hw/arm: Add i.MX 8M Plus EVK board

As a first step, implement the bare minimum: CPUs, RAM, interrupt controller,
serial. All other devices of the A53 memory map are represented as
TYPE_UNIMPLEMENTED_DEVICE, i.e. the whole memory map is provided. This allows
for running Linux without it crashing due to invalid memory accesses.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-id: 20250223114708.1780-5-shentey@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: drop 'static const' from serial_table[] definition to avoid
 compile failure on GCC 7.5]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/hw/arm/imx8mp-evk.c b/hw/arm/imx8mp-evk.c
new file mode 100644
index 0000000000..2756d4c21c
--- /dev/null
+++ b/hw/arm/imx8mp-evk.c
@@ -0,0 +1,55 @@
+/*
+ * NXP i.MX 8M Plus Evaluation Kit System Emulation
+ *
+ * Copyright (c) 2024, Bernhard Beschow <shentey@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "exec/address-spaces.h"
+#include "hw/arm/boot.h"
+#include "hw/arm/fsl-imx8mp.h"
+#include "hw/boards.h"
+#include "system/qtest.h"
+#include "qemu/error-report.h"
+#include "qapi/error.h"
+
+static void imx8mp_evk_init(MachineState *machine)
+{
+    static struct arm_boot_info boot_info;
+    FslImx8mpState *s;
+
+    if (machine->ram_size > FSL_IMX8MP_RAM_SIZE_MAX) {
+        error_report("RAM size " RAM_ADDR_FMT " above max supported (%08" PRIx64 ")",
+                     machine->ram_size, FSL_IMX8MP_RAM_SIZE_MAX);
+        exit(1);
+    }
+
+    boot_info = (struct arm_boot_info) {
+        .loader_start = FSL_IMX8MP_RAM_START,
+        .board_id = -1,
+        .ram_size = machine->ram_size,
+        .psci_conduit = QEMU_PSCI_CONDUIT_SMC,
+    };
+
+    s = FSL_IMX8MP(object_new(TYPE_FSL_IMX8MP));
+    object_property_add_child(OBJECT(machine), "soc", OBJECT(s));
+    qdev_realize(DEVICE(s), NULL, &error_fatal);
+
+    memory_region_add_subregion(get_system_memory(), FSL_IMX8MP_RAM_START,
+                                machine->ram);
+
+    if (!qtest_enabled()) {
+        arm_load_kernel(&s->cpu[0], machine, &boot_info);
+    }
+}
+
+static void imx8mp_evk_machine_init(MachineClass *mc)
+{
+    mc->desc = "NXP i.MX 8M Plus EVK Board";
+    mc->init = imx8mp_evk_init;
+    mc->max_cpus = FSL_IMX8MP_NUM_CPUS;
+    mc->default_ram_id = "imx8mp-evk.ram";
+}
+DEFINE_MACHINE("imx8mp-evk", imx8mp_evk_machine_init)