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/*-
* Copyright (c) 2013 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Aleksandr Rybalko under sponsorship from the
* FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/fbio.h>
#include "opt_platform.h"
#include <dev/vt/vt.h>
#include <dev/vt/hw/fb/vt_fb.h>
#include <dev/vt/colors/vt_termcolors.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/pmap.h>
#include <machine/vmparam.h>
#include <machine/xbox.h>
#define VT_XBOX_WIDTH 640
#define VT_XBOX_HEIGHT 480
static vd_init_t xboxfb_init;
static struct vt_driver xboxfb_driver = {
.vd_init = xboxfb_init,
.vd_blank = vt_fb_blank,
.vd_bitbltchr = vt_fb_bitbltchr,
.vd_priority = VD_PRIORITY_GENERIC,
};
static struct fb_info xboxfb_info;
VT_CONSDEV_DECLARE(xboxfb_driver, PIXEL_WIDTH(VT_XBOX_WIDTH),
PIXEL_HEIGHT(VT_XBOX_HEIGHT), &xboxfb_info);
static int
xboxfb_init(struct vt_device *vd)
{
struct fb_info *info;
int i;
if (!arch_i386_is_xbox)
return (CN_DEAD);
info = &xboxfb_info;
/*
* We must make a mapping from video framebuffer memory
* to real. This is very crude: we map the entire
* videomemory to PAGE_SIZE! Since our kernel lives at
* it's relocated address range (0xc0xxxxxx), it won't
* care.
*
* We use address PAGE_SIZE and up so we can still trap
* NULL pointers. Once the real init is called, the
* mapping will be done via the OS and stored in a more
* sensible location ... but since we're not fully
* initialized, this is our only way to go :-(
*/
for (i = 0; i < (XBOX_FB_SIZE / PAGE_SIZE); i++) {
pmap_kenter(((i + 1) * PAGE_SIZE),
XBOX_FB_START + (i * PAGE_SIZE));
}
pmap_kenter((i + 1) * PAGE_SIZE,
XBOX_FB_START_PTR - XBOX_FB_START_PTR % PAGE_SIZE);
/* Ensure the framebuffer is where we want it to be. */
*(uint32_t *)((i + 1) * PAGE_SIZE + XBOX_FB_START_PTR % PAGE_SIZE) =
XBOX_FB_START;
/* Initialize fb_info. */
info = vd->vd_softc;
info->fb_width = VT_XBOX_WIDTH;
info->fb_height = VT_XBOX_HEIGHT;
info->fb_size = XBOX_FB_SIZE;
info->fb_stride = VT_XBOX_WIDTH * 4; /* 32bits per pixel. */
info->fb_vbase = PAGE_SIZE;
info->fb_pbase = XBOX_FB_START_PTR;
/* Get pixel storage size. */
info->fb_bpp = 32;
/* Get color depth. */
info->fb_depth = 24;
vt_generate_vga_palette(info->fb_cmap, COLOR_FORMAT_RGB, 255, 0, 255,
8, 255, 16);
fb_probe(info);
vt_fb_init(vd);
return (CN_INTERNAL);
}
static void
xbox_remap(void *unused)
{
struct fb_info *info;
if (!arch_i386_is_xbox)
return;
info = &xboxfb_info;
info->fb_vbase = (intptr_t)pmap_mapdev(info->fb_pbase, info->fb_size);
}
SYSINIT(xboxfb, SI_SUB_DRIVERS, SI_ORDER_ANY, xbox_remap, NULL);
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