsigned int count,
2N/A struct grub_video_palette_data *palette_data)
2N/A{
2N/A grub_err_t err;
2N/A struct grub_video_palette_data fb_palette_data[256];
2N/A
2N/A err = grub_video_fb_set_palette (start, count, palette_data);
2N/A if (err)
2N/A return err;
2N/A
2N/A grub_video_fb_get_palette (0, ARRAY_SIZE (fb_palette_data), fb_palette_data);
2N/A
2N/A /* Set colors. */
2N/A if (have_setcolors)
2N/A {
2N/A unsigned col;
2N/A for (col = 0; col < ARRAY_SIZE (fb_palette_data); col++)
2N/A grub_ieee1275_set_color (stdout_ihandle, col, fb_palette_data[col].r,
2N/A fb_palette_data[col].g,
2N/A fb_palette_data[col].b);
2N/A }
2N/A
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic struct grub_video_adapter grub_video_ieee1275_adapter =
2N/A {
2N/A .name = "IEEE1275 video driver",
2N/A
2N/A .prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE,
2N/A
2N/A .init = grub_video_ieee1275_init,
2N/A .fini = grub_video_ieee1275_fini,
2N/A .setup = grub_video_ieee1275_setup,
2N/A .get_info = grub_video_fb_get_info,
2N/A .get_info_and_fini = grub_video_ieee1275_get_info_and_fini,
2N/A .set_palette = grub_video_ieee1275_set_palette,
2N/A .get_palette = grub_video_fb_get_palette,
2N/A .set_viewport = grub_video_fb_set_viewport,
2N/A .get_viewport = grub_video_fb_get_viewport,
2N/A .map_color = grub_video_fb_map_color,
2N/A .map_rgb = grub_video_fb_map_rgb,
2N/A .map_rgba = grub_video_fb_map_rgba,
2N/A .unmap_color = grub_video_fb_unmap_color,
2N/A .fill_rect = grub_video_fb_fill_rect,
2N/A .blit_bitmap = grub_video_fb_blit_bitmap,
2N/A .blit_render_target = grub_video_fb_blit_render_target,
2N/A .scroll = grub_video_fb_scroll,
2N/A .swap_buffers = grub_video_fb_swap_buffers,
2N/A .create_render_target = grub_video_fb_create_render_target,
2N/A .delete_render_target = grub_video_fb_delete_render_target,
2N/A .set_active_render_target = grub_video_fb_set_active_render_target,
2N/A .get_active_render_target = grub_video_fb_get_active_render_target,
2N/A
2N/A .next = 0
2N/A };
2N/A
2N/AGRUB_MOD_INIT(ieee1275_fb)
2N/A{
2N/A find_display ();
2N/A if (display)
2N/A grub_video_register (&grub_video_ieee1275_adapter);
2N/A}
2N/A
2N/AGRUB_MOD_FINI(ieee1275_fb)
2N/A{
2N/A if (restore_needed)
2N/A {
2N/A set_video_mode (old_width, old_height);
2N/A restore_needed = 0;
2N/A }
2N/A if (display)
2N/A grub_video_unregister (&grub_video_ieee1275_adapter);
2N/A grub_free (display);
2N/A}