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84072 commits

Author SHA1 Message Date
Peter Maydell 20b8016ed8 First RISC-V PR for 6.0
This PR:
  - Fixes some issues with the m25p80
  - Improves GDB support for RISC-V
  - Fixes some Linux boot issues, specifiaclly 32-bit boot failures
  - Enforces PMP exceptions correctly
  - Fixes some Coverity issues
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Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210117-3' into staging

First RISC-V PR for 6.0

This PR:
 - Fixes some issues with the m25p80
 - Improves GDB support for RISC-V
 - Fixes some Linux boot issues, specifiaclly 32-bit boot failures
 - Enforces PMP exceptions correctly
 - Fixes some Coverity issues

# gpg: Signature made Sun 17 Jan 2021 21:53:19 GMT
# gpg:                using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8  CE8F 21E1 0D29 DF97 7054

* remotes/alistair/tags/pull-riscv-to-apply-20210117-3:
  riscv: Pass RISCVHartArrayState by pointer
  target/riscv: Remove built-in GDB XML files for CSRs
  target/riscv: Generate the GDB XML file for CSR registers dynamically
  target/riscv: Add CSR name in the CSR function table
  target/riscv: Make csr_ops[CSR_TABLE_SIZE] external
  hw/misc/sifive_u_otp: handling the fails of blk_pread and blk_pwrite
  hw/riscv: sifive_u: Use SIFIVE_U_CPU for mc->default_cpu_type
  target/riscv/pmp: Raise exception if no PMP entry is configured
  RISC-V: Place DTB at 3GB boundary instead of 4GB
  gdb: riscv: Add target description
  hw/block: m25p80: Implement AAI-WP command support for SST flashes
  hw/block: m25p80: Don't write to flash if write is disabled

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-18 10:28:26 +00:00
Keith Packard 767ba049b8 semihosting: Implement SYS_ISERROR
Part of Semihosting for AArch32 and AArch64 Release 2.0

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-10-keithp@keithp.com>
Message-Id: <20210108224256.2321-21-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard 27e3b109d1 semihosting: Implement SYS_TMPNAM
Part of Semihosting for AArch32 and AArch64 Release 2.0

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-9-keithp@keithp.com>
Message-Id: <20210108224256.2321-20-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard 4d834039c2 semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ
These are part of Semihosting for AArch32 and AArch64 Release 2.0

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-8-keithp@keithp.com>
Message-Id: <20210108224256.2321-19-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Kito Cheng 6b80cb25b4 riscv: Add semihosting support for user mode
This could made testing more easier and ARM/AArch64 has supported on
their linux user mode too, so I think it should be reasonable.

Verified GCC testsuite with newlib/semihosting.

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210107170717.2098982-7-keithp@keithp.com>
Message-Id: <20210108224256.2321-18-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard a10b9d93ec riscv: Add semihosting support
Adapt the arm semihosting support code for RISCV. This implementation
is based on the standard for RISC-V semihosting version 0.2 as
documented in

   https://github.com/riscv/riscv-semihosting-spec/releases/tag/0.2

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210107170717.2098982-6-keithp@keithp.com>
Message-Id: <20210108224256.2321-17-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard 095f8c0293 semihosting: Support SYS_HEAPINFO when env->boot_info is not set
env->boot_info is only set in some ARM startup paths, so we cannot
rely on it to support the SYS_HEAPINFO semihosting function. When not
available, fallback to finding a RAM memory region containing the
current stack and use the base of that.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-5-keithp@keithp.com>
Message-Id: <20210108224256.2321-16-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard 3c37cfe0b1 semihosting: Change internal common-semi interfaces to use CPUState *
This makes all of the internal interfaces architecture-independent and
renames the internal functions to use the 'common_semi' prefix instead
of 'arm' or 'arm_semi'.

To do this, some new architecture-specific internal helper functions
were created:

    static inline target_ulong
    common_semi_arg(CPUState *cs, int argno)

	Returns the argno'th semihosting argument, where argno can be
	either 0 or 1.

    static inline void
    common_semi_set_ret(CPUState *cs, target_ulong ret)

	Sets the semihosting return value.

    static inline bool
    common_semi_sys_exit_extended(CPUState *cs, int nr)

	This detects whether the specified semihosting call, which
	is either TARGET_SYS_EXIT or TARGET_SYS_EXIT_EXTENDED should
	be executed using the TARGET_SYS_EXIT_EXTENDED semantics.

    static inline target_ulong
    common_semi_rambase(CPUState *cs)

	Returns the base of RAM region used for heap and stack. This
	is used to construct plausible values for the SYS_HEAPINFO
	call.

In addition, several existing functions have been changed to flag
areas of code which are architecture specific:

    static target_ulong
    common_semi_flen_buf(CPUState *cs)

	Returns the current stack pointer minus 64, which is
	where a stat structure will be placed on the stack

    #define GET_ARG(n)

	This fetches arguments from the semihosting command's argument
	block. The address of this is available implicitly through the
	local 'args' variable. This is *mostly* architecture
	independent, but does depend on the current ABI's notion of
	the size of a 'long' parameter, which may need run-time checks
	(as it does on AARCH64)

    #define SET_ARG(n, val)

	This mirrors GET_ARG and stores data back into the argument
	block.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210107170717.2098982-4-keithp@keithp.com>
Message-Id: <20210108224256.2321-15-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard 0bb446d8b0 semihosting: Change common-semi API to be architecture-independent
The public API is now defined in
hw/semihosting/common-semi.h. do_common_semihosting takes CPUState *
instead of CPUARMState *. All internal functions have been renamed
common_semi_ instead of arm_semi_ or arm_. Aside from the API change,
there are no functional changes in this patch.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210107170717.2098982-3-keithp@keithp.com>
Message-Id: <20210108224256.2321-14-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Keith Packard 56b5170c87 semihosting: Move ARM semihosting code to shared directories
This commit renames two files which provide ARM semihosting support so
that they can be shared by other architectures:

 1. target/arm/arm-semi.c     -> hw/semihosting/common-semi.c
 2. linux-user/arm/semihost.c -> linux-user/semihost.c

The build system was modified use a new config variable,
CONFIG_ARM_COMPATIBLE_SEMIHOSTING, which has been added to the ARM
softmmu and linux-user default configs. The contents of the source
files has not been changed in this patch.

Signed-off-by: Keith Packard <keithp@keithp.com>
[AJB: rename arm-compat-semi, select SEMIHOSTING]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210107170717.2098982-2-keithp@keithp.com>
Message-Id: <20210108224256.2321-13-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Alex Bennée 797920b952 target/arm: use official org.gnu.gdb.aarch64.sve layout for registers
While GDB can work with any XML description given to it there is
special handling for SVE registers on the GDB side which makes the
users life a little better. The changes aren't that major and all the
registers save the $vg reported the same. All that changes is:

  - report org.gnu.gdb.aarch64.sve
  - use gdb nomenclature for names and types
  - minor re-ordering of the types to match reference
  - re-enable ieee_half (as we know gdb supports it now)
  - $vg is now a 64 bit int
  - check $vN and $zN aliasing in test

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Machado <luis.machado@linaro.org>
Message-Id: <20210108224256.2321-11-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Alex Bennée b9e10c6c75 gdbstub: ensure we clean-up when terminated
If you kill the inferior from GDB we end up leaving our socket lying
around. Fix this by calling gdb_exit() first.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210108224256.2321-10-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Alex Bennée 5ef0317f58 gdbstub: drop gdbserver_cleanup in favour of gdb_exit
Despite it's name it didn't actually clean-up so let us document
gdb_exit() better and use that.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210108224256.2321-9-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Alex Bennée ad9dcb207b gdbstub: drop CPUEnv from gdb_exit()
gdb_exit() has never needed anything from env and I doubt we are going
to start now.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210108224256.2321-8-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
Lirong Yuan 51c623b0de gdbstub: add support to Xfer:auxv:read: packet
This allows gdb to access the target’s auxiliary vector,
which can be helpful for telling system libraries important details
about the hardware, operating system, and process.

Signed-off-by: Lirong Yuan <yuanzi@google.com>
[AJB: minor tweaks to test case, update MAINTAINERS, restrict to Linux]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200730193932.3654677-1-yuanzi@google.com>
Message-Id: <20210108224256.2321-7-alex.bennee@linaro.org>
2021-01-18 10:04:48 +00:00
Alex Bennée c00506aa26 gdbstub: implement a softmmu based test
This adds a new tests that allows us to test softmmu only features
including watchpoints. To do achieve this we need to:

  - add _exit: labels to the boot codes
  - write a memory.py test case
  - plumb the test case into the build system
  - tweak the run_test script to:
    - re-direct output when asked
    - use socket based connection for all tests
    - add a small pause before connection

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210108224256.2321-6-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée 9559150e86 Revert "tests/tcg/multiarch/Makefile.target: Disable run-gdbstub-sha1 test"
We won't attempt to run the test now it's gated on a newer version of
gdb.

This reverts commit a930cadd83.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210108224256.2321-5-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée b1863ccc95 configure: gate our use of GDB to 8.3.1 or above
The support of socket based debugging which we need for linux-user
testing is only really stable as of 8.3.1 so lets gate our use of GDB
on having a relatively modern version.

For direct testing you can just point to a locally compiled version of
gdb via configure, e.g.:

  ../../configure --gdb=$HOME/src/binutils-gdb.git/builds/all/install/bin/gdb

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210108224256.2321-4-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée 5662ab11f6 test/guest-debug: echo QEMU command as well
This helps with debugging.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210108224256.2321-3-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée 9e5acb373d scripts/checkpatch.pl: fix git-show invocation to include diffstat
Without this checkpatch keeps complaining about new/changed files even
when MAINTAINERS has been updated. Normal invocations of checkpatch on
patch files rather than commit IDs are unaffected.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-13-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée 22250a6ecd gitlab: migrate the minimal tools and unit tests from Travis
These tests are good at shaking out missing stubs which otherwise work
if we have built targets. Rather than create a new job just add the
checks to the existing tools-and-docs build.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-12-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Lukas Straub 228e3ec4e2 Fix build with new yank feature by adding stubs
Fixes: 50186051f4 ("Introduce yank feature")
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
[AJB: tweak MAINTAINERS]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114141918.5201cc9c@gecko.fritz.box>
Message-Id: <20210114165730.31607-11-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée a8a3abe0b3 gitlab: move docs and tools build across from Travis
While we are at it we might as well check the tag generation. For
bonus points we run GNU globals htags into the public pages directory
for publishing with the auto generated pages.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210114165730.31607-10-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée ec9d7c38ec docker: expand debian-amd64 image to include tag tools
This is going to be helpful when we want to both test the tool
integration and in the case of global generate a xref doc build.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-9-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée 3e6c147535 Makefile: wrap cscope in quiet-command calls
For prettier output.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-8-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée af5d5762f3 Makefile: wrap etags in quiet-command calls
For prettier output.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-7-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée f2c78150c3 Makefile: wrap ctags in quiet-command calls
For prettier output.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-6-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alessandro Di Federico e405a3ebf5 Add newline when generating Dockerfile
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <1610080146-14968-36-git-send-email-tsimpson@quicinc.com>
Message-Id: <20210114165730.31607-5-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Philippe Mathieu-Daudé 977cb99a15 shippable.yml: Remove jobs duplicated on Gitlab-CI
The following jobs are duplicated on Gitlab-CI since commit
6bcb5fc0f7 ("gitlab-ci: Add cross-compiling build tests"):

- IMAGE=debian-armel-cross

  TARGET_LIST=arm-softmmu               -> cross-armel-system
  TARGET_LIST=arm-linux-user            -> cross-armel-user
  TARGET_LIST=armeb-linux-user          -> cross-armel-user

- IMAGE=debian-armhf-cross

  TARGET_LIST=arm-softmmu               -> cross-armhf-system
  TARGET_LIST=arm-linux-user            -> cross-armhf-user
  TARGET_LIST=armeb-linux-user          -> cross-armhf-user

- IMAGE=debian-arm64-cross

  TARGET_LIST=aarch64-softmmu           -> cross-arm64-system
  TARGET_LIST=aarch64-linux-user        -> cross-arm64-user

- IMAGE=debian-s390x-cross

  TARGET_LIST=s390x-softmmu             -> cross-s390x-system
  TARGET_LIST=s390x-linux-user          -> cross-s390x-user

- IMAGE=debian-mips-cross

  TARGET_LIST=mipsel-linux-user         -> cross-mips-user

- IMAGE=debian-mips64el-cross

  TARGET_LIST=mips64el-softmmu          -> cross-mips64el-system
  TARGET_LIST=mips64el-linux-user       -> cross-mips64el-user

- IMAGE=debian-ppc64el-cross

  TARGET_LIST=ppc64-softmmu             -> cross-ppc64el-system
  TARGET_LIST=ppc64-linux-user          -> cross-ppc64el-user
  TARGET_LIST=ppc64abi32-linux-user     -> cross-ppc64el-user

Remove them from Shippable CI.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210108145103.269353-1-f4bug@amsat.org>
Message-Id: <20210114165730.31607-4-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Alex Bennée b8a322549b Makefile: add GNU global tags support
GNU Global is another tags engine which is more like cscope in being
able to support finding both references and definitions. You will be
un-surprised to know it also integrates well with Emacs.

The main benefit of integrating it into find-src-path is it takes less
time to rebuild the database from scratch when you have a lot of build
directories under your source tree.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-3-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Philippe Mathieu-Daudé 8714e811a5 tests/docker: Remove Debian 9 remnant lines
Debian 9 base container has been removed in commits
e3755276d1 and c9d78b06c0. Remove the last remnants.

Fixes: e3755276d1 ("tests/docker: Remove old Debian 9 containers")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210107072933.3828450-1-f4bug@amsat.org>
Message-Id: <20210114165730.31607-2-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Peter Maydell e0cbcf1eea pc,pci,virtio: fixes, features
Fixes all over the place.
 PXB support for ARM.
 boot index for vhost-user-fs.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,pci,virtio: fixes, features

Fixes all over the place.
PXB support for ARM.
boot index for vhost-user-fs.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Sun 17 Jan 2021 11:44:55 GMT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  acpi: Update _DSM method in expected files
  acpi: Enable pxb unit-test for ARM virt machine
  Kconfig: Compile PXB for ARM_VIRT
  acpi/gpex: Exclude pxb's resources from PCI0
  acpi/gpex: Inform os to keep firmware resource map
  acpi: Add addr offset in build_crs
  acpi: Fix unmatched expected DSDT.pxb file
  acpi: Allow DSDT acpi table changes
  vhost-user-fs: add the "bootindex" property
  pci/shpc: don't push attention button when ejecting powered-off device

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-17 17:04:40 +00:00
Jiahui Cen ccee1a8140 acpi: Update _DSM method in expected files
A new _DSM #5 method is added.

Update expected DSDT files accordingly, and re-enable their testing.

Full diff of changed files disassembly:

tests/data/acpi/microvm/DSDT.pcie.dsl:
@@ -5,13 +5,13 @@
  *
  * Disassembling to symbolic ASL+ operators
  *
- * Disassembly of tests/data/acpi/microvm/DSDT.pcie, Thu Jan 14 13:39:35 2021
+ * Disassembly of tests/data/acpi/microvm/DSDT.pcie, Thu Jan 14 13:51:13 2021
  *
  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x00000BCF (3023)
+ *     Length           0x00000BD7 (3031)
  *     Revision         0x02
- *     Checksum         0x29
+ *     Checksum         0x99
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPCDSDT"
  *     OEM Revision     0x00000001 (1)
@@ -1302,9 +1302,14 @@
                     {
                         Return (Buffer (One)
                         {
-                             0x01                                             // .
+                             0x21                                             // !
                         })
                     }
+
+                    If ((Arg2 == 0x05))
+                    {
+                        Return (Zero)
+                    }
                 }

                 Return (Buffer (One)

tests/data/acpi/virt/DSDT.dsl:
@@ -5,13 +5,13 @@
  *
  * Disassembling to symbolic ASL+ operators
  *
- * Disassembly of tests/data/acpi/virt/DSDT, Thu Jan 14 13:39:35 2021
+ * Disassembly of tests/data/acpi/virt/DSDT, Thu Jan 14 13:51:13 2021
  *
  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x0000144C (5196)
+ *     Length           0x00001454 (5204)
  *     Revision         0x02
- *     Checksum         0xF0
+ *     Checksum         0x60
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPCDSDT"
  *     OEM Revision     0x00000001 (1)
@@ -1838,9 +1838,14 @@
                     {
                         Return (Buffer (One)
                         {
-                             0x01                                             // .
+                             0x21                                             // !
                         })
                     }
+
+                    If ((Arg2 == 0x05))
+                    {
+                        Return (Zero)
+                    }
                 }

                 Return (Buffer (One)

tests/data/acpi/virt/DSDT.memhp.dsl:
@@ -5,13 +5,13 @@
  *
  * Disassembling to symbolic ASL+ operators
  *
- * Disassembly of tests/data/acpi/virt/DSDT.memhp, Thu Jan 14 13:39:35 2021
+ * Disassembly of tests/data/acpi/virt/DSDT.memhp, Thu Jan 14 13:51:13 2021
  *
  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x0000199D (6557)
+ *     Length           0x000019A5 (6565)
  *     Revision         0x02
- *     Checksum         0x11
+ *     Checksum         0x90
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPCDSDT"
  *     OEM Revision     0x00000001 (1)
@@ -1840,9 +1840,14 @@
                     {
                         Return (Buffer (One)
                         {
-                             0x01                                             // .
+                             0x21                                             // !
                         })
                     }
+
+                    If ((Arg2 == 0x05))
+                    {
+                        Return (Zero)
+                    }
                 }

                 Return (Buffer (One)

tests/data/acpi/virt/DSDT.numamem.dsl:
@@ -5,13 +5,13 @@
  *
  * Disassembling to symbolic ASL+ operators
  *
- * Disassembly of tests/data/acpi/virt/DSDT.numamem, Thu Jan 14 13:39:35 2021
+ * Disassembly of tests/data/acpi/virt/DSDT.numamem, Thu Jan 14 13:51:13 2021
  *
  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x0000144C (5196)
+ *     Length           0x00001454 (5204)
  *     Revision         0x02
- *     Checksum         0xF0
+ *     Checksum         0x60
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPCDSDT"
  *     OEM Revision     0x00000001 (1)
@@ -1838,9 +1838,14 @@
                     {
                         Return (Buffer (One)
                         {
-                             0x01                                             // .
+                             0x21                                             // !
                         })
                     }
+
+                    If ((Arg2 == 0x05))
+                    {
+                        Return (Zero)
+                    }
                 }

                 Return (Buffer (One)

tests/data/acpi/virt/DSDT.pxb.dsl:
@@ -5,13 +5,13 @@
  *
  * Disassembling to symbolic ASL+ operators
  *
- * Disassembly of tests/data/acpi/virt/DSDT.pxb, Thu Jan 14 13:39:35 2021
+ * Disassembly of tests/data/acpi/virt/DSDT.pxb, Thu Jan 14 13:51:13 2021
  *
  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x00001DF9 (7673)
+ *     Length           0x00001E09 (7689)
  *     Revision         0x02
- *     Checksum         0x42
+ *     Checksum         0x30
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPCDSDT"
  *     OEM Revision     0x00000001 (1)
@@ -1810,9 +1810,14 @@
                     {
                         Return (Buffer (One)
                         {
-                             0x01                                             // .
+                             0x21                                             // !
                         })
                     }
+
+                    If ((Arg2 == 0x05))
+                    {
+                        Return (Zero)
+                    }
                 }

                 Return (Buffer (One)
@@ -3025,9 +3030,14 @@
                     {
                         Return (Buffer (One)
                         {
-                             0x01                                             // .
+                             0x21                                             // !
                         })
                     }
+
+                    If ((Arg2 == 0x05))
+                    {
+                        Return (Zero)
+                    }
                 }

                 Return (Buffer (One)

Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-9-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen f698a88a77 acpi: Enable pxb unit-test for ARM virt machine
No matter whether the pxb is enabled or not, the CONFIG_PXB macro in test
would keep undefined. And since pxb is now enabled for ARM Virt machine
by default, let's enable pxb unit-test by removing the CONFIG_PXB.

Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-8-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen cc9346e4a9 Kconfig: Compile PXB for ARM_VIRT
PXB is now supported on ARM, so let's compile for arm_virt machine.

Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-7-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen aee519c210 acpi/gpex: Exclude pxb's resources from PCI0
Exclude the resources of extra root bridges from PCI0's _CRS. Otherwise,
the resource windows would overlap in guest, and the IO resource window
would fail to be registered.

Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-6-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen 0cf8882fd0 acpi/gpex: Inform os to keep firmware resource map
There may be some differences in pci resource assignment between guest os
and firmware.

Eg. A Bridge with Bus [d2]
    -+-[0000:d2]---01.0-[d3]----01.0

    where [d2:01.00] is a pcie-pci-bridge with BAR0 (mem, 64-bit, non-pref) [size=256]
          [d3:01.00] is a PCI Device with BAR0 (mem, 64-bit, pref) [size=128K]
                                          BAR4 (mem, 64-bit, pref) [size=64M]

    In EDK2, the Resource Map would be:
        PciBus: Resource Map for Bridge [D2|01|00]
        Type = PMem64; Base = 0x8004000000;     Length = 0x4100000;     Alignment = 0x3FFFFFF
           Base = 0x8004000000; Length = 0x4000000;     Alignment = 0x3FFFFFF;  Owner = PCI [D3|01|00:20]
           Base = 0x8008000000; Length = 0x20000;       Alignment = 0x1FFFF;    Owner = PCI [D3|01|00:10]
        Type =  Mem64; Base = 0x8008100000;     Length = 0x100; Alignment = 0xFFF
    It would use 0x4100000 to calculate the root bus's PMem64 resource window.

    While in Linux, kernel will use 0x1FFFFFF as the alignment to calculate
    the PMem64 size, which would be 0x6000000. So kernel would try to
    allocate 0x6000000 from the PMem64 resource window, but since the window
    size is 0x4100000 as assigned by EDK2, the allocation would fail.

The diffences could result in resource assignment failure.

Using _DSM #5 method to inform guest os not to ignore the PCI configuration
that firmware has done at boot time could handle the differences.

Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-5-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen e41ee85528 acpi: Add addr offset in build_crs
AML needs Address Translation offset to describe how a bridge translates
addresses accross the bridge when using an address descriptor, and
especially on ARM, the translation offset of pio resource is usually
non zero.

Therefore, it's necessary to pass offset for pio, mmio32, mmio64 and bus
number into build_crs.

Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-4-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen 4c4465ff1c acpi: Fix unmatched expected DSDT.pxb file
Commit fe1127da11 ("unit-test: Add the binary file and clear diff.h") does
not use the up-to-date expected file for pxb for ARM virt.

Fix the expected DSDT.pxb file.

Full diff of changed file disassembly:

@@ -5,13 +5,13 @@
  *
  * Disassembling to symbolic ASL+ operators
  *
- * Disassembly of tests/data/acpi/virt/DSDT.pxb, Thu Jan 14 09:33:09 2021
+ * Disassembly of tests/data/acpi/virt/DSDT.pxb, Thu Jan 14 13:34:47 2021
  *
  * Original Table Header:
  *     Signature        "DSDT"
- *     Length           0x00001E7A (7802)
+ *     Length           0x00001DF9 (7673)
  *     Revision         0x02
- *     Checksum         0x57
+ *     Checksum         0x42
  *     OEM ID           "BOCHS "
  *     OEM Table ID     "BXPCDSDT"
  *     OEM Revision     0x00000001 (1)
@@ -45,32 +45,6 @@
             })
         }

-        Device (FLS0)
-        {
-            Name (_HID, "LNRO0015")  // _HID: Hardware ID
-            Name (_UID, Zero)  // _UID: Unique ID
-            Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
-            {
-                Memory32Fixed (ReadWrite,
-                    0x00000000,         // Address Base
-                    0x04000000,         // Address Length
-                    )
-            })
-        }
-
-        Device (FLS1)
-        {
-            Name (_HID, "LNRO0015")  // _HID: Hardware ID
-            Name (_UID, One)  // _UID: Unique ID
-            Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
-            {
-                Memory32Fixed (ReadWrite,
-                    0x04000000,         // Address Base
-                    0x04000000,         // Address Length
-                    )
-            })
-        }
-
         Device (FWCF)
         {
             Name (_HID, "QEMU0002")  // _HID: Hardware ID
@@ -665,9 +639,6 @@
         {
             Name (_HID, "PNP0A08" /* PCI Express Bus */)  // _HID: Hardware ID
             Name (_CID, "PNP0A03" /* PCI Bus */)  // _CID: Compatible ID
-            Name (_ADR, Zero)  // _ADR: Address
-            Name (_CCA, One)  // _CCA: Cache Coherency Attribute
-            Name (_SEG, Zero)  // _SEG: PCI Segment
             Name (_BBN, 0x80)  // _BBN: BIOS Bus Number
             Name (_UID, 0x80)  // _UID: Unique ID
             Name (_STR, Unicode ("pxb Device"))  // _STR: Description String
@@ -1857,7 +1828,7 @@
             Name (_CID, "PNP0A03" /* PCI Bus */)  // _CID: Compatible ID
             Name (_SEG, Zero)  // _SEG: PCI Segment
             Name (_BBN, Zero)  // _BBN: BIOS Bus Number
-            Name (_UID, "PCI0")  // _UID: Unique ID
+            Name (_UID, Zero)  // _UID: Unique ID
             Name (_STR, Unicode ("PCIe 0 Device"))  // _STR: Description String
             Name (_CCA, One)  // _CCA: Cache Coherency Attribute
             Name (_PRT, Package (0x80)  // _PRT: PCI Routing Table
@@ -2983,41 +2954,37 @@
                 Return (0x0000004010000000)
             }

-            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
+            Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
             {
-                Return (ResourceTemplate ()
-                {
-                    WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
-                        0x0000,             // Granularity
-                        0x0000,             // Range Minimum
-                        0x007F,             // Range Maximum
-                        0x0000,             // Translation Offset
-                        0x0080,             // Length
-                        ,, )
-                    DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite,
-                        0x00000000,         // Granularity
-                        0x10000000,         // Range Minimum
-                        0x3EFEFFFF,         // Range Maximum
-                        0x00000000,         // Translation Offset
-                        0x2EFF0000,         // Length
-                        ,, , AddressRangeMemory, TypeStatic)
-                    DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
-                        0x00000000,         // Granularity
-                        0x00000000,         // Range Minimum
-                        0x0000FFFF,         // Range Maximum
-                        0x3EFF0000,         // Translation Offset
-                        0x00010000,         // Length
-                        ,, , TypeStatic, DenseTranslation)
-                    QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite,
-                        0x0000000000000000, // Granularity
-                        0x0000008000000000, // Range Minimum
-                        0x000000FFFFFFFFFF, // Range Maximum
-                        0x0000000000000000, // Translation Offset
-                        0x0000008000000000, // Length
-                        ,, , AddressRangeMemory, TypeStatic)
-                })
-            }
-
+                WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
+                    0x0000,             // Granularity
+                    0x0000,             // Range Minimum
+                    0x007F,             // Range Maximum
+                    0x0000,             // Translation Offset
+                    0x0080,             // Length
+                    ,, )
+                DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite,
+                    0x00000000,         // Granularity
+                    0x10000000,         // Range Minimum
+                    0x3EFEFFFF,         // Range Maximum
+                    0x00000000,         // Translation Offset
+                    0x2EFF0000,         // Length
+                    ,, , AddressRangeMemory, TypeStatic)
+                DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+                    0x00000000,         // Granularity
+                    0x00000000,         // Range Minimum
+                    0x0000FFFF,         // Range Maximum
+                    0x3EFF0000,         // Translation Offset
+                    0x00010000,         // Length
+                    ,, , TypeStatic, DenseTranslation)
+                QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite,
+                    0x0000000000000000, // Granularity
+                    0x0000008000000000, // Range Minimum
+                    0x000000FFFFFFFFFF, // Range Maximum
+                    0x0000000000000000, // Translation Offset
+                    0x0000008000000000, // Length
+                    ,, , AddressRangeMemory, TypeStatic)
+            })
             Name (SUPP, Zero)
             Name (CTRL, Zero)
             Method (_OSC, 4, NotSerialized)  // _OSC: Operating System Capabilities

Fixes: fe1127da11 ("unit-test: Add the binary file and clear diff.h")
Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-3-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Jiahui Cen 6f9ec653f3 acpi: Allow DSDT acpi table changes
Acked-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Message-Id: <20210114100643.10617-2-cenjiahui@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-01-17 06:42:54 -05:00
Alistair Francis a8259b5323 riscv: Pass RISCVHartArrayState by pointer
We were accidently passing RISCVHartArrayState by value instead of
pointer. The type is 824 bytes long so let's correct that and pass it by
pointer instead.

Fixes: Coverity CID 1438099
Fixes: Coverity CID 1438100
Fixes: Coverity CID 1438101
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Message-id: f3e04424723e0e222769991896cc82308fd23f76.1610751609.git.alistair.francis@wdc.com
2021-01-16 14:34:46 -08:00
Bin Meng 138ca49a82 target/riscv: Remove built-in GDB XML files for CSRs
Now that we have switched to generate the RISC-V CSR XML dynamically,
remove the built-in hardcoded XML files.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210116054123.5457-3-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Bin Meng b93777e1b4 target/riscv: Generate the GDB XML file for CSR registers dynamically
At present QEMU RISC-V uses a hardcoded XML to report the feature
"org.gnu.gdb.riscv.csr" [1]. There are two major issues with the
approach being used currently:

- The XML does not specify the "regnum" field of a CSR entry, hence
  consecutive numbers are used by the remote GDB client to access
  CSRs. In QEMU we have to maintain a map table to convert the GDB
  number to the hardware number which is error prone.
- The XML contains some CSRs that QEMU does not implement at all,
  which causes an "E14" response sent to remote GDB client.

Change to generate the CSR register list dynamically, based on the
availability presented in the CSR function table. This new approach
will reflect a correct list of CSRs that QEMU actually implements.

[1] https://sourceware.org/gdb/current/onlinedocs/gdb/RISC_002dV-Features.html#RISC_002dV-Features

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210116054123.5457-2-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Bin Meng 8ceac5dc3d target/riscv: Add CSR name in the CSR function table
In preparation to generate the CSR register list for GDB stub
dynamically, let's add the CSR name in the CSR function table.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1610427124-49887-3-git-send-email-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Bin Meng 56118ee88d target/riscv: Make csr_ops[CSR_TABLE_SIZE] external
In preparation to generate the CSR register list for GDB stub
dynamically, change csr_ops[] to non-static so that it can be
referenced externally.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1610427124-49887-2-git-send-email-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Green Wan 29b5fe0dcd hw/misc/sifive_u_otp: handling the fails of blk_pread and blk_pwrite
Fix code coverage issues by checking return value and handling fail case
of blk_pread() and blk_pwrite(). Return default value 0xff if read fails.

Fixes: Coverity CID 1435959
Fixes: Coverity CID 1435960
Fixes: Coverity CID 1435961
Signed-off-by: Green Wan <green.wan@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20201104092900.21214-1-green.wan@sifive.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Bin Meng 1eaada8ae1 hw/riscv: sifive_u: Use SIFIVE_U_CPU for mc->default_cpu_type
SIFIVE_U_CPU is conditionally set to SIFIVE_U34 or SIFIVE_U54, hence
there is no need to use #idef to set the mc->default_cpu_type.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210109143637.29645-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Atish Patra d102f19a20 target/riscv/pmp: Raise exception if no PMP entry is configured
As per the privilege specification, any access from S/U mode should fail
if no pmp region is configured.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20201223192553.332508-1-atish.patra@wdc.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Atish Patra 1a475d39ef RISC-V: Place DTB at 3GB boundary instead of 4GB
Currently, we place the DTB at 2MB from 4GB or end of DRAM which ever is
lesser. However, Linux kernel can address only 1GB of memory for RV32.
Thus, it can not map anything beyond 3GB (assuming 2GB is the starting address).
As a result, it can not process DT and panic if opensbi dynamic firmware
is used. While at it, place the DTB further away to avoid in memory placement
issues in future.

Fix this by placing the DTB at 16MB from 3GB or end of DRAM whichever is lower.

Fixes: 66b1205bc5 ("RISC-V: Copy the fdt in dram instead of ROM")

Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Message-id: 20210107091127.3407870-1-atish.patra@wdc.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
Sylvain Pelissier edf647864b gdb: riscv: Add target description
Target description is not currently implemented in RISC-V
architecture. Thus GDB won't set it properly when attached.
The patch implements the target description response.

Signed-off-by: Sylvain Pelissier <sylvain.pelissier@gmail.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210106204141.14027-1-sylvain.pelissier@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00