[grub2.git] / loader / i386 / multiboot_mbi.c

/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2007,2008,2009  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 <http://www.gnu.org/licenses/>.
 */

#include <grub/machine/memory.h>
#include <grub/memory.h>
#ifdef GRUB_MACHINE_PCBIOS
#include <grub/machine/biosnum.h>
#endif
#include <grub/multiboot.h>
#include <grub/cpu/multiboot.h>
#include <grub/disk.h>
#include <grub/device.h>
#include <grub/partition.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/video.h>

struct module
{
  struct module *next;
  grub_addr_t start;
  grub_size_t size;
  char *cmdline;
  int cmdline_size;
};

struct module *modules, *modules_last;
static grub_size_t cmdline_size;
static grub_size_t total_modcmd;
static unsigned modcnt;
static char *cmdline = NULL;
static grub_uint32_t bootdev;
static int bootdev_set;

grub_size_t
grub_multiboot_get_mbi_size (void)
{
  return sizeof (struct multiboot_info) + ALIGN_UP (cmdline_size, 4)
    + modcnt * sizeof (struct multiboot_mod_list) + total_modcmd
    + ALIGN_UP (sizeof(PACKAGE_STRING), 4) 
    + grub_get_multiboot_mmap_count () * sizeof (struct multiboot_mmap_entry)
#if GRUB_MACHINE_HAS_VBE
    + sizeof (struct grub_vbe_info_block)
    + sizeof (struct grub_vbe_mode_info_block)
#endif
    + 256 * sizeof (struct multiboot_color);
}

/* Fill previously allocated Multiboot mmap.  */
static void
grub_fill_multiboot_mmap (struct multiboot_mmap_entry *first_entry)
{
  struct multiboot_mmap_entry *mmap_entry = (struct multiboot_mmap_entry *) first_entry;

  auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
  int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
    {
      mmap_entry->addr = addr;
      mmap_entry->len = size;
      switch (type)
	{
	case GRUB_MACHINE_MEMORY_AVAILABLE:
 	  mmap_entry->type = MULTIBOOT_MEMORY_AVAILABLE;
 	  break;

#ifdef GRUB_MACHINE_MEMORY_ACPI_RECLAIMABLE
	case GRUB_MACHINE_MEMORY_ACPI_RECLAIMABLE:
 	  mmap_entry->type = MULTIBOOT_MEMORY_ACPI_RECLAIMABLE;
 	  break;
#endif

#ifdef GRUB_MACHINE_MEMORY_NVS
	case GRUB_MACHINE_MEMORY_NVS:
 	  mmap_entry->type = MULTIBOOT_MEMORY_NVS;
 	  break;
#endif	  
	  
 	default:
 	  mmap_entry->type = MULTIBOOT_MEMORY_RESERVED;
 	  break;
 	}
      mmap_entry->size = sizeof (struct multiboot_mmap_entry) - sizeof (mmap_entry->size);
      mmap_entry++;

      return 0;
    }

  grub_mmap_iterate (hook);
}

static grub_err_t
retrieve_video_parameters (struct multiboot_info *mbi,
			   grub_uint8_t *ptrorig, grub_uint32_t ptrdest)
{
  grub_err_t err;
  struct grub_video_mode_info mode_info;
  void *framebuffer;
  grub_video_driver_id_t driv_id;
  struct grub_video_palette_data palette[256];

  err = grub_multiboot_set_video_mode ();
  if (err)
    {
      grub_print_error ();
      grub_errno = GRUB_ERR_NONE;
    }

  grub_video_get_palette (0, ARRAY_SIZE (palette), palette);

  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;

  mbi->framebuffer_addr = (grub_addr_t) framebuffer;
  mbi->framebuffer_pitch = mode_info.pitch;

  mbi->framebuffer_width = mode_info.width;
  mbi->framebuffer_height = mode_info.height;

  mbi->framebuffer_bpp = mode_info.bpp;
      
  if (mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_INDEX_COLOR)
    {
      struct multiboot_color *mb_palette;
      unsigned i;
      mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED;
      mbi->framebuffer_palette_addr = ptrdest;
      mbi->framebuffer_palette_num_colors = mode_info.number_of_colors;
      if (mbi->framebuffer_palette_num_colors > ARRAY_SIZE (palette))
	mbi->framebuffer_palette_num_colors = ARRAY_SIZE (palette);
      mb_palette = (struct multiboot_color *) ptrorig;
      for (i = 0; i < mbi->framebuffer_palette_num_colors; i++)
	{
	  mb_palette[i].red = palette[i].r;
	  mb_palette[i].green = palette[i].g;
	  mb_palette[i].blue = palette[i].b;
	}
      ptrorig += mbi->framebuffer_palette_num_colors
	* sizeof (struct multiboot_color);
      ptrdest += mbi->framebuffer_palette_num_colors
	* sizeof (struct multiboot_color);
    }
  else
    {
      mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_RGB;
      mbi->framebuffer_red_field_position = mode_info.green_field_pos;
      mbi->framebuffer_red_mask_size = mode_info.green_mask_size;
      mbi->framebuffer_green_field_position = mode_info.green_field_pos;
      mbi->framebuffer_green_mask_size = mode_info.green_mask_size;
      mbi->framebuffer_blue_field_position = mode_info.blue_field_pos;
      mbi->framebuffer_blue_mask_size = mode_info.blue_mask_size;
    }

  mbi->flags |= MULTIBOOT_INFO_FRAMEBUFFER_INFO;

  return GRUB_ERR_NONE;
}

grub_err_t
grub_multiboot_make_mbi (void *orig, grub_uint32_t dest, grub_off_t buf_off,
			 grub_size_t bufsize)
{
  grub_uint8_t *ptrorig = (grub_uint8_t *) orig + buf_off;
  grub_uint32_t ptrdest = dest + buf_off;
  struct multiboot_info *mbi;
  struct multiboot_mod_list *modlist;
  unsigned i;
  struct module *cur;
  grub_size_t mmap_size;
  grub_err_t err;

  if (bufsize < grub_multiboot_get_mbi_size ())
    return grub_error (GRUB_ERR_OUT_OF_MEMORY, "mbi buffer is too small");

  mbi = (struct multiboot_info *) ptrorig;
  ptrorig += sizeof (*mbi);
  ptrdest += sizeof (*mbi);
  grub_memset (mbi, 0, sizeof (*mbi));

  grub_memcpy (ptrorig, cmdline, cmdline_size);
  mbi->flags |= MULTIBOOT_INFO_CMDLINE;
  mbi->cmdline = ptrdest;
  ptrorig += ALIGN_UP (cmdline_size, 4);
  ptrdest += ALIGN_UP (cmdline_size, 4);

  grub_memcpy (ptrorig, PACKAGE_STRING, sizeof(PACKAGE_STRING));
  mbi->flags |= MULTIBOOT_INFO_BOOT_LOADER_NAME;
  mbi->boot_loader_name = ptrdest;
  ptrorig += ALIGN_UP (sizeof(PACKAGE_STRING), 4);
  ptrdest += ALIGN_UP (sizeof(PACKAGE_STRING), 4);

  if (modcnt)
    {
      mbi->flags |= MULTIBOOT_INFO_MODS;
      mbi->mods_addr = ptrdest;
      mbi->mods_count = modcnt;
      modlist = (struct multiboot_mod_list *) ptrorig;
      ptrorig += modcnt * sizeof (struct multiboot_mod_list);
      ptrdest += modcnt * sizeof (struct multiboot_mod_list);

      for (i = 0, cur = modules; i < modcnt; i++, cur = cur->next)
	{
	  modlist[i].mod_start = cur->start;
	  modlist[i].mod_end = modlist[i].mod_start + cur->size;
	  modlist[i].cmdline = ptrdest;
	  grub_memcpy (ptrorig, cur->cmdline, cur->cmdline_size);
	  ptrorig += ALIGN_UP (cur->cmdline_size, 4);
	  ptrdest += ALIGN_UP (cur->cmdline_size, 4);
	}
    }
  else
    {
      mbi->mods_addr = 0;
      mbi->mods_count = 0;
    }

  mmap_size = grub_get_multiboot_mmap_count () 
    * sizeof (struct multiboot_mmap_entry);
  grub_fill_multiboot_mmap ((struct multiboot_mmap_entry *) ptrorig);
  mbi->mmap_length = mmap_size;
  mbi->mmap_addr = ptrdest;
  mbi->flags |= MULTIBOOT_INFO_MEM_MAP;
  ptrorig += mmap_size;
  ptrdest += mmap_size;

  /* Convert from bytes to kilobytes.  */
  mbi->mem_lower = grub_mmap_get_lower () / 1024;
  mbi->mem_upper = grub_mmap_get_upper () / 1024;
  mbi->flags |= MULTIBOOT_INFO_MEMORY;

  if (bootdev_set)
    {
      mbi->boot_device = bootdev;
      mbi->flags |= MULTIBOOT_INFO_BOOTDEV;
    }

  err = retrieve_video_parameters (mbi, ptrorig, ptrdest);
  if (err)
    {
      grub_print_error ();
      grub_errno = GRUB_ERR_NONE;
    }
#if GRUB_MACHINE_HAS_VBE
  ptrorig += sizeof (struct grub_vbe_info_block);
  ptrdest += sizeof (struct grub_vbe_info_block);
  ptrorig += sizeof (struct grub_vbe_mode_info_block);
  ptrdest += sizeof (struct grub_vbe_mode_info_block);
#endif

  return GRUB_ERR_NONE;
}

void
grub_multiboot_free_mbi (void)
{
  struct module *cur, *next;

  cmdline_size = 0;
  total_modcmd = 0;
  modcnt = 0;
  grub_free (cmdline);
  cmdline = NULL;
  bootdev_set = 0;

  for (cur = modules; cur; cur = next)
    {
      next = cur->next;
      grub_free (cur->cmdline);
      grub_free (cur);
    }
  modules = NULL;
  modules_last = NULL;
}

grub_err_t
grub_multiboot_init_mbi (int argc, char *argv[])
{
  grub_ssize_t len = 0;
  char *p;
  int i;

  grub_multiboot_free_mbi ();

  for (i = 0; i < argc; i++)
    len += grub_strlen (argv[i]) + 1;
  if (len == 0)
    len = 1;

  cmdline = p = grub_malloc (len);
  if (! cmdline)
    return grub_errno;
  cmdline_size = len;

  for (i = 0; i < argc; i++)
    {
      p = grub_stpcpy (p, argv[i]);
      *(p++) = ' ';
    }

  /* Remove the space after the last word.  */
  if (p != cmdline)
    p--;
  *p = '\0';

  return GRUB_ERR_NONE;
}

grub_err_t
grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
			   int argc, char *argv[])
{
  struct module *newmod;
  char *p;
  grub_ssize_t len = 0;
  int i;

  newmod = grub_malloc (sizeof (*newmod));
  if (!newmod)
    return grub_errno;
  newmod->start = start;
  newmod->size = size;

  for (i = 0; i < argc; i++)
    len += grub_strlen (argv[i]) + 1;

  if (len == 0)
    len = 1;

  newmod->cmdline = p = grub_malloc (len);
  if (! newmod->cmdline)
    {
      grub_free (newmod);
      return grub_errno;
    }
  newmod->cmdline_size = len;
  total_modcmd += ALIGN_UP (len, 4);

  for (i = 0; i < argc; i++)
    {
      p = grub_stpcpy (p, argv[i]);
      *(p++) = ' ';
    }

  /* Remove the space after the last word.  */
  if (p != newmod->cmdline)
    p--;
  *p = '\0';

  if (modules_last)
    modules_last->next = newmod;
  else
    {
      modules = newmod;
      modules_last->next = NULL;
    }
  modules_last = newmod;

  modcnt++;

  return GRUB_ERR_NONE;
}

void
grub_multiboot_set_bootdev (void)
{
  char *p;
  grub_uint32_t biosdev, slice = ~0, part = ~0;
  grub_device_t dev;

#ifdef GRUB_MACHINE_PCBIOS
  biosdev = grub_get_root_biosnumber ();
#else
  biosdev = 0xffffffff;
#endif

  if (biosdev == 0xffffffff)
    return;

  dev = grub_device_open (0);
  if (dev && dev->disk && dev->disk->partition)
    {
      char *p0;
      p = p0 = dev->disk->partition->partmap->get_name (dev->disk->partition);
      if (p)
	{
	  if ((p[0] >= '0') && (p[0] <= '9'))
	    {
	      slice = grub_strtoul (p, &p, 0) - 1;

	      if ((p) && (p[0] == ','))
		p++;
	    }

	  if ((p[0] >= 'a') && (p[0] <= 'z'))
	    part = p[0] - 'a';
	}
      grub_free (p0);
    }
  if (dev)
    grub_device_close (dev);

  bootdev = ((biosdev & 0xff) << 24) | ((slice & 0xff) << 16) 
    | ((part & 0xff) << 8) | 0xff;
  bootdev_set = 1;
}
Commit	Line	Data
cd051479 VS	1	/*
	2	* GRUB -- GRand Unified Bootloader
	3	* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
	4	*
	5	* GRUB is free software: you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation, either version 3 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* GRUB is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include <grub/machine/memory.h>
	20	#include <grub/memory.h>
	21	#ifdef GRUB_MACHINE_PCBIOS
	22	#include <grub/machine/biosnum.h>
	23	#endif
	24	#include <grub/multiboot.h>
	25	#include <grub/cpu/multiboot.h>
	26	#include <grub/disk.h>
	27	#include <grub/device.h>
	28	#include <grub/partition.h>
	29	#include <grub/mm.h>
	30	#include <grub/misc.h>
	31	#include <grub/env.h>
57e41c71 VS	32	#include <grub/video.h>
57e41c71 VS	33
cd051479 VS	34	struct module
	35	{
	36	struct module *next;
	37	grub_addr_t start;
	38	grub_size_t size;
	39	char *cmdline;
	40	int cmdline_size;
	41	};
	42
	43	struct module modules, modules_last;
	44	static grub_size_t cmdline_size;
	45	static grub_size_t total_modcmd;
	46	static unsigned modcnt;
	47	static char *cmdline = NULL;
	48	static grub_uint32_t bootdev;
	49	static int bootdev_set;
cd051479 VS	50
	51	grub_size_t
	52	grub_multiboot_get_mbi_size (void)
	53	{
	54	return sizeof (struct multiboot_info) + ALIGN_UP (cmdline_size, 4)
	55	+ modcnt * sizeof (struct multiboot_mod_list) + total_modcmd
8eb567e6 VS	56	+ ALIGN_UP (sizeof(PACKAGE_STRING), 4)
8eb567e6 VS	57	+ grub_get_multiboot_mmap_count () * sizeof (struct multiboot_mmap_entry)
5408044f	58	#if GRUB_MACHINE_HAS_VBE
57e41c71 VS	59	+ sizeof (struct grub_vbe_info_block)
	60	+ sizeof (struct grub_vbe_mode_info_block)
	61	#endif
	62	+ 256 * sizeof (struct multiboot_color);
cd051479 VS	63	}
	64
	65	/* Fill previously allocated Multiboot mmap. */
	66	static void
	67	grub_fill_multiboot_mmap (struct multiboot_mmap_entry *first_entry)
57e41c71	68	{
cd051479	69	struct multiboot_mmap_entry mmap_entry = (struct multiboot_mmap_entry ) first_entry;
5408044f	70
cd051479 VS	71	auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
	72	int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
	73	{
	74	mmap_entry->addr = addr;
	75	mmap_entry->len = size;
	76	switch (type)
	77	{
	78	case GRUB_MACHINE_MEMORY_AVAILABLE:
	79	mmap_entry->type = MULTIBOOT_MEMORY_AVAILABLE;
	80	break;
915fc1b8 VS	81
	82	#ifdef GRUB_MACHINE_MEMORY_ACPI_RECLAIMABLE
	83	case GRUB_MACHINE_MEMORY_ACPI_RECLAIMABLE:
	84	mmap_entry->type = MULTIBOOT_MEMORY_ACPI_RECLAIMABLE;
	85	break;
57e41c71 VS	86	#endif
57e41c71 VS	87
915fc1b8 VS	88	#ifdef GRUB_MACHINE_MEMORY_NVS
	89	case GRUB_MACHINE_MEMORY_NVS:
	90	mmap_entry->type = MULTIBOOT_MEMORY_NVS;
	91	break;
	92	#endif
cd051479 VS	93
	94	default:
	95	mmap_entry->type = MULTIBOOT_MEMORY_RESERVED;
	96	break;
	97	}
	98	mmap_entry->size = sizeof (struct multiboot_mmap_entry) - sizeof (mmap_entry->size);
	99	mmap_entry++;
	100
	101	return 0;
	102	}
	103
	104	grub_mmap_iterate (hook);
	105	}
	106
57e41c71 VS	107	static grub_err_t
	108	retrieve_video_parameters (struct multiboot_info *mbi,
	109	grub_uint8_t *ptrorig, grub_uint32_t ptrdest)
	110	{
	111	grub_err_t err;
	112	struct grub_video_mode_info mode_info;
	113	void *framebuffer;
01740292	114	grub_video_driver_id_t driv_id;
57e41c71 VS	115	struct grub_video_palette_data palette[256];
57e41c71 VS	116
5408044f	117	err = grub_multiboot_set_video_mode ();
57e41c71	118	if (err)
01740292 VS	119	{
	120	grub_print_error ();
	121	grub_errno = GRUB_ERR_NONE;
	122	}
57e41c71 VS	123
	124	grub_video_get_palette (0, ARRAY_SIZE (palette), palette);
	125
01740292	126	driv_id = grub_video_get_driver_id ();
01740292 VS	127	if (driv_id == GRUB_VIDEO_DRIVER_NONE)
01740292 VS	128	return GRUB_ERR_NONE;
57e41c71 VS	129
	130	err = grub_video_get_info_and_fini (&mode_info, &framebuffer);
	131	if (err)
	132	return err;
	133
	134	mbi->framebuffer_addr = (grub_addr_t) framebuffer;
	135	mbi->framebuffer_pitch = mode_info.pitch;
	136
	137	mbi->framebuffer_width = mode_info.width;
	138	mbi->framebuffer_height = mode_info.height;
	139
	140	mbi->framebuffer_bpp = mode_info.bpp;
	141
	142	if (mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_INDEX_COLOR)
	143	{
	144	struct multiboot_color *mb_palette;
	145	unsigned i;
	146	mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED;
	147	mbi->framebuffer_palette_addr = ptrdest;
	148	mbi->framebuffer_palette_num_colors = mode_info.number_of_colors;
	149	if (mbi->framebuffer_palette_num_colors > ARRAY_SIZE (palette))
	150	mbi->framebuffer_palette_num_colors = ARRAY_SIZE (palette);
	151	mb_palette = (struct multiboot_color *) ptrorig;
	152	for (i = 0; i < mbi->framebuffer_palette_num_colors; i++)
	153	{
	154	mb_palette[i].red = palette[i].r;
	155	mb_palette[i].green = palette[i].g;
	156	mb_palette[i].blue = palette[i].b;
	157	}
	158	ptrorig += mbi->framebuffer_palette_num_colors
	159	* sizeof (struct multiboot_color);
	160	ptrdest += mbi->framebuffer_palette_num_colors
	161	* sizeof (struct multiboot_color);
	162	}
	163	else
	164	{
	165	mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_RGB;
	166	mbi->framebuffer_red_field_position = mode_info.green_field_pos;
	167	mbi->framebuffer_red_mask_size = mode_info.green_mask_size;
	168	mbi->framebuffer_green_field_position = mode_info.green_field_pos;
	169	mbi->framebuffer_green_mask_size = mode_info.green_mask_size;
	170	mbi->framebuffer_blue_field_position = mode_info.blue_field_pos;
	171	mbi->framebuffer_blue_mask_size = mode_info.blue_mask_size;
	172	}
	173
	174	mbi->flags \|= MULTIBOOT_INFO_FRAMEBUFFER_INFO;
	175
57e41c71 VS	176	return GRUB_ERR_NONE;
	177	}
	178
cd051479 VS	179	grub_err_t
	180	grub_multiboot_make_mbi (void *orig, grub_uint32_t dest, grub_off_t buf_off,
	181	grub_size_t bufsize)
	182	{
	183	grub_uint8_t ptrorig = (grub_uint8_t ) orig + buf_off;
	184	grub_uint32_t ptrdest = dest + buf_off;
	185	struct multiboot_info *mbi;
	186	struct multiboot_mod_list *modlist;
	187	unsigned i;
	188	struct module *cur;
	189	grub_size_t mmap_size;
57e41c71	190	grub_err_t err;
cd051479 VS	191
	192	if (bufsize < grub_multiboot_get_mbi_size ())
	193	return grub_error (GRUB_ERR_OUT_OF_MEMORY, "mbi buffer is too small");
	194
	195	mbi = (struct multiboot_info *) ptrorig;
	196	ptrorig += sizeof (*mbi);
	197	ptrdest += sizeof (*mbi);
	198	grub_memset (mbi, 0, sizeof (*mbi));
	199
	200	grub_memcpy (ptrorig, cmdline, cmdline_size);
	201	mbi->flags \|= MULTIBOOT_INFO_CMDLINE;
	202	mbi->cmdline = ptrdest;
	203	ptrorig += ALIGN_UP (cmdline_size, 4);
	204	ptrdest += ALIGN_UP (cmdline_size, 4);
	205
	206	grub_memcpy (ptrorig, PACKAGE_STRING, sizeof(PACKAGE_STRING));
	207	mbi->flags \|= MULTIBOOT_INFO_BOOT_LOADER_NAME;
	208	mbi->boot_loader_name = ptrdest;
	209	ptrorig += ALIGN_UP (sizeof(PACKAGE_STRING), 4);
	210	ptrdest += ALIGN_UP (sizeof(PACKAGE_STRING), 4);
	211
	212	if (modcnt)
	213	{
	214	mbi->flags \|= MULTIBOOT_INFO_MODS;
	215	mbi->mods_addr = ptrdest;
	216	mbi->mods_count = modcnt;
	217	modlist = (struct multiboot_mod_list *) ptrorig;
	218	ptrorig += modcnt * sizeof (struct multiboot_mod_list);
	219	ptrdest += modcnt * sizeof (struct multiboot_mod_list);
	220
	221	for (i = 0, cur = modules; i < modcnt; i++, cur = cur->next)
	222	{
	223	modlist[i].mod_start = cur->start;
	224	modlist[i].mod_end = modlist[i].mod_start + cur->size;
	225	modlist[i].cmdline = ptrdest;
	226	grub_memcpy (ptrorig, cur->cmdline, cur->cmdline_size);
	227	ptrorig += ALIGN_UP (cur->cmdline_size, 4);
	228	ptrdest += ALIGN_UP (cur->cmdline_size, 4);
	229	}
	230	}
	231	else
	232	{
	233	mbi->mods_addr = 0;
	234	mbi->mods_count = 0;
	235	}
	236
8eb567e6 VS	237	mmap_size = grub_get_multiboot_mmap_count ()
8eb567e6 VS	238	* sizeof (struct multiboot_mmap_entry);
cd051479 VS	239	grub_fill_multiboot_mmap ((struct multiboot_mmap_entry *) ptrorig);
	240	mbi->mmap_length = mmap_size;
	241	mbi->mmap_addr = ptrdest;
	242	mbi->flags \|= MULTIBOOT_INFO_MEM_MAP;
	243	ptrorig += mmap_size;
	244	ptrdest += mmap_size;
	245
	246	/* Convert from bytes to kilobytes. */
	247	mbi->mem_lower = grub_mmap_get_lower () / 1024;
	248	mbi->mem_upper = grub_mmap_get_upper () / 1024;
	249	mbi->flags \|= MULTIBOOT_INFO_MEMORY;
	250
	251	if (bootdev_set)
	252	{
	253	mbi->boot_device = bootdev;
	254	mbi->flags \|= MULTIBOOT_INFO_BOOTDEV;
	255	}
	256
57e41c71 VS	257	err = retrieve_video_parameters (mbi, ptrorig, ptrdest);
	258	if (err)
	259	{
	260	grub_print_error ();
	261	grub_errno = GRUB_ERR_NONE;
	262	}
5408044f	263	#if GRUB_MACHINE_HAS_VBE
57e41c71 VS	264	ptrorig += sizeof (struct grub_vbe_info_block);
	265	ptrdest += sizeof (struct grub_vbe_info_block);
	266	ptrorig += sizeof (struct grub_vbe_mode_info_block);
	267	ptrdest += sizeof (struct grub_vbe_mode_info_block);
	268	#endif
	269
cd051479 VS	270	return GRUB_ERR_NONE;
	271	}
	272
	273	void
	274	grub_multiboot_free_mbi (void)
	275	{
	276	struct module cur, next;
	277
	278	cmdline_size = 0;
	279	total_modcmd = 0;
	280	modcnt = 0;
	281	grub_free (cmdline);
	282	cmdline = NULL;
	283	bootdev_set = 0;
	284
	285	for (cur = modules; cur; cur = next)
	286	{
	287	next = cur->next;
	288	grub_free (cur->cmdline);
	289	grub_free (cur);
	290	}
	291	modules = NULL;
	292	modules_last = NULL;
	293	}
	294
	295	grub_err_t
	296	grub_multiboot_init_mbi (int argc, char *argv[])
	297	{
	298	grub_ssize_t len = 0;
	299	char *p;
	300	int i;
	301
	302	grub_multiboot_free_mbi ();
	303
	304	for (i = 0; i < argc; i++)
	305	len += grub_strlen (argv[i]) + 1;
	306	if (len == 0)
	307	len = 1;
	308
	309	cmdline = p = grub_malloc (len);
	310	if (! cmdline)
	311	return grub_errno;
	312	cmdline_size = len;
	313
	314	for (i = 0; i < argc; i++)
	315	{
	316	p = grub_stpcpy (p, argv[i]);
	317	*(p++) = ' ';
	318	}
	319
	320	/* Remove the space after the last word. */
	321	if (p != cmdline)
	322	p--;
	323	*p = '\0';
	324
	325	return GRUB_ERR_NONE;
	326	}
	327
	328	grub_err_t
	329	grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
	330	int argc, char *argv[])
	331	{
	332	struct module *newmod;
	333	char *p;
334	grub_ssize_t len = 0;
335	int i;
336
337	newmod = grub_malloc (sizeof (*newmod));
338	if (!newmod)
339	return grub_errno;
340	newmod->start = start;
341	newmod->size = size;
342
343	for (i = 0; i < argc; i++)
344	len += grub_strlen (argv[i]) + 1;
345
346	if (len == 0)
347	len = 1;
348
349	newmod->cmdline = p = grub_malloc (len);
350	if (! newmod->cmdline)
351	{
352	grub_free (newmod);
353	return grub_errno;
354	}
355	newmod->cmdline_size = len;
356	total_modcmd += ALIGN_UP (len, 4);
357
358	for (i = 0; i < argc; i++)
359	{
360	p = grub_stpcpy (p, argv[i]);
361	*(p++) = ' ';
362	}
363
364	/* Remove the space after the last word. */
365	if (p != newmod->cmdline)
366	p--;
367	*p = '\0';
368
369	if (modules_last)
370	modules_last->next = newmod;
371	else
372	{
373	modules = newmod;
374	modules_last->next = NULL;
375	}
376	modules_last = newmod;
377
378	modcnt++;
379
380	return GRUB_ERR_NONE;
381	}
382
383	void
384	grub_multiboot_set_bootdev (void)
385	{
386	char *p;
387	grub_uint32_t biosdev, slice = ~0, part = ~0;
388	grub_device_t dev;
389
390	#ifdef GRUB_MACHINE_PCBIOS
391	biosdev = grub_get_root_biosnumber ();
392	#else
393	biosdev = 0xffffffff;
394	#endif
395
23432855 VS	396	if (biosdev == 0xffffffff)
	397	return;
	398
cd051479 VS	399	dev = grub_device_open (0);
	400	if (dev && dev->disk && dev->disk->partition)
	401	{
2ac227c7 VS	402	char *p0;
2ac227c7 VS	403	p = p0 = dev->disk->partition->partmap->get_name (dev->disk->partition);
cd051479 VS	404	if (p)
	405	{
	406	if ((p[0] >= '0') && (p[0] <= '9'))
	407	{
	408	slice = grub_strtoul (p, &p, 0) - 1;
	409
	410	if ((p) && (p[0] == ','))
	411	p++;
	412	}
	413
	414	if ((p[0] >= 'a') && (p[0] <= 'z'))
	415	part = p[0] - 'a';
	416	}
2ac227c7	417	grub_free (p0);
cd051479 VS	418	}
	419	if (dev)
	420	grub_device_close (dev);
	421
	422	bootdev = ((biosdev & 0xff) << 24) \| ((slice & 0xff) << 16)
	423	\| ((part & 0xff) << 8) \| 0xff;
	424	bootdev_set = 1;
	425	}