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target-arm queue:

Browse source 
* Implement FEAT_NMI and NMI support in the GICv3
  * hw/dma: avoid apparent overflow in soc_dma_set_request
  * linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code
  * Add ResetType argument to Resettable hold and exit phase methods
  * Add RESET_TYPE_SNAPSHOT_LOAD ResetType
  * Implement STM32L4x5 USART
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Merge tag 'pull-target-arm-20240425' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * Implement FEAT_NMI and NMI support in the GICv3
 * hw/dma: avoid apparent overflow in soc_dma_set_request
 * linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code
 * Add ResetType argument to Resettable hold and exit phase methods
 * Add RESET_TYPE_SNAPSHOT_LOAD ResetType
 * Implement STM32L4x5 USART

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# gpg: Signature made Thu 25 Apr 2024 03:36:03 AM PDT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [full]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [unknown]

* tag 'pull-target-arm-20240425' of https://git.linaro.org/people/pmaydell/qemu-arm: (37 commits)
  tests/qtest: Add tests for the STM32L4x5 USART
  hw/arm: Add the USART to the stm32l4x5 SoC
  hw/char/stm32l4x5_usart: Add options for serial parameters setting
  hw/char/stm32l4x5_usart: Enable serial read and write
  hw/char: Implement STM32L4x5 USART skeleton
  reset: Add RESET_TYPE_SNAPSHOT_LOAD
  docs/devel/reset: Update to new API for hold and exit phase methods
  hw, target: Add ResetType argument to hold and exit phase methods
  scripts/coccinelle: New script to add ResetType to hold and exit phases
  allwinner-i2c, adm1272: Use device_cold_reset() for software-triggered reset
  hw/misc: Don't special case RESET_TYPE_COLD in npcm7xx_clk, gcr
  linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code
  hw/dma: avoid apparent overflow in soc_dma_set_request
  hw/arm/virt: Enable NMI support in the GIC if the CPU has FEAT_NMI
  target/arm: Add FEAT_NMI to max
  hw/intc/arm_gicv3: Report the VINMI interrupt
  hw/intc/arm_gicv3: Report the NMI interrupt in gicv3_cpuif_update()
  hw/intc/arm_gicv3: Implement NMI interrupt priority
  hw/intc/arm_gicv3: Handle icv_nmiar1_read() for icc_nmiar1_read()
  hw/intc/arm_gicv3: Add NMI handling CPU interface registers
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-04-25 08:07:45 -07:00
commit 83baec642a
133 changed files with 2239 additions and 537 deletions
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25
docs/devel/reset.rst
View file

@ -27,9 +27,7 @@ instantly reset an object, without keeping it in reset state, just call
``resettable_reset()``. These functions take two parameters: a pointer to the
object to reset and a reset type.
Several types of reset will be supported. For now only cold reset is defined;
others may be added later. The Resettable interface handles reset types with an
enum:
The Resettable interface handles reset types with an enum ``ResetType``:
``RESET_TYPE_COLD``
Cold reset is supported by every resettable object. In QEMU, it means we reset
@ -37,6 +35,19 @@ enum:
from what is a real hardware cold reset. It differs from other resets (like
warm or bus resets) which may keep certain parts untouched.
``RESET_TYPE_SNAPSHOT_LOAD``
This is called for a reset which is being done to put the system into a
clean state prior to loading a snapshot. (This corresponds to a reset
with ``SHUTDOWN_CAUSE_SNAPSHOT_LOAD``.) Almost all devices should treat
this the same as ``RESET_TYPE_COLD``. The main exception is devices which
have some non-deterministic state they want to reinitialize to a different
value on each cold reset, such as RNG seed information, and which they
must not reinitialize on a snapshot-load reset.
Devices which implement reset methods must treat any unknown ``ResetType``
as equivalent to ``RESET_TYPE_COLD``; this will reduce the amount of
existing code we need to change if we add more types in future.
Calling ``resettable_reset()`` is equivalent to calling
``resettable_assert_reset()`` then ``resettable_release_reset()``. It is
possible to interleave multiple calls to these three functions. There may
@ -150,25 +161,25 @@ in reset.
mydev->var = 0;
}
static void mydev_reset_hold(Object *obj)
static void mydev_reset_hold(Object *obj, ResetType type)
{
MyDevClass *myclass = MYDEV_GET_CLASS(obj);
MyDevState *mydev = MYDEV(obj);
/* call parent class hold phase */
if (myclass->parent_phases.hold) {
myclass->parent_phases.hold(obj);
myclass->parent_phases.hold(obj, type);
}
/* set an IO */
qemu_set_irq(mydev->irq, 1);
}
static void mydev_reset_exit(Object *obj)
static void mydev_reset_exit(Object *obj, ResetType type)
{
MyDevClass *myclass = MYDEV_GET_CLASS(obj);
MyDevState *mydev = MYDEV(obj);
/* call parent class exit phase */
if (myclass->parent_phases.exit) {
myclass->parent_phases.exit(obj);
myclass->parent_phases.exit(obj, type);
}
/* clear an IO */
qemu_set_irq(mydev->irq, 0);