hw/microblaze: Remove the big-endian variants of ml605 and xlnx-zynqmp-pmu

Both machines were added with little-endian in mind only (the
"endianness" CPU property was hard-wired to "true", see commits
133d23b3ad1 and a88bbb006a52), so the variants that showed up
on the big endian target likely never worked. We deprecated these
non-working machine variants two releases ago, and so far nobody
complained, so it should be fine now to disable them. Hard-wire
the machines to little endian now.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20250515132019.569365-4-thuth@redhat.com>

4 files changed, 14 insertions, 23 deletions

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 4715d1e..863779a 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -315,12 +315,6 @@ 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.
 
-Big-Endian variants of MicroBlaze ``petalogix-ml605`` and ``xlnx-zynqmp-pmu`` machines (since 9.2)
-''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-Both ``petalogix-ml605`` and ``xlnx-zynqmp-pmu`` were added for little endian
-CPUs. Big endian support is not tested.
-
 Mips ``mipssim`` machine (since 10.0)
 '''''''''''''''''''''''''''''''''''''
 
diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
index 4819cb4..d7c2113 100644
--- a/docs/about/removed-features.rst
+++ b/docs/about/removed-features.rst
@@ -1091,6 +1091,15 @@ 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.
 
+Big-Endian variants of ``petalogix-ml605`` and ``xlnx-zynqmp-pmu`` machines (removed in 10.1)
+'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+Both the MicroBlaze ``petalogix-ml605`` and ``xlnx-zynqmp-pmu`` machines
+were added for little endian CPUs. Big endian support was never tested
+and likely never worked. Starting with QEMU v10.1, the machines are now
+only available as little-endian machines.
+
+
 linux-user mode CPUs
 --------------------
 
diff --git a/hw/microblaze/petalogix_ml605_mmu.c b/hw/microblaze/petalogix_ml605_mmu.c
index bea6b68..6e923c4 100644
--- a/hw/microblaze/petalogix_ml605_mmu.c
+++ b/hw/microblaze/petalogix_ml605_mmu.c
@@ -80,8 +80,6 @@ petalogix_ml605_init(MachineState *machine)
     MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
     qemu_irq irq[32];
-    EndianMode endianness = TARGET_BIG_ENDIAN ? ENDIAN_MODE_BIG
-                                              : ENDIAN_MODE_LITTLE;
 
     /* init CPUs */
     cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
@@ -113,7 +111,7 @@ petalogix_ml605_init(MachineState *machine)
 
 
     dev = qdev_new("xlnx.xps-intc");
-    qdev_prop_set_enum(dev, "endianness", endianness);
+    qdev_prop_set_enum(dev, "endianness", ENDIAN_MODE_LITTLE);
     qdev_prop_set_uint32(dev, "kind-of-intr", 1 << TIMER_IRQ);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
@@ -129,7 +127,7 @@ petalogix_ml605_init(MachineState *machine)
 
     /* 2 timers at irq 2 @ 100 Mhz.  */
     dev = qdev_new("xlnx.xps-timer");
-    qdev_prop_set_enum(dev, "endianness", endianness);
+    qdev_prop_set_enum(dev, "endianness", ENDIAN_MODE_LITTLE);
     qdev_prop_set_uint32(dev, "one-timer-only", 0);
     qdev_prop_set_uint32(dev, "clock-frequency", 100 * 1000000);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
@@ -177,7 +175,7 @@ petalogix_ml605_init(MachineState *machine)
         SSIBus *spi;
 
         dev = qdev_new("xlnx.xps-spi");
-        qdev_prop_set_enum(dev, "endianness", endianness);
+        qdev_prop_set_enum(dev, "endianness", ENDIAN_MODE_LITTLE);
         qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
         busdev = SYS_BUS_DEVICE(dev);
         sysbus_realize_and_unref(busdev, &error_fatal);
@@ -218,12 +216,7 @@ petalogix_ml605_init(MachineState *machine)
 
 static void petalogix_ml605_machine_init(MachineClass *mc)
 {
-    if (TARGET_BIG_ENDIAN) {
-        mc->desc = "PetaLogix linux refdesign for xilinx ml605 (big endian)";
-        mc->deprecation_reason = "big endian support is not tested";
-    } else {
-        mc->desc = "PetaLogix linux refdesign for xilinx ml605 (little endian)";
-    }
+    mc->desc = "PetaLogix linux refdesign for xilinx ml605 (little endian)";
     mc->init = petalogix_ml605_init;
 }
 
diff --git a/hw/microblaze/xlnx-zynqmp-pmu.c b/hw/microblaze/xlnx-zynqmp-pmu.c
index ed40b5f..e909802 100644
--- a/hw/microblaze/xlnx-zynqmp-pmu.c
+++ b/hw/microblaze/xlnx-zynqmp-pmu.c
@@ -181,12 +181,7 @@ static void xlnx_zynqmp_pmu_init(MachineState *machine)
 
 static void xlnx_zynqmp_pmu_machine_init(MachineClass *mc)
 {
-    if (TARGET_BIG_ENDIAN) {
-        mc->desc = "Xilinx ZynqMP PMU machine (big endian)";
-        mc->deprecation_reason = "big endian support is not tested";
-    } else {
-        mc->desc = "Xilinx ZynqMP PMU machine (little endian)";
-    }
+    mc->desc = "Xilinx ZynqMP PMU machine (little endian)";
     mc->init = xlnx_zynqmp_pmu_init;
 }