Commit Graph

27910 Commits

Author SHA1 Message Date
Bin Meng e9d28020d2 hw/sd: sd: Drop sd_crc16()
commit f6fb1f9b31 ("sdcard: Correct CRC16 offset in sd_function_switch()")
changed the 16-bit CRC to be stored at offset 64. In fact, this CRC
calculation is completely wrong. From the original codes, it wants
to calculate the CRC16 of the first 64 bytes of sd->data[], however
passing 64 as the `width` to sd_crc16() actually counts 256 bytes
starting from the `message` for the CRC16 calculation, which is not
what we want.

Besides that, it seems existing sd_crc16() algorithm does not match
the SD spec, which says CRC16 is the CCITT one but the calculation
does not produce expected result. It turns out the CRC16 was never
transferred outside the sd core, as in sd_read_byte() we see:

    if (sd->data_offset >= 64)
        sd->state = sd_transfer_state;

Given above reasons, let's drop it.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210123104016.17485-6-bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2021-01-24 19:14:15 +01:00
Bin Meng dec6d33849 hw/sd: sd: Support CMD59 for SPI mode
After the card is put into SPI mode, CRC check for all commands
including CMD0 will be done according to CMD59 setting. But this
command is currently unimplemented. Simply allow the decoding of
CMD59, but the CRC remains unchecked.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210123104016.17485-5-bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2021-01-24 18:53:25 +01:00
Bin Meng 281c5c95b2 hw/sd: ssi-sd: Fix incorrect card response sequence
Per the "Physical Layer Specification Version 8.00" chapter 7.5.1,
"Command/Response", there is a minimum 8 clock cycles (Ncr) before
the card response shows up on the data out line. However current
implementation jumps directly to the sending response state after
all 6 bytes command is received, which is a spec violation.

Add a new state PREP_RESP in the ssi-sd state machine to handle it.

Fixes: 775616c3ae ("Partial SD card SPI mode support")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210123104016.17485-4-bmeng.cn@gmail.com>
[PMD: Change VMState version id 2 -> 3]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2021-01-24 18:53:20 +01:00
Gerd Hoffmann 2980a31673 usb-host: map LIBUSB_SPEED_SUPER_PLUS to USB_SPEED_SUPER
Handle host superspeedplus (usb 3.1+) devices like superspeed (usb 3.0)
devices.  That is enough to get them handled properly by xhci.  They show
up as superspeed devices inside the guest, but should be able to actually
run at higher speeds.

Reported-by: Angel Pagan <Angel.Pagan@stratus.com>
Tested-by: Angel Pagan <Angel.Pagan@stratus.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20210121150832.3564097-1-kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Gerd Hoffmann 0f6dba145a usb: add pcap support.
Log all traffic of a specific usb device to a pcap file for later
inspection.  File format is compatible with linux usb monitor.

Usage:
  qemu -device usb-${somedevice},pcap=file.pcap
  wireshark file.pcap

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210119194452.2148048-1-kraxel@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Philippe Mathieu-Daudé d755cb9696 hw/usb/dev-uas: Report command additional adb length as unsupported
We are not ready to handle additional CDB data.

If a guest sends a packet with such additional data,
report the command parameter as not supported.

Specify a size (of 1 byte) for the add_cdb member we
are not using, to fix the following warning:

  usb/dev-uas.c:157:31: error: field 'status' with variable sized type 'uas_iu' not at the end of a struct or class is a GNU extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
      uas_iu                    status;
                                ^

Reported-by: Ed Maste <emaste@FreeBSD.org>
Reported-by: Daniele Buono <dbuono@linux.vnet.ibm.com>
Reported-by: Han Han <hhan@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210120153522.1173897-4-philmd@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Philippe Mathieu-Daudé 96b66e5575 hw/usb/hcd-xhci: Fix extraneous format-truncation error on 32-bit hosts
For some reason the assert() added in commit ccb799313a
("hw/usb: avoid format truncation warning when formatting
port name") does not fix when building with GCC 10.

KISS and expand the buffer by 4 bytes to silent the following
error when using GCC 10.2.1 on Fedora 33:

  hw/usb/hcd-xhci.c: In function 'usb_xhci_realize':
  hw/usb/hcd-xhci.c:3309:54: error: '%d' directive output may be truncated writing between 1 and 8 bytes into a region of size 5 [-Werror=format-truncation=]
   3309 |             snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1);
        |                                                      ^~~~~~~~~~~~~~~
  hw/usb/hcd-xhci.c:3309:54: note: directive argument in the range [1, 89478486]
  In file included from /usr/include/stdio.h:866,
                   from include/qemu/osdep.h:85,
                   from hw/usb/hcd-xhci.c:22:
  /usr/include/bits/stdio2.h:70:10: note: '__builtin___snprintf_chk' output between 13 and 20 bytes into a destination of size 16
     70 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
        |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     71 |        __bos (__s), __fmt, __va_arg_pack ());
        |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  hw/usb/hcd-xhci.c:3323:54: error: '%d' directive output may be truncated writing between 1 and 8 bytes into a region of size 5 [-Werror=format-truncation=]
   3323 |             snprintf(port->name, sizeof(port->name), "usb3 port #%d", i+1);
        |                                                      ^~~~~~~~~~~~~~~
  hw/usb/hcd-xhci.c:3323:54: note: directive argument in the range [1, 89478486]
  In file included from /usr/include/stdio.h:866,
                   from include/qemu/osdep.h:85,
                   from hw/usb/hcd-xhci.c:22:
  /usr/include/bits/stdio2.h:70:10: note: '__builtin___snprintf_chk' output between 13 and 20 bytes into a destination of size 16
     70 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
        |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     71 |        __bos (__s), __fmt, __va_arg_pack ());
        |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  cc1: all warnings being treated as errors

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210118181115.313742-1-philmd@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Markus Armbruster c3585b600b hw/usb: Convert to qdev_realize()
Device code shouldn't mess with QOM property "realized" since we have
proper interfaces (merge commit 6675a653).  Commit 8ddab8dd3d
"usb/hcd-xhci: Split pci wrapper for xhci base model" and commit
f00ff136ee "usb: hcd-xhci-sysbus: Attach xhci to sysbus device"
reintroduced two instances.  Clean them up.  Note that s->xhci is
a (bus-less) TYPE_XHCI device.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210119120151.53757-1-armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Alex Chen 268c02424b hw/usb: Fix bad printf format specifiers
We should use printf format specifier "%u" instead of "%d" for
argument of type "unsigned int".

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Message-id: 20201119025751.45750-1-alex.chen@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Fabrice Fontaine a3c27ea034 hw/usb/host-libusb.c: fix build with kernel < 5.0
USBDEVFS_GET_SPEED is used since version 5.2.0 and
202d69a715
resulting in the following build failure with kernel < 5.0:

../hw/usb/host-libusb.c: In function 'usb_host_open':
../hw/usb/host-libusb.c:953:32: error: 'USBDEVFS_GET_SPEED' undeclared (first use in this function); did you mean 'USBDEVFS_GETDRIVER'?
         int rc = ioctl(hostfd, USBDEVFS_GET_SPEED, NULL);
                                ^~~~~~~~~~~~~~~~~~
                                USBDEVFS_GETDRIVER

A tentative was made to fix this build failure with
4969e697c1

However, the assumption that distros with old kernels also have old
libusb is just wrong so also add a check for defined(USBDEVFS_GET_SPEED)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Message-id: 20201213213016.457350-1-fontaine.fabrice@gmail.com

[ kraxel: codestyle whitespace fixup ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Peter Maydell a957d25dde s390x updates:
- headers update to Linux 5.11-rc2
 - fix tcg emulation for some instructions that are generated by
   clang Linux kernel builds
 - vfio-ccw: wire up the device unplug notification mechanism
 - fix a gcc 11 warning
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Merge remote-tracking branch 'remotes/cohuck-gitlab/tags/s390x-20210121' into staging

s390x updates:
- headers update to Linux 5.11-rc2
- fix tcg emulation for some instructions that are generated by
  clang Linux kernel builds
- vfio-ccw: wire up the device unplug notification mechanism
- fix a gcc 11 warning

# gpg: Signature made Thu 21 Jan 2021 12:08:12 GMT
# gpg:                using RSA key C3D0D66DC3624FF6A8C018CEDECF6B93C6F02FAF
# gpg:                issuer "cohuck@redhat.com"
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" [unknown]
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>" [unknown]
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>" [unknown]
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck-gitlab/tags/s390x-20210121:
  s390x: Use strpadcpy for copying vm name
  vfio-ccw: Connect the device request notifier
  Update linux headers to 5.11-rc2
  update-linux-headers: Include const.h
  s390x/tcg: Ignore register content if b1/b2 is zero when handling EXECUTE
  tests/tcg/s390x: Fix EXRL tests
  s390x/tcg: Don't ignore content in r0 when not specified via "b" or "x"
  s390x/tcg: Fix RISBHG
  s390x/tcg: Fix ALGSI

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-21 19:09:45 +00:00
Peter Maydell fef80ea073 nbd patches for 2021-01-20
- minor resource leak fixes in qemu-nbd
 - ensure proper aio context when nbd server uses iothreads
 - iotest refactorings in preparation for rewriting ./check to be more
 flexible, and preparing for more nbd server reconnect features
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 =XW+E
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2021-01-20' into staging

nbd patches for 2021-01-20

- minor resource leak fixes in qemu-nbd
- ensure proper aio context when nbd server uses iothreads
- iotest refactorings in preparation for rewriting ./check to be more
flexible, and preparing for more nbd server reconnect features

# gpg: Signature made Thu 21 Jan 2021 02:28:19 GMT
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2021-01-20:
  iotests.py: qemu_io(): reuse qemu_tool_pipe_and_status()
  iotests.py: fix qemu_tool_pipe_and_status()
  iotests/264: fix style
  iotests: define group in each iotest
  iotests/294: add shebang line
  iotests: make tests executable
  iotests: fix some whitespaces in test output files
  iotests/303: use dot slash for qcow2.py running
  iotests/277: use dot slash for nbd-fault-injector.py running
  nbd/server: Quiesce coroutines on context switch
  block: Honor blk_set_aio_context() context requirements
  qemu-nbd: Fix a memleak in nbd_client_thread()
  qemu-nbd: Fix a memleak in qemu_nbd_client_list()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-21 10:44:28 +00:00
Eric Farman b2f96f9e4f vfio-ccw: Connect the device request notifier
Now that the vfio-ccw code has a notifier interface to request that
a device be unplugged, let's wire that together.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20210104202057.48048-4-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
Sergio Lopez c7040ff64e block: Honor blk_set_aio_context() context requirements
The documentation for bdrv_set_aio_context_ignore() states this:

 * The caller must own the AioContext lock for the old AioContext of bs, but it
 * must not own the AioContext lock for new_context (unless new_context is the
 * same as the current context of bs).

As blk_set_aio_context() makes use of this function, this rule also
applies to it.

Fix all occurrences where this rule wasn't honored.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20201214170519.223781-2-slp@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:48:08 -06:00
Jiaxun Yang 9c57272507 hw/block/nand: Rename PAGE_SIZE to NAND_PAGE_SIZE
As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

To prevent collosion of definition, we rename PAGE_SIZE here.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210118063808.12471-5-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Peter Maydell f1fcb6851a * Refactor next-cube interrupt and register handling into a proper QOM device
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2021-01-19' into staging

* Refactor next-cube interrupt and register handling into a proper QOM device

# gpg: Signature made Tue 19 Jan 2021 08:15:39 GMT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "huth@tuxfamily.org"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2021-01-19:
  hw/m68k/next-cube: Add missing header comment to next-cube.h
  hw/m68k/next-cube: Add vmstate for NeXTPC device
  hw/m68k/next-cube: Remove unused fields from NeXTState
  hw/m68k/next-cube: Move rtc into NeXTPC struct
  hw/m68k/next-cube: Make next_irq GPIO inputs to NEXT_PC device
  hw/m68k/next-cube: Move int_status and int_mask to NeXTPC struct
  hw/m68k/next-cube: Make next_irq take NeXTPC* as its opaque
  hw/m68k/next-cube: Move scr_ops into NeXTPC device
  hw/m68k/next-cube: Move mmio_ops into NeXTPC device
  hw/m68k/next-cube: Move register/interrupt functionality into a device
  hw/m68k/next-cube: Make next_irq() function static

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-19 11:57:07 +00:00
Peter Maydell 75ca77ec7b hw/m68k/next-cube: Add vmstate for NeXTPC device
Add the vmstate for the new NeXTPC devic; this is in theory
a migration compatibility break, but this machine doesn't have
working migration currently anyway.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-11-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:52 +01:00
Peter Maydell 00a43a6be2 hw/m68k/next-cube: Remove unused fields from NeXTState
The fields scsi_irq, scsi_dma, scsi_reset and fd_irq in
NeXTState are all unused, except in commented out
"this should do something like this" code. Remove the
unused fields. As and when the functionality that might
use them is added, we can put in the correct kind of
wiring (which might or might not need to be a qemu_irq,
but which in any case will need to be in the NeXTPC
device, not in NeXTState).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-10-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:49 +01:00
Peter Maydell 6f0face749 hw/m68k/next-cube: Move rtc into NeXTPC struct
Move the rtc into the NeXTPC struct. Since this is the last
use of the 'backdoor' NextState pointer we can now remove that.

Probably the RTC should be its own device at some point: in hardware
there is a separate MCS1850 RTC chip connected to the Peripheral
Controller via a 1-bit serial interface.  That goes beyond the remit
of the current refactoring, though.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-9-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:46 +01:00
Peter Maydell d9cd403972 hw/m68k/next-cube: Make next_irq GPIO inputs to NEXT_PC device
Make the next_irq function be GPIO inputs to the NEXT_PC
device, rather than a freestanding set of qemu_irq lines.

This fixes a minor Coverity issue where it correctly points
out the trivial memory leak of the memory allocated in the
call to qemu_allocate_irqs().

Fixes: CID 1421962
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-8-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:42 +01:00
Peter Maydell ac99317b5f hw/m68k/next-cube: Move int_status and int_mask to NeXTPC struct
All the code which accesses int_status and int_mask is now doing
so via the NeXTPC->NeXTState indirection, so we can move these
fields into the NeXTPC struct where they belong.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-7-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:40 +01:00
Peter Maydell b497f4a1f8 hw/m68k/next-cube: Make next_irq take NeXTPC* as its opaque
Make the next_irq function take a NeXTPC* as its opaque rather than
the M68kCPU*.  This will make it simpler to turn the next_irq
function into a gpio input line of the NeXTPC device in the next
commit.

For this to work we have to pass the CPU to the NeXTPC device via a
link property, in the same way we do in q800.c (and for the same
reason).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-6-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:39 +01:00
Peter Maydell 1dc7aeae61 hw/m68k/next-cube: Move scr_ops into NeXTPC device
Move the registers handled by the scr_ops struct into the NeXTPC
device.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-5-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:37 +01:00
Peter Maydell 4083163645 hw/m68k/next-cube: Move mmio_ops into NeXTPC device
Move the registers handled by the mmio_ops struct into the NeXTPC
device.  This allows us to also move the scr1 and scr2 data fields.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-4-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:11:35 +01:00
Peter Maydell 660bef3390 hw/m68k/next-cube: Move register/interrupt functionality into a device
Currently the next-cube board code open-codes a lot of handling of
interrupts and some miscellaneous registers.  Move this into a proper
QOM device.

In the real hardware this functionality seems to be the
responsibility of the Peripheral Controller (PC) chip, so name the
device that.

There are several different things that will need to be moved into
this device:
 * the mmio_iops register set
 * the scr_ops register set
 * the next_irq IRQ handling

To ease review, we structure the change as a sequence of commits: in
this first commit we create the skeleton of the NeXTPC device with no
content, but with a backdoor pointer to the NeXTState machine's state
struct so we can move parts of the code and still have refactored and
non-refactored code using the same struct data fields.  Further
commits will move functionality into the new device piece by piece.
At the end we will be able to remove the backdoor pointer because all
the data fields will be in the NeXTPC struct and not the NeXTState
struct.

We'll add the VMState for the new device at the end of all that; this
is in theory a migration compatibility break but this machine does
not currently support migration at all anyway.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-3-peter.maydell@linaro.org>
[huth: Add a comment in front of struct NeXTPC]
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:10:53 +01:00
Peter Maydell c8abcc87b1 hw/m68k/next-cube: Make next_irq() function static
The next_irq() function is global, but isn't actually used anywhere
outside next-cube.c. Make it static.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210115201206.17347-2-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
2021-01-19 09:10:00 +01:00
Daniel Henrique Barboza 2a05350e90 spapr_cpu_core.c: use g_auto* in spapr_create_vcpu()
Use g_autoptr() with Object and g_autofree with the string to
avoid the need of a cleanup path.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210114180628.1675603-6-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Daniel Henrique Barboza 7058904738 spapr_rtas.c: fix identation of rtas_ibm_suspend_me() args
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210114180628.1675603-5-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Daniel Henrique Barboza eb72b63988 spapr_hcall.c: make do_client_architecture_support static
The function is called only inside spapr_hcall.c.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210114180628.1675603-3-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Greg Kurz 73598c75df spapr: Improve handling of memory unplug with old guests
Since commit 1e8b5b1aa1 ("spapr: Allow memory unplug to always succeed")
trying to unplug memory from a guest that doesn't support it (eg. rhel6)
no longer generates an error like it used to. Instead, it leaves the
memory around : only a subsequent reboot or manual use of drmgr within
the guest can complete the hot-unplug sequence. A flag was added to
SpaprMachineClass so that this new behavior only applies to the default
machine type.

We can do better. CAS processes all pending hot-unplug requests. This
means that we don't really care about what the guest supports if
the hot-unplug request happens before CAS.

All guests that we care for, even old ones, set enough bits in OV5
that lead to a non-empty bitmap in spapr->ov5_cas. Use that as a
heuristic to decide if CAS has already occured or not.

Always accept unplug requests that happen before CAS since CAS will
process them. Restore the previous behavior of rejecting them after
CAS when we know that the guest doesn't support memory hot-unplug.

This behavior is suitable for all machine types : this allows to
drop the pre_6_0_memory_unplug flag.

Fixes: 1e8b5b1aa1 ("spapr: Allow memory unplug to always succeed")
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <161012708715.801107.11418801796987916516.stgit@bahia.lan>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
BALATON Zoltan f17969db71 sam460ex: Use type cast macro instead of simple cast
Use the PCI_BUS type cast macro to convert result of qdev_get_child_bus().
Also remove the check for NULL afterwards which should not be needed
because sysbus_create_simple() uses error_abort and we create the PCI
host object here that's expected to have a PCI bus so this shouldn't
fail. Even if it would fail that would be due to a programmer error so
an error message is not necessary.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <a4dc55b56eed3ce899b7bf9835b980a114c52598.1610143658.git.balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
BALATON Zoltan dbc2758921 Revert "ppc4xx: Move common dependency on serial to common option"
This reverts commit e6d5106786 which was added mistakenly. While this
change works it was suggested during review that keeping dependencies
explicit for each board may be better than listing them in a common
option so keep the previous version and revert this change.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <8c65807fc7dc1c4c4f6320f2fd6409a3091c88ff.1610143658.git.balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
BALATON Zoltan fb6d04c075 Revert "sam460ex: Remove FDT_PPC dependency from KConfig"
This reverts commit 038da2adf that was mistakenly added, this
dependency is still needed to get libfdt dependencies even if fdt.o is
not needed by sam460ex.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <15a9fa72eed4f02bdbeaef206803d5e22260e2de.1610143658.git.balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Peter Maydell f7c4acf572 hw/ppc: Remove unused ppcuic_init()
Now we've converted all the callsites to directly create the QOM UIC
device themselves, the ppcuic_init() function is unused and can be
removed. The enum defining PPCUIC symbolic constants can be moved
to the ppc-uic.h header where it more naturally belongs.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20210108171212.16500-5-peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Peter Maydell 71c3c44bc3 hw/ppc/ppc405_uc: Drop use of ppcuic_init()
Switch the ppc405_uc boards to directly creating and configuring the
UIC, rather than doing it via the old ppcuic_init() helper function.

We retain the API feature of ppc405ep_init() where it passes back
something allowing the callers to wire up devices to the UIC if
they need to, even though neither of the callsites currently makes
use of this ability -- instead of passing back the qemu_irq array
we pass back the UIC DeviceState.

This fixes a trivial Coverity-detected memory leak where
we were leaking the array of IRQs returned by ppcuic_init().

Fixes: Coverity CID 1421922
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210108171212.16500-4-peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Peter Maydell 37dc4b5f7c hw/intc/ppc-uic: Make default dcr-base 0xc0, not 0x30
In commit 34d0831f38 the ppc-uic device was added, with a dcr-base
property. The intention was that the default value of dcr-base should be
the one that most of our boards need, so that in the common case they
don't need to specify a property value.

All QEMU boards with a UIC use a dcr-base of 0xc0, with the exception of
sam460ex which has four UICs and so puts them at 0xc0, 0xd0, 0xe0, 0xf0.
So 0xc0 is the obvious right choice for the default dcr-base.

The board code conversions in commits 0270d74ef8 (bamboo) and
c5ac9dc64f (virtex_ml507) assumed that default was 0xc0. Unfortunately
the actual default in 34d0831f38 was 0x30, by mistake, so the
bamboo and virtex_ml507 boards were broken as they were converted
away from ppcuic_init() (which always specifies the dcr_base property
value explicitly).

Set the default dcr-base to 0xc0 as was intended, fixing bamboo and
virtex_ml507.

Fixes: 34d0831f38
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Suggested-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210111213007.7381-1-peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Peter Maydell 7980822342 hw/ppc: Delete unused ppc405cr_init() code
The function ppc405cr_init() has apparently been unused since it was
added in commit 8ecc791352 in 2007.

Remove this dead code, so we don't have to convert it away from using
ppcuic_init().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210108171212.16500-3-peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Peter Maydell 706e944206 hw/ppc/sam460ex: Drop use of ppcuic_init()
Switch the sam460ex board to directly creating and configuring the
UIC, rather than doing it via the old ppcuic_init() helper function.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210108171212.16500-2-peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-01-19 10:20:29 +11:00
Peter Maydell e43d564fa3 Trivial patches 20210118
Fix memory leaks
 Use qemu_log_mask(GUEST_ERROR) rather than error_report().
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Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-6.0-pull-request' into staging

Trivial patches 20210118

Fix memory leaks
Use qemu_log_mask(GUEST_ERROR) rather than error_report().

# gpg: Signature made Mon 18 Jan 2021 11:31:10 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-for-6.0-pull-request:
  hw/ide/ahci: Replace fprintf() by qemu_log_mask(GUEST_ERROR)
  misc/mos6522: Use timer_free() in the finalize function to avoid memleak
  pl031: Use timer_free() in the finalize function to avoid memleaks
  hw/virtio-pci: Replace error_report() by qemu_log_mask(GUEST_ERROR)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-18 15:19:06 +00:00
Peter Maydell 8814b1327c Testing, gdbstub and semihosting patches:
- clean-ups to docker images
   - drop duplicate jobs from shippable
   - prettier tag generation (+gtags)
   - generate browsable source tree
   - more Travis->GitLab migrations
   - fix checkpatch to deal with commits
   - gate gdbstub tests on 8.3.1, expand tests
   - support Xfer:auxv:read gdb packet
   - better gdbstub cleanup
   - use GDB's SVE register layout
   - make arm-compat-semihosting common
   - add riscv semihosting support
   - add HEAPINFO, ELAPSED, TICKFREQ, TMPNAM and ISERROR to semihosting
 -----BEGIN PGP SIGNATURE-----
 
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 =XR0h
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-and-misc-180121-2' into staging

Testing, gdbstub and semihosting patches:

  - clean-ups to docker images
  - drop duplicate jobs from shippable
  - prettier tag generation (+gtags)
  - generate browsable source tree
  - more Travis->GitLab migrations
  - fix checkpatch to deal with commits
  - gate gdbstub tests on 8.3.1, expand tests
  - support Xfer:auxv:read gdb packet
  - better gdbstub cleanup
  - use GDB's SVE register layout
  - make arm-compat-semihosting common
  - add riscv semihosting support
  - add HEAPINFO, ELAPSED, TICKFREQ, TMPNAM and ISERROR to semihosting

# gpg: Signature made Mon 18 Jan 2021 10:09:11 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-testing-and-misc-180121-2: (30 commits)
  semihosting: Implement SYS_ISERROR
  semihosting: Implement SYS_TMPNAM
  semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ
  riscv: Add semihosting support for user mode
  riscv: Add semihosting support
  semihosting: Support SYS_HEAPINFO when env->boot_info is not set
  semihosting: Change internal common-semi interfaces to use CPUState *
  semihosting: Change common-semi API to be architecture-independent
  semihosting: Move ARM semihosting code to shared directories
  target/arm: use official org.gnu.gdb.aarch64.sve layout for registers
  gdbstub: ensure we clean-up when terminated
  gdbstub: drop gdbserver_cleanup in favour of gdb_exit
  gdbstub: drop CPUEnv from gdb_exit()
  gdbstub: add support to Xfer:auxv:read: packet
  gdbstub: implement a softmmu based test
  Revert "tests/tcg/multiarch/Makefile.target: Disable run-gdbstub-sha1 test"
  configure: gate our use of GDB to 8.3.1 or above
  test/guest-debug: echo QEMU command as well
  scripts/checkpatch.pl: fix git-show invocation to include diffstat
  gitlab: migrate the minimal tools and unit tests from Travis
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	default-configs/targets/riscv32-linux-user.mak
#	default-configs/targets/riscv64-linux-user.mak
2021-01-18 12:10:20 +00:00
Philippe Mathieu-Daudé 580e733321 hw/ide/ahci: Replace fprintf() by qemu_log_mask(GUEST_ERROR)
Replace fprintf() calls by qemu_log_mask(LOG_GUEST_ERROR).

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210112112955.1849212-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-18 11:51:26 +01:00
Gan Qixin 3d64fdde67 misc/mos6522: Use timer_free() in the finalize function to avoid memleak
When running device-introspect-test, a memory leak occurred in the mos6522_init
function, this patch use timer_free() in the finalize function to fix it.

ASAN shows memory leak stack:

Direct leak of 96 byte(s) in 2 object(s) allocated from:
    #0 0xfffd5fe9e1f0 in __interceptor_calloc (/lib64/libasan.so.5+0xee1f0)
    #1 0xfffd5f7b6800 in g_malloc0 (/lib64/libglib-2.0.so.0+0x56800)
    #2 0xaaae50303d0c in timer_new_full qemu/include/qemu/timer.h:523
    #3 0xaaae50303d0c in timer_new qemu/include/qemu/timer.h:544
    #4 0xaaae50303d0c in timer_new_ns qemu/include/qemu/timer.h:562
    #5 0xaaae50303d0c in mos6522_init qemu/hw/misc/mos6522.c:490
    #6 0xaaae50b77d70 in object_init_with_type qemu/qom/object.c:371
    #7 0xaaae50b7ae84 in object_initialize_with_type qemu/qom/object.c:515
    #8 0xaaae50b7b0f8 in object_new_with_type qemu/qom/object.c:729
    #9 0xaaae50bb6d58 in qmp_device_list_properties qemu/qom/qom-qmp-cmds.c:153
    #10 0xaaae50d7e1dc in qmp_marshal_device_list_properties qemu/qapi/qapi-commands-qdev.c:59
    #11 0xaaae50dc87a0 in do_qmp_dispatch_bh qemu/qapi/qmp-dispatch.c:110
    #12 0xaaae50d931a0 in aio_bh_call qemu/util/async.c:136

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210112112705.380534-3-ganqixin@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-18 11:51:26 +01:00
Gan Qixin b026d4a6e6 pl031: Use timer_free() in the finalize function to avoid memleaks
When running device-introspect-test, a memory leak occurred in the pl031_init
function, this patch use timer_free() in the finalize function to fix it.

ASAN shows memory leak stack:

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0xffffab97e1f0 in __interceptor_calloc (/lib64/libasan.so.5+0xee1f0)
    #1 0xffffab256800 in g_malloc0 (/lib64/libglib-2.0.so.0+0x56800)
    #2 0xaaabf5621cfc in timer_new_full qemu/include/qemu/timer.h:523
    #3 0xaaabf5621cfc in timer_new qemu/include/qemu/timer.h:544
    #4 0xaaabf5621cfc in timer_new_ns qemu/include/qemu/timer.h:562
    #5 0xaaabf5621cfc in pl031_init qemu/hw/rtc/pl031.c:194
    #6 0xaaabf6339f6c in object_initialize_with_type qemu/qom/object.c:515
    #7 0xaaabf633a1e0 in object_new_with_type qemu/qom/object.c:729
    #8 0xaaabf6375e40 in qmp_device_list_properties qemu/qom/qom-qmp-cmds.c:153
    #9 0xaaabf5a95540 in qdev_device_help qemu/softmmu/qdev-monitor.c:283
    #10 0xaaabf5a96940 in qmp_device_add qemu/softmmu/qdev-monitor.c:801
    #11 0xaaabf5a96e70 in hmp_device_add qemu/softmmu/qdev-monitor.c:916
    #12 0xaaabf5ac0a2c in handle_hmp_command qemu/monitor/hmp.c:1100

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210112112705.380534-2-ganqixin@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-18 11:51:26 +01:00
Philippe Mathieu-Daudé a82185880e hw/virtio-pci: Replace error_report() by qemu_log_mask(GUEST_ERROR)
Replace I/O write error reported with error_report() by
qemu_log_mask(GUEST_ERROR) which allow filtering.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20201210172834.178052-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-18 11:51:26 +01:00
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
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