This uses the common U-Boot support lib (sys/boot/uboot, already used on
FreeBSD/powerpc), and assumes the underlying firmware has the modern API for
stand-alone apps enabled in the config (CONFIG_API).
Only netbooting is supported at the moment.
Obtained from: Marvell, Semihalf
bring in FIXUP_BOOT_DRV functionality as an #ifdef. This is not
enabled at this time, and the md5 remains constant with this change.
Apart from the 'accept any partitioning scheme on the device' changes,
this was the biggest delta...
# and yes, we'll merge these into one source file if we can do that in a
# way that makes sense.
Obtained from: sys/boot/arm/ixp425/boot2/boot2.c
boot an amd64 kernel. If not, then fail the boot request with an error
message. Otherwise, the boot attempt will fail with a BTX fault when
trying to read the EFER MSR.
MFC after: 3 days
code. Added a copyright for the work I did to this file a couple of
years ago. Add John's copyright too, since I'm sure I'll be pulling
more into this code. This also implements a new -n option to not
allow breaking into the boot sequence which was original in the patch
John posted (not in the original i386 code I based this boot2.c on,
only the name is the same). I haven't checked to see if he did that,
or if it was one of Sam's improvements.
Submitted by: jhay@
- extend ub_dev_read() and ub_dev_recv() so that the actual len and
all error codes can be passed and processed properly; unify behaviour of
these routines
- introduce syscall general error code (API_ESYSC)
of "cd:,\\:tbxi" with properly configured boot.tbxi, instead of booting
\boot\loader directly. Rev 183168 could probably stay, since it can be
viewed as an anti-foot-shooting measure and has no impact on normal
operation. I can revert it as well, if anybody objects.
they point to the very same device. This should make loader usable on
some (all?) PowerMacs, where "/chosen/stdout" is disconneted from the
"screen" by the OF init process by default, except when user actually
has requested interaction with OF by holding ALT-CMD-O-F. Along with
rev 183168 this should provide a way to build bootable FreeBSD/ppc
installation or live CD that works OOB. Also, it should bring PowerMac
experience closer to that on other arches.
MFC after: 1 week
(assiming re@ blessing)
isn't fixed to only open the network device once and not do a open
and close dance on every file access; the firmwares of newer sparc64
machines perform an auto-negotiation with every open which in turn
causes netbooting to take horribly long if we open and close the
device over and over again.
the locked entry in it16 slot 0, which typically is occupied by the
PROM, and manually entering locked entries in slots != 0.
Thanks to Hubert Feyrer for donating the Blade 2000 this change was
developed on.
to synchronization needed after stores to internal ASIs in order
to make side-effects visible. This mainly requires the MEMBAR #Sync
after such stores to be replaced with a FLUSH. We use KERNBASE as
the address to FLUSH as it is guaranteed to not trap. Actually,
the USII synchronization rules also already require a FLUSH in
pretty much all of the cases changed.
We're also hitting an additional USIII synchronization rule which
requires stores to AA_IMMU_SFSR to be immediately followed by a DONE,
FLUSH or RETRY. Doing so triggers a RED state exception though so
leave the MEMBAR #Sync. Linux apparently also has gotten away with
doing the same for quite some time now, apart from the fact that
it's not clear to me why we need to clear the valid bit from the
SFSR in the first place.
Reviewed by: nwhitehorn
- add new diag commands: devinfo, sysinfo for U-Boot-style details about the system
configuration
- better memory info summary
- style corrections
Obtained from: Semihalf
Global data (pointed by R2 on PowerPC) in principle is not guaranteed to be in
proximity of U-Boot heap (where the API signature is placed) accross different
architectures and platforms. Instead, use U-Boot stack pointer as a hint for
the search instead of the global data; this method tends to be more uniform
accross different platforms.
Obtained from: Semihalf
errata of USIII and beyond (USIII erratum #19, USIII+ erratum #1,
USIIIi erratum #1).
- Use the cheetah PA mask in {d,i}tlb_va_to_pa_sun4u() for USIII
and beyond. This is done so that these functions will still mask
the debug bits of spitfire-class CPUs once we increase TD_PA_BITS
to match the number of bits used for the PA by cheetah-class CPUs.
- Change {d,i}tlb_enter_sun4u() to also set TLB_CTX_KERNEL as the
context of the mappings entered. This is more or less cosmetic as
TLB_CTX_KERNEL is 0.
- Now that we have to distinguish between different sun4u CPUs in
the loader anyway, no longer do trial and error when reading the
portid property.
set the %eflags used during a BIOS call via BTX to 0x202. Previously
the flags field was uninitialized garbage, and thus it was "random" if
interrupts were enabled or not during BIOS calls.
- Use constants from <machine/psl.h> for fields in %eflags.
MFC after: 3 days
- I had errantly assumed that all user requests should run with interrupts
enabled. User requests for software interrupts, however, need to disable
interrupts (and tracing) just like hardware interrupts.
- Disable alignment checking when emulating a hardware interrupt as well
(based on the description of the real mode operation of the 'INT'
instruction in the IA-32 manuals).
- Use constants for fields in %eflags.
Tested by: bz
MFC after: 3 days
no particular reason for them to be implemented in assembler and
having them in C allows easier extension as well as using more C
macros and {d,i}tlb_slot_max rather than hard-coding magic (and
actually spitfire-only) values.
- Fix the compilation of pmap_print_tte().
- Change pmap_print_tlb() to use ldxa() rather than re-rolling it
inline as well as TLB_DAR_SLOT and {d,i}tlb_slot_max rather than
hardcoding magic (and actually spitfire-only) values.
- While at it, suffix the above mentioned functions with "_sun4u" to
underline they're architecture-specific.
- Use __FBSDID and macros instead of magic values in locore.S.
- Remove unused includes and smp_stack in locore.S.
commit, calling i386_parsedev(..., X, ...) where X is "ad", "bge", or
any other disk or network device name without a unit number, would
result in dereferencing whatever happened to be on the stack where the
variable "cp" is stored.
Found by: LLVM/Clang Static Checker
current@ and stable@ for the locking patches. The driver can always be
revived if someone tests it.
This driver also sleeps in its if_init routine, so it likely doesn't really
work at all anyway in modern releases.
Bonus: including kern.mk just to pick kernel warning flags
was an extremely bad idea anyway, because it also picked
up CFLAGS (it probably wasn't the case at the time of CVS
rev. 1.1, I haven't checked). Remove duplicate CWARNFLAGS
from CFLAGS.
- It is opt-out for now so as to give it maximum testing, but it may be
turned opt-in for stable branches depending on the consensus. You
can turn it off with WITHOUT_SSP.
- WITHOUT_SSP was previously used to disable the build of GNU libssp.
It is harmless to steal the knob as SSP symbols have been provided
by libc for a long time, GNU libssp should not have been much used.
- SSP is disabled in a few corners such as system bootstrap programs
(sys/boot), process bootstrap code (rtld, csu) and SSP symbols themselves.
- It should be safe to use -fstack-protector-all to build world, however
libc will be automatically downgraded to -fstack-protector because it
breaks rtld otherwise.
- This option is unavailable on ia64.
Enable GCC stack protection (aka Propolice) for kernel:
- It is opt-out for now so as to give it maximum testing.
- Do not compile your kernel with -fstack-protector-all, it won't work.
Submitted by: Jeremie Le Hen <jeremie@le-hen.org>
libi386's time(), caused by a qemu bug. The bug might
be present in other BIOSes, too.
qemu either does not simulate the AT RTC correctly or
has a broken BIOS 1A/02 implementation, and will return
an incorrect value if the RTC is read while it is being
updated.
The effect is worsened by the fact that qemu's INT 15/86
function ("wait" a.k.a. usleep) is non-implmeneted or
broken and returns immediately, causing beastie.4th to
spin in a tight loop calling the "read RTC" function
millions of times, triggering the problem quickly.
Therefore, we keep reading the BIOS value until we get
the same result twice. This change fixes beastie.4th's
countdown under qemu.
Approved by: des (mentor)
entry in the SMAP is a 20 byte structure and they are queried from the
BIOS via sucessive BIOS calls. Due to an apparent bug in the R900's
BIOS, for some SMAP requests the BIOS overflows the 20 byte buffer
trashing a few bytes of memory immediately after the SMAP structure. As
a workaround, add 8 bytes of padding after the SMAP structure used in
the loader for SMAP queries.
PR: i386/122668
Submitted by: Mike Hibler mike flux.utah.edu, silby
MFC after: 3 days
