aboutsummaryrefslogtreecommitdiff
path: root/hw/core
diff options
context:
space:
mode:
Diffstat (limited to 'hw/core')
-rw-r--r--hw/core/Makefile.objs3
-rw-r--r--hw/core/generic-loader.c211
-rw-r--r--hw/core/or-irq.c107
3 files changed, 321 insertions, 0 deletions
diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
index cfd4840397..a4c94e522d 100644
--- a/hw/core/Makefile.objs
+++ b/hw/core/Makefile.objs
@@ -16,4 +16,7 @@ common-obj-$(CONFIG_SOFTMMU) += null-machine.o
common-obj-$(CONFIG_SOFTMMU) += loader.o
common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
common-obj-$(CONFIG_SOFTMMU) += register.o
+common-obj-$(CONFIG_SOFTMMU) += or-irq.o
common-obj-$(CONFIG_PLATFORM_BUS) += platform-bus.o
+
+obj-$(CONFIG_SOFTMMU) += generic-loader.o
diff --git a/hw/core/generic-loader.c b/hw/core/generic-loader.c
new file mode 100644
index 0000000000..79ab6df357
--- /dev/null
+++ b/hw/core/generic-loader.c
@@ -0,0 +1,211 @@
+/*
+ * Generic Loader
+ *
+ * Copyright (C) 2014 Li Guang
+ * Copyright (C) 2016 Xilinx Inc.
+ * Written by Li Guang <lig.fnst@cn.fujitsu.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ */
+
+/*
+ * Internally inside QEMU this is a device. It is a strange device that
+ * provides no hardware interface but allows QEMU to monkey patch memory
+ * specified when it is created. To be able to do this it has a reset
+ * callback that does the memory operations.
+
+ * This device allows the user to monkey patch memory. To be able to do
+ * this it needs a backend to manage the datas, the same as other
+ * memory-related devices. In this case as the backend is so trivial we
+ * have merged it with the frontend instead of creating and maintaining a
+ * seperate backend.
+ */
+
+#include "qemu/osdep.h"
+#include "qom/cpu.h"
+#include "hw/sysbus.h"
+#include "sysemu/dma.h"
+#include "hw/loader.h"
+#include "qapi/error.h"
+#include "hw/core/generic-loader.h"
+
+#define CPU_NONE 0xFFFFFFFF
+
+static void generic_loader_reset(void *opaque)
+{
+ GenericLoaderState *s = GENERIC_LOADER(opaque);
+
+ if (s->set_pc) {
+ CPUClass *cc = CPU_GET_CLASS(s->cpu);
+ cpu_reset(s->cpu);
+ if (cc) {
+ cc->set_pc(s->cpu, s->addr);
+ }
+ }
+
+ if (s->data_len) {
+ assert(s->data_len < sizeof(s->data));
+ dma_memory_write(s->cpu->as, s->addr, &s->data, s->data_len);
+ }
+}
+
+static void generic_loader_realize(DeviceState *dev, Error **errp)
+{
+ GenericLoaderState *s = GENERIC_LOADER(dev);
+ hwaddr entry;
+ int big_endian;
+ int size = 0;
+
+ s->set_pc = false;
+
+ /* Perform some error checking on the user's options */
+ if (s->data || s->data_len || s->data_be) {
+ /* User is loading memory values */
+ if (s->file) {
+ error_setg(errp, "Specifying a file is not supported when loading "
+ "memory values");
+ return;
+ } else if (s->force_raw) {
+ error_setg(errp, "Specifying force-raw is not supported when "
+ "loading memory values");
+ return;
+ } else if (!s->data_len) {
+ /* We cant' check for !data here as a value of 0 is still valid. */
+ error_setg(errp, "Both data and data-len must be specified");
+ return;
+ } else if (s->data_len > 8) {
+ error_setg(errp, "data-len cannot be greater then 8 bytes");
+ return;
+ }
+ } else if (s->file || s->force_raw) {
+ /* User is loading an image */
+ if (s->data || s->data_len || s->data_be) {
+ error_setg(errp, "data can not be specified when loading an "
+ "image");
+ return;
+ }
+ s->set_pc = true;
+ } else if (s->addr) {
+ /* User is setting the PC */
+ if (s->data || s->data_len || s->data_be) {
+ error_setg(errp, "data can not be specified when setting a "
+ "program counter");
+ return;
+ } else if (!s->cpu_num) {
+ error_setg(errp, "cpu_num must be specified when setting a "
+ "program counter");
+ return;
+ }
+ s->set_pc = true;
+ } else {
+ /* Did the user specify anything? */
+ error_setg(errp, "please include valid arguments");
+ return;
+ }
+
+ qemu_register_reset(generic_loader_reset, dev);
+
+ if (s->cpu_num != CPU_NONE) {
+ s->cpu = qemu_get_cpu(s->cpu_num);
+ if (!s->cpu) {
+ error_setg(errp, "Specified boot CPU#%d is nonexistent",
+ s->cpu_num);
+ return;
+ }
+ } else {
+ s->cpu = first_cpu;
+ }
+
+#ifdef TARGET_WORDS_BIGENDIAN
+ big_endian = 1;
+#else
+ big_endian = 0;
+#endif
+
+ if (s->file) {
+ if (!s->force_raw) {
+ size = load_elf_as(s->file, NULL, NULL, &entry, NULL, NULL,
+ big_endian, 0, 0, 0, s->cpu->as);
+
+ if (size < 0) {
+ size = load_uimage_as(s->file, &entry, NULL, NULL, NULL, NULL,
+ s->cpu->as);
+ }
+ }
+
+ if (size < 0 || s->force_raw) {
+ /* Default to the maximum size being the machine's ram size */
+ size = load_image_targphys_as(s->file, s->addr, ram_size,
+ s->cpu->as);
+ } else {
+ s->addr = entry;
+ }
+
+ if (size < 0) {
+ error_setg(errp, "Cannot load specified image %s", s->file);
+ return;
+ }
+ }
+
+ /* Convert the data endiannes */
+ if (s->data_be) {
+ s->data = cpu_to_be64(s->data);
+ } else {
+ s->data = cpu_to_le64(s->data);
+ }
+}
+
+static void generic_loader_unrealize(DeviceState *dev, Error **errp)
+{
+ qemu_unregister_reset(generic_loader_reset, dev);
+}
+
+static Property generic_loader_props[] = {
+ DEFINE_PROP_UINT64("addr", GenericLoaderState, addr, 0),
+ DEFINE_PROP_UINT64("data", GenericLoaderState, data, 0),
+ DEFINE_PROP_UINT8("data-len", GenericLoaderState, data_len, 0),
+ DEFINE_PROP_BOOL("data-be", GenericLoaderState, data_be, false),
+ DEFINE_PROP_UINT32("cpu-num", GenericLoaderState, cpu_num, CPU_NONE),
+ DEFINE_PROP_BOOL("force-raw", GenericLoaderState, force_raw, false),
+ DEFINE_PROP_STRING("file", GenericLoaderState, file),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void generic_loader_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ /* The reset function is not registered here and is instead registered in
+ * the realize function to allow this device to be added via the device_add
+ * command in the QEMU monitor.
+ * TODO: Improve the device_add functionality to allow resets to be
+ * connected
+ */
+ dc->realize = generic_loader_realize;
+ dc->unrealize = generic_loader_unrealize;
+ dc->props = generic_loader_props;
+ dc->desc = "Generic Loader";
+}
+
+static TypeInfo generic_loader_info = {
+ .name = TYPE_GENERIC_LOADER,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(GenericLoaderState),
+ .class_init = generic_loader_class_init,
+};
+
+static void generic_loader_register_type(void)
+{
+ type_register_static(&generic_loader_info);
+}
+
+type_init(generic_loader_register_type)
diff --git a/hw/core/or-irq.c b/hw/core/or-irq.c
new file mode 100644
index 0000000000..1ac090d1a4
--- /dev/null
+++ b/hw/core/or-irq.c
@@ -0,0 +1,107 @@
+/*
+ * QEMU IRQ/GPIO common code.
+ *
+ * Copyright (c) 2016 Alistair Francis <alistair@alistair23.me>.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/or-irq.h"
+
+static void or_irq_handler(void *opaque, int n, int level)
+{
+ qemu_or_irq *s = OR_IRQ(opaque);
+ int or_level = 0;
+ int i;
+
+ s->levels[n] = level;
+
+ for (i = 0; i < s->num_lines; i++) {
+ or_level |= s->levels[i];
+ }
+
+ qemu_set_irq(s->out_irq, or_level);
+}
+
+static void or_irq_reset(DeviceState *dev)
+{
+ qemu_or_irq *s = OR_IRQ(dev);
+ int i;
+
+ for (i = 0; i < MAX_OR_LINES; i++) {
+ s->levels[i] = false;
+ }
+}
+
+static void or_irq_realize(DeviceState *dev, Error **errp)
+{
+ qemu_or_irq *s = OR_IRQ(dev);
+
+ assert(s->num_lines < MAX_OR_LINES);
+
+ qdev_init_gpio_in(dev, or_irq_handler, s->num_lines);
+}
+
+static void or_irq_init(Object *obj)
+{
+ qemu_or_irq *s = OR_IRQ(obj);
+
+ qdev_init_gpio_out(DEVICE(obj), &s->out_irq, 1);
+}
+
+static const VMStateDescription vmstate_or_irq = {
+ .name = TYPE_OR_IRQ,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_BOOL_ARRAY(levels, qemu_or_irq, MAX_OR_LINES),
+ VMSTATE_END_OF_LIST(),
+ }
+};
+
+static Property or_irq_properties[] = {
+ DEFINE_PROP_UINT16("num-lines", qemu_or_irq, num_lines, 1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void or_irq_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = or_irq_reset;
+ dc->props = or_irq_properties;
+ dc->realize = or_irq_realize;
+ dc->vmsd = &vmstate_or_irq;
+}
+
+static const TypeInfo or_irq_type_info = {
+ .name = TYPE_OR_IRQ,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(qemu_or_irq),
+ .instance_init = or_irq_init,
+ .class_init = or_irq_class_init,
+};
+
+static void or_irq_register_types(void)
+{
+ type_register_static(&or_irq_type_info);
+}
+
+type_init(or_irq_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-13 07:30:54 +0000