e745cf0ca6
guidelines. * grub-core/kern/dl.c (grub_dl_check_license): New function. (grub_dl_load_core): Use grub_dl_check_license. * include/grub/dl.h (GRUB_MOD_SECTION): New macro. (GRUB_MOD_LICENSE): Likewise. (GRUB_MOD_DUAL_LICENSE): Likewise. All modules updated.
506 lines
15 KiB
C
506 lines
15 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define grub_video_render_target grub_video_fbrender_target
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#include <grub/err.h>
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#include <grub/types.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/video.h>
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#include <grub/video_fb.h>
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#include <grub/pci.h>
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#include <grub/vga.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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static struct
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{
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struct grub_video_mode_info mode_info;
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grub_size_t page_size; /* The size of a page in bytes. */
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grub_uint8_t *ptr;
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int mapped;
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grub_uint32_t base;
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grub_pci_device_t dev;
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} framebuffer;
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#define CIRRUS_APERTURE_SIZE 0x1000000
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#define CIRRUS_MAX_WIDTH 0x800
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#define CIRRUS_MAX_HEIGHT 0x800
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#define CIRRUS_MAX_PITCH (0x1ff * GRUB_VGA_CR_PITCH_DIVISOR)
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enum
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{
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CIRRUS_CR_EXTENDED_DISPLAY = 0x1b,
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CIRRUS_CR_EXTENDED_OVERLAY = 0x1d,
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CIRRUS_CR_MAX
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};
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#define CIRRUS_CR_EXTENDED_DISPLAY_PITCH_MASK 0x10
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#define CIRRUS_CR_EXTENDED_DISPLAY_PITCH_SHIFT 4
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#define CIRRUS_CR_EXTENDED_DISPLAY_START_MASK1 0x1
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#define CIRRUS_CR_EXTENDED_DISPLAY_START_SHIFT1 16
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#define CIRRUS_CR_EXTENDED_DISPLAY_START_MASK2 0xc
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#define CIRRUS_CR_EXTENDED_DISPLAY_START_SHIFT2 15
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#define CIRRUS_CR_EXTENDED_OVERLAY_DISPLAY_START_MASK 0x80
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#define CIRRUS_CR_EXTENDED_OVERLAY_DISPLAY_START_SHIFT 12
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enum
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{
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CIRRUS_SR_EXTENDED_MODE = 7,
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CIRRUS_SR_MAX
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};
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#define CIRRUS_SR_EXTENDED_MODE_LFB_ENABLE 0xf0
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#define CIRRUS_SR_EXTENDED_MODE_ENABLE_EXT 0x01
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#define CIRRUS_SR_EXTENDED_MODE_8BPP 0x00
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#define CIRRUS_SR_EXTENDED_MODE_16BPP 0x06
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#define CIRRUS_SR_EXTENDED_MODE_24BPP 0x04
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#define CIRRUS_SR_EXTENDED_MODE_32BPP 0x08
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#define CIRRUS_HIDDEN_DAC_ENABLE_EXT 0x80
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#define CIRRUS_HIDDEN_DAC_ENABLE_ALL 0x40
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#define CIRRUS_HIDDEN_DAC_8BPP 0
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#define CIRRUS_HIDDEN_DAC_15BPP (CIRRUS_HIDDEN_DAC_ENABLE_EXT \
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| CIRRUS_HIDDEN_DAC_ENABLE_ALL | 0)
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#define CIRRUS_HIDDEN_DAC_16BPP (CIRRUS_HIDDEN_DAC_ENABLE_EXT \
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| CIRRUS_HIDDEN_DAC_ENABLE_ALL | 1)
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#define CIRRUS_HIDDEN_DAC_888COLOR (CIRRUS_HIDDEN_DAC_ENABLE_EXT \
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| CIRRUS_HIDDEN_DAC_ENABLE_ALL | 5)
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static void
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write_hidden_dac (grub_uint8_t data)
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{
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grub_inb (GRUB_VGA_IO_PALLETTE_WRITE_INDEX);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_outb (data, GRUB_VGA_IO_PIXEL_MASK);
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}
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static grub_uint8_t
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read_hidden_dac (void)
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{
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grub_inb (GRUB_VGA_IO_PALLETTE_WRITE_INDEX);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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return grub_inb (GRUB_VGA_IO_PIXEL_MASK);
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}
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struct saved_state
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{
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grub_uint8_t cr[CIRRUS_CR_MAX];
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grub_uint8_t gr[GRUB_VGA_GR_MAX];
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grub_uint8_t sr[CIRRUS_SR_MAX];
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grub_uint8_t hidden_dac;
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/* We need to preserve VGA font and VGA text. */
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grub_uint8_t vram[32 * 4 * 256];
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grub_uint8_t r[256];
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grub_uint8_t g[256];
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grub_uint8_t b[256];
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};
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static struct saved_state initial_state;
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static int state_saved = 0;
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static void
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save_state (struct saved_state *st)
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{
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unsigned i;
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for (i = 0; i < ARRAY_SIZE (st->cr); i++)
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st->cr[i] = grub_vga_cr_read (i);
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for (i = 0; i < ARRAY_SIZE (st->sr); i++)
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st->sr[i] = grub_vga_sr_read (i);
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for (i = 0; i < ARRAY_SIZE (st->gr); i++)
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st->gr[i] = grub_vga_gr_read (i);
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for (i = 0; i < 256; i++)
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grub_vga_palette_read (i, st->r + i, st->g + i, st->b + i);
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st->hidden_dac = read_hidden_dac ();
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grub_vga_sr_write (GRUB_VGA_SR_MEMORY_MODE_CHAIN4, GRUB_VGA_SR_MEMORY_MODE);
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grub_memcpy (st->vram, framebuffer.ptr, sizeof (st->vram));
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}
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static void
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restore_state (struct saved_state *st)
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{
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unsigned i;
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grub_vga_sr_write (GRUB_VGA_SR_MEMORY_MODE_CHAIN4, GRUB_VGA_SR_MEMORY_MODE);
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grub_memcpy (framebuffer.ptr, st->vram, sizeof (st->vram));
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for (i = 0; i < ARRAY_SIZE (st->cr); i++)
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grub_vga_cr_write (st->cr[i], i);
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for (i = 0; i < ARRAY_SIZE (st->sr); i++)
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grub_vga_sr_write (st->sr[i], i);
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for (i = 0; i < ARRAY_SIZE (st->gr); i++)
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grub_vga_gr_write (st->gr[i], i);
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for (i = 0; i < 256; i++)
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grub_vga_palette_write (i, st->r[i], st->g[i], st->b[i]);
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write_hidden_dac (st->hidden_dac);
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}
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static grub_err_t
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grub_video_cirrus_video_init (void)
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{
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/* Reset frame buffer. */
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grub_memset (&framebuffer, 0, sizeof(framebuffer));
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return grub_video_fb_init ();
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}
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static grub_err_t
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grub_video_cirrus_video_fini (void)
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{
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if (framebuffer.mapped)
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grub_pci_device_unmap_range (framebuffer.dev, framebuffer.ptr,
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CIRRUS_APERTURE_SIZE);
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if (state_saved)
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{
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restore_state (&initial_state);
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state_saved = 0;
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}
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return grub_video_fb_fini ();
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}
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static grub_err_t
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doublebuf_pageflipping_set_page (int page)
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{
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int start = framebuffer.page_size * page / 4;
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grub_uint8_t cr_ext, cr_overlay;
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grub_vga_cr_write (start & 0xff, GRUB_VGA_CR_START_ADDR_LOW_REGISTER);
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grub_vga_cr_write ((start & 0xff00) >> 8,
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GRUB_VGA_CR_START_ADDR_HIGH_REGISTER);
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cr_ext = grub_vga_cr_read (CIRRUS_CR_EXTENDED_DISPLAY);
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cr_ext &= ~(CIRRUS_CR_EXTENDED_DISPLAY_START_MASK1
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| CIRRUS_CR_EXTENDED_DISPLAY_START_MASK2);
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cr_ext |= ((start >> CIRRUS_CR_EXTENDED_DISPLAY_START_SHIFT1)
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& CIRRUS_CR_EXTENDED_DISPLAY_START_MASK1);
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cr_ext |= ((start >> CIRRUS_CR_EXTENDED_DISPLAY_START_SHIFT2)
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& CIRRUS_CR_EXTENDED_DISPLAY_START_MASK2);
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grub_vga_cr_write (cr_ext, CIRRUS_CR_EXTENDED_DISPLAY);
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cr_overlay = grub_vga_cr_read (CIRRUS_CR_EXTENDED_OVERLAY);
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cr_overlay &= ~(CIRRUS_CR_EXTENDED_OVERLAY_DISPLAY_START_MASK);
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cr_overlay |= ((start >> CIRRUS_CR_EXTENDED_OVERLAY_DISPLAY_START_SHIFT)
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& CIRRUS_CR_EXTENDED_OVERLAY_DISPLAY_START_MASK);
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grub_vga_cr_write (cr_overlay, CIRRUS_CR_EXTENDED_OVERLAY);
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_video_cirrus_set_palette (unsigned int start, unsigned int count,
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struct grub_video_palette_data *palette_data)
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{
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if (framebuffer.mode_info.mode_type == GRUB_VIDEO_MODE_TYPE_INDEX_COLOR)
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{
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unsigned i;
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if (start >= 0x100)
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return GRUB_ERR_NONE;
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if (start + count >= 0x100)
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count = 0x100 - start;
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for (i = 0; i < count; i++)
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grub_vga_palette_write (start + i, palette_data[i].r, palette_data[i].g,
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palette_data[i].b);
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}
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/* Then set color to emulated palette. */
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return grub_video_fb_set_palette (start, count, palette_data);
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}
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static grub_err_t
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grub_video_cirrus_setup (unsigned int width, unsigned int height,
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grub_video_mode_type_t mode_type,
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grub_video_mode_type_t mode_mask)
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{
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int depth;
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grub_err_t err;
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int found = 0;
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int pitch, bytes_per_pixel;
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auto int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)));
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int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid)
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{
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grub_pci_address_t addr;
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grub_uint32_t class;
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
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class = grub_pci_read (addr);
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if (((class >> 16) & 0xffff) != 0x0300 || pciid != 0x00b81013)
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return 0;
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found = 1;
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
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framebuffer.base = grub_pci_read (addr) & GRUB_PCI_ADDR_MEM_MASK;
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framebuffer.dev = dev;
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return 1;
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}
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/* Decode depth from mode_type. If it is zero, then autodetect. */
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depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
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>> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
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if (width == 0 || height == 0)
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{
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width = 800;
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height = 600;
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}
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if (width & (GRUB_VGA_CR_WIDTH_DIVISOR - 1))
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return grub_error (GRUB_ERR_IO,
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"screen width must be a multiple of %d",
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GRUB_VGA_CR_WIDTH_DIVISOR);
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if (width > CIRRUS_MAX_WIDTH)
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return grub_error (GRUB_ERR_IO,
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"screen width must be at most %d", CIRRUS_MAX_WIDTH);
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if (height > CIRRUS_MAX_HEIGHT)
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return grub_error (GRUB_ERR_IO,
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"screen height must be at most %d", CIRRUS_MAX_HEIGHT);
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if (depth == 0
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&& !grub_video_check_mode_flag (mode_type, mode_mask,
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GRUB_VIDEO_MODE_TYPE_INDEX_COLOR, 0))
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depth = 24;
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if (depth == 0)
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depth = 8;
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if (depth != 32 && depth != 24 && depth != 16 && depth != 15 && depth != 8)
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return grub_error (GRUB_ERR_IO, "only 32, 24, 16, 15 and 8-bit bpp are"
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" supported by cirrus video");
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bytes_per_pixel = (depth + 7) / 8;
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pitch = width * bytes_per_pixel;
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if (pitch > CIRRUS_MAX_PITCH)
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return grub_error (GRUB_ERR_IO,
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"screen width must be at most %d at bitdepth %d",
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CIRRUS_MAX_PITCH / bytes_per_pixel, depth);
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framebuffer.page_size = pitch * height;
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if (framebuffer.page_size > CIRRUS_APERTURE_SIZE)
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return grub_error (GRUB_ERR_IO, "Not enough video memory for this mode");
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grub_pci_iterate (find_card);
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if (!found)
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return grub_error (GRUB_ERR_IO, "Couldn't find graphics card");
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if (found && framebuffer.base == 0)
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{
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/* FIXME: change framebuffer base */
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return grub_error (GRUB_ERR_IO, "PCI BAR not set");
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}
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/* We can safely discard volatile attribute. */
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framebuffer.ptr = (void *) grub_pci_device_map_range (framebuffer.dev,
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framebuffer.base,
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CIRRUS_APERTURE_SIZE);
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framebuffer.mapped = 1;
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if (!state_saved)
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{
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save_state (&initial_state);
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state_saved = 1;
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}
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{
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struct grub_video_hw_config config = {
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.pitch = pitch / GRUB_VGA_CR_PITCH_DIVISOR,
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.line_compare = 0x3ff,
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.vdisplay_end = height - 1,
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.horizontal_end = width / GRUB_VGA_CR_WIDTH_DIVISOR
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};
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grub_uint8_t sr_ext = 0, hidden_dac = 0;
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grub_vga_set_geometry (&config, grub_vga_cr_write);
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grub_vga_gr_write (GRUB_VGA_GR_MODE_256_COLOR | GRUB_VGA_GR_MODE_READ_MODE1,
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GRUB_VGA_GR_MODE);
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grub_vga_gr_write (GRUB_VGA_GR_GR6_GRAPHICS_MODE, GRUB_VGA_GR_GR6);
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grub_vga_sr_write (GRUB_VGA_SR_MEMORY_MODE_NORMAL, GRUB_VGA_SR_MEMORY_MODE);
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grub_vga_cr_write ((config.pitch >> CIRRUS_CR_EXTENDED_DISPLAY_PITCH_SHIFT)
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& CIRRUS_CR_EXTENDED_DISPLAY_PITCH_MASK,
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CIRRUS_CR_EXTENDED_DISPLAY);
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grub_vga_cr_write (GRUB_VGA_CR_MODE_TIMING_ENABLE
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| GRUB_VGA_CR_MODE_BYTE_MODE
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| GRUB_VGA_CR_MODE_NO_HERCULES | GRUB_VGA_CR_MODE_NO_CGA,
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GRUB_VGA_CR_MODE);
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doublebuf_pageflipping_set_page (0);
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sr_ext = CIRRUS_SR_EXTENDED_MODE_LFB_ENABLE
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| CIRRUS_SR_EXTENDED_MODE_ENABLE_EXT;
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switch (depth)
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{
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/* FIXME: support 8-bit grayscale and 8-bit RGB. */
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case 32:
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hidden_dac = CIRRUS_HIDDEN_DAC_888COLOR;
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sr_ext |= CIRRUS_SR_EXTENDED_MODE_32BPP;
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break;
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case 24:
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hidden_dac = CIRRUS_HIDDEN_DAC_888COLOR;
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sr_ext |= CIRRUS_SR_EXTENDED_MODE_24BPP;
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break;
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case 16:
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hidden_dac = CIRRUS_HIDDEN_DAC_16BPP;
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sr_ext |= CIRRUS_SR_EXTENDED_MODE_16BPP;
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break;
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case 15:
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hidden_dac = CIRRUS_HIDDEN_DAC_15BPP;
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sr_ext |= CIRRUS_SR_EXTENDED_MODE_16BPP;
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break;
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case 8:
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hidden_dac = CIRRUS_HIDDEN_DAC_8BPP;
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sr_ext |= CIRRUS_SR_EXTENDED_MODE_8BPP;
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break;
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}
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grub_vga_sr_write (sr_ext, CIRRUS_SR_EXTENDED_MODE);
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write_hidden_dac (hidden_dac);
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}
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/* Fill mode info details. */
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framebuffer.mode_info.width = width;
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framebuffer.mode_info.height = height;
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framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
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framebuffer.mode_info.bpp = depth;
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framebuffer.mode_info.bytes_per_pixel = bytes_per_pixel;
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framebuffer.mode_info.pitch = pitch;
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framebuffer.mode_info.number_of_colors = 256;
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framebuffer.mode_info.reserved_mask_size = 0;
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framebuffer.mode_info.reserved_field_pos = 0;
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switch (depth)
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{
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case 8:
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framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
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break;
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case 16:
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framebuffer.mode_info.red_mask_size = 5;
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framebuffer.mode_info.red_field_pos = 11;
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framebuffer.mode_info.green_mask_size = 6;
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framebuffer.mode_info.green_field_pos = 5;
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framebuffer.mode_info.blue_mask_size = 5;
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framebuffer.mode_info.blue_field_pos = 0;
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break;
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case 15:
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framebuffer.mode_info.red_mask_size = 5;
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framebuffer.mode_info.red_field_pos = 10;
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framebuffer.mode_info.green_mask_size = 5;
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framebuffer.mode_info.green_field_pos = 5;
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framebuffer.mode_info.blue_mask_size = 5;
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framebuffer.mode_info.blue_field_pos = 0;
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break;
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case 32:
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framebuffer.mode_info.reserved_mask_size = 8;
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framebuffer.mode_info.reserved_field_pos = 24;
|
|
|
|
case 24:
|
|
framebuffer.mode_info.red_mask_size = 8;
|
|
framebuffer.mode_info.red_field_pos = 16;
|
|
framebuffer.mode_info.green_mask_size = 8;
|
|
framebuffer.mode_info.green_field_pos = 8;
|
|
framebuffer.mode_info.blue_mask_size = 8;
|
|
framebuffer.mode_info.blue_field_pos = 0;
|
|
break;
|
|
}
|
|
|
|
framebuffer.mode_info.blit_format = grub_video_get_blit_format (&framebuffer.mode_info);
|
|
|
|
if (CIRRUS_APERTURE_SIZE >= 2 * framebuffer.page_size)
|
|
err = grub_video_fb_setup (mode_type, mode_mask,
|
|
&framebuffer.mode_info,
|
|
framebuffer.ptr,
|
|
doublebuf_pageflipping_set_page,
|
|
framebuffer.ptr + framebuffer.page_size);
|
|
else
|
|
err = grub_video_fb_setup (mode_type, mode_mask,
|
|
&framebuffer.mode_info,
|
|
framebuffer.ptr, 0, 0);
|
|
|
|
|
|
/* Copy default palette to initialize emulated palette. */
|
|
err = grub_video_cirrus_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
|
|
grub_video_fbstd_colors);
|
|
return err;
|
|
}
|
|
|
|
static struct grub_video_adapter grub_video_cirrus_adapter =
|
|
{
|
|
.name = "Cirrus CLGD 5446 PCI Video Driver",
|
|
.id = GRUB_VIDEO_DRIVER_CIRRUS,
|
|
|
|
.prio = GRUB_VIDEO_ADAPTER_PRIO_NATIVE,
|
|
|
|
.init = grub_video_cirrus_video_init,
|
|
.fini = grub_video_cirrus_video_fini,
|
|
.setup = grub_video_cirrus_setup,
|
|
.get_info = grub_video_fb_get_info,
|
|
.get_info_and_fini = grub_video_fb_get_info_and_fini,
|
|
.set_palette = grub_video_cirrus_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_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
|
|
};
|
|
|
|
GRUB_MOD_INIT(video_cirrus)
|
|
{
|
|
grub_video_register (&grub_video_cirrus_adapter);
|
|
}
|
|
|
|
GRUB_MOD_FINI(video_cirrus)
|
|
{
|
|
grub_video_unregister (&grub_video_cirrus_adapter);
|
|
}
|