MAnipulate mbi in abstract way
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
f0d0c0b726
commit
cd0514794a
7 changed files with 453 additions and 256 deletions
25
ChangeLog.abstractmbi
Normal file
25
ChangeLog.abstractmbi
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
2010-01-10 Vladimir Serbinenko <phcoder@gmail.com>
|
||||
|
||||
* conf/i386-coreboot.rmk (multiboot_mod_SOURCES):
|
||||
Add loader/i386/multiboot_mbi.c.
|
||||
(multiboot2_mod_SOURCES): Likewise.
|
||||
* conf/i386-pc.rmk (multiboot_mod_SOURCES): Likewise.
|
||||
(multiboot2_mod_SOURCES): Likewise.
|
||||
* include/grub/multiboot.h (grub_multiboot_get_mbi_size): New proto.
|
||||
(grub_multiboot_make_mbi): Likewise.
|
||||
(grub_multiboot_free_mbi): Likewise.
|
||||
(grub_multiboot_init_mbi): Likewise.
|
||||
(grub_multiboot_add_module): Likewise.
|
||||
(grub_multiboot_set_bootdev): Likewise.
|
||||
* loader/i386/multiboot.c (mbi): Removed.
|
||||
(mbi_dest): Likewise.
|
||||
(alloc_mbi): New variable.
|
||||
(grub_multiboot_payload_size): Removed. All users updated.
|
||||
(grub_multiboot_pure_size): New variable.
|
||||
(grub_multiboot_boot): Use grub_multiboot_make_mbi.
|
||||
(grub_multiboot_unload): Use grub_multiboot_free_mbi.
|
||||
(grub_get_multiboot_mmap_len): Moved to loader/i386/multiboot_mbi.c.
|
||||
(grub_fill_multiboot_mmap): Likewise.
|
||||
(grub_multiboot_get_bootdev): Likewise.
|
||||
(grub_multiboot): Use multiboot_mbi functions.
|
||||
* loader/i386/multiboot_mbi.c: New file.
|
||||
|
|
@ -142,6 +142,7 @@ serial_mod_LDFLAGS = $(COMMON_LDFLAGS)
|
|||
|
||||
pkglib_MODULES += multiboot.mod
|
||||
multiboot_mod_SOURCES = loader/i386/multiboot.c \
|
||||
loader/i386/multiboot_mbi.c \
|
||||
loader/multiboot_loader.c
|
||||
multiboot_mod_CFLAGS = $(COMMON_CFLAGS)
|
||||
multiboot_mod_LDFLAGS = $(COMMON_LDFLAGS)
|
||||
|
|
@ -149,7 +150,8 @@ multiboot_mod_ASFLAGS = $(COMMON_ASFLAGS)
|
|||
|
||||
pkglib_MODULES += multiboot2.mod
|
||||
multiboot2_mod_SOURCES = loader/i386/multiboot.c \
|
||||
loader/multiboot_loader.c
|
||||
loader/multiboot_loader.c \
|
||||
loader/i386/multiboot_mbi.c
|
||||
multiboot2_mod_CFLAGS = $(COMMON_CFLAGS) -DGRUB_USE_MULTIBOOT2
|
||||
multiboot2_mod_LDFLAGS = $(COMMON_LDFLAGS)
|
||||
multiboot2_mod_ASFLAGS = $(COMMON_ASFLAGS)
|
||||
|
|
|
|||
|
|
@ -203,6 +203,7 @@ serial_mod_LDFLAGS = $(COMMON_LDFLAGS)
|
|||
|
||||
pkglib_MODULES += multiboot.mod
|
||||
multiboot_mod_SOURCES = loader/i386/multiboot.c \
|
||||
loader/i386/multiboot_mbi.c \
|
||||
loader/multiboot_loader.c
|
||||
multiboot_mod_CFLAGS = $(COMMON_CFLAGS)
|
||||
multiboot_mod_LDFLAGS = $(COMMON_LDFLAGS)
|
||||
|
|
@ -210,6 +211,7 @@ multiboot_mod_ASFLAGS = $(COMMON_ASFLAGS)
|
|||
|
||||
pkglib_MODULES += multiboot2.mod
|
||||
multiboot2_mod_SOURCES = loader/i386/multiboot.c \
|
||||
loader/i386/multiboot_mbi.c \
|
||||
loader/multiboot_loader.c
|
||||
multiboot2_mod_CFLAGS = $(COMMON_CFLAGS) -DGRUB_USE_MULTIBOOT2
|
||||
multiboot2_mod_LDFLAGS = $(COMMON_LDFLAGS)
|
||||
|
|
|
|||
|
|
@ -29,7 +29,20 @@
|
|||
#include <multiboot.h>
|
||||
#endif
|
||||
|
||||
#include <grub/types.h>
|
||||
#include <grub/err.h>
|
||||
|
||||
void grub_multiboot (int argc, char *argv[]);
|
||||
void grub_module (int argc, char *argv[]);
|
||||
|
||||
grub_size_t grub_multiboot_get_mbi_size (void);
|
||||
grub_err_t grub_multiboot_make_mbi (void *orig, grub_uint32_t dest,
|
||||
grub_off_t buf_off, grub_size_t bufsize);
|
||||
void grub_multiboot_free_mbi (void);
|
||||
grub_err_t grub_multiboot_init_mbi (int argc, char *argv[]);
|
||||
grub_err_t grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
|
||||
int argc, char *argv[]);
|
||||
void grub_multiboot_set_bootdev (void);
|
||||
|
||||
|
||||
#endif /* ! GRUB_MULTIBOOT_HEADER */
|
||||
|
|
|
|||
|
|
@ -45,31 +45,24 @@
|
|||
#include <grub/misc.h>
|
||||
#include <grub/gzio.h>
|
||||
#include <grub/env.h>
|
||||
#ifdef GRUB_MACHINE_PCBIOS
|
||||
#include <grub/machine/biosnum.h>
|
||||
#include <grub/disk.h>
|
||||
#include <grub/device.h>
|
||||
#include <grub/partition.h>
|
||||
#endif
|
||||
#include <grub/i386/relocator.h>
|
||||
|
||||
extern grub_dl_t my_mod;
|
||||
static struct multiboot_info *mbi, *mbi_dest;
|
||||
|
||||
static grub_size_t code_size;
|
||||
static grub_size_t code_size, alloc_mbi;
|
||||
|
||||
char *grub_multiboot_payload_orig;
|
||||
grub_addr_t grub_multiboot_payload_dest;
|
||||
grub_size_t grub_multiboot_payload_size;
|
||||
grub_size_t grub_multiboot_pure_size;
|
||||
grub_uint32_t grub_multiboot_payload_eip;
|
||||
|
||||
static grub_err_t
|
||||
grub_multiboot_boot (void)
|
||||
{
|
||||
grub_size_t mbi_size;
|
||||
grub_err_t err;
|
||||
struct grub_relocator32_state state =
|
||||
{
|
||||
.eax = MULTIBOOT_BOOTLOADER_MAGIC,
|
||||
.ebx = PTR_TO_UINT32 (mbi_dest),
|
||||
.ecx = 0,
|
||||
.edx = 0,
|
||||
.eip = grub_multiboot_payload_eip,
|
||||
|
|
@ -78,6 +71,24 @@ grub_multiboot_boot (void)
|
|||
.esp = 0x7ff00
|
||||
};
|
||||
|
||||
mbi_size = grub_multiboot_get_mbi_size ();
|
||||
if (alloc_mbi < mbi_size)
|
||||
{
|
||||
grub_multiboot_payload_orig
|
||||
= grub_relocator32_realloc (grub_multiboot_payload_orig,
|
||||
grub_multiboot_pure_size + mbi_size);
|
||||
if (!grub_multiboot_payload_orig)
|
||||
return grub_errno;
|
||||
alloc_mbi = mbi_size;
|
||||
}
|
||||
|
||||
state.ebx = grub_multiboot_payload_dest + grub_multiboot_pure_size;
|
||||
err = grub_multiboot_make_mbi (grub_multiboot_payload_orig,
|
||||
grub_multiboot_payload_dest,
|
||||
grub_multiboot_pure_size, mbi_size);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
grub_relocator32_boot (grub_multiboot_payload_orig,
|
||||
grub_multiboot_payload_dest,
|
||||
state);
|
||||
|
|
@ -89,69 +100,18 @@ grub_multiboot_boot (void)
|
|||
static grub_err_t
|
||||
grub_multiboot_unload (void)
|
||||
{
|
||||
if (mbi)
|
||||
{
|
||||
unsigned int i;
|
||||
for (i = 0; i < mbi->mods_count; i++)
|
||||
{
|
||||
grub_free ((void *)
|
||||
((struct multiboot_mod_list *) mbi->mods_addr)[i].mod_start);
|
||||
grub_free ((void *)
|
||||
((struct multiboot_mod_list *) mbi->mods_addr)[i].cmdline);
|
||||
}
|
||||
grub_free ((void *) mbi->mods_addr);
|
||||
}
|
||||
grub_multiboot_free_mbi ();
|
||||
|
||||
grub_relocator32_free (grub_multiboot_payload_orig);
|
||||
|
||||
mbi = NULL;
|
||||
alloc_mbi = 0;
|
||||
|
||||
grub_multiboot_payload_orig = NULL;
|
||||
grub_dl_unref (my_mod);
|
||||
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
/* Return the length of the Multiboot mmap that will be needed to allocate
|
||||
our platform's map. */
|
||||
static grub_uint32_t
|
||||
grub_get_multiboot_mmap_len (void)
|
||||
{
|
||||
grub_size_t count = 0;
|
||||
|
||||
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
|
||||
int NESTED_FUNC_ATTR hook (grub_uint64_t addr __attribute__ ((unused)),
|
||||
grub_uint64_t size __attribute__ ((unused)),
|
||||
grub_uint32_t type __attribute__ ((unused)))
|
||||
{
|
||||
count++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_mmap_iterate (hook);
|
||||
|
||||
return count * sizeof (struct multiboot_mmap_entry);
|
||||
}
|
||||
|
||||
/* 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;
|
||||
mmap_entry->type = type;
|
||||
mmap_entry->size = sizeof (struct multiboot_mmap_entry) - sizeof (mmap_entry->size);
|
||||
mmap_entry++;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_mmap_iterate (hook);
|
||||
}
|
||||
|
||||
#define MULTIBOOT_LOAD_ELF64
|
||||
#include "multiboot_elfxx.c"
|
||||
#undef MULTIBOOT_LOAD_ELF64
|
||||
|
|
@ -172,58 +132,13 @@ grub_multiboot_load_elf (grub_file_t file, void *buffer)
|
|||
return grub_error (GRUB_ERR_UNKNOWN_OS, "unknown ELF class");
|
||||
}
|
||||
|
||||
static int
|
||||
grub_multiboot_get_bootdev (grub_uint32_t *bootdev)
|
||||
{
|
||||
#ifdef GRUB_MACHINE_PCBIOS
|
||||
char *p;
|
||||
grub_uint32_t biosdev, slice = ~0, part = ~0;
|
||||
grub_device_t dev;
|
||||
|
||||
biosdev = grub_get_root_biosnumber ();
|
||||
|
||||
dev = grub_device_open (0);
|
||||
if (dev && dev->disk && dev->disk->partition)
|
||||
{
|
||||
|
||||
p = 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';
|
||||
}
|
||||
}
|
||||
if (dev)
|
||||
grub_device_close (dev);
|
||||
|
||||
*bootdev = ((biosdev & 0xff) << 24) | ((slice & 0xff) << 16)
|
||||
| ((part & 0xff) << 8) | 0xff;
|
||||
return (biosdev != ~0UL);
|
||||
#else
|
||||
*bootdev = 0xffffffff;
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
||||
grub_multiboot (int argc, char *argv[])
|
||||
{
|
||||
grub_file_t file = 0;
|
||||
char buffer[MULTIBOOT_SEARCH], *cmdline = 0, *p;
|
||||
char buffer[MULTIBOOT_SEARCH];
|
||||
struct multiboot_header *header;
|
||||
grub_ssize_t len, cmdline_length, boot_loader_name_length;
|
||||
grub_uint32_t mmap_length;
|
||||
int i;
|
||||
int cmdline_argc;
|
||||
char **cmdline_argv;
|
||||
grub_ssize_t len;
|
||||
|
||||
grub_loader_unset ();
|
||||
|
||||
|
|
@ -274,31 +189,8 @@ grub_multiboot (int argc, char *argv[])
|
|||
grub_relocator32_free (grub_multiboot_payload_orig);
|
||||
grub_multiboot_payload_orig = NULL;
|
||||
|
||||
mmap_length = grub_get_multiboot_mmap_len ();
|
||||
|
||||
/* Figure out cmdline length. */
|
||||
/* Skip filename. */
|
||||
cmdline_argc = argc - 1;
|
||||
cmdline_argv = argv + 1;
|
||||
|
||||
for (i = 0, cmdline_length = 0; i < cmdline_argc; i++)
|
||||
cmdline_length += grub_strlen (cmdline_argv[i]) + 1;
|
||||
|
||||
if (cmdline_length == 0)
|
||||
cmdline_length = 1;
|
||||
|
||||
boot_loader_name_length = sizeof(PACKAGE_STRING);
|
||||
|
||||
#define cmdline_addr(x) ((void *) ((x) + code_size))
|
||||
#define boot_loader_name_addr(x) \
|
||||
((void *) ((x) + code_size + cmdline_length))
|
||||
#define mbi_addr(x) ((void *) ((x) + code_size + cmdline_length + boot_loader_name_length))
|
||||
#define mmap_addr(x) ((void *) ((x) + code_size + cmdline_length + boot_loader_name_length + sizeof (struct multiboot_info)))
|
||||
|
||||
grub_multiboot_payload_size = cmdline_length
|
||||
/* boot_loader_name_length might need to grow for mbi,etc to be aligned (see below) */
|
||||
+ boot_loader_name_length + 3
|
||||
+ sizeof (struct multiboot_info) + mmap_length;
|
||||
grub_multiboot_init_mbi (argc - 1, argv + 1);
|
||||
|
||||
if (header->flags & MULTIBOOT_AOUT_KLUDGE)
|
||||
{
|
||||
|
|
@ -313,10 +205,12 @@ grub_multiboot (int argc, char *argv[])
|
|||
code_size = load_size;
|
||||
grub_multiboot_payload_dest = header->load_addr;
|
||||
|
||||
grub_multiboot_payload_size += code_size;
|
||||
grub_multiboot_pure_size += code_size;
|
||||
|
||||
/* Allocate a bit more to avoid relocations in most cases. */
|
||||
alloc_mbi = grub_multiboot_get_mbi_size () + 65536;
|
||||
grub_multiboot_payload_orig
|
||||
= grub_relocator32_alloc (grub_multiboot_payload_size);
|
||||
= grub_relocator32_alloc (grub_multiboot_pure_size + alloc_mbi);
|
||||
|
||||
if (! grub_multiboot_payload_orig)
|
||||
goto fail;
|
||||
|
|
@ -338,53 +232,35 @@ grub_multiboot (int argc, char *argv[])
|
|||
else if (grub_multiboot_load_elf (file, buffer) != GRUB_ERR_NONE)
|
||||
goto fail;
|
||||
|
||||
/* This provides alignment for the MBI, the memory map and the backward relocator. */
|
||||
boot_loader_name_length += (0x04 - ((unsigned long) mbi_addr (grub_multiboot_payload_dest) & 0x03));
|
||||
|
||||
mbi = mbi_addr (grub_multiboot_payload_orig);
|
||||
mbi_dest = mbi_addr (grub_multiboot_payload_dest);
|
||||
grub_memset (mbi, 0, sizeof (struct multiboot_info));
|
||||
mbi->mmap_length = mmap_length;
|
||||
|
||||
grub_fill_multiboot_mmap (mmap_addr (grub_multiboot_payload_orig));
|
||||
|
||||
/* FIXME: grub_uint32_t will break for addresses above 4 GiB, but is mandated
|
||||
by the spec. Is there something we can do about it? */
|
||||
mbi->mmap_addr = (grub_uint32_t) mmap_addr (grub_multiboot_payload_dest);
|
||||
mbi->flags |= MULTIBOOT_INFO_MEM_MAP;
|
||||
|
||||
/* 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;
|
||||
|
||||
cmdline = p = cmdline_addr (grub_multiboot_payload_orig);
|
||||
if (! cmdline)
|
||||
goto fail;
|
||||
|
||||
for (i = 0; i < cmdline_argc; i++)
|
||||
if (header->flags & MULTIBOOT_VIDEO_MODE)
|
||||
{
|
||||
p = grub_stpcpy (p, cmdline_argv[i]);
|
||||
*(p++) = ' ';
|
||||
switch (header->mode_type)
|
||||
{
|
||||
case 1:
|
||||
grub_env_set ("gfxpayload", "text");
|
||||
break;
|
||||
|
||||
case 0:
|
||||
{
|
||||
char buf[sizeof ("XXXXXXXXXXxXXXXXXXXXXxXXXXXXXXXX,XXXXXXXXXXxXXXXXXXXXX,auto")];
|
||||
if (header->depth && header->width && header->height)
|
||||
grub_sprintf (buf, "%dx%dx%d,%dx%d,auto", header->width,
|
||||
header->height, header->depth, header->width,
|
||||
header->height);
|
||||
else if (header->width && header->height)
|
||||
grub_sprintf (buf, "%dx%d,auto", header->width, header->height);
|
||||
else
|
||||
grub_sprintf (buf, "auto");
|
||||
|
||||
grub_env_set ("gfxpayload", buf);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Remove the space after the last word. */
|
||||
if (p != cmdline)
|
||||
p--;
|
||||
*p = 0;
|
||||
grub_multiboot_set_bootdev ();
|
||||
|
||||
mbi->flags |= MULTIBOOT_INFO_CMDLINE;
|
||||
mbi->cmdline = (grub_uint32_t) cmdline_addr (grub_multiboot_payload_dest);
|
||||
|
||||
|
||||
grub_strcpy (boot_loader_name_addr (grub_multiboot_payload_orig), PACKAGE_STRING);
|
||||
mbi->flags |= MULTIBOOT_INFO_BOOT_LOADER_NAME;
|
||||
mbi->boot_loader_name = (grub_uint32_t) boot_loader_name_addr (grub_multiboot_payload_dest);
|
||||
|
||||
if (grub_multiboot_get_bootdev (&mbi->boot_device))
|
||||
mbi->flags |= MULTIBOOT_INFO_BOOTDEV;
|
||||
|
||||
grub_loader_set (grub_multiboot_boot, grub_multiboot_unload, 1);
|
||||
grub_loader_set (grub_multiboot_boot, grub_multiboot_unload, 0);
|
||||
|
||||
fail:
|
||||
if (file)
|
||||
|
|
@ -392,22 +268,18 @@ grub_multiboot (int argc, char *argv[])
|
|||
|
||||
if (grub_errno != GRUB_ERR_NONE)
|
||||
{
|
||||
grub_free (cmdline);
|
||||
grub_free (mbi);
|
||||
grub_relocator32_free (grub_multiboot_payload_orig);
|
||||
grub_dl_unref (my_mod);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
grub_module (int argc, char *argv[])
|
||||
{
|
||||
grub_file_t file = 0;
|
||||
grub_ssize_t size, len = 0;
|
||||
char *module = 0, *cmdline = 0, *p;
|
||||
int i;
|
||||
int cmdline_argc;
|
||||
char **cmdline_argv;
|
||||
grub_ssize_t size;
|
||||
char *module = 0;
|
||||
grub_err_t err;
|
||||
|
||||
if (argc == 0)
|
||||
{
|
||||
|
|
@ -415,7 +287,7 @@ grub_module (int argc, char *argv[])
|
|||
goto fail;
|
||||
}
|
||||
|
||||
if (!mbi)
|
||||
if (!grub_multiboot_payload_orig)
|
||||
{
|
||||
grub_error (GRUB_ERR_BAD_ARGUMENT,
|
||||
"you need to load the multiboot kernel first");
|
||||
|
|
@ -431,73 +303,19 @@ grub_module (int argc, char *argv[])
|
|||
if (! module)
|
||||
goto fail;
|
||||
|
||||
err = grub_multiboot_add_module ((grub_addr_t) module, size,
|
||||
argc - 1, argv + 1);
|
||||
if (err)
|
||||
goto fail;
|
||||
|
||||
if (grub_file_read (file, module, size) != size)
|
||||
{
|
||||
grub_error (GRUB_ERR_FILE_READ_ERROR, "couldn't read file");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Skip module name. */
|
||||
cmdline_argc = argc - 1;
|
||||
cmdline_argv = argv + 1;
|
||||
|
||||
for (i = 0; i < cmdline_argc; i++)
|
||||
len += grub_strlen (cmdline_argv[i]) + 1;
|
||||
|
||||
if (len == 0)
|
||||
len = 1;
|
||||
|
||||
cmdline = p = grub_malloc (len);
|
||||
if (! cmdline)
|
||||
goto fail;
|
||||
|
||||
for (i = 0; i < cmdline_argc; i++)
|
||||
{
|
||||
p = grub_stpcpy (p, cmdline_argv[i]);
|
||||
*(p++) = ' ';
|
||||
}
|
||||
|
||||
/* Remove the space after the last word. */
|
||||
if (p != cmdline)
|
||||
p--;
|
||||
*p = '\0';
|
||||
|
||||
if (mbi->flags & MULTIBOOT_INFO_MODS)
|
||||
{
|
||||
struct multiboot_mod_list *modlist = (struct multiboot_mod_list *) mbi->mods_addr;
|
||||
|
||||
modlist = grub_realloc (modlist, (mbi->mods_count + 1)
|
||||
* sizeof (struct multiboot_mod_list));
|
||||
if (! modlist)
|
||||
goto fail;
|
||||
mbi->mods_addr = (grub_uint32_t) modlist;
|
||||
modlist += mbi->mods_count;
|
||||
modlist->mod_start = (grub_uint32_t) module;
|
||||
modlist->mod_end = (grub_uint32_t) module + size;
|
||||
modlist->cmdline = (grub_uint32_t) cmdline;
|
||||
modlist->pad = 0;
|
||||
mbi->mods_count++;
|
||||
}
|
||||
else
|
||||
{
|
||||
struct multiboot_mod_list *modlist = grub_zalloc (sizeof (struct multiboot_mod_list));
|
||||
if (! modlist)
|
||||
goto fail;
|
||||
modlist->mod_start = (grub_uint32_t) module;
|
||||
modlist->mod_end = (grub_uint32_t) module + size;
|
||||
modlist->cmdline = (grub_uint32_t) cmdline;
|
||||
mbi->mods_count = 1;
|
||||
mbi->mods_addr = (grub_uint32_t) modlist;
|
||||
mbi->flags |= MULTIBOOT_INFO_MODS;
|
||||
}
|
||||
|
||||
fail:
|
||||
if (file)
|
||||
grub_file_close (file);
|
||||
|
||||
if (grub_errno != GRUB_ERR_NONE)
|
||||
{
|
||||
grub_free (module);
|
||||
grub_free (cmdline);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -100,10 +100,11 @@ CONCAT(grub_multiboot_load_elf, XX) (grub_file_t file, void *buffer)
|
|||
code_size = (phdr(highest_segment)->p_paddr + phdr(highest_segment)->p_memsz) - phdr(lowest_segment)->p_paddr;
|
||||
grub_multiboot_payload_dest = phdr(lowest_segment)->p_paddr;
|
||||
|
||||
grub_multiboot_payload_size += code_size;
|
||||
grub_multiboot_pure_size += code_size;
|
||||
|
||||
alloc_mbi = grub_multiboot_get_mbi_size ();
|
||||
grub_multiboot_payload_orig
|
||||
= grub_relocator32_alloc (grub_multiboot_payload_size);
|
||||
= grub_relocator32_alloc (grub_multiboot_pure_size + alloc_mbi);
|
||||
|
||||
if (!grub_multiboot_payload_orig)
|
||||
return grub_errno;
|
||||
|
|
|
|||
336
loader/i386/multiboot_mbi.c
Normal file
336
loader/i386/multiboot_mbi.c
Normal file
|
|
@ -0,0 +1,336 @@
|
|||
/*
|
||||
* 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>
|
||||
|
||||
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;
|
||||
|
||||
/* Return the length of the Multiboot mmap that will be needed to allocate
|
||||
our platform's map. */
|
||||
static grub_uint32_t
|
||||
grub_get_multiboot_mmap_len (void)
|
||||
{
|
||||
grub_size_t count = 0;
|
||||
|
||||
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
|
||||
int NESTED_FUNC_ATTR hook (grub_uint64_t addr __attribute__ ((unused)),
|
||||
grub_uint64_t size __attribute__ ((unused)),
|
||||
grub_uint32_t type __attribute__ ((unused)))
|
||||
{
|
||||
count++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_mmap_iterate (hook);
|
||||
|
||||
return count * sizeof (struct multiboot_mmap_entry);
|
||||
}
|
||||
|
||||
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_len ();
|
||||
}
|
||||
|
||||
/* 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;
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
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;
|
||||
|
||||
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_len ();
|
||||
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;
|
||||
}
|
||||
|
||||
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
|
||||
|
||||
dev = grub_device_open (0);
|
||||
if (dev && dev->disk && dev->disk->partition)
|
||||
{
|
||||
|
||||
p = 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';
|
||||
}
|
||||
}
|
||||
if (dev)
|
||||
grub_device_close (dev);
|
||||
|
||||
bootdev = ((biosdev & 0xff) << 24) | ((slice & 0xff) << 16)
|
||||
| ((part & 0xff) << 8) | 0xff;
|
||||
bootdev_set = 1;
|
||||
}
|
||||
Loading…
Reference in a new issue