Author: ray
Date: Wed Mar 5 14:37:45 2014
New Revision: 262785
URL: http://svnweb.freebsd.org/changeset/base/262785
Log:
Add efifb driver. Driver uses the data passed by UEFI compatible loader/BIOS
and
enable to use framebuffer created by those loader.
Added:
head/sys/dev/vt/hw/efifb/
head/sys/dev/vt/hw/efifb/efifb.c (contents, props changed)
Added: head/sys/dev/vt/hw/efifb/efifb.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/vt/hw/efifb/efifb.c Wed Mar 5 14:37:45 2014
(r262785)
@@ -0,0 +1,143 @@
+/*-
+ * Copyright (c) 2014 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 <sys/linker.h>
+
+#include "opt_platform.h"
+
+#include <machine/efi.h>
+#include <machine/metadata.h>
+#include <machine/vm.h>
+#include <machine/vmparam.h>
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <machine/pmap.h>
+
+#include <dev/vt/vt.h>
+#include <dev/vt/hw/fb/vt_fb.h>
+#include <dev/vt/colors/vt_termcolors.h>
+
+static vd_init_t vt_efb_init;
+
+static struct vt_driver vt_efb_driver = {
+ .vd_init = vt_efb_init,
+ .vd_blank = vt_fb_blank,
+ .vd_bitbltchr = vt_fb_bitbltchr,
+ /* Better than VGA, but still generic driver. */
+ .vd_priority = VD_PRIORITY_GENERIC + 1,
+};
+
+static struct fb_info info;
+VT_CONSDEV_DECLARE(vt_efb_driver,
+ MAX(80, PIXEL_WIDTH(VT_FB_DEFAULT_WIDTH)),
+ MAX(25, PIXEL_HEIGHT(VT_FB_DEFAULT_HEIGHT)), &info);
+
+static int
+vt_efb_init(struct vt_device *vd)
+{
+ int depth, d, disable, i, len;
+ struct fb_info *info;
+ struct efi_fb *efifb;
+ caddr_t kmdp;
+
+ info = vd->vd_softc;
+
+ disable = 0;
+ TUNABLE_INT_FETCH("hw.syscons.disable", &disable);
+ if (disable != 0)
+ return (CN_DEAD);
+
+ kmdp = preload_search_by_type("elf kernel");
+ if (kmdp == NULL)
+ kmdp = preload_search_by_type("elf64 kernel");
+ efifb = (struct efi_fb *)preload_search_info(kmdp,
+ MODINFO_METADATA | MODINFOMD_EFI_FB);
+ if (!efifb->fb_present)
+ return (CN_DEAD);
+
+ info->fb_height = efifb->fb_height;
+ info->fb_width = efifb->fb_width;
+
+ depth = fls(efifb->fb_mask_red);
+ d = fls(efifb->fb_mask_green);
+ depth = d > depth ? d : depth;
+ d = fls(efifb->fb_mask_blue);
+ depth = d > depth ? d : depth;
+ d = fls(efifb->fb_mask_reserved);
+ depth = d > depth ? d : depth;
+ info->fb_depth = depth;
+
+ info->fb_stride = efifb->fb_stride * (depth / 8);
+
+ vt_generate_vga_palette(info->fb_cmap, COLOR_FORMAT_RGB,
+ efifb->fb_mask_red, ffs(efifb->fb_mask_red) - 1,
+ efifb->fb_mask_green, ffs(efifb->fb_mask_green) - 1,
+ efifb->fb_mask_blue, ffs(efifb->fb_mask_blue) - 1);
+
+ info->fb_size = info->fb_height * info->fb_stride;
+ info->fb_pbase = efifb->fb_addr;
+ /*
+ * We could use pmap_mapdev here except that the kernel pmap
+ * hasn't been created yet and hence any attempt to lock it will
+ * fail.
+ */
+ info->fb_vbase = PHYS_TO_DMAP(efifb->fb_addr);
+
+ /* blank full size */
+ len = info->fb_size / 4;
+ for (i = 0; i < len; i++) {
+ ((uint32_t *)info->fb_vbase)[i] = 0;
+ }
+
+ /* Get pixel storage size. */
+ info->fb_bpp = info->fb_stride / info->fb_width * 8;
+
+ /*
+ * Early FB driver work with static window buffer, so reduce to minimal
+ * size, buffer or screen.
+ */
+ info->fb_width = MIN(info->fb_width, VT_FB_DEFAULT_WIDTH);
+ info->fb_height = MIN(info->fb_height, VT_FB_DEFAULT_HEIGHT);
+
+ fb_probe(info);
+ vt_fb_init(vd);
+
+
+ return (CN_INTERNAL);
+}
+
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