static grub_err_t
grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t file = 0;
struct linux_kernel_header lh;
grub_ssize_t len, start, filelen;
void *kernel = NULL;
grub_dl_ref (my_mod);
if (argc == 0)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
goto fail;
}
file = grub_file_open (argv[0]);
if (! file)
goto fail;
filelen = grub_file_size (file);
kernel = grub_malloc(filelen);
if (!kernel)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("cannot allocate kernel buffer"));
goto fail;
}
if (grub_file_read (file, kernel, filelen) != filelen)
{
grub_error (GRUB_ERR_FILE_READ_ERROR, N_("Can't read kernel %s"), argv[0]);
goto fail;
}
grub_tpm_measure (kernel, filelen, GRUB_KERNEL_PCR);
if (! grub_linuxefi_secure_validate (kernel, filelen))
{
grub_error (GRUB_ERR_INVALID_COMMAND, N_("%s has invalid signature"), argv[0]);
grub_free (kernel);
goto fail;
}
params = grub_efi_allocate_pages_max (0x3fffffff, BYTES_TO_PAGES(16384));
if (! params)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, "cannot allocate kernel parameters");
goto fail;
}
grub_memset (params, 0, 16384);
grub_memcpy (&lh, kernel, sizeof (lh));
if (lh.boot_flag != grub_cpu_to_le16 (0xaa55))
{
grub_error (GRUB_ERR_BAD_OS, N_("invalid magic number"));
goto fail;
}
if (lh.setup_sects > GRUB_LINUX_MAX_SETUP_SECTS)
{
grub_error (GRUB_ERR_BAD_OS, N_("too many setup sectors"));
goto fail;
}
if (lh.version < grub_cpu_to_le16 (0x020b))
{
grub_error (GRUB_ERR_BAD_OS, N_("kernel too old"));
goto fail;
}
if (!lh.handover_offset)
{
grub_error (GRUB_ERR_BAD_OS, N_("kernel doesn't support EFI handover"));
goto fail;
}
linux_cmdline = grub_efi_allocate_pages_max(0x3fffffff,
BYTES_TO_PAGES(lh.cmdline_size + 1));
if (!linux_cmdline)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("can't allocate cmdline"));
goto fail;
}
grub_memcpy (linux_cmdline, LINUX_IMAGE, sizeof (LINUX_IMAGE));
grub_create_loader_cmdline (argc, argv,
linux_cmdline + sizeof (LINUX_IMAGE) - 1,
lh.cmdline_size - (sizeof (LINUX_IMAGE) - 1));
grub_pass_verity_hash(&lh, linux_cmdline);
lh.cmd_line_ptr = (grub_uint32_t)(grub_uint64_t)linux_cmdline;
handover_offset = lh.handover_offset;
start = (lh.setup_sects + 1) * 512;
len = grub_file_size(file) - start;
kernel_mem = grub_efi_allocate_pages(lh.pref_address,
BYTES_TO_PAGES(lh.init_size));
if (!kernel_mem)
kernel_mem = grub_efi_allocate_pages_max(0x3fffffff,
BYTES_TO_PAGES(lh.init_size));
if (!kernel_mem)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("can't allocate kernel"));
goto fail;
}
grub_memcpy (kernel_mem, (char *)kernel + start, len);
grub_loader_set (grub_linuxefi_boot, grub_linuxefi_unload, 0);
loaded=1;
lh.code32_start = (grub_uint32_t)(grub_uint64_t) kernel_mem;
grub_memcpy (params, &lh, 2 * 512);
params->type_of_loader = 0x21;
fail:
if (file)
grub_file_close (file);
if (kernel)
grub_free (kernel);
if (grub_errno != GRUB_ERR_NONE)
{
grub_dl_unref (my_mod);
loaded = 0;
}
if (linux_cmdline && !loaded)
grub_efi_free_pages((grub_efi_physical_address_t)linux_cmdline, BYTES_TO_PAGES(lh.cmdline_size + 1));
if (kernel_mem && !loaded)
grub_efi_free_pages((grub_efi_physical_address_t)kernel_mem, BYTES_TO_PAGES(kernel_size));
if (params && !loaded)
grub_efi_free_pages((grub_efi_physical_address_t)params, BYTES_TO_PAGES(16384));
return grub_errno;
}
static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t *files = 0;
int i, nfiles = 0;
grub_size_t size = 0;
grub_uint8_t *ptr;
if (argc == 0)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
goto fail;
}
if (!loaded)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, N_("you need to load the kernel first"));
goto fail;
}
files = grub_zalloc (argc * sizeof (files[0]));
if (!files)
goto fail;
for (i = 0; i < argc; i++)
{
grub_file_filter_disable_compression ();
files[i] = grub_file_open (argv[i]);
if (! files[i])
goto fail;
nfiles++;
size += ALIGN_UP (grub_file_size (files[i]), 4);
}
initrd_mem = grub_efi_allocate_pages_max (0x3fffffff, BYTES_TO_PAGES(size));
if (!initrd_mem)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("can't allocate initrd"));
goto fail;
}
params->ramdisk_size = size;
params->ramdisk_image = (grub_uint32_t)(grub_uint64_t) initrd_mem;
ptr = initrd_mem;
for (i = 0; i < nfiles; i++)
{
grub_ssize_t cursize = grub_file_size (files[i]);
if (grub_file_read (files[i], ptr, cursize) != cursize)
{
if (!grub_errno)
grub_error (GRUB_ERR_FILE_READ_ERROR, N_("premature end of file %s"),
argv[i]);
goto fail;
}
grub_tpm_measure (ptr, cursize, GRUB_INITRD_PCR);
ptr += cursize;
grub_memset (ptr, 0, ALIGN_UP_OVERHEAD (cursize, 4));
ptr += ALIGN_UP_OVERHEAD (cursize, 4);
}
params->ramdisk_size = size;
fail:
for (i = 0; i < nfiles; i++)
grub_file_close (files[i]);
grub_free (files);
if (initrd_mem && grub_errno)
grub_efi_free_pages((grub_efi_physical_address_t)initrd_mem, BYTES_TO_PAGES(size));
return grub_errno;
}
static grub_err_t
grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t file = 0;
grub_ssize_t size;
void *module = NULL;
grub_addr_t target;
grub_err_t err;
int nounzip = 0;
grub_uint64_t lowest_addr = 0;
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
if (grub_strcmp (argv[0], "--nounzip") == 0)
{
argv++;
argc--;
nounzip = 1;
}
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
if (!grub_multiboot_relocator)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
N_("you need to load the kernel first"));
if (nounzip)
grub_file_filter_disable_compression ();
file = grub_file_open (argv[0]);
if (! file)
return grub_errno;
#ifndef GRUB_USE_MULTIBOOT2
lowest_addr = 0x100000;
if (grub_multiboot_quirks & GRUB_MULTIBOOT_QUIRK_MODULES_AFTER_KERNEL)
lowest_addr = ALIGN_UP (highest_load + 1048576, 4096);
#endif
size = grub_file_size (file);
if (size)
{
grub_relocator_chunk_t ch;
err = grub_relocator_alloc_chunk_align (grub_multiboot_relocator, &ch,
lowest_addr, (0xffffffff - size) + 1,
size, MULTIBOOT_MOD_ALIGN,
GRUB_RELOCATOR_PREFERENCE_NONE, 1);
if (err)
{
grub_file_close (file);
return err;
}
module = get_virtual_current_address (ch);
target = get_physical_target_address (ch);
}
else
{
module = 0;
target = 0;
}
err = grub_multiboot_add_module (target, size, argc - 1, argv + 1);
if (err)
{
grub_file_close (file);
return err;
}
if (size && grub_file_read (file, module, size) != size)
{
grub_file_close (file);
if (!grub_errno)
grub_error (GRUB_ERR_FILE_READ_ERROR, N_("premature end of file %s"),
argv[0]);
return grub_errno;
}
grub_file_close (file);
grub_tpm_measure (module, size, GRUB_BINARY_PCR, "grub_multiboot", argv[0]);
return GRUB_ERR_NONE;
}
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;
grub_uint32_t console_required = 0;
struct multiboot_header_tag_framebuffer *fbtag = NULL;
int accepted_consoles = GRUB_MULTIBOOT_CONSOLE_EGA_TEXT;
buffer = grub_malloc (MULTIBOOT_SEARCH);
if (!buffer)
return grub_errno;
len = grub_file_read (file, buffer, MULTIBOOT_SEARCH);
if (len < 32)
{
grub_free (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);
header = find_header (buffer, len);
if (header == 0)
{
grub_free (buffer);
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no multiboot header found");
}
COMPILE_TIME_ASSERT (MULTIBOOT_TAG_ALIGN % 4 == 0);
keep_bs = 0;
for (tag = (struct multiboot_header_tag *) (header + 1);
tag->type != MULTIBOOT_TAG_TYPE_END;
tag = (struct multiboot_header_tag *) ((grub_uint32_t *) tag + ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN) / 4))
switch (tag->type)
{
case MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST:
{
unsigned i;
struct multiboot_header_tag_information_request *request_tag
= (struct multiboot_header_tag_information_request *) tag;
if (request_tag->flags & MULTIBOOT_HEADER_TAG_OPTIONAL)
break;
for (i = 0; i < (request_tag->size - sizeof (*request_tag))
/ sizeof (request_tag->requests[0]); i++)
switch (request_tag->requests[i])
{
case MULTIBOOT_TAG_TYPE_END:
case MULTIBOOT_TAG_TYPE_CMDLINE:
case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
case MULTIBOOT_TAG_TYPE_MODULE:
case MULTIBOOT_TAG_TYPE_BASIC_MEMINFO:
case MULTIBOOT_TAG_TYPE_BOOTDEV:
case MULTIBOOT_TAG_TYPE_MMAP:
case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
case MULTIBOOT_TAG_TYPE_VBE:
case MULTIBOOT_TAG_TYPE_ELF_SECTIONS:
case MULTIBOOT_TAG_TYPE_APM:
case MULTIBOOT_TAG_TYPE_EFI32:
case MULTIBOOT_TAG_TYPE_EFI64:
case MULTIBOOT_TAG_TYPE_ACPI_OLD:
case MULTIBOOT_TAG_TYPE_ACPI_NEW:
case MULTIBOOT_TAG_TYPE_NETWORK:
case MULTIBOOT_TAG_TYPE_EFI_MMAP:
case MULTIBOOT_TAG_TYPE_EFI_BS:
break;
default:
grub_free (buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"unsupported information tag: 0x%x",
request_tag->requests[i]);
}
break;
}
case MULTIBOOT_HEADER_TAG_ADDRESS:
addr_tag = (struct multiboot_header_tag_address *) tag;
break;
case MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS:
entry_specified = 1;
entry = ((struct multiboot_header_tag_entry_address *) tag)->entry_addr;
break;
case MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS:
if (!(((struct multiboot_header_tag_console_flags *) tag)->console_flags
& MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED))
accepted_consoles &= ~GRUB_MULTIBOOT_CONSOLE_EGA_TEXT;
if (((struct multiboot_header_tag_console_flags *) tag)->console_flags
& MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED)
console_required = 1;
break;
case MULTIBOOT_HEADER_TAG_FRAMEBUFFER:
fbtag = (struct multiboot_header_tag_framebuffer *) tag;
accepted_consoles |= GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER;
break;
/* GRUB always page-aligns modules. */
case MULTIBOOT_HEADER_TAG_MODULE_ALIGN:
break;
case MULTIBOOT_HEADER_TAG_EFI_BS:
keep_bs = 1;
break;
default:
if (! (tag->flags & MULTIBOOT_HEADER_TAG_OPTIONAL))
{
grub_free (buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"unsupported tag: 0x%x", tag->type);
}
break;
}
if (addr_tag && !entry_specified)
{
grub_free (buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"load address tag without entry address tag");
}
if (addr_tag)
{
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 -
(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);
grub_size_t code_size;
void *source;
grub_relocator_chunk_t ch;
if (addr_tag->bss_end_addr)
code_size = (addr_tag->bss_end_addr - load_addr);
else
code_size = load_size;
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);
return err;
}
source = get_virtual_current_address (ch);
if ((grub_file_seek (file, offset)) == (grub_off_t) -1)
{
grub_free (buffer);
return grub_errno;
}
grub_file_read (file, source, load_size);
if (grub_errno)
{
grub_free (buffer);
return grub_errno;
}
if (addr_tag->bss_end_addr)
grub_memset ((grub_uint8_t *) source + load_size, 0,
addr_tag->bss_end_addr - load_addr - load_size);
}
else
{
err = grub_multiboot_load_elf (file, filename, buffer);
if (err)
{
grub_free (buffer);
return err;
}
}
if (entry_specified)
grub_multiboot_payload_eip = entry;
if (fbtag)
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
accepted_consoles,
fbtag->width, fbtag->height,
fbtag->depth, console_required);
else
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
accepted_consoles,
0, 0, 0, console_required);
return err;
}
grub_err_t
grub_multiboot_load (grub_file_t file, const char *filename)
{
char *buffer;
grub_ssize_t len;
struct multiboot_header *header;
grub_err_t err;
buffer = grub_malloc (MULTIBOOT_SEARCH);
if (!buffer)
return grub_errno;
len = grub_file_read (file, buffer, MULTIBOOT_SEARCH);
if (len < 32)
{
grub_free (buffer);
if (!grub_errno)
grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
filename);
return grub_errno;
}
grub_tpm_measure((unsigned char*)buffer, len, GRUB_KERNEL_PCR, filename);
header = find_header (buffer, len);
if (header == 0)
{
grub_free (buffer);
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no multiboot header found");
}
if (header->flags & UNSUPPORTED_FLAGS)
{
grub_free (buffer);
return grub_error (GRUB_ERR_UNKNOWN_OS,
"unsupported flag: 0x%x", header->flags);
}
err = load_kernel (file, filename, buffer, header);
if (err)
{
grub_free (buffer);
return err;
}
if (header->flags & MULTIBOOT_VIDEO_MODE)
{
switch (header->mode_type)
{
case 1:
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
GRUB_MULTIBOOT_CONSOLE_EGA_TEXT
| GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
0, 0, 0, 0);
break;
case 0:
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
GRUB_MULTIBOOT_CONSOLE_EGA_TEXT
| GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
header->width, header->height,
header->depth, 0);
break;
default:
err = grub_error (GRUB_ERR_BAD_OS,
"unsupported graphical mode type %d",
header->mode_type);
break;
}
}
else
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
0, 0, 0, 0);
return err;
}
