From 01e825cc4b2e8a227c13f7dfcf3ccfcffc1121d5 Mon Sep 17 00:00:00 2001 From: phcoder Date: Sat, 24 Oct 2009 10:44:32 +0200 Subject: [PATCH] basic framebuffer support --- video/sm712.c | 197 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 197 insertions(+) create mode 100644 video/sm712.c diff --git a/video/sm712.c b/video/sm712.c new file mode 100644 index 000000000..5ebd865b7 --- /dev/null +++ b/video/sm712.c @@ -0,0 +1,197 @@ +/* + * 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 . + */ + +#define grub_video_render_target grub_video_fbrender_target + +#include +#include +#include +#include +#include +#include +#include +#include + +static struct +{ + struct grub_video_mode_info mode_info; + struct grub_video_render_target *render_target; + + unsigned int bytes_per_scan_line; + unsigned int bytes_per_pixel; + grub_uint8_t *ptr; + int index_color_mode; + int mapped; + grub_pci_device_t dev; +} framebuffer; + +static grub_err_t +grub_video_sm712_video_init (void) +{ + /* Reset frame buffer. */ + grub_memset (&framebuffer, 0, sizeof(framebuffer)); + + return grub_video_fb_init (); +} + +static grub_err_t +grub_video_sm712_video_fini (void) +{ + if (framebuffer.mapped) + grub_pci_device_unmap_range (framebuffer.dev, framebuffer.ptr, + 1024 * 600 * 2); + + return grub_video_fb_fini (); +} + +static grub_err_t +grub_video_sm712_setup (unsigned int width, unsigned int height, + unsigned int mode_type) +{ + int depth; + grub_err_t err; + + /* Decode depth from mode_type. If it is zero, then autodetect. */ + depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK) + >> GRUB_VIDEO_MODE_TYPE_DEPTH_POS; + + if ((1024 != width && width != 0) || (600 != height && height != 0) + || (16 != depth && depth != 0)) + return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, + "Only 1024x600x16 is supported"); + + /* Fill mode info details. */ + framebuffer.mode_info.width = 1024; + framebuffer.mode_info.height = 600; + framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_RGB; + framebuffer.mode_info.bpp = 16; + framebuffer.mode_info.bytes_per_pixel = 2; + framebuffer.mode_info.pitch = 1024 * 2; + framebuffer.mode_info.number_of_colors = 256; + framebuffer.mode_info.red_mask_size = 5; + framebuffer.mode_info.red_field_pos = 11; + framebuffer.mode_info.green_mask_size = 6; + framebuffer.mode_info.green_field_pos = 5; + framebuffer.mode_info.blue_mask_size = 5; + framebuffer.mode_info.blue_field_pos = 0; + framebuffer.mode_info.reserved_mask_size = 0; + framebuffer.mode_info.reserved_field_pos = 0; + framebuffer.mode_info.blit_format = grub_video_get_blit_format (&framebuffer.mode_info); + *(volatile grub_uint32_t *) 0xbfe00110 = 1; + framebuffer.ptr = (void *) 0xb0000000; + // framebuffer.ptr = grub_pci_device_map_range (framebuffer.dev, 1 << 26, + // 1024 * 600 * 2); + framebuffer.mapped = 1; + + err = grub_video_fb_create_render_target_from_pointer (&framebuffer.render_target, &framebuffer.mode_info, framebuffer.ptr); + + if (err) + return err; + + err = grub_video_fb_set_active_render_target (framebuffer.render_target); + + if (err) + return err; + + /* Copy default palette to initialize emulated palette. */ + err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS, + grub_video_fbstd_colors); + return err; +} + +static grub_err_t +grub_video_sm712_set_palette (unsigned int start, unsigned int count, + struct grub_video_palette_data *palette_data) +{ + if (framebuffer.index_color_mode) + { + /* TODO: Implement setting indexed color mode palette to hardware. */ + } + + /* Then set color to emulated palette. */ + return grub_video_fb_set_palette (start, count, palette_data); +} + +static grub_err_t +grub_video_sm712_swap_buffers (void) +{ + /* TODO: Implement buffer swapping. */ + return GRUB_ERR_NONE; +} + +static grub_err_t +grub_video_sm712_set_active_render_target (struct grub_video_render_target *target) +{ + if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY) + target = framebuffer.render_target; + + return grub_video_fb_set_active_render_target (target); +} + +static grub_err_t +grub_video_sm712_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_sm712_adapter = + { + .name = "SM712 Video Driver", + + .init = grub_video_sm712_video_init, + .fini = grub_video_sm712_video_fini, + .setup = grub_video_sm712_setup, + .get_info = grub_video_fb_get_info, + .get_info_and_fini = grub_video_sm712_get_info_and_fini, + .set_palette = grub_video_sm712_set_palette, + .get_palette = grub_video_fb_get_palette, + .set_viewport = grub_video_fb_set_viewport, + .get_viewport = grub_video_fb_get_viewport, + .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_sm712_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_sm712_set_active_render_target, + .get_active_render_target = grub_video_fb_get_active_render_target, + + .next = 0 + }; + +GRUB_MOD_INIT(video_sm712) +{ + grub_video_register (&grub_video_sm712_adapter); +} + +GRUB_MOD_FINI(video_sm712) +{ + grub_video_unregister (&grub_video_sm712_adapter); +}