Commit Graph

1976 Commits

Author SHA1 Message Date
Pawel Dziepak
8614737f71 elf: restore correct region protection after relocation 2013-04-16 03:44:38 +02:00
Pawel Dziepak
87d1bdb87c util: add secure pseudorandom number generator 2013-04-11 12:31:58 +02:00
Pawel Dziepak
69042ecd1b util: style fixes 2013-04-11 12:15:47 +02:00
Pawel Dziepak
6003243ef3 util: introduce kernel utils for pseudorandom number generation
Currently there are two generators. The fast one is the same one the scheduler
is using. The standard one is the same algorithm libroot's rand() uses. Should
there be a need for more cryptographically PRNG MD4 or MD5 might be a good
candidates.
2013-04-11 04:34:59 +02:00
Pawel Dziepak
a8f8d2c057 x86_64: put user stack and team data at top of user address space 2013-04-04 20:54:56 +02:00
Pawel Dziepak
f697412ff8 vm: place commpage and team data near the top of user address space
Placing commpage and team user data somewhere at the top of the user accessible
virtual address space prevents these areas from conflicting with elf images
that require to be mapped at exact address (in most cases: runtime_loader).
2013-04-04 15:27:24 +02:00
Pawel Dziepak
e85e399fd7 commpage: randomize position of commpage
This patch introduces randomization of commpage position. From now on commpage
table contains offsets from begining to of the commpage to the particular
commpage entry. Similary addresses of symbols in ELF memory image "commpage"
are just offsets from the begining of the commpage.

This patch also updates KDL so that commpage entries are recognized and shown
correctly in stack trace. An update of Debugger is yet to be done.
2013-04-04 15:27:22 +02:00
Pawel Dziepak
966f207668 x86: enable data execution prevention
Set execute disable bit for any page that belongs to area with neither
B_EXECUTE_AREA nor B_KERNEL_EXECUTE_AREA set.

In order to take advanage of NX bit in 32 bit protected mode PAE must be
enabled. Thus, from now on it is also enabled when the CPU supports NX bit.

vm_page_fault() takes additional argument which indicates whether page fault
was caused by an illegal instruction fetch.
2013-04-04 15:22:23 +02:00
Alex Smith
5e0c3db286 Account for the physical map area in the kernel VM space. Fixes #9547.
The physical memory map area was not included in the kernel virtual
address space range (it was below KERNEL_BASE). This caused problems
if an I/O operation took place on physical memory mapped there (the
bad address error seen in #9547 was occurring in lock_memory_etc()).
Changed KERNEL_BASE and KERNEL_SIZE to cover the area and add a null
area that covers all of it. Also changed X86VMTranslationMap64Bit to
handle large pages in Query(), as the physical map area uses large
pages.
2013-03-22 18:30:01 +00:00
Pawel Dziepak
7f61e6e4e5 Merge branch 'nfs4'
Conflicts:
	build/jam/HaikuImage
2013-03-11 13:00:55 +01:00
Hamish Morrison
d1f280c805 Add support for pthread_attr_get/setguardsize()
* Added the aforementioned functions.
* create_area_etc() now takes a guard size parameter.
* The thread_info::stack_base/end range now refers to the usable range
  only.
2012-12-28 18:02:58 +00:00
Michael Lotz
fd6e3a11e2 Use the existing ARM MMU definitions and remove duplicates. 2012-12-04 23:38:06 +01:00
Michael Lotz
50c463f4f1 Header cleanup, rename macros for more consistency. 2012-12-04 23:38:03 +01:00
Michael Lotz
57e6aff3f7 Add debug helpers that communicate information via the LED.
Blink patterns and delay mechanisms allow for "easier" debugging using
just the onboard LED on the raspberry pi.
2012-11-27 20:58:31 +01:00
Michael Lotz
4818400fcf Add BCM2708 mailbox definitions and implementation.
The mailbox is used to communicate with the VideoCore on the rPi for
various tasks. First it will be used to configure the framebuffer.
2012-11-27 20:58:30 +01:00
André Hentschel
a8fe6dad7e Fix header protection for the beagle board 2012-11-26 17:59:53 +01:00
Alex Smith
11c9f9a1d6 Merge branch 'master' into x86_64
Conflicts:
	build/jam/FloppyBootImage
	build/jam/OptionalBuildFeatures
	build/jam/OptionalPackages
	headers/private/shared/cpu_type.h
	src/bin/ps.c
	src/bin/sysinfo.cpp
	src/kits/tracker/PoseView.cpp
	src/preferences/appearance/DecorSettingsView.cpp
	src/preferences/virtualmemory/Settings.cpp
	src/servers/input/AddOnManager.cpp
	src/servers/input/InputServer.cpp
	src/servers/input/InputServerMethod.cpp
	src/system/boot/Jamfile
	src/system/boot/platform/raspberrypi_arm/mmu.cpp
	src/system/boot/platform/u-boot/arch/arm/Jamfile
	src/system/kernel/arch/x86/arch_cpu.cpp
	src/system/kernel/arch/x86/arch_thread.cpp
	src/system/kernel/cache/block_cache.cpp
	src/system/kernel/vm/VMAnonymousCache.cpp
2012-11-18 14:02:07 +00:00
Ithamar R. Adema
344b3218d4 ARM/u-boot: Add support for FDTs passed in the uImage
Since we're using multi-part uImage format, we can add the FDT as
a seperate "blob" in the uImage, if the used U-Boot version is not
"FDT enabled".

This is used for example for our Verdex target. Currently I've got
a local hack in the platform/u-boot/Jamfile, looking into pulling
in the FDT files and a proper Jam setup to do that properly...
2012-11-13 12:27:11 +01:00
Ithamar R. Adema
1df5784a22 ARM: Add ARM architecture detection to generic bootloader ARM code.
This detects everything up to ARMv6 right now. Need to check more
recent ARM ARMs for ARMv7 detection.

The detected details get passed on to the kernel, which can use
the pre-detected info for selecting right pagetable format and such.

Copyright removal of Axel done after agreement with Axel @ BeGeistert
that for files that were copy/pasted from x86 arch and then fully
replaced the implementation, removal of original copyright holder is
allowed, since their actual code is gone ;)
2012-11-13 12:04:35 +01:00
Ithamar R. Adema
36b41db7aa Merge common ARM CPU/MMU code
This is to make sure all ARM platforms will benefit from planned work on this
MMU/CPU code. The less code duplicated, the better.

Compile-tested for all supported ARM platforms
2012-11-10 03:03:24 +01:00
Ithamar R. Adema
f86b582848 ARM: Cleanup of port support code.
This also implements the fault handler correctly now, and cleans up the
exception handling. Seems a lot more stable now, no unexpected panics or
faults happening anymore.
2012-11-07 16:24:22 +01:00
Axel Dörfler
adf340f0ed Style cleanup. 2012-10-08 13:59:16 +02:00
Axel Dörfler
9b9cb227c7 Consolidated and fixed device_geometry computation.
* The only implementation that would accept more than 2 TB was the one in
  scsi_disk. But even that one was limited to 63 TB.
* Now there is a new utility function devfs_compute_geometry_size() which
  does it correctly for sizes up to 2^64 which should be good enough for
  quite some time :-)
* This fixes bug #8992.
2012-10-08 13:59:16 +02:00
Yongcong Du
19187c464b x86: Initialize IA32_MSR_ENERGY_PERF_BIAS
The lowest 4 bits of the MSR serves as a hint to the hardware to
favor performance or energy saving. 0 means a hint preference for
highest performance while 15 corresponds to the maximum energy
savings. A value of 7 translates into a hint to balance performance
with energy savings.

The default reset value of the MSR is 0. If BIOS doesn't intialize
the MSR, the hardware will run in performance state. This patch
initialize the MSR with value of 7 for balance between performance
and energy savings

Signed-off-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
2012-08-29 22:11:56 +02:00
Alex Smith
d2a1be1c4e Cleaner separation of 32-/64-bit specific CPU/interrupt code.
Renamed {32,64}/int.cpp to {32,64}/descriptors.cpp, which now contain
functions for GDT and TSS setup that were previously in arch_cpu.cpp,
as well as the IDT setup code. These get called from the init functions
in arch_cpu.cpp, rather than having a bunch of ifdef'd chunks of code
for 32/64.
2012-08-18 17:43:40 +01:00
Alex Smith
9f629ef38e Rename KERNEL_LOAD_BASE_64BIT to KERNEL_LOAD_BASE_64_BIT for consistency. 2012-08-17 15:16:25 +01:00
Pawel Dziepak
1fdcaccf17 AVLTreeMap::MakeEmpty should set fTree.fRoot to NULL 2012-08-10 00:01:15 +02:00
Alex Smith
8a1903353e Implemented user debugging support for x86_64.
Reused x86 arch_user_debugger.cpp, with a few minor changes to make
the code work for both 32 and 64 bit. Something isn't quite working
right, if a breakpoint is hit the kernel will hang. Other than that
everything appears to work correctly.
2012-08-07 20:20:42 +01:00
Alex Smith
cc30eec43d System call restart support. 2012-08-05 14:20:37 +01:00
Alex Smith
25871c6895 Removed Thread::fault_callback, no longer necessary now that vm86 is gone. 2012-08-04 11:02:54 +01:00
Alex Smith
74bda98cb2 Killed off vm86 code, no longer being used. 2012-08-03 16:49:15 +01:00
Alex Smith
d93ed09564 Improved safety for user memory accesses.
* Changed IS_USER_ADDRESS to check an address using USER_BASE and
  USER_SIZE, rather than just !IS_KERNEL_ADDRESS. The old check would
  allow user buffers to point into the physical memory map area.
* Added an unmapped hole at the end of the bottom half of the address
  space which catches buffers that cross into the uncanonical address
  region. This also removes the need to check for uncanonical return
  addresses in the syscall handler, it is no longer possible for the
  return address to be uncanonical under normal circumstances. All
  cases in which the return address might be changed by the kernel
  are still handled via the IRET path.
2012-08-02 09:32:33 +01:00
Alex Smith
c0d28c0199 Implemented signals for x86_64. 2012-07-30 13:52:51 +01:00
Alex Smith
6e2f6d1ace Changed cookie type for get_next_area_info() to ssize_t.
The cookie is used to store the base address of the area that was just
visited. On 64-bit systems, int32 is not sufficient. Therefore, changed
to ssize_t which retains compatibility on x86 while expanding to a
sufficient size on x86_64.
2012-07-29 09:31:14 +01:00
Alex Smith
370ab57d49 Initial userland support for x86_64.
Userland switch is implemented, as is basic system call support (using
SYSCALL/SYSRET). The system call handler is not yet complete: it doesn't
handle more than 6 arguments, and does not perform all the necessary kernel
entry/exit work (neither does the interrupt handler). However, this is
sufficient for runtime_loader to start and print some debug output.
2012-07-23 17:12:12 +01:00
Alex Smith
195a0f350e Changed argument type of fcntl syscall from uint32 to size_t.
Since this argument may be used to pass pointers, uint32 is not
correct for 64-bit. Effectively no change on 32-bit targets, both
size_t and uint32 are unsigned long there.
2012-07-21 14:33:27 +01:00
Alex Smith
6497f6b1ec Moved the exception handling functions to arch_int.cpp, shared between x86 and x86_64. 2012-07-21 09:11:09 +01:00
Alex Smith
1b41387b5f Added missing packed attributes on disk_identifier. 2012-07-20 17:14:17 +01:00
Alex Smith
bcb07a319b Implemented the rest of the kernel debugger functions for x86_64.
Merged with the x86 implementations, mostly the same except for a
few differences. GDB stub is currently broken, will investigate
later.
2012-07-13 14:09:09 +01:00
Alex Smith
4ebc6dfa68 Moved some 32-bit specific stuff to the 32 subdirectory. 2012-07-12 14:23:55 +01:00
Alex Smith
d38f1301d1 Cleaned up 32-bit descriptors.h. 2012-07-12 13:55:03 +01:00
Alex Smith
76a1175dbe Support for SMP on x86_64.
No major changes to the kernel: just compiled in arch_smp.cpp and fixed the
IDT load in arch_cpu_init_percpu to use the correct limit for x86_64 (uses
sizeof(interrupt_descriptor)). In the boot loader, changed smp_boot_other_cpus
to construct a temporary GDT and get the page directory address from CR3, as
what's in kernel_args will be 64-bit stuff and will not work to switch the
CPUs into 32-bit mode in the trampoline code. Refactored 64-bit kernel entry
code to not use the stack after disabling paging, as the secondary CPUs are
given a 32-bit virtual stack address by the SMP trampoline code which will
no longer work.
2012-07-11 18:29:15 +01:00
Alex Smith
5670b0a8e4 Moved the 32-bit page fault handler to arch_int.cpp, use it for x86_64.
A proper page fault handler was required for areas that were not locked
into the kernel address space. This enables the boot process to get
up to the point of trying to find the boot volume.
2012-07-09 19:18:09 +01:00
Alex Smith
b5c9d24abc Implemented threading for x86_64.
* Thread creation and switching is working fine, however threads do not yet
  get interrupted because I've not implemented hardware interrupt handling
  yet (I'll do that next).
* I've made some changes to struct iframe: I've removed the e/r prefixes
  from the member names for both 32/64, so now they're just named ip, ax,
  bp, etc. This makes it easier to write code that works with both 32/64
  without having to deal with different iframe member names.
2012-07-09 16:43:01 +01:00
Alex Smith
5e9bb17da7 Renamed remaining i386_* functions to x86_* for consistency. 2012-07-09 12:14:18 +01:00
Alex Smith
3b802628b8 Support ELF64 in the kernel.
This has been done by adding typedefs in elf_common.h to the correct ELF
structures for the architecture, and changing all Elf32_* uses to those
types. I don't know whether image loading works as I cannot test it yet,
there may be some 64-bit safety issues around. However, symbol lookup for
the kernel is working correctly.
2012-07-09 11:11:38 +01:00
Alex Smith
5c7d52183c Implemented system_time() for x86_64.
* Uses 64-bit multiplication, special handling for CPUs clocked < 1 GHz
  in system_time_nsecs() not required like on x86.
* Tested against a straight conversion of the x86 version, noticably
  faster with a large number of system_time() calls.
2012-07-08 10:16:44 +01:00
Alex Smith
15feb60325 A few improvements suggested by Ingo. 2012-07-06 14:34:50 +01:00
Alex Smith
84bf29f97b Compile in arch_platform.cpp for x86_64. The apm_init call is disabled for x86_64, APM is 32-bit only. 2012-07-06 14:17:48 +01:00
Alex Smith
950b24e32d Begun work on VMTranslationMap implementation for x86_64.
* Added empty source files for all the 64-bit paging method code, and a
  stub implementation of X86PagingMethod64Bit.
* arch_vm_translation_map.cpp has been modified to use X86PagingMethod64Bit
  on x86_64.
2012-07-04 17:08:44 +01:00