Commit Graph

55 Commits

Author SHA1 Message Date
Marcin Wojtas
3aa023643e Disable PIE for powerpc bootloaders.
Bootloaders for powerpc are not built as position independent
code. Since bsd.prog.mk is used for building, when PIE is enabled,
the PIE flags are added and that causes the build to fail.
Adding MK_PIE=no stops bsd.prog.mk from adding PIE specific flags.

Submitted by: Dawid Gorecki <dgr@semihalf.com>
Reviewed by: emaste
Obtained from: Semihalf
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D28893
2021-02-25 00:26:11 +01:00
Toomas Soome
b2a8d7a9b5 loader: fix powerpc build with gfx_fb
Need to add stub data and gfx functions to make linking happy.
2021-01-04 16:57:58 +00:00
Conrad Meyer
78599c32ef Add CFI start/end proc directives to arm64, i386, and ppc
Follow-up to r353959 and r368070: do the same for other architectures.

arm32 already seems to use its own .fnstart/.fnend directives, which
appear to be ARM-specific variants of the same thing.  Likewise, MIPS
uses .frame directives.

Reviewed by:	arichardson
Differential Revision:	https://reviews.freebsd.org/D27387
2020-12-05 00:33:28 +00:00
Brandon Bergren
9e4c35f867 stand/ficl 64-bit compatibility
Currently, the only thing that prevents a functioning 64-bit FICL build is
a few integer types that were intended to be fixed-width.

Changing them to C99 integer types allows building a functioning 64-bit
FICL.

While this isn't applicable to the default settings of any in-tree loaders,
it is necessary for a future Petitboot loader, due to the requirement that
it be compiled as a 64-bit program.

Reviewed by:	tsoome, imp (earlier revision)
Sponsored by:	Tag1 Consulting, Inc.
Differential Revision:	https://reviews.freebsd.org/D26364
2020-09-14 15:48:30 +00:00
Brandon Bergren
a10ed08fe0 [PowerPC] Set fixed boot1.elf load address
Due to the way claiming works, we need to ensure on AIM OFW machines that
we don't have overlapping ranges on any step of the load.

Load boot1.elf at 0x38000 so it will not overlap with anything even if the
entire PReP partition gets loaded by OFW.

Tested on an iBook G4, a PowerBook G4, a PowerMac G5, and qemu pseries.
(qemu pseries is broken without this patch due to the high address used
by lld10.)

Reviewed by:	adalava
Sponsored by:	Tag1 Consulting, Inc.
Differential Revision:	https://reviews.freebsd.org/D24623
2020-05-01 16:56:36 +00:00
Leandro Lupori
0660bb6fa5 Add support to MSDOS FS in PPC loader
Although PPC OFW loader already had a LOADER_MSDOS_SUPPORT option, a few lines
were missing in conf.c, in order to support FAT filesystems.

This is useful when running FreeBSD under QEMU, to be able to easily change the
kernel and modules when running on hosts without UFS read/write support.

Reviewed by:	jhibbits
Sponsored by:	Eldorado Research Institute (eldorado.org.br)
Differential Revision:	https://reviews.freebsd.org/D24328
2020-04-07 19:46:00 +00:00
Kyle Evans
ed648b3f39 stand: -fno-common fixes for !x86 loaders
- beriloader: archsw is declared extern and defined elsewhere
- ofwloader: ofw_elf{,64} are defined in elf_freebsd.c and
  ppc64_elf_freebsd.c respectively
- ubldr: syscall_ptr is defined in start.S for whichever ubldr platform is
  building

-fno-common will become the default in GCC10/LLVM11.

MFC after:	3 days
2020-04-07 12:57:50 +00:00
Leandro Lupori
8883b17065 [PPC] Fix loader call to instantiate-rtas
OpenFirmware (OF) method instantiate-rtas was being called with a wrong
rtas-base-address argument. It must use the memory that is already being
allocated to this end instead. This issue was causing QEMU netboot to hang
when building the FDT from OF DT.

Reviewed by:	jhibbits
Sponsored by:	Eldorado Research Institute (eldorado.org.br)
Differential Revision:	https://reviews.freebsd.org/D24313
2020-04-07 12:46:26 +00:00
Simon J. Gerraty
afc571b1a6 veloader use vectx API for kernel and modules
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
2020-03-08 17:42:42 +00:00
Brandon Bergren
20ae0afeac [PowerPC] Fix LLD10 linking of ofw loader on ppc
Before this change, LLD10 was creating several extra PT_LOAD sections,
which OFW does not understand.

Like we do for the kernel already, specify the program headers manually.

Additionally, to work around a crash in our base ld.bfd, we need to
actually assign something to the output section. LLD does not need this.

One side effect of this change is the removal of the GNU_STACK header.
This is more correct, since we are using a statically-allocated stack and
RWX mappings across the board this early in boot.

Reviewed by:	jhibbits, Fangrui Song <i@maskray.me>
Sponsored by:	Tag1 Consulting, Inc.
Differential Revision:	https://reviews.freebsd.org/D23778
2020-02-25 00:45:09 +00:00
Brandon Bergren
a8614f0eec [PowerPC] Fix 32-bit ubldr calling convention
Due to the way u-boot for 32-bit powerpc is compiled, the interrupt code
assumes that the GOT pointer (r30) on u-boot is always intact.

When making syscalls to u-boot, ensure that we have restored r30 like we
found it before we enable interrupts to prevent u-boot from crashing if a
timer interrupt was pending.

This fixes ubldr on e500 qemu (assuming you have recompiled qemu's u-boot
with API support!)

Reviewed by:	jhibbits
Sponsored by:	Tag1 Consulting, Inc.
Differential Revision:	https://reviews.freebsd.org/D23258
2020-01-19 04:13:19 +00:00
Brandon Bergren
475008d6ca Move stand/ofw/libofw to stand/libofw.
Since rS330365, there has been no particular reason for libofw to be in a
subdirectory of ofw. Move libofw up a level to make it fit in better with
the other top level libraries.

Also add a LIBOFWSRC to stand/defs.mk to match what all the other
libraries are doing.

Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D23000
2020-01-02 04:34:22 +00:00
Justin Hibbits
9e319462a0 powerpc: Use builtins for fls/flsl
Summary:
There's no need to use the fallback fls() and flsl() libkern functions
when the PowerISA includes instructions that already do the bulk of the
work.  Take advantage of this through the GCC builtins __builtin_clz()
and __builtin_clzl().

Reviewed by:	luporl
Differential Revision:	https://reviews.freebsd.org/D22340
2019-12-08 04:36:42 +00:00
Justin Hibbits
dbef5f7155 loader/powerpc64: Include generic PVR values in CAS architecture list
Add generic PVR values for PowerISA 2.07 and 3.00.  This allows booting pseries
in QEMU with compatibilty mode enabled.

Submitted by:	Shawn Anastasio <shawn@anastas.io>
2019-10-08 02:36:53 +00:00
Kyle Evans
605261992c Revert r352557: powerpc/loader: Install ubldr without stripping
This was committed due to what was later diagnosed as an msdosfs bug
preventing in-place strip. This bug was fixed in r352564, and we agreed to
keep the workaround in for a bit to allow the driver fix a suitable amount
of propagation time for folks building/installing powerpc/ubldr, seeing as
how we were not in any hurry to revert.
2019-10-07 03:28:11 +00:00
Justin Hibbits
cd51f7df9c loader/powerpc64: Fix HV check for CAS usage
Logic was backwards.  The function returns true if it *is* running as a
hypervisor, whereas we want to only call the CAS utility if we're running as a
guest.

Reported by:	Shawn Anastasio <shawn@anastas.io>
2019-10-07 03:05:32 +00:00
Justin Hibbits
39404490b7 powerpc/loader: Install ubldr without stripping
Summary:
Install's strip capability, by way of strip(1), doesn't seem to work
correctly on msdosfs, and instead ends up truncating the resulting
binary to 0-length.  As a workaround, don't strip ubldr(8).  This
fixes installworld on Book-E ubldr-based platforms, which prior to this
would need to manually install ubldr separately after installworld, in
order to have a functional ubldr.

The same thing could be done on PowerNV platforms that use msdosfs /boot
volumes, since loader and loader.kboot, etc, all get truncated to 0 on
install.  However, PowerNV does not use loader, instead loading from
petitboot, so it's not really necessary at this time.

Reviewed by:	kevans
Differential Revision: https://reviews.freebsd.org/D21725
2019-09-20 13:35:28 +00:00
Brandon Bergren
9ae631858e Move CAS check in powerpc64 ofw loader until after the PVR check.
This unbreaks using the powerpc64 loader on a 32-bit processor.

Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D21297
2019-09-01 18:26:21 +00:00
Leandro Lupori
83e356c3c9 [PPC64] Implement CAS
Guest PPC OSs running under a hypervisor may communicate the features they
support, in order for the hypervisor to expose a virtualized machine in the way
the client (guest OS) expects (see LoPAPR 1.1 - B.6.2.3).

This is done by calling the "/ibm,client-architecture-support" (CAS) method,
informing supported features in option vectors.  Until now, FreeBSD wasn't
using CAS, but instead relied on hypervisor/QEMU's defaults.

The problem is that, without CAS, it is very inconvenient to run POWER9 VMs on
a POWER9 host running with radix enabled.  This happens because, in this case,
the QEMU default is to present the guest OS a dual MMU (HPT/RPT), instead of
presenting a regular HPT MMU, as FreeBSD expects, resulting in an early panic.
The known workarounds required either changing the host to disable radix or
passing a flag to QEMU to run in a POWER8 compatible mode.

With CAS, FreeBSD is now able to communicate that it wants an HPT MMU,
independent of the host setup, which now makes FreeBSD work on POWER9/pseries,
with KVM enabled and without hugepages (support added in a previous commit).

As CAS is invoked through OpenFirmware's call-method interface, it needs to be
performed early, when OpenFirmware is still operational. Besides, now that FDT
is the default way to inspect the device tree on PPC, OFW call-method feature
will be unavailable by default, when control is passed to the kernel. Because
of this, the call to CAS is being performed at the loader, instead of at the
kernel.

To avoid regressions with old platforms, this change uses CAS only on
POWER8/POWER9.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D20827
2019-07-31 20:31:36 +00:00
Justin Hibbits
4d6fa83c73 stand: TARGET_ARCH is spelled MACHINE_ARCH in Makefiles
Reported by:	imp
2019-05-21 03:05:24 +00:00
Justin Hibbits
b2775610c0 stand/powerpc: Only build loader.kboot for powerpc64
kboot is only made for powerpc64 systems, not 32-bit systems.

This unbreaks the build for powerpcspe.

Reported by:	ngie
2019-05-21 01:42:57 +00:00
Leandro Lupori
ff7449d6f5 [PowerPC64] stand: fix build using clang 8 as compiler
This change fixes "stand" build issues when using clang 8
as compiler.

Submitted by:   alfredo.junior_eldorado.org.br
Reviewed by:    jhibbits
Differential Revision: https://reviews.freebsd.org/D20026
2019-05-20 19:21:35 +00:00
Kyle Evans
2a1e52f347 stand: refactor overlay loading a little bit
It was pointed out that manually loading a .dtb to be used rather than
relying on platform-specific method for loading .dtb will result in overlays
not being applied. This was true because overlay loading was hacked into
fdt_platform_load_dtb, rather than done in a way more independent from how
the .dtb is loaded.

Instead, push overlay loading (for now) out into an
fdt_platform_load_overlays. This method easily allows ubldr to pull in any
fdt_overlays specified in the ub env, and omits overlay-checking on
platforms where they're not tested and/or not desired (e.g. powerpc). If we
eventually stop caring about fdt_overlays from ubenv (if we ever cared),
this method should get chopped out in favor of just calling
fdt_load_dtb_overlays() directly.

Reported by:	Manuel Stühn (freebsdnewbie freenet de)
2019-04-11 13:26:28 +00:00
Justin Hibbits
bc4d122db0 powerpc/boot: Move ubldr to /boot/uboot, and make this a separate filesystem
Summary:
Now that mpc85xx can boot via ubldr, move ubldr to a separate
filesystem, mounted on /boot/uboot, so that a fresh install can boot correctly.

Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D18709
2019-02-18 01:57:47 +00:00
Justin Hibbits
9471caaba7 powerpc/ubldr: Teach powerpc's ubldr to boot 64-bit kernels
This is just a copy of powerpc/ofw's ppc64_elf_freebsd.c modified to fit
ubldr's boot format.

MFC after:	1 week
2018-12-10 01:52:39 +00:00
Warner Losh
5f88ee4479 bootprog_info is generated in vers.c. Move it's definition to
bootstrap.h and remove all the redundant copies.

Sponsored by: Netflix
2018-06-14 06:41:33 +00:00
Warner Losh
56e53cb8ef Prefer uintXX_t to u_intXX_t
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
2018-03-13 16:33:00 +00:00
Nathan Whitehorn
18a119d74c Where we can, pass the kernel an FDT facsimile of the OF device tree rather
than a pointer to Open Firmware by default. This eliminates a number of
potentially unsafe calls to firmware from the kernel and provides better
performance.

This feature is meant to be expanded until it is on by default
unconditionally and, ideally, we can then garbage-collect the
nightmare pile of hacks required to call into Open Firmware from a live
kernel.

Reviewed by:	jhibbits
2018-03-04 04:49:09 +00:00
Nathan Whitehorn
e05bc4f98f Move "common" Open Firmware parts of the loader used only on PowerPC to
the powerpc/ subdirectory. These have never used by SPARC and we have
no other (and almost certainly will have no other) Open Firmware platforms.
This makes the directory structure simpler and lets us avoid some
cargo-cult MI patterns on code that is, and always was,
architecture-specific.
2018-03-03 23:39:07 +00:00
Kyle Evans
81fa17d177 stand: Fix build after r330249
One does not simply convert to SUBDIR.yes in stand without making everything
else in the affected files SUBDIR.yes -- there are better ways to do this.
2018-03-01 21:46:01 +00:00
Kyle Evans
27132543a0 stand: Makefile SUBDIR cleanup
Use SUBDIR.${MK_*} where appropriate. r330248 eliminated most of the
offenders, sweep the rest under the rug.

Differential Revision:	https://reviews.freebsd.org/D14545
2018-03-01 19:59:49 +00:00
Warner Losh
0c38f15ac7 Add NO_OBJ to those directories that don't make anything.
For directories that don't many anything, add NO_OBJ=t just before we
include bsd.init.mk. This prevents them from creating an OBJ
directory. In addition, prevent defs.mk from creating the machine
related links in these cases. They aren't needed and break, at least
on stable, the read-only src tree build.
2018-02-26 03:16:04 +00:00
Justin Hibbits
d3e1307bf5 Unify metadata load files for arm, mips, powerpc, sparc64
Summary:
All metadata.c files are very similar, with only trivial changes.  Unify them
into a single common file, with minor special-casing where needed.

Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D13978
2018-02-13 03:44:50 +00:00
Nathan Whitehorn
861a0b4808 Fix regression introduced in r328806, preventing boot at least on all
PowerPC Apple hardware, and likely all Open Firmware systems.

The loader would allocate memory for its heap at whatever address Open
Firmware gave it, which would in general be the lowest unallocated address,
usually starting a page or two above 0. As the kernel is linked at 1 MB,
and loader insists on running the kernel at its link address, any heap
larger than 1 MB would overlap the kernel, causing loader memory allocations
to corrupt the kernel and vice versa.

Although r328806 made this problem much worse by increasing the heap size
to 8 MB, causing 88% of the loader heap to overlap with the kernel, the
problem has always existed. The old heap size was 1 MB and, unless that
started exactly at zero, which would cause other problems, some number of
pages of the loader heap still overlapped with the kernel.

This patch solves the issue in two ways and cleans up some related code:
- Moves the loader heap inside of the loader. This guarantees that the
  heap will be contiguous with the loader and simplifies the heap
  allocation code at no cost, since the heap lives in BSS.
- Moves the loader, previously at 28 MB and dangerously close to the kernel
  it loads, a bit higher to 44 MB. This has the effect of breaking loader
  on non-embedded PPC machines with < 48 MB of RAM, but we did not support
  those anyway.

The fundamental problem is that the way loader loads ELF files is
incredibly fragile, but that can't be fixed without fundamental
architectural changes.

MFC after:	10 days
2018-02-03 23:49:21 +00:00
Warner Losh
891b84a3aa Invent new LDR_INTERP for the loader interpreter to use. Use this in
preference to LIBFICL{,32}. LIBFICL{,32} are now always defined, but
LDR_INTERP{,32} is defined empty when building w/o forth (aka the
simple interpreter) and defined to LIBFICL{,32} when we are building
forth.
2018-02-02 15:40:49 +00:00
Warner Losh
8299b37f85 Centralize several variables.
MK_CTF, MK_SSP, MK_PROFILE, NO_PIC, and INTERNALLIB are always the
same, so set them in defs.mk. MAN= is common, so set it here too.
This removes a lot of boring repetition from the Makefiles that added
almost no value.
2018-02-02 06:32:26 +00:00
Wojciech Macek
8de1ad0b9b loader: support for mixed-endianness ELF/loader and POWER8
On POWER8 with current petitpoot, the loader.kboot might be
run as little-endian application. The FreeBSD kernel is
always big-endian, so the load_elf_* routines must be aware
of proper endianness of all fields.

Submitted by:          Wojciech Macek <wma@semihalf.com>
Obtained from:         Semihalf
Sponsored by:          IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D12422
2018-01-29 09:24:28 +00:00
Warner Losh
47940d8594 Tag unreachable places as such. I left the while (1); in place since
in this context we want to busy wait to stop.

Suggested by: pfg@
2018-01-26 22:22:21 +00:00
Warner Losh
71710c12d6 Make exit() never return until host_exit can be written. 2018-01-26 21:51:13 +00:00
Nathan Whitehorn
3159111ed6 Garbage-collect loader.ps3. It is currently disconnected from the build and
is superseded by either direct loading of the kernel by petitboot (soon to
become the installer default) or loader.kboot.
2017-12-30 20:27:13 +00:00
Warner Losh
6bc860372d Interact is always called with NULL. Simplify code a little by
removing this argument, and expanding when rc is NULL. This
effectively completes the back out of custom scripts for tftp booted
loaders from r269153 that was started in r292344 with the new path
tricks that obsoleted it.

Submitted by: Netflix
2017-12-19 04:05:55 +00:00
Warner Losh
25c2f4cb95 Move loader help file definitions to being 100% inside of loader.mk.
HELP_FILES is a loader only thing, so move it to loader.mk. Only
generate the help file if HELP_FILES is defined. Adjust Makefiles to
new convention. Fix a few cases where ${.CURDIR}/ was missing
resulting in missing bits from the help files.

Sponsored by: Netflix
2017-12-18 04:51:34 +00:00
Warner Losh
ba25195ebf Revert r326792, r326784, r326772, r326712
Something subtle is creating problems for disk access on ubldr. Back
it out unti that can be sorted out.

Sponsored by: Netflix
2017-12-12 22:06:22 +00:00
Warner Losh
c83457486b Fix regression with lua import
Don't print when we can't find a file. Copy it instead to the error
buffer. Higher level routines determine if it's appropriate to print
the error message.

Also, remove dead code (labeled bogusly lost functionality) since we
never used that functionality. Remove unused arg from interact() too.

Sponsored by: Netflix
2017-12-11 16:18:05 +00:00
Warner Losh
f8bb886226 Provide a md_load64 prototype.
Sponsored by: Netflix
2017-12-03 04:55:28 +00:00
Warner Losh
6f1066fa3c Cast void * pointer to char * so the arg matches the %s format.
Sponsored by: Netflix
2017-12-03 04:55:23 +00:00
Warner Losh
b21ed88a41 Disconnet ps3 from the build. There's too many warnings to fix. Also,
it's going to be removed soon anyway once the final lingering issues
with kboot are resolved. Go ahead and disconnect it from the build a
little early.

Sponsored by: Netflix
OK'd by: nathanw@
2017-12-03 04:55:19 +00:00
Warner Losh
afb769e9f8 Declare our strange brand of main().
Sponsored by: Netflix
2017-12-03 04:55:14 +00:00
Warner Losh
a76b2d3d57 Include machine/md_var to pick up __syncicache prototype.
Sponsored by: Netflix
2017-12-03 04:54:54 +00:00
Warner Losh
b65d776328 Cleanup CFALGS usage here
Only define the CFLAGS we need.
SSP_CFLAGS is now defined globally, no need to define it here.
Define -D_STANDALONE globally for src/stand builds.

Sponsored by: Netflix
2017-12-02 00:07:04 +00:00