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-rw-r--r--hw/arm/Makefile.objs1
-rw-r--r--hw/arm/musca.c197
2 files changed, 198 insertions, 0 deletions
diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index fa40e8d641..fa57c7c770 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -35,6 +35,7 @@ obj-$(CONFIG_ASPEED_SOC) += aspeed_soc.o aspeed.o
obj-$(CONFIG_MPS2) += mps2.o
obj-$(CONFIG_MPS2) += mps2-tz.o
obj-$(CONFIG_MSF2) += msf2-soc.o msf2-som.o
+obj-$(CONFIG_MUSCA) += musca.o
obj-$(CONFIG_ARMSSE) += armsse.o
obj-$(CONFIG_FSL_IMX7) += fsl-imx7.o mcimx7d-sabre.o
obj-$(CONFIG_ARM_SMMUV3) += smmu-common.o smmuv3.o
diff --git a/hw/arm/musca.c b/hw/arm/musca.c
new file mode 100644
index 0000000000..cc624c7d16
--- /dev/null
+++ b/hw/arm/musca.c
@@ -0,0 +1,197 @@
+/*
+ * Arm Musca-B1 test chip board emulation
+ *
+ * Copyright (c) 2019 Linaro Limited
+ * Written by Peter Maydell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 or
+ * (at your option) any later version.
+ */
+
+/*
+ * The Musca boards are a reference implementation of a system using
+ * the SSE-200 subsystem for embedded:
+ * https://developer.arm.com/products/system-design/development-boards/iot-test-chips-and-boards/musca-a-test-chip-board
+ * https://developer.arm.com/products/system-design/development-boards/iot-test-chips-and-boards/musca-b-test-chip-board
+ * We model the A and B1 variants of this board, as described in the TRMs:
+ * http://infocenter.arm.com/help/topic/com.arm.doc.101107_0000_00_en/index.html
+ * http://infocenter.arm.com/help/topic/com.arm.doc.101312_0000_00_en/index.html
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "qapi/error.h"
+#include "exec/address-spaces.h"
+#include "hw/arm/arm.h"
+#include "hw/arm/armsse.h"
+#include "hw/boards.h"
+#include "hw/core/split-irq.h"
+
+#define MUSCA_NUMIRQ_MAX 96
+
+typedef enum MuscaType {
+ MUSCA_A,
+ MUSCA_B1,
+} MuscaType;
+
+typedef struct {
+ MachineClass parent;
+ MuscaType type;
+ uint32_t init_svtor;
+ int sram_addr_width;
+ int num_irqs;
+} MuscaMachineClass;
+
+typedef struct {
+ MachineState parent;
+
+ ARMSSE sse;
+ SplitIRQ cpu_irq_splitter[MUSCA_NUMIRQ_MAX];
+} MuscaMachineState;
+
+#define TYPE_MUSCA_MACHINE "musca"
+#define TYPE_MUSCA_A_MACHINE MACHINE_TYPE_NAME("musca-a")
+#define TYPE_MUSCA_B1_MACHINE MACHINE_TYPE_NAME("musca-b1")
+
+#define MUSCA_MACHINE(obj) \
+ OBJECT_CHECK(MuscaMachineState, obj, TYPE_MUSCA_MACHINE)
+#define MUSCA_MACHINE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(MuscaMachineClass, obj, TYPE_MUSCA_MACHINE)
+#define MUSCA_MACHINE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(MuscaMachineClass, klass, TYPE_MUSCA_MACHINE)
+
+/*
+ * Main SYSCLK frequency in Hz
+ * TODO this should really be different for the two cores, but we
+ * don't model that in our SSE-200 model yet.
+ */
+#define SYSCLK_FRQ 40000000
+
+static void musca_init(MachineState *machine)
+{
+ MuscaMachineState *mms = MUSCA_MACHINE(machine);
+ MuscaMachineClass *mmc = MUSCA_MACHINE_GET_CLASS(mms);
+ MachineClass *mc = MACHINE_GET_CLASS(machine);
+ MemoryRegion *system_memory = get_system_memory();
+ DeviceState *ssedev;
+ int i;
+
+ assert(mmc->num_irqs <= MUSCA_NUMIRQ_MAX);
+
+ if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {
+ error_report("This board can only be used with CPU %s",
+ mc->default_cpu_type);
+ exit(1);
+ }
+
+ sysbus_init_child_obj(OBJECT(machine), "sse-200", &mms->sse,
+ sizeof(mms->sse), TYPE_SSE200);
+ ssedev = DEVICE(&mms->sse);
+ object_property_set_link(OBJECT(&mms->sse), OBJECT(system_memory),
+ "memory", &error_fatal);
+ qdev_prop_set_uint32(ssedev, "EXP_NUMIRQ", mmc->num_irqs);
+ qdev_prop_set_uint32(ssedev, "init-svtor", mmc->init_svtor);
+ qdev_prop_set_uint32(ssedev, "SRAM_ADDR_WIDTH", mmc->sram_addr_width);
+ qdev_prop_set_uint32(ssedev, "MAINCLK", SYSCLK_FRQ);
+ object_property_set_bool(OBJECT(&mms->sse), true, "realized",
+ &error_fatal);
+
+ /*
+ * We need to create splitters to feed the IRQ inputs
+ * for each CPU in the SSE-200 from each device in the board.
+ */
+ for (i = 0; i < mmc->num_irqs; i++) {
+ char *name = g_strdup_printf("musca-irq-splitter%d", i);
+ SplitIRQ *splitter = &mms->cpu_irq_splitter[i];
+
+ object_initialize_child(OBJECT(machine), name,
+ splitter, sizeof(*splitter),
+ TYPE_SPLIT_IRQ, &error_fatal, NULL);
+ g_free(name);
+
+ object_property_set_int(OBJECT(splitter), 2, "num-lines",
+ &error_fatal);
+ object_property_set_bool(OBJECT(splitter), true, "realized",
+ &error_fatal);
+ qdev_connect_gpio_out(DEVICE(splitter), 0,
+ qdev_get_gpio_in_named(ssedev, "EXP_IRQ", i));
+ qdev_connect_gpio_out(DEVICE(splitter), 1,
+ qdev_get_gpio_in_named(ssedev,
+ "EXP_CPU1_IRQ", i));
+ }
+
+ armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename, 0x2000000);
+}
+
+static void musca_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->default_cpus = 2;
+ mc->min_cpus = mc->default_cpus;
+ mc->max_cpus = mc->default_cpus;
+ mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m33");
+ mc->init = musca_init;
+}
+
+static void musca_a_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ MuscaMachineClass *mmc = MUSCA_MACHINE_CLASS(oc);
+
+ mc->desc = "ARM Musca-A board (dual Cortex-M33)";
+ mmc->type = MUSCA_A;
+ mmc->init_svtor = 0x10200000;
+ mmc->sram_addr_width = 15;
+ mmc->num_irqs = 64;
+}
+
+static void musca_b1_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ MuscaMachineClass *mmc = MUSCA_MACHINE_CLASS(oc);
+
+ mc->desc = "ARM Musca-B1 board (dual Cortex-M33)";
+ mmc->type = MUSCA_B1;
+ /*
+ * This matches the DAPlink firmware which boots from QSPI. There
+ * is also a firmware blob which boots from the eFlash, which
+ * uses init_svtor = 0x1A000000. QEMU doesn't currently support that,
+ * though we could in theory expose a machine property on the command
+ * line to allow the user to request eFlash boot.
+ */
+ mmc->init_svtor = 0x10000000;
+ mmc->sram_addr_width = 17;
+ mmc->num_irqs = 96;
+}
+
+static const TypeInfo musca_info = {
+ .name = TYPE_MUSCA_MACHINE,
+ .parent = TYPE_MACHINE,
+ .abstract = true,
+ .instance_size = sizeof(MuscaMachineState),
+ .class_size = sizeof(MuscaMachineClass),
+ .class_init = musca_class_init,
+};
+
+static const TypeInfo musca_a_info = {
+ .name = TYPE_MUSCA_A_MACHINE,
+ .parent = TYPE_MUSCA_MACHINE,
+ .class_init = musca_a_class_init,
+};
+
+static const TypeInfo musca_b1_info = {
+ .name = TYPE_MUSCA_B1_MACHINE,
+ .parent = TYPE_MUSCA_MACHINE,
+ .class_init = musca_b1_class_init,
+};
+
+static void musca_machine_init(void)
+{
+ type_register_static(&musca_info);
+ type_register_static(&musca_a_info);
+ type_register_static(&musca_b1_info);
+}
+
+type_init(musca_machine_init);
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