Decode the various kinds of system instructions:
hints (HINT), which include NOP, YIELD, WFE, WFI, SEV, SEL
sync instructions, which include CLREX, DSB, DMB, ISB
msr_i, which move immediate to processor state field
sys, which include all SYS and SYSL instructions
msr, which move from a gp register to a system register
mrs, which move from a system register to a gp register
Provide implementations where they are trivial nops.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Provide a skeleton for a64 instruction decoding in translate-a64.c,
by dividing instructions into the classes defined by the
ARM Architecture Reference Manual(DDI0487A_a) section C3.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
We will need helpers that only make sense with AArch64. Add
helper-a64.{c,h} files as stubs that we can fill with these
helpers in the following patches.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Register the aarch64-fpu XML and implement the necessary
read/write handlers so we can support reading and writing
of FP registers in the gdb stub.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The information which AArch32 holds in the FPSCR is split for
AArch64 into two logically distinct registers, FPSR and FPCR.
Since they are carefully arranged to use non-overlapping bits,
we leave the underlying state in the same place, and provide
accessor functions which just update the appropriate bits
via vfp_get_fpscr() and vfp_set_fpscr().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
When executing translation blocks we need to be able to recover
our program counter. Add a method to set it for AArch64 CPUs.
This covers user-mode, but for system mode emulation we will
need to check if the CPU is in an AArch32 execution state.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The A32/T32 gen_intermediate_code_internal() is complicated because it
has to deal with:
* conditionally executed instructions
* Thumb IT blocks
* kernel helper page
* M profile exception-exit special casing
None of these apply to A64, so putting the "this is A64 so
call the A64 decoder" check in the middle of the A32/T32
loop is confusing and means the A64 decoder's handling of
things like conditional jump and singlestepping has to take
account of the conditional-execution jumps the main loop
might emit.
Refactor the code to give A64 its own gen_intermediate_code_internal
function instead.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add a config for aarch64-softmmu; this enables building of this target.
The resulting executable doesn't know about any 64 bit CPUs, but all
the 32 bit CPUs and board models work.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-8-git-send-email-peter.maydell@linaro.org
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
This commit adds support for booting a single AArch64 CPU by setting
appropriate registers. The bootloader includes placeholders for Board-ID
that are used to implement uniform indexing across different bootloaders.
Signed-off-by: Mian M. Hamayun <m.hamayun@virtualopensystems.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-7-git-send-email-peter.maydell@linaro.org
[PMM:
* updated to use ARMInsnFixup style bootloader fragments
* dropped virt.c additions
* use runtime checks for "is this an AArch64 core" rather than ifdefs
* drop some unnecessary setting of registers in reset hook
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
For AArch64 we will obviously require a different set of
primary and secondary boot loader code fragments. However currently
we hardcode the offsets into the loader code where we must write
the entrypoint and other data into arm_load_kernel(). This makes it
hard to substitute a different loader fragment, so switch to a more
flexible scheme where instead of a raw array of instructions we use
an array of (instruction, fixup-type) pairs that indicate which
words need special action or data written into them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-6-git-send-email-peter.maydell@linaro.org
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Enable KVM if the host and target CPU are both aarch64. Note
that host aarch64 + target arm is not valid for KVM acceleration:
the 64 bit kernel does not support the ioctl interface for
32 bit CPUs. 32 bit VMs on 64 bit hosts need to be created
using the 64 bit ioctl interface; when QEMU supports this it
will be on the arch64-softmmu target with a -cpu parameter for
a 32 bit CPU, which is still an aarch64/aarch64 combination
as far as configure is concerned.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-5-git-send-email-peter.maydell@linaro.org
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Add the bare minimum set of functions needed for control of an
AArch64 KVM vcpu:
* CPU initialization
* minimal get/put register functions which only handle the
basic state of the CPU
Signed-off-by: Mian M. Hamayun <m.hamayun@virtualopensystems.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-4-git-send-email-peter.maydell@linaro.org
[PMM: significantly overhauled; most notably:
* code lives in kvm64.c rather than using #ifdefs
* support '-cpu host' rather than implicitly using whatever the
host's CPU is regardless of what the user requests
* fix bug attempting to get/set nonexistent X[31]
* fix bug writing 64 bit kernel pstate into uint32_t env field
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
The env->pstate field is a little odd since it doesn't strictly
speaking represent an architectural register. However it's convenient
for QEMU to use it to hold the various PSTATE architectural bits
in the same format the architecture specifies for SPSR registers
(since this is the same format the kernel uses for signal handlers
and the KVM register). Add some structure to how we deal with it:
* document what env->pstate is
* add some #defines for various bits in it
* add helpers for reading/writing it taking account of caching
of NZCV, and use them where appropriate
* reset it on startup
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-3-git-send-email-peter.maydell@linaro.org
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Split ARM KVM support code which is 32 bit specific out into its
own file, which we only compile on 32 bit hosts. This will give
us a place to add the 64 bit support code without adding lots of
ifdefs to kvm.c.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-2-git-send-email-peter.maydell@linaro.org
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
If hivecs are being used on reset, the CPU should come out of reset at
the hivecs reset vector (0xFFFF0000)
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 3afc69c4f58f60aa2bbee7b91574a4eb414b1c23.1387160489.git.peter.crosthwaite@xilinx.com
[ PC Changes:
* Fixed Grammar error in commit message
* Elaborated commit message.
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add an ARM CPU property for the reset value of hivecs as it is a
board/SoC configurable setting.
The existence of the property is conditional on the ARM CPU not being M
class.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: b04216c6bda4bd163f44a55bba552d0e8267481f.1387160489.git.peter.crosthwaite@xilinx.com
[ PC Changes:
* Elaborated commit message
* refactored to use qdev_property_add_static
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
GIC_BASE_ADDR is not the base address of the GIC. Its clear from the
code that this is the base address of the MPCore. Rename to
MPCORE_PERIPHBASE accordingly.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 90798bd3507205c16238b8b19a1a58c5437cf7ca.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix the CBAR initialisation by using the newly defined static property.
Zynq will now correctly init the CBAR to the SCU base address.
Needed to boot Linux on the xilinx_zynq machine model.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 8db7d57ebe5418fed397fcc86ea719f98446c178.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To allow the machine model to set device properties before CPU
realization.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: e57658b4506b26ab6b6fadbe6d7827f669f51895.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix the CBAR initialisation by using the newly defined static property.
CBAR is now set before realization, so the intended value is now
actually used.
So I have kind of tested this. I booted an ARM kernel on Highbank with
the stock Highbank DTB. It doesn't boot (and I will be doing something
wrong), but before this patch I got this:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at /workspaces/pcrost/public/linux2.git/arch/arm/mm/ioremap.c:301 __arm_ioremap_pfn_caller+0x180/0x198()
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.13.0-rc1-next-20131126-dirty #2
[<c0015164>] (unwind_backtrace) from [<c00118c0>] (show_stack+0x10/0x14)
[<c00118c0>] (show_stack) from [<c02bd5fc>] (dump_stack+0x78/0x90)
[<c02bd5fc>] (dump_stack) from [<c001f110>] (warn_slowpath_common+0x68/0x84)
[<c001f110>] (warn_slowpath_common) from [<c001f1f4>] (warn_slowpath_null+0x1c/0x24)
[<c001f1f4>] (warn_slowpath_null) from [<c0017c6c>] (__arm_ioremap_pfn_caller+0x180/0x198)
[<c0017c6c>] (__arm_ioremap_pfn_caller) from [<c0017cd8>] (__arm_ioremap_caller+0x54/0x5c)
[<c0017cd8>] (__arm_ioremap_caller) from [<c0017d10>] (__arm_ioremap+0x18/0x1c)
[<c0017d10>] (__arm_ioremap) from [<c03913c0>] (highbank_init_irq+0x34/0x8c)
[<c03913c0>] (highbank_init_irq) from [<c038c228>] (init_IRQ+0x28/0x2c)
[<c038c228>] (init_IRQ) from [<c03899ec>] (start_kernel+0x234/0x398)
[<c03899ec>] (start_kernel) from [<00008074>] (0x8074)
---[ end trace 3406ff24bd97382f ]---
Which disappears with this patch.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: fedec366aaa512d75093635f523d1dbcb3358361.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To allow the machine model to set device properties before CPU
realization.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 8c671e500390c8be0cc363e887e32867d1d1b0d2.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The reset value of the CP15 CBAR is a vendor (machine) configurable
property. If ARM_FEATURE_CBAR is set, add it as a property at
post_init time.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 2f1eec3f912135deea6252360e03645003d12e0a.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some processors (notably A9 within Highbank) define and use the
CP15 configuration base address (CBAR). This is vendor specific
so its best implemented as a CPU property (otherwise we would need
vendor specific child classes for every ARM implementation).
This patch prepares support for converting CBAR reset value to
a CPU property by moving the CP registration out of the CPU
init fn, as registration will need to happen at realize time
to pick up any property updates. The easiest way to do this
is via definition of a new ARM_FEATURE to flag the existence
of the register.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 9f697ef1e2ee60a3b9ef971a7f3bc3fa6752a9b7.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The cp15.c15 space is implementation defined. Currently there is a
dummy placeholder register RAZing it. Allow overriding of this RAZ
so implementations of specific registers can take precedence.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: ed1bacec56dae00cb398c798f8240e8e685f949c.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix NOR flash manufacturer and device ID reading. This now
properly takes into account device widths and device max widths
as required. The reading of these IDs uses the same max_width
dependent addressing as CFI queries.
The old code remains for chips that don't specify a device width,
as the new code relies on a device width being set in order to
properly operate. The existing code seems very broken.
Only ident0 and ident1 are used in the new code, as other fields
relate to the lock state of blocks in flash.
The VExpress flash configuration has been updated to match
the new code, as the existing definition was 'wrong' in order
to return the expected results with the broken device ID code.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Message-id: 1386279359-32286-8-git-send-email-roy.franz@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This change fixes the CFI query responses to handle NOR device
widths that are different from the bank width. Support is also
added for multi-width devices in a x8 configuration. This is
typically x8/x16 devices, but the CFI specification mentions
x8/x32 devices so those should be supported as well if they
exist.
The query response data is now replicated per-device in the bank,
and is adjusted for x16 or x32 parts configured in x8 mode.
The existing code is left in place for boards that have not
been updated to specify an explicit device_width. The VExpress
board has been updated in an earlier patch in this series so
this is the only board currently affected.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Message-id: 1386279359-32286-7-git-send-email-roy.franz@linaro.org
[PMM: fixed a few formatting nits]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For handling CFI and device ID reads, we need to not only know the
width that a NOR flash device is configured for, but also its maximum
width. The maximum width addressing mode is used for multi-width
parts no matter which width they are configured for. The most common
case is x16 parts that also support x8 mode. When configured for x8
operation these devices respond to CFI and device ID requests differently
than native x8 NOR parts.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Message-id: 1386279359-32286-6-git-send-email-roy.franz@linaro.org
[PMM: Added comment explaining the semantics of width vs device-width
vs max-device-width]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Create vexpress specific pflash registration
function which properly configures the device-width
of 16 bits (2 bytes) for the NOR flash on the
vexpress platform. This change is required for
buffered flash writes to work properly.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Message-id: 1386279359-32286-5-git-send-email-roy.franz@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Now that we know how wide each flash device that makes up the bank is,
return status for each device in the bank. Leave existing code
that treats 32 bit wide banks as composed of two 16 bit devices as otherwise
we may break configurations that do not set the device_width propery.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Message-id: 1386279359-32286-4-git-send-email-roy.franz@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The width of the devices that make up the flash interface
is required to mask certain commands, in particular the
write length for buffered writes. This length will be presented
to each device on the interface by the program writing the flash,
and the flash emulation code needs to be able to determine
the length of the write as recieved by each flash device.
The device-width defaults to the bank width which should
maintain existing behavior for platforms that don't need
this change.
This change is required to support buffered writes on the
vexpress platform that has a 32 bit flash interface with 2
16 bit devices on it.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Message-id: 1386279359-32286-3-git-send-email-roy.franz@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Rename the 'width' member of the pflash_t structure
in preparation for adding a bank_width member.
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1386279359-32286-2-git-send-email-roy.franz@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds support for the AESE/AESD/AESMC/AESIMC instructions that
are available on some v8 implementations of Aarch32.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 1386266078-6976-1-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
qemu_opts_parse() can always return NULL, even if the QemuOptsList.desc in
question would be trivial to satisfy (eg. because it's empty). For
example:
qemu_opts_parse()
opts_parse()
qemu_opts_create()
id_wellformed()
In practice:
$ .../qemu-system-x86_64 -acpitable id=3
qemu-system-x86_64: -acpitable id=3: Parameter 'id' expects an identifier
**
ERROR:vl.c:3491:main: assertion failed: (opts != NULL)
Aborted (core dumped)
$ .../qemu-system-x86_64 -smbios id=3
qemu-system-x86_64: -smbios id=3: Parameter 'id' expects an identifier
Segmentation fault (core dumped)
I checked all qemu_opts_parse() invocations (and all drive_def()
invocations too, because it blindly forwards the former's retval). Only
the two above examples look problematic.
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1385658779-7529-1-git-send-email-lersek@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
nbd patches in preparation of spice-nbd.
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Merge remote-tracking branch 'spice/tags/pull-spice-1' into staging
Collection of little cleanups anf bugfixes.
nbd patches in preparation of spice-nbd.
# gpg: Signature made Mon 16 Dec 2013 01:27:45 AM PST using RSA key ID D3E87138
# gpg: Can't check signature: public key not found
# By Marc-André Lureau (12) and Gerd Hoffmann (4)
# Via Gerd Hoffmann
* spice/tags/pull-spice-1:
spice: stop server for qxl hard reset
spice: move spice_server_vm_{start,stop} calls into qemu_spice_display_*()
spice: move qemu_spice_display_*() from spice-graphics to spice-core
nbd: avoid uninitialized warnings
nbd: finish any pending coroutine
nbd: make nbd_client_session_close() idempotent
nbd: pass export name as init argument
nbd: don't change socket block during negotiate
Split nbd block client code
spice-char: implement chardev port event
char: add qemu_chr_fe_event()
include: add missing config-host.h include
qmp_change_blockdev() remove unused has_format
spice-char: remove unused field
vscclient: do not add a socket watch if there is not data to send
spice: flip streaming video mode to off by default
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-----END PGP SIGNATURE-----
Merge remote-tracking branch 'kwolf/tags/for-anthony' into staging
Block patches
# gpg: Signature made Fri 13 Dec 2013 09:47:03 AM PST using RSA key ID C88F2FD6
# gpg: Can't check signature: public key not found
# By Peter Lieven (2) and others
# Via Kevin Wolf
* kwolf/tags/for-anthony:
blkdebug: Use QLIST_FOREACH_SAFE to resume IO
qemu-img: make progress output more accurate during convert
block: expect get_block_status errors in bdrv_make_zero
block/vvfat: Fix compiler warnings for OpenBSD
qapi-schema.json: Change 1.8 reference to 2.0
sheepdog: check if '-o redundancy' is passed from user
Message-id: 1386956943-19474-1-git-send-email-kwolf@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
Hard reset can happen at any time. We should be able to put qxl into a
known-good state no matter what. Stop spice server thread for reset so
it can't be confused by fetching stale commands lingering around in the
rings while we reset is ongoing.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Make sure all pending coroutines are finished when closing the session.
Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
There is no need to keep the export name around, and it seems a better
fit as an argument in the init() call.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The caller might handle non-blocking using coroutine. Leave the choice
to the caller to use a blocking or non-blocking negotiate.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Teach the chardev frontend to send event. This is used by the Spice port
chardev currently.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Claudio Fontana