Add the MDCR_EL2 register. We don't implement any of
the debug-related traps this register controls yet, so
currently it simply reads back as written.
Backports commit 14cc7b54372995a6ba72c7719372e4f710fc9b5a from qemu
Added oslar_write function to OSLAR_EL1 sysreg, using a status variable
in ARMCPUState.cp15 struct (oslsr_el1). This variable is also linked
to the newly added read-only OSLSR_EL1 register.
Linux reads from this register during its suspend/resume procedure.
Backports commit 1424ca8d4320427c3e93722b65e19077969808a2 from qemu
It is incorrect to call arm_el_is_aa64() function for unimplemented EL.
This patch fixes several attempts to do so.
Backports commit 2cde031f5a34996bab32571a26b1a6bcf3e5b5d9 from qemu
The only generic code relying on this is linux-user. Linux user
already has a lot of #ifdef TARGET_ customisation so instead, define
ELF_ARCH as either EM_ARM or EM_AARCH64 appropriately.
The armv7m bootloader can just pass EM_ARM directly, as that
is architecture specific code. Note that arm_boot already has its own
logic selecting an arm specific elf machine so this makes V7M more
consistent with arm_boot.
This removes another architecture specific definition from the global
namespace.
Backports commit b597c3f7da17fcb37d394a16a6c0ef0a02846177 from qemu
This is set to true when the index is for an instruction fetch
translation.
The core get_page_addr_code() sets it, as do the SOFTMMU_CODE_ACCESS
acessors.
All targets ignore it for now, and all other callers pass "false".
This will allow targets who wish to split the mmu index between
instruction and data accesses to do so. A subsequent patch will
do just that for PowerPC.
Backports commit 97ed5ccdee95f0b98bedc601ff979e368583472c from qemu
There is an error in arm_excp_unmasked() function:
bitwise operator & is used with integer and bool operands
causing an incorrect zeroed result.
The patch fixes it.
Backports commit 771842585f3119f69641ed90a97d56eb9ed6f5ae from qemu
For the A64 instruction set, the semihosting call instruction
is 'HLT 0xf000'. Wire this up to call do_arm_semihosting()
if semihosting is enabled.
Backports commit 8012c84ff92a36d05dfe61af9b24dd01a7ea25e4 from qemu
The 64-bit A64 semihosting API has some pervasive changes from
the 32-bit version:
* all parameter blocks are arrays of 64-bit values, not 32-bit
* the semihosting call number is passed in W0
* the return value is a 64-bit value in X0
Implement the necessary handling for this widening.
Backports relevant parts of commit faacc041619581c566c21ed87aa1933420731282 from qemu
Some coprocessor register access functions need to be able
to report "trap to EL3 with an 'uncategorized' syndrome";
add the necessary CPAccessResult enum and handling for it.
I don't currently know of any registers that need to trap
to EL2 with the 'uncategorized' syndrome, but adding the
_EL2 enum as well is trivial and fills in what would
otherwise be an odd gap in the handling.
Backports commit e76157264da20b85698b09fa5eb8e02e515e232c from qemu
On CPUs with EL3, there are two physical timers, one for Secure and one
for Non-secure. Implement this extra timer and the AArch64 registers
which access it.
Backports commit b4d3978c2fdf944e428a46d2850dbd950b6fbe78 from qemu
It's easy to accidentally define two cpregs which both try
to reset the same underlying state field (for instance a
clash between an AArch64 EL3 definition and an AArch32
banked register definition). if the two definitions disagree
about the reset value then the result is dependent on which
one happened to be reached last in the hashtable enumeration.
Add a consistency check to detect and assert in these cases:
after reset, we run a second pass where we check that the
reset operation doesn't change the value of the register.
Backports commit 49a661910c1374858602a3002b67115893673c25 from qemu
Remove un-needed usages of ENV_GET_CPU() by converting the APIs to use
CPUState pointers and retrieving the env_ptr as minimally needed.
Scripted conversion for target-* change:
for I in target-*/cpu.h; do
sed -i \
's/\(^int cpu_[^_]*_exec(\)[^ ][^ ]* \*s);$/\1CPUState *cpu);/' \
$I;
done
Backports commit ea3e9847408131abc840240bd61e892d28459452 from qemu
Unified MPU only. Uses ARM architecture major revision to switch
between PMSAv5 and v7 when ARM_FEATURE_MPU is set. PMSA v6 remains
unsupported and is asserted against.
Backports commit f6bda88ff839e2adefe4959b7def420b90703855 from qemu
Define the arm CP registers for PMSAv7 and their accessor functions.
RGNR serves as a shared index that indexes into arrays storing the
DRBAR, DRSR and DRACR registers. DRBAR and friends have to be VMSDd
separately from the CP interface using a new PMSA specific VMSD
subsection.
Backports commit 6cb0b013a1fa421cdfb83257cd33f855cc90649a from qemu
cp_reg_reset() is called from g_hash_table_foreach() which does not
define a specific ordering of the hash table iteration. Thus doing reset
for registers marked as ALIAS would give an ambiguous result when
resetvalue is different for original and alias registers. Exit
cp_reg_reset() early when passed an alias register. Then clean up alias
register definitions from needless resetvalue and resetfn.
In particular, this fixes a bug in the handling of the PMCR register,
which had different resetvalues for its 32 and 64-bit views.
Backports commit b061a82b8afcc45ce09d770d9c0acdf429401054 from qemu
This isn't used by any of the code. In fact it looks like it was never
used as it came in with ARMv7 support.
Backports commit a79e0218e0ae27c9cdd2648bd46e5a916c903cc2 from qemu
Deleting the now-unused ARM_TBFLAG_CPACR_FPEN left a gap in the
bit usage; move the following ARM_TBFLAG_XSCALE_CPAR and
ARM_TBFLAG_NS_SHIFT down 3 bits to fill the gap.
Backports commit 647f767ba3b37fb229275086187e96242248a4ac from qemu
Extend the ARM disassemble context to take a target exception EL instead of a
boolean enable. This change reverses the polarity of the check making a value
of 0 indicate floating point enabled (no exception).
Backports commit 9dbbc748d671c70599101836cd1c2719d92f3017 from qemu
Currently we keep the TB flags PSTATE_SS and SS_ACTIVE in different
bit positions for AArch64 and AArch32. Replace these separate
definitions with a single common flag in the upper part of the
flags word.
Backports commit 3cf6a0fcedd429693d439556543400d5f0e31e1d from qemu
Adds CPTR_EL2/3 system registers definitions and access function.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
[PMM: merge CPTR_EL2 and HCPTR definitions into a single
def using STATE_BOTH;
don't use readfn/writefn to implement RAZ/WI registers;
don't use accessfn for the no-EL2 CPTR_EL2;
fix cpacr_access logic to catch EL2 accesses to CPACR being
trapped to EL3;
use new CP_ACCESS_TRAP_EL[23] rather than setting
exception.target_el directly]
Backports commit c6f191642a4027909813b4e6e288411f8371e951 from qemu
Some coprocessor access functions will need to indicate that the
instruction should trap to EL2 or EL3 rather than the default
target exception level; add corresponding CPAccessResult enum
entries and handling code.
Backports commit 38836a2cd47c20daaaa84873e3d6020f19e4bfca from qemu
Updated the interrupt handling to utilize and report through the target EL
exception field. This includes consolidating and cleaning up code where
needed. Target EL is now calculated once in arm_cpu_exec_interrupt() and
do_interrupt was updated to use the target_el exception field. The
necessary code from arm_excp_target_el() was merged in where needed and the
function removed.
Backports commit 012a906b19e99b126403ff4a257617dab9b34163 from qemu
Move the code which sets exception information out of
arm_cpu_handle_mmu_fault and into tlb_fill. tlb_fill
is the only caller which wants to raise_exception()
so it makes more sense for it to handle the whole of
the exception setup.
As part of this cleanup, move the user-mode-only
implementation function for the handle_mmu_fault CPU
method into cpu.c so we don't need to make it globally
visible, and rename the softmmu-only utility function
arm_cpu_handle_mmu_fault to arm_tlb_fill so it's clear
that it's not the same thing.
Backports commit 8c6084bf10fe721929ca94cf16acd6687e61d3ec from qemu
Add a CPU state exception target EL field that will be used for communicating
the EL to which an exception should be routed.
Add a disassembly context field for tracking the EL3 architecture needed for
determining the target exception EL.
Add a target EL argument to the generic exception helper for callers to specify
the EL to which the exception should be routed. Extended the helper to set
the newly added CPU state exception target el.
Added a function for setting the target exception EL and updated calls to helpers
to call it.
Backports commit 737103619869600668cc7e8700e4f6eab3943896 from qemu
No code uses the cpu_pc_from_tb() function. Delete from tricore and
arm which each provide an unused implementation. Update the comment
in tcg.h to reflect that this is obsoleted by synchronize_from_tb.
Backports commit fee068e4f190a36ef3bda9aa7c802f90434ef8e5 from qemu
Add AArch32 to AArch64 register sychronization functions.
Replace manual register synchronization with new functions in
aarch64_cpu_do_interrupt() and HELPER(exception_return)().
Backports commit ce02049dbf1828b4bc77d921b108a9d84246e5aa from qemu
This patch implements a fucntion pointer "virtio_is_big_endian"
from "CPUClass" structure for arm/arm64.
Function arm_cpu_is_big_endian() is added to determine and
return the guest cpu endianness to virtio.
This is required for running cross endian guests with virtio on ARM/ARM64.
Backports commit 84f2bed3cf505f90b7918e2de32e11da27160563 from qemu
target-arm doesn't use any of the MMU-mode specific cpu ldst
accessor functions. Suppress their generation by not defining
any of the MMU_MODE*_SUFFIX macros. ("user" and "kernel" are
too simplistic as descriptions of indexes 0 and 1 anyway.)
Backports commit 0dfef7b58f0c24b463e36630f08a45e93012b33a from qemu
We currently claim that for ARM the mmu_idx should simply be the current
exception level. However this isn't actually correct -- secure EL0 and EL1
should have separate indexes from non-secure EL0 and EL1 since their
VA->PA mappings may differ. We also will want an index for stage 2
translations when we properly support EL2.
Define and document all seven mmu index values that we require, and
pass the mmu index in the TB flags rather than exception level or
priv/user bit.
This change doesn't update the get_phys_addr() code, so our page
table walking still assumes a simplistic "user or priv?" model for
the moment.
Backports commit c1e3781090b9d36c60e1a254ba297cb34011d3d4 from qemu
Although M profile doesn't have the same concept of exception level
as A profile, it does have a notion of privileged versus not, which
we currently track in the privmode TB flag. Support returning this
information if arm_current_el() is called on an M profile core, so
that we can identify the correct MMU index to use (and put the MMU
index in the TB flags) without having to special-case M profile.
Backports commit 6d54ed3c93f1e05a483201b087142998381c9be8 from qemu
We currently mark ARM coprocessor/system register definitions with
the flag ARM_CP_NO_MIGRATE for two different reasons:
1) register is an alias on to state that's also visible via
some other register, and that other register is the one
responsible for migrating the state
2) register is not actually state at all (for instance the TLB
or cache maintenance operation "registers") and it makes no
sense to attempt to migrate it or otherwise access the raw state
This works fine for identifying which registers should be ignored
when performing migration, but we also use the same functions for
synchronizing system register state between QEMU and the kernel
when using KVM. In this case we don't want to try to sync state
into registers in category 2, but we do want to sync into registers
in category 1, because the kernel might have picked a different
one of the aliases as its choice for which one to expose for
migration. (In particular, on 32 bit hosts the kernel will
expose the state in the AArch32 version of the register, but
TCG's convention is to mark the AArch64 version as the version
to migrate, even if the CPU being emulated happens to be 32 bit,
so almost all system registers will hit this issue now that we've
added AArch64 system emulation.)
Fix this by splitting the NO_MIGRATE flag in two (ALIAS and NO_RAW)
corresponding to the two different reasons we might not want to
migrate a register. When setting up the TCG list of registers to
migrate we honour both flags; when populating the list from KVM,
only ignore registers which are NO_RAW.
Backports commit 7a0e58fa648736a75f2a6943afd2ab08ea15b8e0 from qemu
When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
FCSEIDR, CONTEXTIDR, TPIDRURW, TPIDRURO and TPIDRPRW have a secure
and a non-secure instance.
Backports commit 54bf36ed351c526cde0c853079f9ff1ab7e2ff89 from qemu
When EL3 is running in Aarch32 (or ARMv7 with Security Extensions)
VBAR has a secure and a non-secure instance, which are mapped to
VBAR_EL1 and VBAR_EL3.
Backports commit fb6c91ba2bb0b1c1b8662ceeeeb9474a025f9a6b from qemu
When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
PAR has a secure and a non-secure instance.
Backports commit 01c097f7960b330c4bf038d34bae17ad6c1ba499 from qemu
When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
IFAR and DFAR have a secure and a non-secure instance.
Backports commit b848ce2b9cbd38da3f2530fd93dba76dba0621c0 from qemu
When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
DFSR has a secure and a non-secure instance.
Backports commit 4a7e2d7315bd2ce28e49ccd0bde73eabdfd7437b from qemu
When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
IFSR has a secure and a non-secure instance. Adds IFSR32_EL2 definition and
storage.
Backports commit 88ca1c2d70523486a952065f3ed7b8fc823b5863 from qemu
When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
DACR has a secure and a non-secure instance. Adds definition for DACR32_EL2.
Backports commit 0c17d68c1d3d6c35f37f5692042d2edb65c8bcc0 from qemu
Adds secure and non-secure bank register suport for TTBCR.
Added new struct to compartmentalize the TCR data and masks. Removed old
tcr/ttbcr data and added a 4 element array of the new structs in cp15. This
allows for one entry per EL. Added a CP register definition for TCR_EL3.
Backports commit 11f136ee25232a00f433cefe98ee33cd614ecccc from qemu
