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Add support for passing EFI framebuffer into FreeBSD 10.1 and later

PATCH In review Kris Moore 2 participants 6 messages Oct 28, 2014 – Jan 22, 2015

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Kris Moore

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#0 lore raw

PATCH 1/1 Add support for passing EFI framebuffer into FreeBSD 10.1 and later

Got another patch for review today.

This patch adds support for FreeBSD's new VT console driver when booting in EFI mode on FreeBSD 10.1 and later.

Please let me know any comments, or things that need addressed to get this merged in.

Thanks!

Signature · 3 lines
Kris Moore
PC-BSD Software
iXsystems

From a9c20c1640cdea0ba902095cb18760f5ebe98875 Mon Sep 17 00:00:00 2001
From: Kris Moore <[email protected]>
Date: Tue, 28 Oct 2014 15:59:59 -0400
Subject: [PATCH 1/2] Add support for passing EFI framebuffer information to
FreeBSD kernel on FreeBSD 10.1 and later.

---
 grub-core/loader/i386/bsd.c          | 75 ++++++++++++++++++++++++++++++++++++
 grub-core/video/efi_gop.c            | 14 +++++++
 include/grub/i386/bsd.h              |  1 +
 include/grub/i386/freebsd_bootinfo.h | 33 ++++++++++++++++
 include/grub/video.h                 | 18 +++++++++
 5 files changed, 141 insertions(+)
 create mode 100644 include/grub/i386/freebsd_bootinfo.h
loader/i386/bsd.c +75 -0
index 8f691e0..c685552 100644
@@ -48,6 +48,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
 #ifdef GRUB_MACHINE_EFI
 #include <grub/efi/efi.h>
 #define NETBSD_DEFAULT_VIDEO_MODE "800x600"
+#define FREEBSD_DEFAULT_VIDEO_MODE "800x600"
 #else
 #define NETBSD_DEFAULT_VIDEO_MODE "text"
 #include <grub/i386/pc/vbe.h>
@@ -584,6 +585,63 @@ freebsd_get_zfs (void)
   grub_free (uuid);
 }
 
+#ifdef GRUB_MACHINE_EFI
+
+static grub_err_t
+grub_freebsd_setup_video (void)
+{
+  struct grub_video_mode_info mode_info;
+  void *framebuffer;
+  const char *modevar;
+  struct grub_freebsd_btinfo_framebuf efifb;
+  grub_err_t err;
+  grub_video_driver_id_t driv_id;
+
+  modevar = grub_env_get ("gfxpayload");
+
+  /* Now all graphical modes are acceptable.
+     May change in future if we have modes without framebuffer.  */
+  if (modevar && *modevar != 0)
+    {
+      char *tmp;
+      tmp = grub_xasprintf ("%s;" FREEBSD_DEFAULT_VIDEO_MODE, modevar);
+      if (! tmp)
+	return grub_errno;
+      err = grub_video_set_mode (tmp, 0, 0);
+      grub_free (tmp);
+    }
+  else
+    err = grub_video_set_mode (FREEBSD_DEFAULT_VIDEO_MODE, 0, 0);
+
+  if (err)
+    return err;
+
+  driv_id = grub_video_get_driver_id ();
+  if (driv_id == GRUB_VIDEO_DRIVER_NONE)
+    return GRUB_ERR_NONE;
+
+  err = grub_video_get_info_and_fini (&mode_info, &framebuffer);
+
+  if (err)
+    return err;
+
+  efifb.fb_width = mode_info.width;
+  efifb.fb_height = mode_info.height;
+  efifb.fb_stride = mode_info.stride;
+
+  efifb.fb_addr = (grub_addr_t) framebuffer;
+  efifb.fb_size = ALIGN_UP (mode_info.pitch * efifb.fb_height, 65536);
+
+  efifb.fb_mask_red = mode_info.red_mask;
+  efifb.fb_mask_green = mode_info.green_mask;
+  efifb.fb_mask_blue = mode_info.blue_mask;
+  efifb.fb_mask_reserved = mode_info.reserved_mask;
+
+  err = grub_bsd_add_meta ( FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF, &efifb, sizeof (efifb));
+  return err;
+}
+#endif
+
 static grub_err_t
 grub_freebsd_boot (void)
 {
@@ -687,6 +745,10 @@ grub_freebsd_boot (void)
 		*(grub_uint32_t *) p_tag = bootflags;
 	      break;
 
+	    case FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF:
+	      grub_memcpy (p_tag, tag->data, tag->len);
+	      break;
+
 	    case FREEBSD_MODINFO_METADATA | FREEBSD_MODINFOMD_ENVP:
 	      if (is_64bit)
 		*(grub_uint64_t *) p_tag = bi.environment;
@@ -716,7 +778,10 @@ grub_freebsd_boot (void)
 
   bi.kern_end = kern_end;
 
+#ifndef GRUB_MACHINE_EFI
+  /* Don't set text mode on EFI boot */
   grub_video_set_mode ("text", 0, 0);
+#endif
 
   if (is_64bit)
     {
@@ -1560,6 +1625,16 @@ grub_cmd_freebsd (grub_extcmd_context_t ctxt, int argc, char *argv[])
 				   FREEBSD_MODINFOMD_KERNEND, &data, len);
 	  if (err)
 	    return err;
+
+#ifdef GRUB_MACHINE_EFI
+	  err = grub_freebsd_setup_video ();
+	  if (err)
+	  {
+	    grub_print_error ();
+	    grub_puts_ (N_("Booting in EFI blind mode"));
+	    grub_errno = GRUB_ERR_NONE;
+	  }
+#endif
 	}
       grub_bsd_get_device (&freebsd_biosdev, &unit, &slice, &part);
       freebsd_zfsguid = 0;
video/efi_gop.c +14 -0
index 7f9d1c2..cfe0119 100644
@@ -180,6 +180,8 @@ grub_video_gop_fill_real_mode_info (unsigned mode,
   out->mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
   out->bpp = grub_video_gop_get_bpp (in);
   out->bytes_per_pixel = out->bpp >> 3;
+  out->stride = in->pixels_per_scanline;
+  out->pixel_format = in->pixel_format;
   if (!out->bpp)
     return grub_error (GRUB_ERR_IO, "unsupported video mode");
   out->pitch = in->pixels_per_scanline * out->bytes_per_pixel;
@@ -195,6 +197,10 @@ grub_video_gop_fill_real_mode_info (unsigned mode,
       out->blue_field_pos = 16;
       out->reserved_mask_size = 8;
       out->reserved_field_pos = 24;
+      out->red_mask = 0x000000ff;
+      out->green_mask = 0x0000ff00;
+      out->blue_mask = 0x00ff0000;
+      out->reserved_mask = 0xff000000;
       break;
 
     case GRUB_EFI_GOT_BGRA8:
@@ -206,6 +212,10 @@ grub_video_gop_fill_real_mode_info (unsigned mode,
       out->blue_field_pos = 0;
       out->reserved_mask_size = 8;
       out->reserved_field_pos = 24;
+      out->red_mask = 0x00ff0000;
+      out->green_mask = 0x0000ff00;
+      out->blue_mask = 0x000000ff;
+      out->reserved_mask = 0xff000000;
       break;
 
     case GRUB_EFI_GOT_BITMASK:
@@ -217,6 +227,10 @@ grub_video_gop_fill_real_mode_info (unsigned mode,
 				  &out->blue_field_pos);
       grub_video_gop_get_bitmask (in->pixel_bitmask.a, &out->reserved_mask_size,
 				  &out->reserved_field_pos);
+      out->red_mask = in->pixel_bitmask.r;
+      out->green_mask = in->pixel_bitmask.g;
+      out->blue_mask = in->pixel_bitmask.b;
+      out->reserved_mask = in->pixel_bitmask.a;
       break;
 
     default:
grub/i386/bsd.h +1 -0
index 524d47a..b7bb545 100644
@@ -26,6 +26,7 @@
 #include <grub/i386/netbsd_reboot.h>
 #include <grub/i386/openbsd_reboot.h>
 #include <grub/i386/freebsd_linker.h>
+#include <grub/i386/freebsd_bootinfo.h>
 #include <grub/i386/netbsd_bootinfo.h>
 #include <grub/i386/openbsd_bootarg.h>
 
grub/i386/freebsd_bootinfo.h new file +33 -0
new file mode 100644
index 0000000..17e5997
@@ -0,0 +1,33 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+
+#define FREEBSD_BTINFO_FRAMEBUF  0x1005
+
+struct grub_freebsd_btinfo_framebuf {
+  grub_uint64_t        fb_addr;
+  grub_uint64_t        fb_size;
+  grub_int32_t         fb_height;
+  grub_int32_t         fb_width;
+  grub_int32_t         fb_stride;
+  grub_uint32_t        fb_mask_red;
+  grub_uint32_t        fb_mask_green;
+  grub_uint32_t        fb_mask_blue;
+  grub_uint32_t        fb_mask_reserved;
+};
grub/video.h +18 -0
index 52c3fd7..e980fb1 100644
@@ -141,6 +141,12 @@ struct grub_video_mode_info
   /* Pitch of one scanline.  How many bytes there are for scanline.  */
   unsigned int pitch;
 
+  /* Pixels per scanline */
+  unsigned int stride;
+
+  /* Native pixel format */
+  unsigned int pixel_format;
+
   /* In index color mode, number of colors.  In RGB mode this is 256.  */
   unsigned int number_of_colors;
 
@@ -156,21 +162,33 @@ struct grub_video_mode_info
   /* What is location of red color bits.  In Index Color mode, this is 0.  */
   unsigned int red_field_pos;
 
+  /* Native red mask */
+  unsigned int red_mask;
+
   /* How many bits are reserved for green color.  */
   unsigned int green_mask_size;
 
   /* What is location of green color bits.  In Index Color mode, this is 0.  */
   unsigned int green_field_pos;
 
+  /* Native green mask */
+  unsigned int green_mask;
+
   /* How many bits are reserved for blue color.  */
   unsigned int blue_mask_size;
 
   /* What is location of blue color bits.  In Index Color mode, this is 0.  */
   unsigned int blue_field_pos;
 
+  /* Native blue mask */
+  unsigned int blue_mask;
+
   /* How many bits are reserved in color.  */
   unsigned int reserved_mask_size;
 
+  /* Native reserved mask */
+  unsigned int reserved_mask;
+
   /* What is location of reserved color bits.  In Index Color mode,
      this is 0.  */
   unsigned int reserved_field_pos;
Signature · 12 lines
2.1.2


From 68a48b4a3597b67110ad3c7fcc05f6f0e1e40b05 Mon Sep 17 00:00:00 2001
From: Kris Moore <[email protected]>
Date: Tue, 28 Oct 2014 16:21:51 -0400
Subject: [PATCH 2/2] Update changelog with details about the FreeBSD EFI
 framebuffer passthrough

---
 ChangeLog | 9 +++++++++
 1 file changed, 9 insertions(+)
ChangeLog +9 -0
index 190d19d..0988971 100644
@@ -1,3 +1,12 @@
+2014-10-28  Kris Moore  <[email protected]>
+	* grub-core/loader/i386/bsd.c: Add default FreeBSD EFI video mode, and
+	structure to pass information into EFI booted kernel
+	* grub-core/video/efi_gop.c: Expose some additional GOP mode information
+	* include/grub/i386/bsd.h: Include new freebsd_bootinfo.h
+	* include/grub/i386/freebsd_bootinfo.h: Add grub_freebsd_btinfo_framebuf
+	structure for FreeBSD EFI framebuffer passthrough
+	* include/grub/video.h: Add the additional exposed GOP values
+
 2014-10-14  Andrei Borzenkov  <[email protected]>
 
 	* grub-core/loader/arm/linux.c: Use full initializer for initrd_ctx to
Signature · 1 line
2.1.2
author
#1 lore raw
Quoted 8 lines · Kris Moore

Got another patch for review today.

This patch adds support for FreeBSD's new VT console driver when booting in EFI mode on FreeBSD 10.1 and later.

Please let me know any comments, or things that need addressed to get this merged in.

Quoted 8 lines

Thanks!

_______________________________________________
Grub-devel mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/grub-devel

An updated version of this patch is now in the FreeBSD ports tree:

https://svnweb.freebsd.org/ports/head/sysutils/grub2-efi/files/patch-grub-efi-framebuffer?revision=371769&view=co

This updated version adds some ACPI detection / hints that the FreeBSD kernel requires to UEFI boot on most systems.

Thanks!

Signature · 3 lines
Kris Moore
PC-BSD Software
iXsystems
#3 lore raw
In reply to Kris Moore
Quoted 151 lines · Kris Moore

Got another patch for review today.

This patch adds support for FreeBSD's new VT console driver when booting in EFI mode on FreeBSD 10.1 and later.

Please let me know any comments, or things that need addressed to get this merged in.

Thanks!

-- Kris Moore PC-BSD Software iXsystems

patch-grub-fb

From a9c20c1640cdea0ba902095cb18760f5ebe98875 Mon Sep 17 00:00:00 2001
From: Kris Moore <[email protected]>
Date: Tue, 28 Oct 2014 15:59:59 -0400
Subject: [PATCH 1/2] Add support for passing EFI framebuffer information to
FreeBSD kernel on FreeBSD 10.1 and later.

---
 grub-core/loader/i386/bsd.c          | 75 ++++++++++++++++++++++++++++++++++++
 grub-core/video/efi_gop.c            | 14 +++++++
 include/grub/i386/bsd.h              |  1 +
 include/grub/i386/freebsd_bootinfo.h | 33 ++++++++++++++++
 include/grub/video.h                 | 18 +++++++++
 5 files changed, 141 insertions(+)
 create mode 100644 include/grub/i386/freebsd_bootinfo.h
loader/i386/bsd.c +75 -0
index 8f691e0..c685552 100644
@@ -48,6 +48,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
 #ifdef GRUB_MACHINE_EFI
 #include <grub/efi/efi.h>
 #define NETBSD_DEFAULT_VIDEO_MODE "800x600"
+#define FREEBSD_DEFAULT_VIDEO_MODE "800x600"
 #else
 #define NETBSD_DEFAULT_VIDEO_MODE "text"
 #include <grub/i386/pc/vbe.h>
@@ -584,6 +585,63 @@ freebsd_get_zfs (void)
   grub_free (uuid);
 }
 
+#ifdef GRUB_MACHINE_EFI
+
+static grub_err_t
+grub_freebsd_setup_video (void)
+{
+  struct grub_video_mode_info mode_info;
+  void *framebuffer;
+  const char *modevar;
+  struct grub_freebsd_btinfo_framebuf efifb;
+  grub_err_t err;
+  grub_video_driver_id_t driv_id;
+
+  modevar = grub_env_get ("gfxpayload");
+
+  /* Now all graphical modes are acceptable.
+     May change in future if we have modes without framebuffer.  */
+  if (modevar && *modevar != 0)
+    {
+      char *tmp;
+      tmp = grub_xasprintf ("%s;" FREEBSD_DEFAULT_VIDEO_MODE, modevar);
+      if (! tmp)
+	return grub_errno;
+      err = grub_video_set_mode (tmp, 0, 0);
+      grub_free (tmp);
+    }
+  else
+    err = grub_video_set_mode (FREEBSD_DEFAULT_VIDEO_MODE, 0, 0);
+
+  if (err)
+    return err;
+
+  driv_id = grub_video_get_driver_id ();
+  if (driv_id == GRUB_VIDEO_DRIVER_NONE)
+    return GRUB_ERR_NONE;
+
+  err = grub_video_get_info_and_fini (&mode_info, &framebuffer);
+
+  if (err)
+    return err;
+
+  efifb.fb_width = mode_info.width;
+  efifb.fb_height = mode_info.height;
+  efifb.fb_stride = mode_info.stride;
+
+  efifb.fb_addr = (grub_addr_t) framebuffer;
+  efifb.fb_size = ALIGN_UP (mode_info.pitch * efifb.fb_height, 65536);
+
+  efifb.fb_mask_red = mode_info.red_mask;
+  efifb.fb_mask_green = mode_info.green_mask;
+  efifb.fb_mask_blue = mode_info.blue_mask;
+  efifb.fb_mask_reserved = mode_info.reserved_mask;
+
+  err = grub_bsd_add_meta ( FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF, &efifb, sizeof (efifb));
+  return err;
+}
+#endif
+
 static grub_err_t
 grub_freebsd_boot (void)
 {
@@ -687,6 +745,10 @@ grub_freebsd_boot (void)
 		*(grub_uint32_t *) p_tag = bootflags;
 	      break;
 
+	    case FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF:
+	      grub_memcpy (p_tag, tag->data, tag->len);
+	      break;
+
 	    case FREEBSD_MODINFO_METADATA | FREEBSD_MODINFOMD_ENVP:
 	      if (is_64bit)
 		*(grub_uint64_t *) p_tag = bi.environment;
@@ -716,7 +778,10 @@ grub_freebsd_boot (void)
 
   bi.kern_end = kern_end;
 
+#ifndef GRUB_MACHINE_EFI
+  /* Don't set text mode on EFI boot */
   grub_video_set_mode ("text", 0, 0);
+#endif
 
   if (is_64bit)
     {
@@ -1560,6 +1625,16 @@ grub_cmd_freebsd (grub_extcmd_context_t ctxt, int argc, char *argv[])
 				   FREEBSD_MODINFOMD_KERNEND, &data, len);
 	  if (err)
 	    return err;
+
+#ifdef GRUB_MACHINE_EFI
+	  err = grub_freebsd_setup_video ();
+	  if (err)
+	  {
+	    grub_print_error ();
+	    grub_puts_ (N_("Booting in EFI blind mode"));
+	    grub_errno = GRUB_ERR_NONE;
+	  }
+#endif
 	}
       grub_bsd_get_device (&freebsd_biosdev, &unit, &slice, &part);
       freebsd_zfsguid = 0;
video/efi_gop.c +0 -0
index 7f9d1c2..cfe0119 100644

video/efi_gop.c grub_video_gop_fill_real_mode_info (unsigned mode, · line 184

Quoted 5 lines
video/efi_gop.c +2 -0
@@ -180,6 +180,8 @@ grub_video_gop_fill_real_mode_info (unsigned mode,
   out->mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
   out->bpp = grub_video_gop_get_bpp (in);
   out->bytes_per_pixel = out->bpp >> 3;
+  out->stride = in->pixels_per_scanline;
+  out->pixel_format = in->pixel_format;

Please, don't add redundant fields to structs. All this info can be inferred from available fields in FreeBSD code. As a bonus it will work with other gfx drivers.
Another point: is this driver usable on non-EFI? It's of particular interest on coreboot where changing video mode currently requires reflash.

author
#4 lore raw
Quoted 165 lines · Vladimir 'φ-coder/phcoder' Serbinenko
Quoted 151 lines · Kris Moore

Got another patch for review today.

This patch adds support for FreeBSD's new VT console driver when booting in EFI mode on FreeBSD 10.1 and later.

Please let me know any comments, or things that need addressed to get this merged in.

Thanks!

-- Kris Moore PC-BSD Software iXsystems

patch-grub-fb

From a9c20c1640cdea0ba902095cb18760f5ebe98875 Mon Sep 17 00:00:00 2001
From: Kris Moore <[email protected]>
Date: Tue, 28 Oct 2014 15:59:59 -0400
Subject: [PATCH 1/2] Add support for passing EFI framebuffer information to
FreeBSD kernel on FreeBSD 10.1 and later.

---
 grub-core/loader/i386/bsd.c          | 75 ++++++++++++++++++++++++++++++++++++
 grub-core/video/efi_gop.c            | 14 +++++++
 include/grub/i386/bsd.h              |  1 +
 include/grub/i386/freebsd_bootinfo.h | 33 ++++++++++++++++
 include/grub/video.h                 | 18 +++++++++
 5 files changed, 141 insertions(+)
 create mode 100644 include/grub/i386/freebsd_bootinfo.h
loader/i386/bsd.c +75 -0
index 8f691e0..c685552 100644
@@ -48,6 +48,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
 #ifdef GRUB_MACHINE_EFI
 #include <grub/efi/efi.h>
 #define NETBSD_DEFAULT_VIDEO_MODE "800x600"
+#define FREEBSD_DEFAULT_VIDEO_MODE "800x600"
 #else
 #define NETBSD_DEFAULT_VIDEO_MODE "text"
 #include <grub/i386/pc/vbe.h>
@@ -584,6 +585,63 @@ freebsd_get_zfs (void)
   grub_free (uuid);
 }
 
+#ifdef GRUB_MACHINE_EFI
+
+static grub_err_t
+grub_freebsd_setup_video (void)
+{
+  struct grub_video_mode_info mode_info;
+  void *framebuffer;
+  const char *modevar;
+  struct grub_freebsd_btinfo_framebuf efifb;
+  grub_err_t err;
+  grub_video_driver_id_t driv_id;
+
+  modevar = grub_env_get ("gfxpayload");
+
+  /* Now all graphical modes are acceptable.
+     May change in future if we have modes without framebuffer.  */
+  if (modevar && *modevar != 0)
+    {
+      char *tmp;
+      tmp = grub_xasprintf ("%s;" FREEBSD_DEFAULT_VIDEO_MODE, modevar);
+      if (! tmp)
+	return grub_errno;
+      err = grub_video_set_mode (tmp, 0, 0);
+      grub_free (tmp);
+    }
+  else
+    err = grub_video_set_mode (FREEBSD_DEFAULT_VIDEO_MODE, 0, 0);
+
+  if (err)
+    return err;
+
+  driv_id = grub_video_get_driver_id ();
+  if (driv_id == GRUB_VIDEO_DRIVER_NONE)
+    return GRUB_ERR_NONE;
+
+  err = grub_video_get_info_and_fini (&mode_info, &framebuffer);
+
+  if (err)
+    return err;
+
+  efifb.fb_width = mode_info.width;
+  efifb.fb_height = mode_info.height;
+  efifb.fb_stride = mode_info.stride;
+
+  efifb.fb_addr = (grub_addr_t) framebuffer;
+  efifb.fb_size = ALIGN_UP (mode_info.pitch * efifb.fb_height, 65536);
+
+  efifb.fb_mask_red = mode_info.red_mask;
+  efifb.fb_mask_green = mode_info.green_mask;
+  efifb.fb_mask_blue = mode_info.blue_mask;
+  efifb.fb_mask_reserved = mode_info.reserved_mask;
+
+  err = grub_bsd_add_meta ( FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF, &efifb, sizeof (efifb));
+  return err;
+}
+#endif
+
 static grub_err_t
 grub_freebsd_boot (void)
 {
@@ -687,6 +745,10 @@ grub_freebsd_boot (void)
 		*(grub_uint32_t *) p_tag = bootflags;
 	      break;
 
+	    case FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF:
+	      grub_memcpy (p_tag, tag->data, tag->len);
+	      break;
+
 	    case FREEBSD_MODINFO_METADATA | FREEBSD_MODINFOMD_ENVP:
 	      if (is_64bit)
 		*(grub_uint64_t *) p_tag = bi.environment;
@@ -716,7 +778,10 @@ grub_freebsd_boot (void)
 
   bi.kern_end = kern_end;
 
+#ifndef GRUB_MACHINE_EFI
+  /* Don't set text mode on EFI boot */
   grub_video_set_mode ("text", 0, 0);
+#endif
 
   if (is_64bit)
     {
@@ -1560,6 +1625,16 @@ grub_cmd_freebsd (grub_extcmd_context_t ctxt, int argc, char *argv[])
 				   FREEBSD_MODINFOMD_KERNEND, &data, len);
 	  if (err)
 	    return err;
+
+#ifdef GRUB_MACHINE_EFI
+	  err = grub_freebsd_setup_video ();
+	  if (err)
+	  {
+	    grub_print_error ();
+	    grub_puts_ (N_("Booting in EFI blind mode"));
+	    grub_errno = GRUB_ERR_NONE;
+	  }
+#endif
 	}
       grub_bsd_get_device (&freebsd_biosdev, &unit, &slice, &part);
       freebsd_zfsguid = 0;
video/efi_gop.c +0 -0
index 7f9d1c2..cfe0119 100644

video/efi_gop.c grub_video_gop_fill_real_mode_info (unsigned mode, · line 184

Quoted 5 lines
video/efi_gop.c +2 -0
@@ -180,6 +180,8 @@ grub_video_gop_fill_real_mode_info (unsigned mode,
   out->mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
   out->bpp = grub_video_gop_get_bpp (in);
   out->bytes_per_pixel = out->bpp >> 3;
+  out->stride = in->pixels_per_scanline;
+  out->pixel_format = in->pixel_format;

Please, don't add redundant fields to structs. All this info can be inferred from available fields in FreeBSD code. As a bonus it will work with other gfx drivers.
Another point: is this driver usable on non-EFI? It's of particular interest on coreboot where changing video mode currently requires reflash.

Quoted 4 lines

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Attached is a cleaned up version of the patch which doesn't add to any existing structs now. Let me know if this is closer to what you had in mind.

I don't think this driver is usable on non-EFI FreeBSD yet. They have a new VT console driver, but I'm not sure their loader does video mode passthrough outside of EFI. I'm sure it will in the future, probably sometime in 11.X.

Signature · 3 lines
Kris Moore
PC-BSD Software
iXsystems

From 997363ec7698f34d74769960c4e76cf8b369052e Mon Sep 17 00:00:00 2001
From: Kris Moore <[email protected]>
Date: Tue, 30 Dec 2014 14:34:58 -0500
Subject: [PATCH] Add the patch for FreeBSD UEFI booting / framebuffer
passthrough, add fixes to ACPI environment variables while here

---
 ChangeLog                            |   9 +++
 grub-core/loader/i386/bsd.c          | 134 +++++++++++++++++++++++++++++++++++
 include/grub/i386/bsd.h              |   1 +
 include/grub/i386/freebsd_bootinfo.h |  33 +++++++++
 4 files changed, 177 insertions(+)
 create mode 100644 include/grub/i386/freebsd_bootinfo.h
ChangeLog +9 -0
index c38917b..b717a2d 100644
@@ -1,3 +1,12 @@
+2014-12-30  Kris Moore  <[email protected]>
+	* grub-core/loader/i386/bsd.c: Set FreeBSD specific ACPI hints when booting
+	in EFI mode
+	* grub-core/loader/i386/bsd.c: Add default FreeBSD EFI video mode, and
+	structure to pass information into EFI booted kernel
+	* include/grub/i386/bsd.h: Include new freebsd_bootinfo.h
+	* include/grub/i386/freebsd_bootinfo.h: Add grub_freebsd_btinfo_framebuf
+	structure for FreeBSD EFI framebuffer passthrough
+
 2014-12-09  Andrei Borzenkov  <[email protected]>
 
 	* grub-core/term/serial.c (grub_cmd_serial): Fix --rtscts
loader/i386/bsd.c +134 -0

177 lines not on this page · raw message

grub/i386/bsd.h +1 -0
index 524d47a..b7bb545 100644
@@ -26,6 +26,7 @@
 #include <grub/i386/netbsd_reboot.h>
 #include <grub/i386/openbsd_reboot.h>
 #include <grub/i386/freebsd_linker.h>
+#include <grub/i386/freebsd_bootinfo.h>
 #include <grub/i386/netbsd_bootinfo.h>
 #include <grub/i386/openbsd_bootarg.h>
 
grub/i386/freebsd_bootinfo.h new file +33 -0
new file mode 100644
index 0000000..17e5997
@@ -0,0 +1,33 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+
+#define FREEBSD_BTINFO_FRAMEBUF  0x1005
+
+struct grub_freebsd_btinfo_framebuf {
+  grub_uint64_t        fb_addr;
+  grub_uint64_t        fb_size;
+  grub_int32_t         fb_height;
+  grub_int32_t         fb_width;
+  grub_int32_t         fb_stride;
+  grub_uint32_t        fb_mask_red;
+  grub_uint32_t        fb_mask_green;
+  grub_uint32_t        fb_mask_blue;
+  grub_uint32_t        fb_mask_reserved;
+};
Signature · 1 line
2.2.1
#2 lore raw
In reply to Kris Moore
Quoted 13 lines · Kris Moore
Quoted 12 lines · Kris Moore

Got another patch for review today.

This patch adds support for FreeBSD's new VT console driver when booting in EFI mode on FreeBSD 10.1 and later.

Please let me know any comments, or things that need addressed to get this merged in.

Thanks!

Quoted 9 lines
Quoted 4 lines

_______________________________________________
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https://lists.gnu.org/mailman/listinfo/grub-devel

An updated version of this patch is now in the FreeBSD ports tree:

https://svnweb.freebsd.org/ports/head/sysutils/grub2-efi/files/patch-grub-efi-framebuffer?revision=371769&view=co

Sorry, we cannot accept patches if they're not sent to this ML.

Quoted 17 lines

This updated version adds some ACPI detection / hints that the FreeBSD kernel requires to UEFI boot on most systems.

Thanks!

Signature · 10 lines
Kris Moore
PC-BSD Software
iXsystems



_______________________________________________
Grub-devel mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/grub-devel
#5 lore raw
In reply to Kris Moore
Quoted 70 lines

Attached is a cleaned up version of the patch which doesn't add to any existing structs now. Let me know if this is closer to what you had in mind.

I don't think this driver is usable on non-EFI FreeBSD yet. They have a new VT console driver, but I'm not sure their loader does video mode passthrough outside of EFI. I'm sure it will in the future, probably sometime in 11.X.

Signature · 21 lines
Kris Moore
PC-BSD Software
iXsystems


patch-grub-efi-framebuffer


From 997363ec7698f34d74769960c4e76cf8b369052e Mon Sep 17 00:00:00 2001
From: Kris Moore <[email protected]>
Date: Tue, 30 Dec 2014 14:34:58 -0500
Subject: [PATCH] Add the patch for FreeBSD UEFI booting / framebuffer
 passthrough, add fixes to ACPI environment variables while here

---
 ChangeLog                            |   9 +++
 grub-core/loader/i386/bsd.c          | 134 +++++++++++++++++++++++++++++++++++
 include/grub/i386/bsd.h              |   1 +
 include/grub/i386/freebsd_bootinfo.h |  33 +++++++++
 4 files changed, 177 insertions(+)
 create mode 100644 include/grub/i386/freebsd_bootinfo.h
ChangeLog +9 -0
index c38917b..b717a2d 100644
@@ -1,3 +1,12 @@
+2014-12-30  Kris Moore  <[email protected]>
+	* grub-core/loader/i386/bsd.c: Set FreeBSD specific ACPI hints when booting
+	in EFI mode
+	* grub-core/loader/i386/bsd.c: Add default FreeBSD EFI video mode, and
+	structure to pass information into EFI booted kernel
+	* include/grub/i386/bsd.h: Include new freebsd_bootinfo.h
+	* include/grub/i386/freebsd_bootinfo.h: Add grub_freebsd_btinfo_framebuf
+	structure for FreeBSD EFI framebuffer passthrough
+
 2014-12-09  Andrei Borzenkov  <[email protected]>
 
 	* grub-core/term/serial.c (grub_cmd_serial): Fix --rtscts
loader/i386/bsd.c +2 -0
index 8f691e0..9d51cff 100644
@@ -42,12 +42,14 @@
 GRUB_MOD_LICENSE ("GPLv3+");
 
 #include <grub/video.h>
+#include <grub/acpi.h>
 #ifdef GRUB_MACHINE_PCBIOS
 #include <grub/machine/biosnum.h>
 #endif
 #ifdef GRUB_MACHINE_EFI
 #include <grub/efi/efi.h>
 #define NETBSD_DEFAULT_VIDEO_MODE "800x600"
+#define FREEBSD_DEFAULT_VIDEO_MODE "800x600"
 #else
 #define NETBSD_DEFAULT_VIDEO_MODE "text"
 #include <grub/i386/pc/vbe.h>

loader/i386/bsd.c freebsd_get_zfs (void) · line 590

Quoted 5 lines
loader/i386/bsd.c +2 -0
@@ -584,6 +586,72 @@ freebsd_get_zfs (void)
   grub_free (uuid);
 }
 
+#ifdef GRUB_MACHINE_EFI
+

This shouldn't be limited to EFI. Just EFI would use GFX default while BIOS would use text.

Quoted 32 lines
loader/i386/bsd.c +32 -0
+static grub_err_t
+grub_freebsd_setup_video (void)
+{
+  struct grub_video_mode_info mode_info;
+  void *framebuffer;
+  const char *modevar;
+  struct grub_freebsd_btinfo_framebuf efifb;
+  grub_err_t err;
+  grub_video_driver_id_t driv_id;
+
+  modevar = grub_env_get ("gfxpayload");
+
+  /* Now all graphical modes are acceptable.
+     May change in future if we have modes without framebuffer.  */
+  if (modevar && *modevar != 0)
+    {
+      char *tmp;
+      tmp = grub_xasprintf ("%s;" FREEBSD_DEFAULT_VIDEO_MODE, modevar);
+      if (! tmp)
+	return grub_errno;
+      err = grub_video_set_mode (tmp, 0, 0);
+      grub_free (tmp);
+    }
+  else
+    err = grub_video_set_mode (FREEBSD_DEFAULT_VIDEO_MODE, 0, 0);
+
+  if (err)
+    return err;
+
+  driv_id = grub_video_get_driver_id ();
+  if (driv_id == GRUB_VIDEO_DRIVER_NONE)
+    return GRUB_ERR_NONE;

loader/i386/bsd.c freebsd_get_zfs (void) · line 632

Quoted 10 lines
loader/i386/bsd.c +10 -0
+
+  err = grub_video_get_info_and_fini (&mode_info, &framebuffer);
+
+  if (err)
+    return err;
+
+  efifb.fb_width = mode_info.width;
+  efifb.fb_height = mode_info.height;
+  efifb.fb_stride = mode_info.pitch / mode_info.bytes_per_pixel;
+

Is bytes_per_pixel checked against 0 somewhere?

Quoted 7 lines
loader/i386/bsd.c +7 -0
+  efifb.fb_addr = (grub_addr_t) framebuffer;
+  efifb.fb_size = ALIGN_UP (mode_info.pitch * efifb.fb_height, 65536);
+
+  if ( mode_info.blue_field_pos == 16 ) {
+    efifb.fb_mask_red = 0x000000ff;
+    efifb.fb_mask_green = 0x0000ff00;
+    efifb.fb_mask_blue = 0x00ff0000;

loader/i386/bsd.c freebsd_get_zfs (void) · line 649

Quoted 10 lines
loader/i386/bsd.c +10 -0
+  }
+
+  if ( mode_info.blue_field_pos == 0 ) {
+    efifb.fb_mask_red = 0x00ff0000;
+    efifb.fb_mask_green = 0x0000ff00;
+    efifb.fb_mask_blue = 0x000000ff;
+  }
+
+  efifb.fb_mask_reserved = 0xff000000;
+

Why these conditions? Why not use universal function? efifb.fb_mask_red = ((1 << mode_info.red_size) - 1) << mode_info.red_field_pos
and so on

Quoted 48 lines
loader/i386/bsd.c +41 -0
+  err = grub_bsd_add_meta ( FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF, &efifb, sizeof (efifb));
+  return err;
+}
+#endif
+
 static grub_err_t
 grub_freebsd_boot (void)
 {
@@ -602,6 +670,55 @@ grub_freebsd_boot (void)
 
   bi.boot_device = freebsd_biosdev;
 
+#ifdef GRUB_MACHINE_EFI
+  /* When booting in EFI mode, we need to export some additional kernel ACPI hints */
+  struct grub_acpi_rsdp_v10 *v1;
+  struct grub_acpi_rsdp_v20 *v2;
+  v1 = grub_acpi_get_rsdpv1 ();
+  v2 = grub_acpi_get_rsdpv2 ();
+  if (v2 && v2->length > 40)
+    v2 = 0;
+
+  int revision;
+  char acpiBuf[24];
+
+  if (v1)
+  {
+     revision = v1->revision;
+     if ( revision == 0 )
+        revision = 1;
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "%d", revision);
+     grub_env_set("kFreeBSD.hint.acpi.0.revision", acpiBuf);
+
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "%s", v1->oemid);
+     grub_env_set("kFreeBSD.hint.acpi.0.oem", acpiBuf);
+
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "0x%016x", v1->rsdt_addr);
+     grub_env_set("kFreeBSD.hint.acpi.0.rsdt", acpiBuf);
+
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "0x%016llx", (unsigned long long)v1);
+     grub_env_set("kFreeBSD.hint.acpi.0.rsdp", acpiBuf);
+  }
+
+  if (v2)
+  {
+     revision = v2->rsdpv1.revision;
+     if ( revision == 0 )
+        revision = 1;
+

loader/i386/bsd.c grub_freebsd_boot (void) · line 718

Quoted 10 lines
loader/i386/bsd.c +10 -0
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "%d", revision);
+     grub_env_set("kFreeBSD.hint.acpi.0.revision", acpiBuf);
+
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "0x%016llx", (unsigned long long)v2->xsdt_addr);
+     grub_env_set("kFreeBSD.hint.acpi.0.xsdt", acpiBuf);
+
+     grub_snprintf (acpiBuf, sizeof (acpiBuf), "%d", v2->length);
+     grub_env_set("kFreeBSD.hint.acpi.0.xsdt_length", acpiBuf);
+  }
+

This has to be a separate commit

Quoted 75 lines
loader/i386/bsd.c +20 -0
+
+#endif
+
   p_size = 0;
   FOR_SORTED_ENV (var)
     if ((grub_memcmp (var->name, "kFreeBSD.", sizeof("kFreeBSD.") - 1) == 0) && (var->name[sizeof("kFreeBSD.") - 1]))
@@ -687,6 +804,10 @@ grub_freebsd_boot (void)
 		*(grub_uint32_t *) p_tag = bootflags;
 	      break;
 
+	    case FREEBSD_MODINFO_METADATA | FREEBSD_BTINFO_FRAMEBUF:
+	      grub_memcpy (p_tag, tag->data, tag->len);
+	      break;
+
 	    case FREEBSD_MODINFO_METADATA | FREEBSD_MODINFOMD_ENVP:
 	      if (is_64bit)
 		*(grub_uint64_t *) p_tag = bi.environment;
@@ -716,7 +837,10 @@ grub_freebsd_boot (void)
 
   bi.kern_end = kern_end;
 
+#ifndef GRUB_MACHINE_EFI
+  /* Don't set text mode on EFI boot */
   grub_video_set_mode ("text", 0, 0);
+#endif
 
   if (is_64bit)
     {
@@ -1560,6 +1684,16 @@ grub_cmd_freebsd (grub_extcmd_context_t ctxt, int argc, char *argv[])
 				   FREEBSD_MODINFOMD_KERNEND, &data, len);
 	  if (err)
 	    return err;
+
+#ifdef GRUB_MACHINE_EFI
+	  err = grub_freebsd_setup_video ();
+	  if (err)
+	  {
+	    grub_print_error ();
+	    grub_puts_ (N_("Booting in EFI blind mode"));
+	    grub_errno = GRUB_ERR_NONE;
+	  }
+#endif
 	}
       grub_bsd_get_device (&freebsd_biosdev, &unit, &slice, &part);
       freebsd_zfsguid = 0;
grub/i386/freebsd_bootinfo.h new file +23 -0
new file mode 100644
index 0000000..17e5997
@@ -0,0 +1,33 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+
+#define FREEBSD_BTINFO_FRAMEBUF  0x1005
+
+struct grub_freebsd_btinfo_framebuf {

grub/i386/freebsd_bootinfo.h line 33

Quoted 10 lines
grub/i386/freebsd_bootinfo.h new file +10 -0
+  grub_uint64_t        fb_addr;
+  grub_uint64_t        fb_size;
+  grub_int32_t         fb_height;
+  grub_int32_t         fb_width;
+  grub_int32_t         fb_stride;
+  grub_uint32_t        fb_mask_red;
+  grub_uint32_t        fb_mask_green;
+  grub_uint32_t        fb_mask_blue;
+  grub_uint32_t        fb_mask_reserved;
+};

This file looks copied. Please provide correct attribution.

Quoted 9 lines

-- 2.2.1

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