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360695 |
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06-May-2020 |
brooks |
MFC r359974:
Don't directly access userspace memory.
Rather then using the racy useracc() followed by direct access to userspace memory, perform a copyin() and use the result if it succeeds.
Reviewed by: jhb Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D24410
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344905 |
|
08-Mar-2019 |
jhb |
MFC 340020: Don't enter DDB for fatal traps before panic by default.
Add a new 'debugger_on_trap' knob separate from 'debugger_on_panic' and make the calls to kdb_trap() in MD fatal trap handlers prior to calling panic() conditional on this new knob instead of 'debugger_on_panic'. Disable the new knob by default. Developers who wish to recover from a fatal fault by adjusting saved register state and retrying the faulting instruction can still do so by enabling the new knob. However, for the more common case this makes the user experience for panics due to a fatal fault match the user experience for other panics, e.g. 'c' in DDB will generate a crash dump and reboot the system rather than being stuck in an infinite loop of fatal fault messages and DDB prompts.
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338515 |
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06-Sep-2018 |
jhb |
MFC 332909: Report proper signal codes for SIGTRAP traps on MIPS.
- Use TRAP_TRACE for traps after stepping via PT_STEP. - Use TRAP_BRKPT for software breakpoint traps and watchpoint traps.
This was tested via the recently added siginfo ptrace() tests. PT_STEP on MIPS has several bugs that prevent it from working yet, but this does fix the ptrace__breakpoint_siginfo test on MIPS.
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335556 |
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22-Jun-2018 |
avg |
MFC r333667: followup to r332730/r332752: set kdb_why to "trap" for fatal traps
This change updates arm, arm64 and mips achitectures. Additionally, it removes redundant checks for kdb_active where it already results in kdb_reenter() and adds kdb_reenter() calls where they were missing.
Some architectures check the return value of kdb_trap(), but some don't. I haven't changed any of that.
Some trap handling routines have a return code. I am not sure if I provided correct ones for returns after kdb_reenter(). kdb_reenter should never return unless kdb_jmpbufp is NULL for some reason.
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331722 |
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29-Mar-2018 |
eadler |
Revert r330897:
This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code.
Revert with prejudice.
This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes.
Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes.
Requested by: gjb (re)
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331168 |
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19-Mar-2018 |
eadler |
MFC r303812:
Use a more conventional spelling of "breakpoint".
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330897 |
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14-Mar-2018 |
eadler |
Partial merge of the SPDX changes
These changes are incomplete but are making it difficult to determine what other changes can/should be merged.
No objections from: pfg
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321343 |
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21-Jul-2017 |
kib |
MFC r319873: Move struct syscall_args syscall arguments parameters container into struct thread.
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302408 |
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07-Jul-2016 |
gjb |
Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle. Prune svn:mergeinfo from the new branch, as nothing has been merged here.
Additional commits post-branch will follow.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
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299118 |
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05-May-2016 |
br |
Implement FBT provider (MD part) for DTrace on MIPS. Tested on MIPS64.
Sponsored by: DARPA, AFRL Sponsored by: HEIF5
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298433 |
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21-Apr-2016 |
pfg |
sys: use our roundup2/rounddown2() macros when param.h is available.
rounddown2 tends to produce longer lines than the original code and when the code has a high indentation level it was not really advantageous to do the replacement.
This tries to strike a balance between readability using the macros and flexibility of having the expressions, so not everything is converted.
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290258 |
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02-Nov-2015 |
adrian |
mips: rate limit the trap handler output; add pid/tid/program name.
I discovered that we're logging each trap, which gets pretty spendy; and there wasn't any further information on the pid/tid/progname involved.
I originally noticed this because I don't attach anything to /dev/log and so the log() output stays going to the kernel. That's an oops on my part, but I'm glad I did it.
This commit adds the following:
* a rate limiter, which could do with some eyeballs/ideas on how to make it more predictable on SMP; * log pid, tid, progname (comm) as part of the output.
I now get output like this:
Unaligned Load Word: pid=621 (pmcstat), tid=100060, pc=0xffffffff803ae898, badvaddr=0x40a10055 Unaligned Load Word: pid=621 (pmcstat), tid=100060, pc=0xffffffff803ae898, badvaddr=0x40a10051 Unaligned Load Word: pid=621 (pmcstat), tid=100060, pc=0xffffffff803ae898, badvaddr=0x40a1004d Unaligned Load Word: pid=602 (login), tid=100042, pc=0xffffffff803ae898, badvaddr=0x401159 Unaligned Load Word: pid=602 (login), tid=100042, pc=0xffffffff803ae898, badvaddr=0x401155 Unaligned Load Word: pid=602 (login), tid=100042, pc=0xffffffff803ae898, badvaddr=0x401151
.. which makes it much easier to start figuring out what/where to fix.
The pc looks suss (it looks like it's in kernel space); I'll dig into that one next.
Tested:
* AR9331 SoC (Carambola2)
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287625 |
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10-Sep-2015 |
kib |
Do not hold the process around the vm_fault() call from the trap()s. The only operation which is prevented by the hold is the kernel stack swapout for the faulted thread, which should be fine to allow.
Remove useless checks for NULL curproc or curproc->p_vmspace from the trap_pfault() wrappers on x86 and powerpc.
Reviewed by: alc (previous version) Sponsored by: The FreeBSD Foundation MFC after: 2 weeks
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276142 |
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23-Dec-2014 |
markj |
Restore the trap type argument to the DTrace trap hook, removed in r268600. It's redundant at the moment since it can be obtained from the trapframe on the architectures where DTrace is supported, but this won't be the case with ARM.
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274668 |
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18-Nov-2014 |
imp |
opt_global.h is included automatically in the build. No need to explicitly include it in these places.
Sponsored by: Netflix
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268600 |
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14-Jul-2014 |
markj |
Invoke the DTrace trap handler before calling trap() on amd64. This matches the upstream implementation and helps ensure that a trap induced by tracing fbt::trap:entry is handled without recursively generating another trap.
This makes it possible to run most (but not all) of the DTrace tests under common/safety/ without triggering a kernel panic.
Submitted by: Anton Rang <anton.rang@isilon.com> (original version) Phabric: D95
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266827 |
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28-May-2014 |
markj |
Commit the rest of the changes that were intended to be part of r266826.
X-MFC-with: r266826
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258541 |
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25-Nov-2013 |
attilio |
- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging option, unbreak the lock tracing release semantic by embedding calls to LOCKSTAT_PROFILE_RELEASE_LOCK() direclty in the inlined version of the releasing functions for mutex, rwlock and sxlock. Failing to do so skips the lockstat_probe_func invokation for unlocking. - As part of the LOCKSTAT support is inlined in mutex operation, for kernel compiled without lock debugging options, potentially every consumer must be compiled including opt_kdtrace.h. Fix this by moving KDTRACE_HOOKS into opt_global.h and remove the dependency by opt_kdtrace.h for all files, as now only KDTRACE_FRAMES is linked there and it is only used as a compile-time stub [0].
[0] immediately shows some new bug as DTRACE-derived support for debug in sfxge is broken and it was never really tested. As it was not including correctly opt_kdtrace.h before it was never enabled so it was kept broken for a while. Fix this by using a protection stub, leaving sfxge driver authors the responsibility for fixing it appropriately [1].
Sponsored by: EMC / Isilon storage division Discussed with: rstone [0] Reported by: rstone [1] Discussed with: philip
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257417 |
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31-Oct-2013 |
markj |
Remove references to an unused fasttrap probe hook, and remove the corresponding x86 trap type. Userland DTrace probes are currently handled by the other fasttrap hooks (dtrace_pid_probe_ptr and dtrace_return_probe_ptr).
Discussed with: rpaulo
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256939 |
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22-Oct-2013 |
brooks |
MFP4: Change 221767 by rwatson@rwatson_zenith_cl_cam_ac_uk on 2013/02/05 14:18:53
When printing out information on a TLB MOD exception for a user process (e.g., an attempt to write to a read-only page), report it as a "write" in the console message, rather than "unknown".
Change 221768 by rwatson@rwatson_zenith_cl_cam_ac_uk on 2013/02/05 14:28:00
Fix post-compile but pre-commit typo in last changeset.
MFC after: 3 days Sponsored by: DARPA/AFRL
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250138 |
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01-May-2013 |
imp |
Don't include asm.h in non-asm files. Remove #define to get kludges that asm.h used to define Move clever macros to access assembler instructions to trap.c Remove __ASSEMBLER__ ifdefs in regdef.h: they aren't needed anymore.
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249902 |
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25-Apr-2013 |
imp |
Minor whitespace nit
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249847 |
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24-Apr-2013 |
imp |
Fix N32/N64 ABIs to use proper registers after recent changes.
Pointy Hat to: imp
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249790 |
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23-Apr-2013 |
imp |
Update trapframe to be consistent with the changes made to regnum.h. This should fix the booting problems people have been seeing.
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240244 |
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08-Sep-2012 |
attilio |
userret() already checks for td_locks when INVARIANTS is enabled, so there is no need to check if Giant is acquired after it.
Reviewed by: kib MFC after: 1 week
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239669 |
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25-Aug-2012 |
rwatson |
On MIPS, when printing page fault information for an unexpected exception type, explicitly print out "unknown" rather than the empty string, and include the exception type number for ease of debugging.
Sponsored by: DARPA, AFRL
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239126 |
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07-Aug-2012 |
imp |
Fix obvious problem with emulate_fp sysctl.
Submitted by: Paul Ambrose <ambrosehua@gmail.com>
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233638 |
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29-Mar-2012 |
jmallett |
Disable FP instruction emulation by default on !o32 because of ABI concerns.
Note that in practice this isn't needed because we get a coprocessor unusable exception first, but that's actually something like a bug.
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233412 |
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24-Mar-2012 |
gonzo |
Add DTrace-related part to machine-dependent code:
- DTrace trap handler - invop-related variables (unused on MIPS but still referenced from dtrace)
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232615 |
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06-Mar-2012 |
jmallett |
At the risk of reducing source compatibility with old NetBSD and Sprite: o) Get rid of some unused macros related to features we don't intend to provide. o) Get rid of macro definitions for MIPS-I CPUs. We are not likely to support anything that predartes MIPS-III. o) Respell MIPS3_* macros as MIPS_*, which is how most of them were being used already. o) Eliminate a duplicate and mostly-unused set of exception vector macros.
There's still considerable duplication and lots more obsolete in our headers, but this reduces one of the larger files to a size where one could reckon about the correctness of its contents with a mere few hours of contemplation.
There is, of course, a question of whether we need definitions for fields, registers and configurations that we are unlikely to ever use or implement, even if they're not obsolete since 1991. FreeBSD is not a processor reference manual, and things that aren't used may be wrong, or may be duplicated because nobody could possibly actually know whether they're already defined.
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232583 |
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06-Mar-2012 |
jmallett |
When emulating rdhwr for TLS, use the 32-bit offset under COMPAT_FREEBSD32.
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232577 |
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06-Mar-2012 |
gonzo |
Prepare for large TLS redo. Save pointer to the beginning of TLS area, and offset it only if requested by RDHWR handler. Otherwise things get overly complicated - we need to track whether address passsed in request for setting td_md.md_tls is already offseted or not.
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232576 |
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06-Mar-2012 |
jmallett |
In the trap messages that aid the primitive debugging environment of MIPS, include the tid as well, so it's easier to tell which thread of a process with multiple is responsible for a crash.
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232452 |
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03-Mar-2012 |
jmallett |
Unbreak n64 build without COMPAT_FREEBSD32 by fixing mismatched preprocessor conditionals.
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232449 |
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03-Mar-2012 |
jmallett |
o) Add COMPAT_FREEBSD32 support for MIPS kernels using the n64 ABI with userlands using the o32 ABI. This mostly follows nwhitehorn's lead in implementing COMPAT_FREEBSD32 on powerpc64. o) Add a new type to the freebsd32 compat layer, time32_t, which is time_t in the 32-bit ABI being used. Since the MIPS port is relatively-new, even the 32-bit ABIs use a 64-bit time_t. o) Because time{spec,val}32 has the same size and layout as time{spec,val} on MIPS with 32-bit compatibility, then, disable some code which assumes otherwise wrongly when built for MIPS. A more general macro to check in this case would seem like a good idea eventually. If someone adds support for using n32 userland with n64 kernels on MIPS, then they will have to add a variety of flags related to each piece of the ABI that can vary. That's probably the right time to generalize further. o) Add MIPS to the list of architectures which use PAD64_REQUIRED in the freebsd32 compat code. Probably this should be generalized at some point.
Reviewed by: gonzo
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231314 |
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09-Feb-2012 |
gonzo |
Fix n32 build breakage
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231312 |
|
09-Feb-2012 |
gonzo |
- Emulate RDHWR instruction for TLS support
Reading register $29 with RDHWR is becoming the de-facto standard to implement TLS. According to linux-mips wiki, MIPS Technologies has reserved hardware register $29 for ABI use. Furthermore current GCC makes the following assumptions: - RDHWR is natively available or otherwise emulated by the kernel - Register $29 holds the TLS pointer
Submitted by: Robert Millan <rmh@debian.org>
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229677 |
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05-Jan-2012 |
gonzo |
- Add better COP2 (crypto coprocessor) context handler for Octeon. Keep COP2 disabled and lazily allocate COP2 context structure in exception handler. Keep kernel and userland contexts separated.
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#
226065 |
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06-Oct-2011 |
kib |
Convert MIPS to the syscallenter/syscallret system call sequence handlers. This was the last architecture used custom syscall entry sequence.
Reviewed, debugged, tested and approved by: jchandra MFC after: 1 month
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223562 |
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26-Jun-2011 |
kevlo |
Remove duplicate header includes
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217345 |
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13-Jan-2011 |
jchandra |
Cleanup physical address and PTE types on MIPS.
1. Use vm_paddr_t for physical addresses.
There are a few places in the MIPS platform code where vm_offset_t is used for physical addresses, change these to use vm_paddr_t: - phys_avail[], physmem_desc[] arrays - pmap_mapdev(), page_is_managed(), is_cacheable_mem() pmap_map() args - local variables of various pmap functions
2. Change init_pte_prot() return from int to pt_entry_t, as this can be 64 bit when using 64 bit TLB entries.
3. Update printing of pt_entry_t and of vm_paddr_t to use 'j' format with uintmax_t. This will be useful later if we plan to use 64bit phsical addr on 32 bit n32 compilation.
Reviewed by: imp
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212632 |
|
15-Sep-2010 |
neel |
Make the meaning of the 'mask' argument to 'set_intr_mask(mask)' consistent with the meaning of IM bits in the status register.
Reviewed by: jmallett, jchandra
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211217 |
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12-Aug-2010 |
jchandra |
Implement pmap changes suggested by alc@:
1. Move dirty bit emulation code that is duplicted for kernel and user in trap.c to a function pmap_emulate_modified() in pmap.c.
2. While doing dirty bit emulation, it is not necessary to update the TLB entry on all CPUs using smp_rendezvous(), we can just update the TLB entry on the current CPU, and let the other CPUs update their TLB entry lazily if they get an exception.
Reviewed by: alc, neel
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210698 |
|
31-Jul-2010 |
jchandra |
Use fuword32() to fetch instructions, this will work on both 32 and 64 bit compilation.
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210596 |
|
29-Jul-2010 |
neel |
Fix build for o32 kernels.
The emulation of 'ld' and 'sd' instructions only works for ABIs that support 64-bit registers and the instructions 'ldl' and 'ldr' that operate on those registers.
Reviewed by: jmallett
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210595 |
|
29-Jul-2010 |
jmallett |
o) Subtract 64K from the default userland stack pointer. GCC generate code that with a 32-bit ABI on a system with 64-bit registers can attempt to access an invalid (well, kernel) memory address rather than the intended user address for stack-relative loads and stores. Lowering the stack pointer works around this. [1] o) Make TRAP_DEBUG code conditional on the trap_debug variable. Make trap_debug default to 0 instead of 1 now but make it possible to change it at runtime using sysctl. o) Kill programs that attempt an unaligned access of a kernel address. Note that with some ABIs, calling useracc() is not sufficient since the register may be 64-bit but vm_offset_t is 32-bit so a kernel address could be truncated to what looks like a valid user address, allowing the user to crash the kernel. o) Clean up unaligned access emulation to support unaligned 16-bit and 64-bit accesses. (For 16-bit accesses it was checking for user access to too much memory (4 bytes) and there was no 64-bit support.) This still lacks support for unaligned load-linked and store-conditional.
Reviewed by: [1] gonzo
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210038 |
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13-Jul-2010 |
imp |
Prefer the cpuregs.h spellings of register and bit names over cpu.h.
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209500 |
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24-Jun-2010 |
jchandra |
Merge jmallett@'s n64 work into HEAD - changeset 7
Initial support for n32 and n64 ABIs from http://svn.freebsd.org/base/user/jmallett/octeon
Changes are: - syscall, exception and trap support for n32/n64 ABIs - 64-bit address space defines - _jmp_buf for n32/n64 - casts between registers and ptr/int updated to work on n32/n64
Approved by: rrs(mentor), jmallett
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209482 |
|
23-Jun-2010 |
jchandra |
Merge jmallett@'s n64 work into HEAD - changeset 6
PTE flag cleanup from http://svn.freebsd.org/base/user/jmallett/octeon - Rename PTE_xx flags to match their MIPS names - Use the new pte_set/test/clear macros uniformly, instead of a mixture of mips_pg_xxx(), pmap_pte_x() macros and direct access. - Remove unused macros and defines from pte.h and pmap.c
Discussed on freebsd-mips@
Approved by: rrs(mentor), jmallett
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209243 |
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17-Jun-2010 |
jchandra |
Merge jmallett@'s n64 work into HEAD - changeset 4
Re-write tlb operations in C with a simpler API. Update callers to use the new API.
Changes from http://svn.freebsd.org/base/user/jmallett/octeon
Approved by: rrs(mentor), jmallett
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208453 |
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23-May-2010 |
kib |
Reorganize syscall entry and leave handling.
Extend struct sysvec with three new elements: sv_fetch_syscall_args - the method to fetch syscall arguments from usermode into struct syscall_args. The structure is machine-depended (this might be reconsidered after all architectures are converted). sv_set_syscall_retval - the method to set a return value for usermode from the syscall. It is a generalization of cpu_set_syscall_retval(9) to allow ABIs to override the way to set a return value. sv_syscallnames - the table of syscall names.
Use sv_set_syscall_retval in kern_sigsuspend() instead of hardcoding the call to cpu_set_syscall_retval().
The new functions syscallenter(9) and syscallret(9) are provided that use sv_*syscall* pointers and contain the common repeated code from the syscall() implementations for the architecture-specific syscall trap handlers.
Syscallenter() fetches arguments, calls syscall implementation from ABI sysent table, and set up return frame. The end of syscall bookkeeping is done by syscallret().
Take advantage of single place for MI syscall handling code and implement ptrace_lwpinfo pl_flags PL_FLAG_SCE, PL_FLAG_SCX and PL_FLAG_EXEC. The SCE and SCX flags notify the debugger that the thread is stopped at syscall entry or return point respectively. The EXEC flag augments SCX and notifies debugger that the process address space was changed by one of exec(2)-family syscalls.
The i386, amd64, sparc64, sun4v, powerpc and ia64 syscall()s are changed to use syscallenter()/syscallret(). MIPS and arm are not converted and use the mostly unchanged syscall() implementation.
Reviewed by: jhb, marcel, marius, nwhitehorn, stas Tested by: marcel (ia64), marius (sparc64), nwhitehorn (powerpc), stas (mips) MFC after: 1 month
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206749 |
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17-Apr-2010 |
jmallett |
o) Make pcb_onfault a pointer rather than an obscure integer value. o) Mask off PAGE_MASK bits in pmap_update_page, etc., rather than modifying the badvaddr in trapframe. Some nearby interfaces already did this. o) Make PTEs "unsigned int" for now, not "unsigned long" -- we are only ready for them to be 32-bit on 64-bit platforms. o) Rather than using pmap_segmap and calculating the offset into the page table by hand in trap.c, use pmap_pte(). o) Remove unused quad_syscall variable in trap.c. o) Log things for illegal instructions like we do for bad page faults. o) Various cast cleanups related to how to print registers. o) When logging page faults, show the page table information not just for the program counter, but for the fault address. o) Modify support.S to use ABI-neutral macros for operating on pointers. o) Consistently use CALLFRAME_SIZ rather than STAND_FRAME_SIZE, etc. o) Remove unused insque/remque functions. o) Remove some coprocessor 0 accessor functions implemented in assembly that are unused and have inline assembly counterparts.
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206746 |
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17-Apr-2010 |
jmallett |
o) Add NPDEPG, like NPTEPG but for PDEs. o) Remove NBPG, PGOFSET and PGSHIFT. Use the standard names. o) Remove some unused macros and move things from param.h to vmparam.h that belong in the latter. (Actually, all of the kernel segment values, virtual addresses, etc., belong in one place, but this is a step in the right direction.)
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206717 |
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16-Apr-2010 |
jmallett |
o) Use inline functions to access coprocessor 0 registers rather than external ones implemented using assembly. o) Use TRAPF_USERMODE() consistently rather than USERMODE(). Eliminate <machine/psl.h> as a result. o) Use intr_*() rather than *intr(), consistently. o) Use register_t instead of u_int in some trap code. o) Merge some more endian-related macros to machine/asm.h from NetBSD. o) Add PTR_LI macro, which loads an address with the correct sign-extension for a pointer. o) Restore interrupts when bailing out due to an excessive IRQ in nexus_setup_intr(). o) Remove unused functions from psraccess.S. o) Enter temporary virtual entries for large memory access into the page tables rather than simply hoping they stay resident in the TLB and we don't need to do a refill for them. o) Abstract out large memory mapping setup/teardown using some macros. o) Do mips_dcache_wbinv_range() when using temporary virtual addresses just like we do when we can use the direct map.
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206695 |
|
16-Apr-2010 |
jmallett |
Remove some unused header files.
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205360 |
|
20-Mar-2010 |
neel |
This change enables use of physical memory that is beyond the direct mapped kseg0 region.
The basic idea is to use KVA from the kseg2 region for mapping page table pages that lie beyond the direct mapped region.
The TLB miss handler can now recursively fault into the TLB invalid handler if it dereferences a kseg2 page table page address that is not in the TLB.
Tested by: JC (c.jayachandran@gmail.com)
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203476 |
|
04-Feb-2010 |
neel |
Get system call tracing using ktrace working for mips.
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#
202175 |
|
12-Jan-2010 |
imp |
Set the svn:eol-style = native and svn:mime-type = text/plain properties on all files in this tree.
Submitted by: rpaulo@
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202046 |
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10-Jan-2010 |
imp |
Merge from projects/mips to head by hand:
sorry for the huge firehose on this commit, it would be too tedious to do file by file
r201881 | imp | 2010-01-08 20:08:22 -0700 (Fri, 08 Jan 2010) | 3 lines Rename mips_pcpu_init to mips_pcpu0_init since it applies only to the BSP. Provide a missing prototype.
r201880 | neel | 2010-01-08 19:17:14 -0700 (Fri, 08 Jan 2010) | 7 lines Compute the target of the jump in the 'J' and 'JAL' instructions correctly. The 256MB segment is formed by taking the top 4 bits of the address of the instruction in the "branch delay" slot as opposed to the 'J' or 'JAL' instruction itself.
r201845 | imp | 2010-01-08 15:48:21 -0700 (Fri, 08 Jan 2010) | 2 lines Centralize initialization of pcpu, and set curthread early...
r201770 | neel | 2010-01-07 22:53:11 -0700 (Thu, 07 Jan 2010) | 4 lines Add a DDB command "show pcb" to dump out the contents of a thread's PCB.
r201631 | neel | 2010-01-05 23:42:08 -0700 (Tue, 05 Jan 2010) | 5 lines Remove all CFE-specific code from locore.S. The CFE entrypoint initialization is now done in platform-specific code.
r201563 | neel | 2010-01-04 23:58:54 -0700 (Mon, 04 Jan 2010) | 6 lines This change increases the size of the kernel stack for thread0 from PAGE_SIZE to (2 * PAGE_SIZE). It depends on the memory allocated by pmap_steal_memory() being aligned to a PAGE_SIZE boundary.
r200656 | imp | 2009-12-17 16:55:49 -0700 (Thu, 17 Dec 2009) | 7 lines Place holder ptrace mips module. Not entirely sure what's required here yet, so I've not connected it to the build. I think that we'll need to move something into the processor specific part of the mips port by requiring mips_cpu_ptrace or platform_cpu_ptrace be provided by the ports to get/set processor specific registers, ala SSE registers on x86.
r200342 | imp | 2009-12-09 18:42:44 -0700 (Wed, 09 Dec 2009) | 4 lines app_descriptor_addr is unused (I know it is referened still). And unnecessary since we pass in a3 unmodified to platform_start. Eliminate it from here and kill one more TARGET_OCTEON in the process.
r199760 | imp | 2009-11-24 10:15:22 -0700 (Tue, 24 Nov 2009) | 2 lines Add in Cavium's CID. Report what the unknown CID is.
r199755 | imp | 2009-11-24 09:53:58 -0700 (Tue, 24 Nov 2009) | 5 lines looks like there's more to this patch than just this one file. I'll leave it to neel@ to get all the relevant pieces into the tree.
r199754 | imp | 2009-11-24 09:32:31 -0700 (Tue, 24 Nov 2009) | 6 lines Include opt_cputype.h for all .c and .S files referencing TARGET_OCTEON. Spell ld script name right. # for the most part, we need to enhance infrastructure to obviate the need # for such an intrusive option.
r199753 | imp | 2009-11-24 09:30:29 -0700 (Tue, 24 Nov 2009) | 3 lines Remove a comment that's bogus. Include opt_cputype.h since TARGET_OCTEON moved there.
r199752 | imp | 2009-11-24 09:29:23 -0700 (Tue, 24 Nov 2009) | 4 lines Make sure kstack0 is page aligned. # this may have been from neel@ for the sibyte stuff
r199742 | imp | 2009-11-24 01:35:11 -0700 (Tue, 24 Nov 2009) | 8 lines Move the hard-wiring of the dcache on octeon outside of the if statement. When no caches support was added, it looks like TARGET_OCTEON was bogusly moved inside the if. Also, include opt_cputype.h to make TARGET_OCTEON actually active.
# now we die in pmap init somewhere... Most likely because 32MB of RAM is # too tight given the load address we're using.
r199741 | imp | 2009-11-24 01:21:48 -0700 (Tue, 24 Nov 2009) | 2 lines TARGET_OCTEON reqiures opt_cputype.h.
r199736 | imp | 2009-11-24 00:40:38 -0700 (Tue, 24 Nov 2009) | 2 lines Prefer ANSI spellings of uintXX_t, etc.
r199598 | imp | 2009-11-20 09:30:35 -0700 (Fri, 20 Nov 2009) | 3 lines Horrible kludge to make octeon32 work. I think a better way is to move the generic code into the config files....
r199597 | imp | 2009-11-20 09:27:50 -0700 (Fri, 20 Nov 2009) | 4 lines cast vaddr to uintptr_t before casting it to a bus_space_handle_t. # I'm sure this indicates a problem, but I'm not sure what...
r199496 | gonzo | 2009-11-18 15:52:05 -0700 (Wed, 18 Nov 2009) | 5 lines - Add cpu_init_interrupts function that is supposed to prepeare stuff required for spinning out interrupts later - Add API for managing intrcnt/intrnames arrays - Some minor style(9) fixes
r199246 | neel | 2009-11-13 02:24:09 -0700 (Fri, 13 Nov 2009) | 10 lines Make pmap_copy_page() L2-cache friendly by doing the copy through the cacheable window on physical memory (KSEG0). On the Sibyte processor going through the uncacheable window (KSEG1) bypasses both L1 and L2 caches so we may end up with stale contents in the L2 cache.
This also makes it consistent with the rest of the function that uses cacheable mappings to copy pages.
Approved by: imp (mentor)
r198842 | gonzo | 2009-11-02 23:42:55 -0700 (Mon, 02 Nov 2009) | 3 lines - Handle errors when adding children to nexus. This sittuation might occure when there is dublicate of child's entry in hints
r198669 | rrs | 2009-10-30 02:53:11 -0600 (Fri, 30 Oct 2009) | 5 lines With this commit our friend RMI will now compile. I have not tested it and the chances of it running yet are about ZERO.. but it will now compile. The hard part now begins, making it run ;-)
r198569 | neel | 2009-10-28 23:18:02 -0600 (Wed, 28 Oct 2009) | 5 lines Deal with overflow of the COUNT register correctly. The 'cycles_per_hz' has nothing to do with the rollover.
r198550 | imp | 2009-10-28 11:03:20 -0600 (Wed, 28 Oct 2009) | 3 lines Remove useless for statement. i isn't used after it. Remove needless braces.
r198534 | gonzo | 2009-10-27 21:34:05 -0600 (Tue, 27 Oct 2009) | 8 lines - Fix busdma sync: dcache invalidation operates on cache line aligned addresses and could modify areas of memory that share the same cache line at the beginning and at the ending of the buffer. In order to prevent a data loss we save these chunks in temporary buffer before invalidation and restore them afer it. Idea suggested by: cognet
r198531 | gonzo | 2009-10-27 18:01:20 -0600 (Tue, 27 Oct 2009) | 3 lines - Remove bunch of declared but not defined cach-related variables - Add mips_picache_linesize and mips_pdcache_linesize variables
r198530 | gonzo | 2009-10-27 17:45:48 -0600 (Tue, 27 Oct 2009) | 3 lines - Replace stubs with actual cache info - minor style(9) fix
r198355 | neel | 2009-10-21 22:35:32 -0600 (Wed, 21 Oct 2009) | 11 lines Remove redundant instructions from tlb.S The "_MTC0 v0, COP_0_TLB_HI" is actually incorrect because v0 has not been initialized at that point. It worked correctly because we subsequently did the right thing and initialized TLB_HI correctly. The "li v0, MIPS_KSEG0_START" is redundant because we do exactly the same thing 2 instructions down.
r198354 | neel | 2009-10-21 20:51:31 -0600 (Wed, 21 Oct 2009) | 9 lines Get rid of the hardcoded constants to define cacheable memory: SDRAM_ADDR_START, SDRAM_ADDR_END and SDRAM_MEM_SIZE Instead we now keep a copy of the memory regions enumerated by platform-specific code and use that to determine whether an address is cacheable or not.
r198310 | gonzo | 2009-10-20 17:13:08 -0600 (Tue, 20 Oct 2009) | 5 lines - Commit missing part of "bt" fix: store PC register in pcb_context struct in cpu_switch and use it in stack_trace function later. pcb_regs contains state of the process stored by exception handler and therefor is not valid for sleeping processes.
r198264 | neel | 2009-10-19 22:36:08 -0600 (Mon, 19 Oct 2009) | 5 lines Fix a bug where we would think that the L1 instruction and data cache are present even though the line size field in the CP0 Config1 register is 0.
r198208 | imp | 2009-10-18 09:21:48 -0600 (Sun, 18 Oct 2009) | 3 lines Get the PC from the trap frame, since it isn't saved as part of the pcb regs.
r198205 | imp | 2009-10-18 08:55:55 -0600 (Sun, 18 Oct 2009) | 3 lines Use correct signature for MipsEmulateBranch. The other one doesn't work for 64-bit compiles.
r198182 | gonzo | 2009-10-16 18:22:07 -0600 (Fri, 16 Oct 2009) | 11 lines - Use PC/RA/SP values as arguments for stacktrace_subr instead of trapframe. Context info could be obtained from other sources (see below) no only from td_pcb field - Do not show a0..a3 values unless they're obtained from the stack. These are only confirmed values. - Fix bt command in DDB. Previous implementation used thread's trapframe structure as a source info for trace unwinding, but this structure is filled only when exception occurs. Valid register values for sleeping processes are in pcb_context array. For curthread use pc/sp/ra for current frame
r198181 | gonzo | 2009-10-16 16:52:18 -0600 (Fri, 16 Oct 2009) | 2 lines - Get rid of label_t. It came from NetBSD and was used only in one place
r198066 | gonzo | 2009-10-13 19:43:53 -0600 (Tue, 13 Oct 2009) | 5 lines - Move stack tracing function to db_trace.c - Axe unused extern MipsXXX declarations - Move all declarations for functions in exceptions.S/swtch.S from trap.c to respective headers
r197796 | gonzo | 2009-10-05 17:19:51 -0600 (Mon, 05 Oct 2009) | 2 lines - Revert part of r197685 because this change leads to wrong data in cache.
r197685 | gonzo | 2009-10-01 14:05:36 -0600 (Thu, 01 Oct 2009) | 2 lines - Sync caches properly when dealing with sf_buf
r197014 | imp | 2009-09-08 21:57:10 -0600 (Tue, 08 Sep 2009) | 2 lines Ugly hack to get this to compile. I'm sure there's a better way...
r197013 | imp | 2009-09-08 21:54:55 -0600 (Tue, 08 Sep 2009) | 2 lines First half of making this 64-bit clean: fix prototypes.
r196988 | gonzo | 2009-09-08 13:15:29 -0600 (Tue, 08 Sep 2009) | 2 lines - MFC from head@196987
r196313 | imp | 2009-08-17 06:14:40 -0600 (Mon, 17 Aug 2009) | 2 lines suword64 and csuword64. Needed by ELF64 stuff...
r196266 | imp | 2009-08-15 16:51:11 -0600 (Sat, 15 Aug 2009) | 5 lines (1) Fix a few 32/64-bit bugs. (2) Also, always allocate 2 pages for the stack to optimize TLB usage. Submitted by: neel@ (2)
r196265 | imp | 2009-08-15 16:48:09 -0600 (Sat, 15 Aug 2009) | 2 lines Various 32/64-bit confusion cleanups.
r196264 | imp | 2009-08-15 16:45:46 -0600 (Sat, 15 Aug 2009) | 6 lines (1) Some CPUs have a range to map I/O cyces on the pci bus. So allow them to work by allowding the nexus to assign ports. (2) Remove some Octeon junk that shouldn't be necessary. Submitted by: neel@ (#1) for SB1 port.
r196061 | gonzo | 2009-08-04 11:32:55 -0600 (Tue, 04 Aug 2009) | 2 lines - Use register_t for registers values
r195984 | gonzo | 2009-07-30 17:48:29 -0600 (Thu, 30 Jul 2009) | 4 lines - Properly unwind stack for functions with __noreturn__ attribute Submitted by: Neelkanth Natu <neelnatu@yahoo.com>
r195983 | gonzo | 2009-07-30 17:29:59 -0600 (Thu, 30 Jul 2009) | 4 lines - mark map as coherent if requested by flags - explicitly set memory allocation method in map flags instead of duplicating conditions for malloc/contigalloc
r195584 | imp | 2009-07-10 13:09:34 -0600 (Fri, 10 Jul 2009) | 3 lines Use PTR_* macros for pointers, and not potentially mips64 unsafe operations.
r195583 | imp | 2009-07-10 13:08:48 -0600 (Fri, 10 Jul 2009) | 2 lines Use PTR_* macros to deal with pointers.
r195579 | imp | 2009-07-10 13:04:32 -0600 (Fri, 10 Jul 2009) | 2 lines use ta0-ta3 rather than t4-t7 for n32/n64 goodness.
r195511 | gonzo | 2009-07-09 13:02:17 -0600 (Thu, 09 Jul 2009) | 3 lines - Ooops, this debug code wasn't supposed to get into final commit. My appologises.
r195478 | gonzo | 2009-07-08 16:28:36 -0600 (Wed, 08 Jul 2009) | 5 lines - Port busdma code from FreeBSD/arm. This is more mature version that takes into account all limitation to DMA memory (boundaries, alignment) and implements bounce pages. - Add BUS_DMASYNC_POSTREAD case to bus_dmamap_sync_buf
r195438 | imp | 2009-07-08 00:00:18 -0600 (Wed, 08 Jul 2009) | 2 lines Turns out this code was right, revert last change.
r195429 | gonzo | 2009-07-07 13:55:09 -0600 (Tue, 07 Jul 2009) | 5 lines - Move dpcpu initialization to mips_proc0_init. It's more appropriate place for it. Besides dpcpu_init requires pmap module to be initialized and calling it int pmap.c hangs the system
r195399 | imp | 2009-07-06 01:49:24 -0600 (Mon, 06 Jul 2009) | 2 lines Prefer uintptr_t to int cast here.
r195398 | imp | 2009-07-06 01:48:31 -0600 (Mon, 06 Jul 2009) | 3 lines Better types for 64-bit compatibility. Use %p and cast to void * and prefer uintptr_t to other int-type casts.
r195397 | imp | 2009-07-06 01:47:39 -0600 (Mon, 06 Jul 2009) | 2 lines No need to force mips32 here.
r195396 | imp | 2009-07-06 01:46:13 -0600 (Mon, 06 Jul 2009) | 3 lines Pass in the uint64 value, rather than a pointer to it. that's what the function expects...
r195395 | imp | 2009-07-06 01:45:02 -0600 (Mon, 06 Jul 2009) | 3 lines Use ta0 instead of t4 and ta1 instead of t5. These map to the same registers on O32 builds, but t4 and t5 don't exist on N32 or N64.
r195394 | imp | 2009-07-06 01:43:50 -0600 (Mon, 06 Jul 2009) | 3 lines Use better casts for passing the small integer as a pointer here. Basically, replace int with uintptr_t.
r195393 | imp | 2009-07-06 01:42:54 -0600 (Mon, 06 Jul 2009) | 5 lines (1) Improvements for SB1. only allow real memory to be accessed. (2) make compile n64 by using more-proper casts. Submitted by: Neelkanth Natu (1)
r195373 | imp | 2009-07-05 09:23:54 -0600 (Sun, 05 Jul 2009) | 5 lines (1) Use PTR_LA rather than bare la for N64 goodness (it is dla there) (2) SB1 needs COHERENT policy, not cached for the config register Submitted by: (2) Neelkanth Natu
r195372 | imp | 2009-07-05 09:22:22 -0600 (Sun, 05 Jul 2009) | 3 lines use "PTR_LA" in preference to a bare la so it translates to dla on 64-bit ABIs.
r195371 | imp | 2009-07-05 09:21:35 -0600 (Sun, 05 Jul 2009) | 6 lines Now that we define atomic_{load,store}_64 inline in atomic.h, we don't need to define them here for the !N64 case. We now define atomic_readandclear_64 in atomic.h, so no need to repeat it here.
r195364 | imp | 2009-07-05 09:10:07 -0600 (Sun, 05 Jul 2009) | 5 lines use %p in preference to 0x%08x for printing register_t values. Cast them to void * first. This neatly solves the "how do I print a register_t" problem because sizeof(void *) is always the same as sizeof(register_t), afaik.
r195353 | imp | 2009-07-05 00:46:54 -0600 (Sun, 05 Jul 2009) | 6 lines Publish PAGE_SHIFT to assembler # we should likely phase out PGSHIFT Submitted by: Neelkanth Natu
r195350 | imp | 2009-07-05 00:39:37 -0600 (Sun, 05 Jul 2009) | 7 lines Switch to ABI agnostic ta0-ta3. Provide defs for this in the right places. Provide n32/n64 register name defintions. This should have no effect for the O32 builds that everybody else uses, but should help make N64 builds possible (lots of other changes are needed for that). Obtained from: NetBSD (for the regdef.h changes)
r195334 | imp | 2009-07-03 21:22:34 -0600 (Fri, 03 Jul 2009) | 6 lines Move from using the lame invalid address I chose when trying to get Octeon going... Turns out that you get tlb shutdowns with this... Use PGSHIFT instead of PAGE_SHIFT. Submitted by: Neelkanth Natu
r195147 | gonzo | 2009-06-28 15:01:00 -0600 (Sun, 28 Jun 2009) | 2 lines - Replace casuword and casuword32 stubs with proper implementation
r195128 | gonzo | 2009-06-27 17:27:41 -0600 (Sat, 27 Jun 2009) | 4 lines - Add support for handling TLS area address in kernel space. From the userland point of view get/set operations are performed using sysarch(2) call.
r195127 | gonzo | 2009-06-27 17:01:35 -0600 (Sat, 27 Jun 2009) | 4 lines - Make cpu_set_upcall_kse conform MIPS ABI. T9 should be the same as PC in subroutine entry point - Preserve interrupt mask
r194938 | gonzo | 2009-06-24 20:15:04 -0600 (Wed, 24 Jun 2009) | 3 lines - Invalidate cache in pmap_qenter. Fixes corruption of data that comes through pipe (may be other bugs)
r194505 | gonzo | 2009-06-19 13:02:40 -0600 (Fri, 19 Jun 2009) | 5 lines - Keep interrupts mask intact by RESTORE_CPU in MipsKernGenException trap() function re-enables interrupts if exception happened with interrupts enabled and therefor status register might be modified by interrupt filters
r194277 | gonzo | 2009-06-15 20:36:21 -0600 (Mon, 15 Jun 2009) | 2 lines - Remove debug printfs
r194275 | gonzo | 2009-06-15 19:43:33 -0600 (Mon, 15 Jun 2009) | 2 lines - Handle KSEG0/KSEG1 addresses for /dev/mem as well. netstat requires it
r193491 | gonzo | 2009-06-05 03:21:03 -0600 (Fri, 05 Jun 2009) | 6 lines - Status register should be set last in RESTORE_CPU in order to prevent race over k0, k1 registers. - Update interrupts mask in saved status register for MipsUserIntr and MipsUserGenException. It might be modified by intr filter or ithread.
r192864 | gonzo | 2009-05-26 16:40:12 -0600 (Tue, 26 May 2009) | 4 lines - Replace CPU_NOFPU and SOFTFLOAT options with CPU_FPU. By default we assume that there is no FPU, because majority of SoC does not have it.
r192794 | gonzo | 2009-05-26 00:20:50 -0600 (Tue, 26 May 2009) | 5 lines - Preserve INT_MASK fields in Status register across context switches. They should be modified only by interrupt setup/teardown and pre_ithread/post_ithread functions
r192793 | gonzo | 2009-05-26 00:02:38 -0600 (Tue, 26 May 2009) | 2 lines - Remove erroneus "break" instruction, it was meant for debug
r192792 | gonzo | 2009-05-26 00:01:17 -0600 (Tue, 26 May 2009) | 2 lines - Remove now unused NetBSDism intr.h
r192791 | gonzo | 2009-05-25 23:59:05 -0600 (Mon, 25 May 2009) | 7 lines - Provide proper pre_ithread/post_ithread functions for both hard and soft interrupts - Do not handle masked interrupts - Do not write Cause register because most bytes are read-only and writing the same byte to RW fields are pointless. And in case of software interrupt utterly wrong
r192664 | gonzo | 2009-05-23 13:42:23 -0600 (Sat, 23 May 2009) | 4 lines - cpu_establish_hardintr modifies INT_MASK of Status register, so we should use disableintr/restoreintr that modifies only IE bit.
r192655 | gonzo | 2009-05-23 12:00:20 -0600 (Sat, 23 May 2009) | 6 lines - Remove stale comments - Replace a1 with k1 to while restoring context. a1 was there by mistake, interrupts are disabled at this point and it's safe to use k0, k1. This code never was reached beacasue current Status register handling prevented interrupta from user mode.
r192496 | gonzo | 2009-05-20 17:07:10 -0600 (Wed, 20 May 2009) | 4 lines - Invalidate caches for respective areain KSEG0 in order to prevent further overwriting of KSEG1 data with writeback.
r192364 | gonzo | 2009-05-18 20:43:21 -0600 (Mon, 18 May 2009) | 6 lines - Cleanup ticker initialization code. For some MIPS cpu Counter register increments only every second cycle. The only timing references for us is Count value. Therefore it's better to convert frequencies related to it and use them. Besides cleanup this commit fixes twice more then requested sleep interval problem.
r192176 | gonzo | 2009-05-15 20:34:03 -0600 (Fri, 15 May 2009) | 3 lines - Add informational title for cache info lines to separate them from environment variables dump
r192119 | gonzo | 2009-05-14 15:26:07 -0600 (Thu, 14 May 2009) | 3 lines - Off by one check fix. Check for last address in region to fit in KSEG1
r191841 | gonzo | 2009-05-05 20:55:43 -0600 (Tue, 05 May 2009) | 5 lines - Use index ops in order to avoid TLBMiss exceptions when flushing caches on mapping removal - Writeback all VA for page that is being copied in pmap_copy_page to guaranty up-to-date data in SDRAM
r191613 | gonzo | 2009-04-27 20:59:18 -0600 (Mon, 27 Apr 2009) | 4 lines - When destroying va -> pa mapping writeback all caches or we may endup with partial page content in SDRAM - style(9) fix
r191583 | gonzo | 2009-04-27 12:46:57 -0600 (Mon, 27 Apr 2009) | 5 lines - Use new spacebus - Be a bit more verbose on failures - style(9) fixes - Use default rid value of 0 instead of MIPS_MEM_RID (0x20)
r191577 | gonzo | 2009-04-27 12:29:59 -0600 (Mon, 27 Apr 2009) | 4 lines - Use naming convention the same as MIPS spec does: eliminate _sel1 sufix and just use selector number. e.g. mips_rd_config_sel1 -> mips_rd_config1 - Add WatchHi/WatchLo accessors for selctors 1..3 (for debug purposes)
r191453 | gonzo | 2009-04-23 23:28:44 -0600 (Thu, 23 Apr 2009) | 4 lines Fix cut'n'paste code. cfg3 should get the value of selector 3 Spotted by: thompa@
r191452 | gonzo | 2009-04-23 22:18:16 -0600 (Thu, 23 Apr 2009) | 2 lines - Print supported CPU capabilities during stratup
r191448 | gonzo | 2009-04-23 21:38:51 -0600 (Thu, 23 Apr 2009) | 2 lines - Fix whitespace to conform style(9)
r191282 | gonzo | 2009-04-19 16:02:14 -0600 (Sun, 19 Apr 2009) | 3 lines - Make mips_bus_space_generic be of type bus_space_tag_t instead of struct bus_space and update all relevant places.
r191084 | gonzo | 2009-04-14 20:28:26 -0600 (Tue, 14 Apr 2009) | 6 lines Use FreeBSD/arm approach for handling bus space access: space tag is a pointer to bus_space structure that defines access methods and hence every bus can define own accessors. Default space is mips_bus_space_generic. It's a simple interface to physical memory, values are read with regard to host system byte order.
r191083 | gonzo | 2009-04-14 19:47:52 -0600 (Tue, 14 Apr 2009) | 4 lines - Cleanout stale #ifdef'ed chunk of code - Fix whitespaces - Explicitly undefine NEXUS_DEBUG flag
r191079 | gonzo | 2009-04-14 16:53:22 -0600 (Tue, 14 Apr 2009) | 2 lines - Revert changes accidentally killed by merge operation
------------------------------------------------------------------------ r187512 | gonzo | 2009-01-20 22:49:30 -0700 (Tue, 20 Jan 2009) | 4 lines - Check if maddr/msize hints are there before setting hinted resources to device - Check for irq hint too
r187418 | gonzo | 2009-01-18 19:37:10 -0700 (Sun, 18 Jan 2009) | 4 lines - Add trampoline stuff for bootloaders that do not support ELF - Replace arm'ish KERNPHYSADDR/KERNVIRTADDR with KERNLOADADDR/TRAMPLOADADDR and clean configs
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199868 |
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27-Nov-2009 |
alc |
Simplify the invocation of vm_fault(). Specifically, eliminate the flag VM_FAULT_DIRTY. The information provided by this flag can be trivially inferred by vm_fault().
Discussed with: kib
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199135 |
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10-Nov-2009 |
kib |
Extract the code that records syscall results in the frame into MD function cpu_set_syscall_retval().
Suggested by: marcel Reviewed by: marcel, davidxu PowerPC, ARM, ia64 changes: marcel Sparc64 tested and reviewed by: marius, also sunv reviewed MIPS tested by: gonzo MFC after: 1 month
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183428 |
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28-Sep-2008 |
imp |
Fix comments to relate to FreeBSD's current interrupt blocking functionality, as opposed to the legacy spl means.
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179648 |
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08-Jun-2008 |
wkoszek |
Fix spelling of "virtual".
There should be no visible change.
Reviewed by: rink
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178172 |
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13-Apr-2008 |
imp |
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing.
This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming...
Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser.
In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
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