Merge tag 'pull-ppc-for-10.0-1-20250311' of https://gitlab.com/npiggin/qemu into staging

* Next round of XIVE patches...

* tag 'pull-ppc-for-10.0-1-20250311' of https://gitlab.com/npiggin/qemu: (72 commits)
  docs/system/ppc/amigang.rst: Update for NVRAM emulation
  ppc/amigaone: Add #defines for memory map constants
  ppc/amigaone: Add kernel and initrd support
  ppc/amigaone: Add default environment
  ppc/amigaone: Implement NVRAM emulation
  ppc/amigaone: Simplify replacement dummy_fw
  spapr: Generate random HASHPKEYR for spapr machines
  target/ppc: Avoid warning message for zero process table entries
  target/ppc: Wire up BookE ATB registers for e500 family
  target/ppc: fix timebase register reset state
  spapr: nested: Add support for reporting Hostwide state counter
  ppc: spapr: Enable 2nd DAWR on Power10 pSeries machine
  ppc: Enable 2nd DAWR support on Power10 PowerNV machine
  hw/ppc/epapr: Do not swap ePAPR magic value
  hw/ppc/spapr: Convert DIRTY_HPTE() macro as hpte_set_dirty() method
  hw/ppc/spapr: Convert CLEAN_HPTE() macro as hpte_set_clean() method
  hw/ppc/spapr: Convert HPTE_DIRTY() macro as hpte_is_dirty() method
  hw/ppc/spapr: Convert HPTE_VALID() macro as hpte_is_valid() method
  hw/ppc/spapr: Convert HPTE() macro as hpte_get_ptr() method
  target/ppc: Restrict ATTN / SCV / PMINSN helpers to TCG
  ...

[Fix __packed macro redefinition on FreeBSD 14 hosts:
../hw/ppc/pnv_occ.c:397:9: error: '__packed' macro redefined [-Werror,-Wmacro-redefined]
  397 | #define __packed QEMU_PACKED
      |         ^
/usr/include/sys/cdefs.h:217:9: note: previous definition is here
  217 | #define __packed        __attribute__((__packed__))
      |         ^
--Stefan]

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

5 files changed, 32 insertions, 17 deletions

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 589951b136..e2b4f077d4 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -266,6 +266,15 @@ in the QEMU object model anymore. ``Sun-UltraSparc-IIIi+`` and
 but for consistency these will get removed in a future release, too.
 Use ``Sun-UltraSparc-IIIi-plus`` and ``Sun-UltraSparc-IV-plus`` instead.
 
+PPC 405 CPUs (since 10.0)
+'''''''''''''''''''''''''
+
+The PPC 405 CPU has no known users and the ``ref405ep`` machine was
+removed in QEMU 10.0. Since the IBM POWER [8-11] processors uses an
+embedded 405 for power management (OCC) and other internal tasks, it
+is theoretically possible to use QEMU to model them. Let's keep the
+CPU implementation for a while before removing all support.
+
 System emulator machines
 ------------------------
 
@@ -277,14 +286,6 @@ deprecated; use the new name ``dtb-randomness`` instead. The new name
 better reflects the way this property affects all random data within
 the device tree blob, not just the ``kaslr-seed`` node.
 
-PPC 405 ``ref405ep`` machine (since 9.1)
-''''''''''''''''''''''''''''''''''''''''
-
-The ``ref405ep`` machine and PPC 405 CPU have no known users, firmware
-images are not available, OpenWRT dropped support in 2019, U-Boot in
-2017, Linux also is dropping support in 2024. It is time to let go of
-this ancient hardware and focus on newer CPUs and platforms.
-
 Big-Endian variants of MicroBlaze ``petalogix-ml605`` and ``xlnx-zynqmp-pmu`` machines (since 9.2)
 ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
 
diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
index 156c0c253c..2527a91795 100644
--- a/docs/about/removed-features.rst
+++ b/docs/about/removed-features.rst
@@ -1064,6 +1064,13 @@ for all machine types using the PXA2xx and OMAP2 SoCs. We are also
 dropping the ``cheetah`` OMAP1 board, because we don't have any
 test images for it and don't know of anybody who does.
 
+ppc ``ref405ep`` machine (removed in 10.0)
+''''''''''''''''''''''''''''''''''''''''''
+
+This machine was removed because PPC 405 CPU have no known users,
+firmware images are not available, OpenWRT dropped support in 2019,
+U-Boot in 2017, and Linux in 2024.
+
 linux-user mode CPUs
 --------------------
 
diff --git a/docs/system/ppc/amigang.rst b/docs/system/ppc/amigang.rst
index e2c9cb74b7..21bb14ed09 100644
--- a/docs/system/ppc/amigang.rst
+++ b/docs/system/ppc/amigang.rst
@@ -21,6 +21,7 @@ Emulated devices
  * VIA VT82C686B south bridge
  * PCI VGA compatible card (guests may need other card instead)
  * PS/2 keyboard and mouse
+ * 4 KiB NVRAM (use ``-drive if=mtd,format=raw,file=nvram.bin`` to keep contents persistent)
 
 Firmware
 --------
@@ -54,14 +55,14 @@ To boot the system run:
                     -cdrom "A1 Linux Net Installer.iso" \
                     -device ati-vga,model=rv100,romfile=VGABIOS-lgpl-latest.bin
 
-From the firmware menu that appears select ``Boot sequence`` →
-``Amiga Multiboot Options`` and set ``Boot device 1`` to
-``Onboard VIA IDE CDROM``. Then hit escape until the main screen appears again,
-hit escape once more and from the exit menu that appears select either
-``Save settings and exit`` or ``Use settings for this session only``. It may
-take a long time loading the kernel into memory but eventually it boots and the
-installer becomes visible. The ``ati-vga`` RV100 emulation is not
-complete yet so only frame buffer works, DRM and 3D is not available.
+If a firmware menu appears, select ``Boot sequence`` → ``Amiga Multiboot Options``
+and set ``Boot device 1`` to ``Onboard VIA IDE CDROM``. Then hit escape until
+the main screen appears again, hit escape once more and from the exit menu that
+appears select either ``Save settings and exit`` or ``Use settings for this
+session only``. It may take a long time loading the kernel into memory but
+eventually it boots and the installer becomes visible. The ``ati-vga`` RV100
+emulation is not complete yet so only frame buffer works, DRM and 3D is not
+available.
 
 Genesi/bPlan Pegasos II (``pegasos2``)
 ======================================
diff --git a/docs/system/ppc/embedded.rst b/docs/system/ppc/embedded.rst
index af3b3d9fa4..5cb7d98b45 100644
--- a/docs/system/ppc/embedded.rst
+++ b/docs/system/ppc/embedded.rst
@@ -4,6 +4,5 @@ Embedded family boards
 - ``bamboo``               bamboo
 - ``mpc8544ds``            mpc8544ds
 - ``ppce500``              generic paravirt e500 platform
-- ``ref405ep``             ref405ep
 - ``sam460ex``             aCube Sam460ex
 - ``virtex-ml507``         Xilinx Virtex ML507 reference design
diff --git a/docs/system/ppc/powernv.rst b/docs/system/ppc/powernv.rst
index de7a807ac7..f3ec2cc69c 100644
--- a/docs/system/ppc/powernv.rst
+++ b/docs/system/ppc/powernv.rst
@@ -195,6 +195,13 @@ Use a MTD drive to add a PNOR to the machine, and get a NVRAM :
 
   -drive file=./witherspoon.pnor,format=raw,if=mtd
 
+If no mtd drive is provided, the powernv platform will create a default
+PNOR device using a tiny formatted PNOR in pc-bios/pnv-pnor.bin opened
+read-only (PNOR changes will be persistent across reboots but not across
+invocations of QEMU). If no defaults are used, an erased 128MB PNOR is
+provided (which skiboot will probably not recognize since it is not
+formatted).
+
 Maintainer contact information
 ------------------------------