UEFI 2.6 9.3.6.4 File Path Media Device Path says that Path Name is
"A NULL-terminated Path string including directory and file names".
Strip final NULL from Path Name in each File Path node when constructing
full path. To be on safe side, strip all of them.
Fixes failure chainloading grub from grub, when loaded grub truncates
image path and does not find its grub.cfg.
https://bugzilla.opensuse.org/show_bug.cgi?id=1026344
This was triggered by commit ce95549cc54b5d6f494608a7c390dba3aab4fba7;
before it we built Path Name without trailing NULL, and apparently all
other bootloaders use single File Path node, thus not exposing this bug.
The path returned by grub_efi_net_config has already been stripped for the
directory part extracted from cached bootp packet. We should just return the
result to avoild it be stripped again.
It fixed the problem that grub.efi as NBP image always looking for grub.cfg and
platform directory in upper folder rather than current one it gets loaded while
$prefix is empty. The behavior is inconsistent with other architecture and how
we would expect empty $prefix going to be in general.
The only exception to the general rule of empty $prefix is that when loaded
from platform directory itself, the platform part is stripped thus upper folder
is used for looking up files. It meets the case for how grub-mknetdir lay out
the files under tftp root directory, but also hide away this issue to be
identified as it appears to be just works.
Also fix possible memory leak by moving grub_efi_get_filename() call after
grub_efi_net_config().
We only support FDT files with EFI on arm and arm64 systems, not
on x86. So move the helper that finds a prepopulated FDT UUID
into its own file and only build it for architectures where it
also gets called.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Searching for a device tree that EFI passes to us via configuration tables
is nothing architecture specific. Move it into generic code.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Add support for performing basic TPM measurements. Right now this only
supports extending PCRs statically and only on UEFI and BIOS systems, but
will measure all modules as they're loaded.
PIT isn't available on some of new hardware including Hyper-V. So
use pmtimer for calibration. Moreover pmtimer calibration is faster, so
use it on coreboor where booting time is important.
Based on patch by Michael Chang.
The current code for EFI grub_exit() calls grub_efi_fini() before
returning to firmware. In the case of ARM, this leaves a timer
event running which could lead to a firmware crash. This patch
changes this so that grub_machine_fini() is called with a NORETURN
flag. This allows machine-specific shutdown to happen as well
as the shutdown done by grub_efi_fini().
Signed-off-by: Mark Salter <msalter@redhat.com>
Hi,
Fedora's patch to forbid insmod in UEFI Secure Boot environments is fine
as far as it goes. However, the insmod command is not the only way that
modules can be loaded. In particular, the 'normal' command, which
implements the usual GRUB menu and the fully-featured command prompt,
will implicitly load commands not currently loaded into memory. This
permits trivial Secure Boot violations by writing commands implementing
whatever you want to do and pointing $prefix at the malicious code.
I'm currently test-building this patch (replacing your current
grub-2.00-no-insmod-on-sb.patch), but this should be more correct. It
moves the check into grub_dl_load_file.
The EFI version of grub_machine_get_bootlocation crops the boot image
name back to the last / in order to get a directory path. However, it
does not check that *name is actually set before calling grub_strrchr
to do this, and neither does grub_strrchr before dereferencing a NULL
pointer.
Parent function, grub_set_prefix_and_root, does check the pointer
before using.
* grub-core/commands/efi/efifwsetup.c: New file.
* grub-core/kern/efi/efi.c (grub_efi_set_variable): New function
* include/grub/efi/api.h (GRUB_EFI_OS_INDICATIONS_BOOT_TO_FW_UI):
New define.
* include/grub/efi/efi.h (grub_efi_set_variable): New proto.
* grub-core/kern/efi/efi.c (grub_rtc_get_time_ms) [__ia64__]: Remove on
ia64.
(grub_get_rtc) [__ia64__]: Likewise.
* grub-core/kern/ia64/efi/init.c (divisor): New variable.
(get_itc): New function.
(grub_rtc_get_time_ms): Likewise.
(grub_machine_init): Calibrate ITC.
* include/grub/efi/time.h (grub_get_rtc), (GRUB_TICKS_PER_SECOND):
Keep only on non-ia64. Don't export since it's broken and used only
if TSC is unavailable.
* grub-core/Makefile.am (KERNEL_HEADER_FILES): Add pci.h on x86 EFI.
* grub-core/Makefile.core.def (kernel): Add pci.c on x86 EFI.
(pci): Don't build on x86 EFI.
* grub-core/bus/pci.c (grub_pci_find_capability): New function.
* grub-core/kern/efi/mm.c (stop_broadcom) [__i386__ || __x86_64__]:
New function.
(grub_efi_finish_boot_services) [__i386__ || __x86_64__]: Call
stop_broadcom if running on EFI.
* include/grub/pci.h (GRUB_PCI_CLASS_NETWORK): New enum value.
(GRUB_PCI_CAP_POWER_MANAGEMENT): Likewise.
(GRUB_PCI_VENDOR_BROADCOM): Likewise.
(grub_pci_find_capability): New proto.
Also-By: Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/kern/efi/efi.c (grub_efi_get_variable): New argument
datasize_out.
* grub-core/video/efi_gop.c (check_protocol): Check that GOP has usable
modes. Set gop_handle.
(grub_video_gop_get_edid): New function.
(grub_gop_get_preferred_mode): Likewise.
(grub_video_gop_setup): Use grub_gop_get_preferred_mode.
(grub_video_efi_gop_adapter): Set .get_edid.
* include/grub/efi/edid.h: New file.
* include/grub/efi/efi.h (grub_efi_get_variable): Update proto.
Also-By: Vladimir Serbinenko <phcoder@gmail.com>
* Makefile.util.def (libgrubmods.a): Add grub-core/kern/ia64/dl_helper.c
* configure.ac: Add ia64-efi target.
Probe for __ia64_trampoline, __udivsi3, __umoddi3, __udivdi3,
__divsi3, __modsi3, __umodsi3, __moddi3 and __divdi3 symbols.
* gentpl.py: Add ia64_efi platform.
Rename x86_efi to efi and Add ia64-efi. All users updated.
* grub-core/Makefile.am: Set KERNEL_HEADER_FILES for ia64-efi.
* grub-core/Makefile.core.def (kernel.img): Add compile flags for ia64.
Remove kern/generic/rtc_get_time_ms.c on EFI.
Add kern/ia64/efi/startup.S, kern/ia64/efi/init.c, kern/ia64/dl.c,
kern/ia64/dl_helper.c on ia64-efi.
Add kern/emu/cache.c on emu.
(linux): Use on loader/ia64/efi/linux.c on ia64.
* grub-core/gensymlist.sh (grub_register_exported_symbols): Check
whether symbol is a function.
* grub-core/kern/dl.c [GRUB_MACHINE_EMU]: Include sys/mman.h.
(grub_symbol): New field 'isfunc'.
(grub_dl_resolve_symbol): Return whole symbol rather than just address.
(grub_dl_register_symbol): New argument 'isfunc'. All users updated.
(grub_dl_load_segments): Place all sections into the same region.
[__ia64__]: Create trampolines and got.
[GRUB_MACHINE_EMU]: Call mprotect.
(grub_dl_resolve_symbols): Resolve symbol type as well.
[__ia64__]: Create function descriptors.
* grub-core/kern/efi/efi.c (grub_get_rtc): Renamed to ...
(grub_rtc_get_time_ms): ... this. Expressions simplified.
(grub_get_rtc): New function.
* grub-core/kern/emu/cache.c [__ia64__]: New file.
* grub-core/kern/emu/cache.S: Renamed to ...
* grub-core/kern/emu/cache_s.S: ... this.
[__ia64__]: Add a nop.
* grub-core/kern/emu/full.c (grub_arch_dl_get_tramp_got_size)
[__ia64__]: New function.
* grub-core/kern/emu/lite.c [__ia64__]: Include ../ia64/dl.c.
* grub-core/kern/ia64/dl.c: New file.
* grub-core/kern/ia64/dl_helper.c: Likewise.
* grub-core/kern/ia64/efi/init.c: New file.
* grub-core/kern/ia64/efi/startup.S: Likewise.
* grub-core/lib/efi/halt.c [__ia64__]: Don't try acpi.
* grub-core/lib/ia64/longjmp.S: New file (from glibc).
* grub-core/lib/ia64/setjmp.S: Likewise (from glibc).
* grub-core/lib/setjmp.S [__ia64__]: Include ./ia64/setjmp.S.
* grub-core/loader/ia64/efi/linux.c: New file.
* include/grub/dl.h (GRUB_MOD_NAME): Redefined using C rather than asm.
(GRUB_MOD_DEP): Likewise.
(grub_dl) [__ia64__]: New fields got and tramp.
(grub_dl): New field 'base'.
(grub_dl_register_symbol): New argument isfunc. All users updated.
(GRUB_IA64_DL_TRAMP_ALIGN): New definition.
(GRUB_IA64_DL_TRAMP_SIZE): Likewise.
(GRUB_IA64_DL_GOT_ALIGN): Likewise.
(grub_ia64_dl_get_tramp_got_size): New proto.
(GRUB_ARCH_DL_TRAMP_ALIGN) [__ia64__]: Likewise
(GRUB_ARCH_DL_GOT_ALIGN) [__ia64__]: Likewise
(grub_arch_dl_get_tramp_got_size) [__ia64__]: Likewise
* include/grub/efi/api.h: Skip call wrappers on ia64.
* include/grub/efi/pe32.h (GRUB_PE32_MACHINE_IA64): New definition.
* include/grub/efi/time.h (GRUB_TICKS_PER_SECOND): Change to 1000.
* include/grub/elf.h (ELF_ST_INFO): New definition.
* include/grub/ia64/efi/kernel.h: New file.
* include/grub/ia64/efi/memory.h: Likewise.
* include/grub/ia64/efi/time.h: Likewise.
* include/grub/ia64/kernel.h: Likewise.
* include/grub/ia64/setjmp.h: Likewise (from glibc).
* include/grub/ia64/time.h: New file.
* include/grub/ia64/types.h: Likewise.
* include/grub/libgcc.h (__udivsi3, __umodsi3, __umoddi3, __udivdi3,
__moddi3, __divdi3, __divsi3, __modsi3, __ia64_trampoline):
New protos.
* include/grub/offsets.h (GRUB_KERNEL_IA64_EFI_PREFIX): New definition.
(GRUB_KERNEL_IA64_EFI_PREFIX_END): Likewise.
* include/grub/types.h (PRIxGRUB_ADDR): Likewise.
* util/grub-mkimage.c (image_target_desc): New field pe_target.
All users updated.
(EFI64_HEADER_SIZE): New definition. All users updated.
(image_targets): Add ia64-efi.
* util/grub-mkimagexx.c (relocate_symbols): New arguments jumpers and
jumpers_addr. All users updated.
Create function descriptors.
(count_funcs): New function.
(unaligned_uint32): New struct.
(MASK20): New definition.
(MASK19): Likewise.
(MASKF21): Likewise.
(add_value_to_slot_20b): New function.
(add_value_to_slot_21_real): Likewise.
(add_value_to_slot_21): Likewise.
(ia64_kernel_trampoline): New struct.
(nopm): New variable.
(jump): Likewise.
(make_trampoline): New function.
(relocate_addresses): Handle ia64.
(make_reloc_section): Likewise.
(load_image): Likewise.
Also-By: Robert Millan <rmh.grub@aybabtu.com>
Also-By: Vladimir Serbinenko <phcoder@gmail.com>
