When building the loader an unneeded .interp section may be added. Move
this to the unused section region so offsets of used sections don't
change.
Obtained from: CheriBSD
Sponsored by: Innovate UK
On RISC-V, Clang warns with:
cast to smaller integer type 'unsigned int' from 'void (*)(void *)'
Instead, use %p as the standard format specifier for printing pointers.
Whilst Arm's pointer size is the same as unsigned, it's still cleaner to
use the right thing there too.
Reviewed by: brooks (mentor), emaste
Approved by: brooks (mentor), emaste
Differential Revision: https://reviews.freebsd.org/D25718
This implementation doesn't have any major deviations from the other EFI
ports. I've copied the boilerplate from arm and arm64.
I've tested this with the following boot flows:
OpenSBI (M-mode) -> u-boot (S-mode) -> loader.efi -> FreeBSD
OpenSBI (M-mode) -> u-boot (S-mode) -> boot1.efi -> loader.efi -> FreeBSD
Due to the way that u-boot handles secondary CPUs, OpenSBI >= v0.7 is required,
as the HSM extension is needed to bring them up explicitly. Because of this,
using BBL as the SBI implementation will not be possible. Additionally, there
are a few recent u-boot changes that are required as well, all of which will be
present in the upcoming v2020.07 release.
Looks good: emaste
Differential Revision: https://reviews.freebsd.org/D25135
These mappings are never visible to userspace as they get replaced when
the amd64 pmap is bootstrapped, but there is no need to set PG_U in the
first place.
Reviewed by: alc, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24547
The vectx API, computes the hash for verifying a file as it is read.
This avoids the overhead of reading files twice - once to verify, then
again to load.
For doing an install via loader, avoiding the need to rewind
large files is critical.
This API is only used for modules, kernel and mdimage as these are the
biggest files read by the loader.
The reduction in boot time depends on how expensive the I/O is
on any given platform. On a fast VM we see 6% improvement.
For install via loader the first file to be verified is likely to be the
kernel, so some of the prep work (finding manifest etc) done by
verify_file() needs to be factored so it can be reused for
vectx_open().
For missing or unrecognized fingerprint entries, we fail
in vectx_open() unless verifying is disabled.
Otherwise fingerprint check happens in vectx_close() and
since this API is only used for files which must be verified
(VE_MUST) we panic if we get an incorrect hash.
Reviewed by: imp,tsoome
MFC after: 1 week
Sponsored by: Juniper Networks
Differential Revision: https://reviews.freebsd.org//D23827
Replace mini cons25 emulator with teken, this does enable us proper console
terminal for loader and will make it possible to implement different
back end callbacks to draw to screen.
At this time we still only "draw" in text mode.
ExitBootServices terminates all boot services including console access.
Attempting to call printf afterwards can result in a crash, depending on the
implementation.
Move any printf statements to before we call bi_load, and remove any that
depend on calling bi_load first.
Reviewed by: imp, tsoome
Differential Revision: https://reviews.freebsd.org/D19374
r328169 removed the copy of bootinfo that would've made this somewhat
functional. However, this is irrelevant- earlier work in r292338 was done to
exit boot services in the MI bi_load() rather than having N copies of the
GetMemoryMap/ExitBootServices dance.
i386 never quite caught up to that; ldr_enter was still being called but
the prereq for that, ldr_bootinfo, was no longer. As a consequence, this
ExitBootServices() was being called with a mapkey=0, clearly bogus, and
reportedly breaking the boot in some instances.
Reported by: bcran
MFC after: 1 week
Lua has a few places where it allocates a large buffer on the stack. This
is normally fine, except there are a few places where there can be multiple
frames with this buffer. This can cause a stack overflow on some arm64 SoCs.
Fix this by allocating our own stack in loader.efi large enough for these
objects. The required size has been found by tracing how the stack pointer
changes in a virtual machine and found to be no larger than 50kB. A
larger stack is allocated to reduce the likelihood of overflow from future
changes.
Reviewed by: kevans
Approved by: re (kib)
Differential Revision: https://reviews.freebsd.org/D16886
Compiling FreeBSD/i386 with modern GCC triggers warnings for various
places that convert 64-bit EFI_ADDRs to pointers and vice versa.
- Cast pointers to uintptr_t rather than to uint64_t when assigning
to a 64-bit integer.
- Cast 64-bit integers to uintptr_t before a cast to a pointer.
Reviewed by: kevans
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D16586
A foolish consistency is the hobgoblin of little minds, adored by
little statesmen and philosophers and divines. With consistency a
great soul has simply nothing to do. -- Ralph Waldo Emerson
When building loader bits, lld fails with the following error:
"ld: error: section: .dynamic is not contiguous with other relro sections"
on both ubldr and EFI loader.
Move .dynamic up to make ld.lld happy, adjust .got as necessary for ubldr.
Tested on: OrangePi One (ld.lld, ubldr)
Tested on: Banana Pi-M3 (ld.lld, ubldr)
Tested on: qemu-armv7 (ld.lld, EFI)
Tested on: qemu-armv7 (ld.bfd, EFI)
Tested on: Raspberry Pi 2 (ld.bfd, ubldr) [manu]
Tested on: Banana Pi-M2 (ld.bfd, ubldr) [manu]
Reviewed by: andrew, emaste, imp
Differential Revision: https://reviews.freebsd.org/D13942
