Merge tag 'pull-target-arm-20250225' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * hw/arm/smmuv3: Fill u.f_cd_fetch.addr for SMMU_EVT_F_CD_FETCH
 * hw/arm/virt: Support larger highmem MMIO regions
 * machine: Centralize -machine dumpdtb option handling and report
   attempt to dump nonexistent DTB as an error
 * fpu: remove target ifdefs and build it only once
 * target/arm: Refactor to move TCG-only vfp_helper code into tcg/
 * target/arm/hvf: Disable SME feature
 * target/arm/hvf: sign extend the data for a load operation when SSE=1
 * hw/misc/npcm_clk: fix buffer-overflow
 * hw/arm: Add i.MX 8M Plus EVK board ("imx8mp-evk")

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# 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]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20250225' of https://git.linaro.org/people/pmaydell/qemu-arm: (43 commits)
  hw/arm/fsl-imx8mp: Add on-chip RAM
  hw/arm/fsl-imx8mp: Add USB support
  hw/arm/fsl-imx8mp: Add Ethernet controller
  hw/arm/fsl-imx8mp: Implement general purpose timers
  hw/arm/fsl-imx8mp: Add watchdog support
  hw/arm/fsl-imx8mp: Add SPI controllers
  hw/arm/fsl-imx8mp: Add I2C controllers
  hw/arm/fsl-imx8mp: Add GPIO controllers
  hw/arm/fsl-imx8mp: Add PCIe support
  hw/arm/fsl-imx8mp: Add USDHC storage controllers
  hw/arm/fsl-imx8mp: Add SNVS
  hw/arm/fsl-imx8mp: Implement clock tree
  hw/arm: Add i.MX 8M Plus EVK board
  hw/gpio/pca955*: Move Kconfig switches next to implementations
  hw/pci-host/designware: Prevent device attachment on internal PCIe root bus
  hw/usb/hcd-dwc3: Align global registers size with Linux
  hw/misc/npcm_clk: fix buffer-overflow
  target/arm/hvf: sign extend the data for a load operation when SSE=1
  target/arm/hvf: Disable SME feature
  target/arm: Rename vfp_helper.c to vfp_fpscr.c
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

3 files changed, 75 insertions, 0 deletions

diff --git a/docs/system/arm/imx8mp-evk.rst b/docs/system/arm/imx8mp-evk.rst
new file mode 100644
index 0000000000..00527b0cbe
--- /dev/null
+++ b/docs/system/arm/imx8mp-evk.rst
@@ -0,0 +1,70 @@
+NXP i.MX 8M Plus Evaluation Kit (``imx8mp-evk``)
+================================================
+
+The ``imx8mp-evk`` machine models the i.MX 8M Plus Evaluation Kit, based on an
+i.MX 8M Plus SoC.
+
+Supported devices
+-----------------
+
+The ``imx8mp-evk`` machine implements the following devices:
+
+ * Up to 4 Cortex-A53 cores
+ * Generic Interrupt Controller (GICv3)
+ * 4 UARTs
+ * 3 USDHC Storage Controllers
+ * 1 Designware PCI Express Controller
+ * 1 Ethernet Controller
+ * 2 Designware USB 3 Controllers
+ * 5 GPIO Controllers
+ * 6 I2C Controllers
+ * 3 SPI Controllers
+ * 3 Watchdogs
+ * 6 General Purpose Timers
+ * Secure Non-Volatile Storage (SNVS) including an RTC
+ * Clock Tree
+
+Boot options
+------------
+
+The ``imx8mp-evk`` machine can start a Linux kernel directly using the standard
+``-kernel`` functionality.
+
+Direct Linux Kernel Boot
+''''''''''''''''''''''''
+
+Probably the easiest way to get started with a whole Linux system on the machine
+is to generate an image with Buildroot. Version 2024.11.1 is tested at the time
+of writing and involves three steps. First run the following commands in the
+toplevel directory of the Buildroot source tree:
+
+.. code-block:: bash
+
+  $ make freescale_imx8mpevk_defconfig
+  $ make
+
+Once finished successfully there is an ``output/image`` subfolder. Navigate into
+it and resize the SD card image to a power of two:
+
+.. code-block:: bash
+
+  $ qemu-img resize sdcard.img 256M
+
+Finally, the device tree needs to be patched with the following commands which
+will remove the ``cpu-idle-states`` properties from CPU nodes:
+
+.. code-block:: bash
+
+  $ dtc imx8mp-evk.dtb | sed '/cpu-idle-states/d' > imx8mp-evk-patched.dts
+  $ dtc imx8mp-evk-patched.dts -o imx8mp-evk-patched.dtb
+
+Now that everything is prepared the machine can be started as follows:
+
+.. code-block:: bash
+
+  $ qemu-system-aarch64 -M imx8mp-evk -smp 4 -m 3G \
+      -display none -serial null -serial stdio \
+      -kernel Image \
+      -dtb imx8mp-evk-patched.dtb \
+      -append "root=/dev/mmcblk2p2" \
+      -drive file=sdcard.img,if=sd,bus=2,format=raw,id=mmcblk2
diff --git a/docs/system/arm/virt.rst b/docs/system/arm/virt.rst
index 0c9c2ce035..adf446c0a2 100644
--- a/docs/system/arm/virt.rst
+++ b/docs/system/arm/virt.rst
@@ -144,6 +144,10 @@ highmem-mmio
   Set ``on``/``off`` to enable/disable the high memory region for PCI MMIO.
   The default is ``on``.
 
+highmem-mmio-size
+  Set the high memory region size for PCI MMIO. Must be a power of 2 and
+  greater than or equal to the default size (512G).
+
 gic-version
   Specify the version of the Generic Interrupt Controller (GIC) to provide.
   Valid values are:
diff --git a/docs/system/target-arm.rst b/docs/system/target-arm.rst
index 9aaa9c414c..a43ec8f10e 100644
--- a/docs/system/target-arm.rst
+++ b/docs/system/target-arm.rst
@@ -95,6 +95,7 @@ Board-specific documentation
    arm/imx25-pdk
    arm/mcimx6ul-evk
    arm/mcimx7d-sabre
+   arm/imx8mp-evk
    arm/orangepi
    arm/raspi
    arm/collie