KVM on ARM refuses to decode load/store instructions used to perform
I/O to emulated devices, and instead relies on the exception syndrome
information to describe the operand register, access size, etc.
This is only possible for instructions that have a single input/output
register (as opposed to ones that increment the offset register, or
load/store pair instructions, etc). Otherwise, QEMU crashes with the
following error
error: kvm run failed Function not implemented
R00=01010101 R01=00000008 R02=00000048 R03=08000820
R04=00000120 R05=7faaa0e0 R06=7faaa0dc R07=7faaa0e8
R08=7faaa0ec R09=7faaa088 R10=000000ff R11=00000080
R12=ff000000 R13=7fccfe08 R14=7faa835f R15=7faa887c
PSR=800001f3 N--- T svc32
QEMU: Terminated
and KVM produces a warning such as the following in the kernel log
kvm [17646]: load/store instruction decoding not implemented
The IoLib implementation provided by MdePkg/Library/BaseIoLibIntrinsic
is based on C code, and when LTO is in effect, the MMIO accesses could
be merged with, e.g., manipulations of the loop counter, producing
opcodes that KVM does not support for emulated MMIO.
So let's add a special ArmVirt flavor of this library that implements
that actual load/store operations in assembler, ensuring that the
instructions involved can be emulated by KVM.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
NASM has replaced ASM and S files.
1. Remove ASM from all modules.
2. Remove S files from the drivers only.
3. https://bugzilla.tianocore.org/show_bug.cgi?id=881
After NASM is updated, S files can be removed from Library.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
In commit b6d11d7c46 ("MdePkg: BaseIoLibIntrinsic (IoLib class)
library", 2017-04-12), the MOV instructions in the write loops were
probably copied from the read loops. However, the operand order was not
adjusted.
As a result, the IoWriteFifoXX() routines, when invoked in SEV guests, now
overwrite the source buffer with value 0x01 / 0x0001 / 0x00000001 -- the
SevNoRepIo() function returns value 1 in EAX, in SEV guests --, and write
the same value to the target IO port.
Fix this by putting the target operand (AL / AX / EAX) first, and the
source operand (BYTE / WORD / DWORD [ESI/RSI]) second.
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Fixes: b6d11d7c46
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
This patch adds an SEV-specific .INF and corresponding assembly
files, to unroll REP INSx/OUTSx on IoRead/WriteFifo#() routines
when the SEV feature is enabled under a hypervisor environment.
The new .INF only supports the IA32 and X64 architectures.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Leo Duran <leo.duran@amd.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
The UefiCpuPkg/CpuIo2Dxe driver and the QemuCfgLib library have duplicate
implementations of I/O Fifo routines. This patch clones the I/O Fifo
routines into the BaseIoLibIntrinsic library and expands the IoLib class
to include the ported I/O Fifo routines.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Leo Duran <leo.duran@amd.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
The EBC instruction set supports memory and MMIO access, but not
I/O port access. Add EBC support to BaseIoLibIntrinsic that
generates an ASSERT() if the IoReadXX()/IoWriteXX() APIs are used.
This matches the implementation for other CPU types that do not
support I/O port access.
Cc: Liming Gao <liming.gao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19234 6f19259b-4bc3-4df7-8a09-765794883524
Module UNI and Package UNI files are not DOS format. Convert them to DOS format.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gao, Liming <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16042 6f19259b-4bc3-4df7-8a09-765794883524
2. Add MODULE_UNI_FILE file that contains the localized Abstract and Description of a module.
a. Addresses an information gap between INF files and the UEFI Distribution Packaging Specification XML schema
b. There will be an associated update to UPT in BaseTools to consume MODULE_UNI_FILE and associated UNI file during UDP creation that performs the INF -> XML conversion.
c. There will be an associated update to UPT in BaseTools to produce MODULE_UNI_FILE and associated UNI file during UDP installation that performs the XML -> INF conversion.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gao, Liming <liming.gao@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15918 6f19259b-4bc3-4df7-8a09-765794883524
1. Usage information in INF file comment blocks are either incomplete or incorrect.
This includes usage information for Protocols/PPIs/GUIDs/PCDs/HOBs/Events/BootModes.
The syntax for usage information in comment blocks is defined in the EDK II Module Information (INF) Specification
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gao, Liming <liming.gao@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15917 6f19259b-4bc3-4df7-8a09-765794883524
2. Clean BasePeCoff library instance, only keep one copy PeCoffLoaderEx.c file for IA32, X64 and IPF arch
3. Clean the confused comments
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5927 6f19259b-4bc3-4df7-8a09-765794883524
2) Change EFI_FVB_ATTRIBUTE to EFI_FVB2_ATTRIBUTE, As Zimmer, Vincent’s PI1.0 errata document said, in PI we need use EFI_FVB2_ATTRIBUTE to differ the specification change.
3) Remove duplicate definition of SERIAL_MODE, PARALLEL_MODE in Include\Framework\Legacy16.h
4) Remove EFI_FV_FILE_ATTRIB_FIXED and EFI_FV_FILE_ATTRIB_ALIGNMENT from IntelFrameworkPkg\Include\Protocol\FirmwareVolume.h, because they defined in PI specification.
5) Remove EFI_FORM_LABEL from IntelFrameworkPkg\Include\Protocol\HiiFramework.h
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3333 6f19259b-4bc3-4df7-8a09-765794883524
Ard Biesheuvel
Liming Gao
Laszlo Ersek
Leo Duran
Dandan Bi
Jordan Justen
Michael Kinney
Harry Liebel
lgao4
myronporter
hhtian
mdkinney
qhuang8
xli24
gikidy
qwang12
eric_tian
vanjeff
yshang1
klu2
jwang36
AJFISH