vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Merge remote-tracking branch 'upstream/master'

Browse source
This commit is contained in:
David Michael 2017-01-23 13:27:34 -08:00
commit e576eb0cbc
183 changed files with 5507 additions and 2653 deletions
Download patch file Download diff file Expand all files Collapse all files

257
grub-core/loader/multiboot_mbi2.c
View file

@ -69,6 +69,7 @@ static grub_size_t elf_sec_num, elf_sec_entsize;
static unsigned elf_sec_shstrndx;
static void *elf_sections;
static int keep_bs = 0;
static grub_uint32_t load_base_addr;
void
grub_multiboot_add_elfsyms (grub_size_t num, grub_size_t entsize,
@ -102,39 +103,43 @@ find_header (grub_properly_aligned_t *buffer, grub_ssize_t len)
grub_err_t
grub_multiboot_load (grub_file_t file, const char *filename)
{
grub_properly_aligned_t *buffer;
grub_ssize_t len;
struct multiboot_header *header;
grub_err_t err;
struct multiboot_header_tag *tag;
struct multiboot_header_tag_address *addr_tag = NULL;
int entry_specified = 0;
grub_addr_t entry = 0;
struct multiboot_header_tag_relocatable *rel_tag;
int entry_specified = 0, efi_entry_specified = 0;
grub_addr_t entry = 0, efi_entry = 0;
grub_uint32_t console_required = 0;
struct multiboot_header_tag_framebuffer *fbtag = NULL;
int accepted_consoles = GRUB_MULTIBOOT_CONSOLE_EGA_TEXT;
mbi_load_data_t mld;
buffer = grub_malloc (MULTIBOOT_SEARCH);
if (!buffer)
mld.mbi_ver = 2;
mld.relocatable = 0;
mld.buffer = grub_malloc (MULTIBOOT_SEARCH);
if (!mld.buffer)
return grub_errno;
len = grub_file_read (file, buffer, MULTIBOOT_SEARCH);
len = grub_file_read (file, mld.buffer, MULTIBOOT_SEARCH);
if (len < 32)
{
grub_free (buffer);
grub_free (mld.buffer);
return grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), filename);
}
COMPILE_TIME_ASSERT (MULTIBOOT_HEADER_ALIGN % 4 == 0);
grub_tpm_measure ((unsigned char *)buffer, len, GRUB_BINARY_PCR, "grub_multiboot", filename);
grub_tpm_measure ((unsigned char *)mld.buffer, len, GRUB_BINARY_PCR, "grub_multiboot", filename);
grub_print_error();
header = find_header (buffer, len);
header = find_header (mld.buffer, len);
if (header == 0)
{
grub_free (buffer);
grub_free (mld.buffer);
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no multiboot header found");
}
@ -176,10 +181,13 @@ grub_multiboot_load (grub_file_t file, const char *filename)
case MULTIBOOT_TAG_TYPE_NETWORK:
case MULTIBOOT_TAG_TYPE_EFI_MMAP:
case MULTIBOOT_TAG_TYPE_EFI_BS:
case MULTIBOOT_TAG_TYPE_EFI32_IH:
case MULTIBOOT_TAG_TYPE_EFI64_IH:
case MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR:
break;
default:
grub_free (buffer);
grub_free (mld.buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"unsupported information tag: 0x%x",
request_tag->requests[i]);
@ -196,6 +204,13 @@ grub_multiboot_load (grub_file_t file, const char *filename)
entry = ((struct multiboot_header_tag_entry_address *) tag)->entry_addr;
break;
case MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64:
#if defined (GRUB_MACHINE_EFI) && defined (__x86_64__)
efi_entry_specified = 1;
efi_entry = ((struct multiboot_header_tag_entry_address *) tag)->entry_addr;
#endif
break;
case MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS:
if (!(((struct multiboot_header_tag_console_flags *) tag)->console_flags
& MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED))
@ -210,27 +225,50 @@ grub_multiboot_load (grub_file_t file, const char *filename)
accepted_consoles |= GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER;
break;
case MULTIBOOT_HEADER_TAG_RELOCATABLE:
mld.relocatable = 1;
rel_tag = (struct multiboot_header_tag_relocatable *) tag;
mld.min_addr = rel_tag->min_addr;
mld.max_addr = rel_tag->max_addr;
mld.align = rel_tag->align;
switch (rel_tag->preference)
{
case MULTIBOOT_LOAD_PREFERENCE_LOW:
mld.preference = GRUB_RELOCATOR_PREFERENCE_LOW;
break;
case MULTIBOOT_LOAD_PREFERENCE_HIGH:
mld.preference = GRUB_RELOCATOR_PREFERENCE_HIGH;
break;
default:
mld.preference = GRUB_RELOCATOR_PREFERENCE_NONE;
}
break;
/* GRUB always page-aligns modules. */
case MULTIBOOT_HEADER_TAG_MODULE_ALIGN:
break;
case MULTIBOOT_HEADER_TAG_EFI_BS:
#ifdef GRUB_MACHINE_EFI
keep_bs = 1;
#endif
break;
default:
if (! (tag->flags & MULTIBOOT_HEADER_TAG_OPTIONAL))
{
grub_free (buffer);
grub_free (mld.buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"unsupported tag: 0x%x", tag->type);
}
break;
}
if (addr_tag && !entry_specified)
if (addr_tag && !entry_specified && !(keep_bs && efi_entry_specified))
{
grub_free (buffer);
grub_free (mld.buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"load address tag without entry address tag");
}
@ -239,8 +277,8 @@ grub_multiboot_load (grub_file_t file, const char *filename)
{
grub_uint64_t load_addr = (addr_tag->load_addr + 1)
? addr_tag->load_addr : (addr_tag->header_addr
- ((char *) header - (char *) buffer));
int offset = ((char *) header - (char *) buffer -
- ((char *) header - (char *) mld.buffer));
int offset = ((char *) header - (char *) mld.buffer -
(addr_tag->header_addr - load_addr));
int load_size = ((addr_tag->load_end_addr == 0) ? file->size - offset :
addr_tag->load_end_addr - addr_tag->load_addr);
@ -253,27 +291,50 @@ grub_multiboot_load (grub_file_t file, const char *filename)
else
code_size = load_size;
err = grub_relocator_alloc_chunk_addr (grub_multiboot_relocator,
&ch, load_addr,
code_size);
if (mld.relocatable)
{
if (code_size > mld.max_addr || mld.min_addr > mld.max_addr - code_size)
{
grub_free (mld.buffer);
return grub_error (GRUB_ERR_BAD_OS, "invalid min/max address and/or load size");
}
err = grub_relocator_alloc_chunk_align (grub_multiboot_relocator, &ch,
mld.min_addr, mld.max_addr - code_size,
code_size, mld.align ? mld.align : 1,
mld.preference, keep_bs);
}
else
err = grub_relocator_alloc_chunk_addr (grub_multiboot_relocator,
&ch, load_addr, code_size);
if (err)
{
grub_dprintf ("multiboot_loader", "Error loading aout kludge\n");
grub_free (buffer);
grub_free (mld.buffer);
return err;
}
mld.link_base_addr = load_addr;
mld.load_base_addr = get_physical_target_address (ch);
source = get_virtual_current_address (ch);
grub_dprintf ("multiboot_loader", "link_base_addr=0x%x, load_base_addr=0x%x, "
"load_size=0x%lx, relocatable=%d\n", mld.link_base_addr,
mld.load_base_addr, (long) code_size, mld.relocatable);
if (mld.relocatable)
grub_dprintf ("multiboot_loader", "align=0x%lx, preference=0x%x, avoid_efi_boot_services=%d\n",
(long) mld.align, mld.preference, keep_bs);
if ((grub_file_seek (file, offset)) == (grub_off_t) -1)
{
grub_free (buffer);
grub_free (mld.buffer);
return grub_errno;
}
grub_file_read (file, source, load_size);
if (grub_errno)
{
grub_free (buffer);
grub_free (mld.buffer);
return grub_errno;
}
@ -283,17 +344,41 @@ grub_multiboot_load (grub_file_t file, const char *filename)
}
else
{
err = grub_multiboot_load_elf (file, filename, buffer);
mld.file = file;
mld.filename = filename;
mld.avoid_efi_boot_services = keep_bs;
err = grub_multiboot_load_elf (&mld);
if (err)
{
grub_free (buffer);
grub_free (mld.buffer);
return err;
}
}
if (entry_specified)
load_base_addr = mld.load_base_addr;
if (keep_bs && efi_entry_specified)
grub_multiboot_payload_eip = efi_entry;
else if (entry_specified)
grub_multiboot_payload_eip = entry;
if (mld.relocatable)
{
/*
* Both branches are mathematically equivalent. However, it looks
* that real life (C?) is more complicated. I am trying to avoid
* wrap around here if mld.load_base_addr < mld.link_base_addr.
* If you look at C operator precedence then everything should work.
* However, I am not 100% sure that a given compiler will not
* optimize/break this stuff. So, maybe we should use signed
* 64-bit int here.
*/
if (mld.load_base_addr >= mld.link_base_addr)
grub_multiboot_payload_eip += mld.load_base_addr - mld.link_base_addr;
else
grub_multiboot_payload_eip -= mld.link_base_addr - mld.load_base_addr;
}
if (fbtag)
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
accepted_consoles,
@ -381,7 +466,7 @@ static grub_size_t
grub_multiboot_get_mbi_size (void)
{
#ifdef GRUB_MACHINE_EFI
if (!efi_mmap_size)
if (!keep_bs && !efi_mmap_size)
find_efi_mmap_size ();
#endif
return 2 * sizeof (grub_uint32_t) + sizeof (struct multiboot_tag)
@ -400,13 +485,16 @@ grub_multiboot_get_mbi_size (void)
+ grub_get_multiboot_mmap_count ()
* sizeof (struct multiboot_mmap_entry)), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_framebuffer), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_efi32), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_efi64), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_old_acpi)
+ sizeof (struct grub_acpi_rsdp_v10), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_load_base_addr), MULTIBOOT_TAG_ALIGN)
+ acpiv2_size ()
+ net_size ()
#ifdef GRUB_MACHINE_EFI
+ ALIGN_UP (sizeof (struct multiboot_tag_efi32), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_efi32_ih), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_efi64), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_efi64_ih), MULTIBOOT_TAG_ALIGN)
+ ALIGN_UP (sizeof (struct multiboot_tag_efi_mmap)
+ efi_mmap_size, MULTIBOOT_TAG_ALIGN)
#endif
@ -424,6 +512,7 @@ grub_fill_multiboot_mmap_iter (grub_uint64_t addr, grub_uint64_t size,
(*mmap_entry)->addr = addr;
(*mmap_entry)->len = size;
(*mmap_entry)->type = type;
(*mmap_entry)->zero = 0;
(*mmap_entry)++;
return 0;
@ -681,6 +770,15 @@ grub_multiboot_make_mbi (grub_uint32_t *target)
% sizeof (grub_properly_aligned_t) == 0);
ptrorig += (2 * sizeof (grub_uint32_t)) / sizeof (grub_properly_aligned_t);
{
struct multiboot_tag_load_base_addr *tag = (struct multiboot_tag_load_base_addr *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR;
tag->size = sizeof (struct multiboot_tag_load_base_addr);
tag->load_base_addr = load_base_addr;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
{
struct multiboot_tag_string *tag = (struct multiboot_tag_string *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_CMDLINE;
@ -743,12 +841,13 @@ grub_multiboot_make_mbi (grub_uint32_t *target)
}
}
{
struct multiboot_tag_mmap *tag = (struct multiboot_tag_mmap *) ptrorig;
grub_fill_multiboot_mmap (tag);
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
if (!keep_bs)
{
struct multiboot_tag_mmap *tag = (struct multiboot_tag_mmap *) ptrorig;
grub_fill_multiboot_mmap (tag);
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
{
struct multiboot_tag_elf_sections *tag
@ -764,18 +863,19 @@ grub_multiboot_make_mbi (grub_uint32_t *target)
/ sizeof (grub_properly_aligned_t);
}
{
struct multiboot_tag_basic_meminfo *tag
= (struct multiboot_tag_basic_meminfo *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_BASIC_MEMINFO;
tag->size = sizeof (struct multiboot_tag_basic_meminfo);
if (!keep_bs)
{
struct multiboot_tag_basic_meminfo *tag
= (struct multiboot_tag_basic_meminfo *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_BASIC_MEMINFO;
tag->size = sizeof (struct multiboot_tag_basic_meminfo);
/* Convert from bytes to kilobytes. */
tag->mem_lower = grub_mmap_get_lower () / 1024;
tag->mem_upper = grub_mmap_get_upper () / 1024;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
/* Convert from bytes to kilobytes. */
tag->mem_lower = grub_mmap_get_lower () / 1024;
tag->mem_upper = grub_mmap_get_upper () / 1024;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
{
struct grub_net_network_level_interface *net;
@ -874,36 +974,57 @@ grub_multiboot_make_mbi (grub_uint32_t *target)
grub_efi_uintn_t efi_desc_size;
grub_efi_uint32_t efi_desc_version;
tag->type = MULTIBOOT_TAG_TYPE_EFI_MMAP;
tag->size = sizeof (*tag) + efi_mmap_size;
if (!keep_bs)
err = grub_efi_finish_boot_services (&efi_mmap_size, tag->efi_mmap, NULL,
&efi_desc_size, &efi_desc_version);
else
{
if (grub_efi_get_memory_map (&efi_mmap_size, (void *) tag->efi_mmap,
NULL,
&efi_desc_size, &efi_desc_version) <= 0)
err = grub_error (GRUB_ERR_IO, "couldn't retrieve memory map");
}
if (err)
return err;
tag->descr_size = efi_desc_size;
tag->descr_vers = efi_desc_version;
tag->size = sizeof (*tag) + efi_mmap_size;
tag->type = MULTIBOOT_TAG_TYPE_EFI_MMAP;
tag->size = sizeof (*tag) + efi_mmap_size;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
err = grub_efi_finish_boot_services (&efi_mmap_size, tag->efi_mmap, NULL,
&efi_desc_size, &efi_desc_version);
if (err)
return err;
tag->descr_size = efi_desc_size;
tag->descr_vers = efi_desc_version;
tag->size = sizeof (*tag) + efi_mmap_size;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
}
if (keep_bs)
{
struct multiboot_tag *tag = (struct multiboot_tag *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_EFI_BS;
tag->size = sizeof (struct multiboot_tag);
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
{
struct multiboot_tag *tag = (struct multiboot_tag *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_EFI_BS;
tag->size = sizeof (struct multiboot_tag);
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
#ifdef __i386__
{
struct multiboot_tag_efi32_ih *tag = (struct multiboot_tag_efi32_ih *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_EFI32_IH;
tag->size = sizeof (struct multiboot_tag_efi32_ih);
tag->pointer = (grub_addr_t) grub_efi_image_handle;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
#endif
#ifdef __x86_64__
{
struct multiboot_tag_efi64_ih *tag = (struct multiboot_tag_efi64_ih *) ptrorig;
tag->type = MULTIBOOT_TAG_TYPE_EFI64_IH;
tag->size = sizeof (struct multiboot_tag_efi64_ih);
tag->pointer = (grub_addr_t) grub_efi_image_handle;
ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)
/ sizeof (grub_properly_aligned_t);
}
#endif
}
#endif