Add a simple moxie target, similar to what we have in the gdb simulator today.
Signed-off-by: Anthony Green <gr...@moxielogic.com>
---
hw/moxie/Makefile.objs | 5 ++
hw/moxiesim.c | 200 +++++++++++++++++++++++++++++++++++++++++++++
include/sysemu/arch_init.h | 1 +
3 files changed, 206 insertions(+)
create mode 100644 hw/moxie/Makefile.objs
create mode 100644 hw/moxiesim.c
diff --git a/hw/moxie/Makefile.objs b/hw/moxie/Makefile.objs
new file mode 100644
index 0000000..2963363
--- /dev/null
+++ b/hw/moxie/Makefile.objs
@@ -0,0 +1,5 @@
+# moxie boards
+obj-y = moxiesim.o serial.o mc146818rtc.o vga.o
+obj-$(CONFIG_FDT) += device_tree.o
+
+obj-y := $(addprefix ../,$(obj-y))
diff --git a/hw/moxiesim.c b/hw/moxiesim.c
new file mode 100644
index 0000000..feae538
--- /dev/null
+++ b/hw/moxiesim.c
@@ -0,0 +1,200 @@
+/*
+ * QEMU/moxiesim emulation
+ *
+ * Emulates a very simple machine model similiar to the one use by the
+ * GDB moxie simulator.
+ *
+ * Copyright (c) 2008, 2009, 2010 Anthony Green
+ *
+ * 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 "sysbus.h"
+#include "hw.h"
+#include "pc.h"
+#include "isa.h"
+#include "net/net.h"
+#include "sysemu/sysemu.h"
+#include "boards.h"
+#include "loader.h"
+#include "serial.h"
+#include "exec/address-spaces.h"
+
+#define PHYS_MEM_BASE 0x80000000
+
+static struct _loaderparams {
+ int ram_size;
+ const char *kernel_filename;
+ const char *kernel_cmdline;
+ const char *initrd_filename;
+} loaderparams;
+
+static void load_kernel (CPUMoxieState *env)
+{
+ uint64_t entry, kernel_low, kernel_high;
+ long kernel_size;
+ long initrd_size;
+ ram_addr_t initrd_offset;
+
+ kernel_size = load_elf(loaderparams.kernel_filename, NULL, NULL,
+ &entry, &kernel_low, &kernel_high, 1,
ELF_MACHINE, 0);
+ if (kernel_size >= 0)
+ env->pc = (unsigned) entry;
+ else
+ {
+ fprintf(stderr, "qemu: could not load kernel '%s'\n",
+ loaderparams.kernel_filename);
+ exit(1);
+ }
+
+ /* load initrd */
+ initrd_size = 0;
+ initrd_offset = 0;
+ if (loaderparams.initrd_filename) {
+ initrd_size = get_image_size (loaderparams.initrd_filename);
+ if (initrd_size > 0) {
+ initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) &
TARGET_PAGE_MASK;
+ if (initrd_offset + initrd_size > loaderparams.ram_size) {
+ fprintf(stderr,
+ "qemu: memory too small for initial ram disk '%s'\n",
+ loaderparams.initrd_filename);
+ exit(1);
+ }
+ initrd_size = load_image_targphys(loaderparams.initrd_filename,
+ initrd_offset,
+ ram_size);
+ }
+ if (initrd_size == (target_ulong) -1) {
+ fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
+ loaderparams.initrd_filename);
+ exit(1);
+ }
+ }
+}
+
+static void main_cpu_reset(void *opaque)
+{
+ MoxieCPU *cpu = opaque;
+
+ cpu_reset(CPU(cpu));
+}
+
+static inline DeviceState *
+moxie_intc_create(hwaddr base, qemu_irq irq, int kind_of_intr)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "moxie,intc");
+ qdev_prop_set_uint32(dev, "kind-of-intr", kind_of_intr);
+ qdev_init_nofail(dev);
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
+ return dev;
+}
+
+static void moxiesim_init(QEMUMachineInitArgs *args)
+{
+ MoxieCPU *cpu = NULL;
+ ram_addr_t ram_size = args->ram_size;
+ const char *cpu_model = args->cpu_model;
+ const char *kernel_filename = args->kernel_filename;
+ const char *kernel_cmdline = args->kernel_cmdline;
+ const char *initrd_filename = args->initrd_filename;
+ CPUMoxieState *env;
+ MemoryRegion *address_space_mem = get_system_memory();
+ MemoryRegion *ram = g_new(MemoryRegion, 1);
+ MemoryRegion *rom = g_new(MemoryRegion, 1);
+ hwaddr ram_base = 0x200000;
+#if 0
+ qemu_irq irq[32], *cpu_irq;
+#endif
+
+ /* Init CPUs. */
+ if (cpu_model == NULL) {
+ cpu_model = "moxie1";
+ }
+ cpu = cpu_moxie_init(cpu_model);
+ env = &cpu->env;
+ if (!env) {
+ fprintf(stderr, "Unable to find CPU definition\n");
+ exit(1);
+ }
+ register_savevm(NULL, "cpu", 0, 3, cpu_save, cpu_load, env);
+
+ qemu_register_reset(main_cpu_reset, cpu);
+
+ /* Allocate RAM. */
+ memory_region_init_ram (ram, "moxiesim.ram", ram_size);
+ vmstate_register_ram_global(ram);
+ memory_region_add_subregion(address_space_mem, ram_base, ram);
+
+ memory_region_init_ram(rom, "moxie.rom", 128*0x1000);
+ vmstate_register_ram_global(rom);
+ memory_region_add_subregion(get_system_memory(), 0x1000, rom);
+
+ if (kernel_filename) {
+ loaderparams.ram_size = ram_size;
+ loaderparams.kernel_filename = kernel_filename;
+ loaderparams.kernel_cmdline = kernel_cmdline;
+ loaderparams.initrd_filename = initrd_filename;
+ load_kernel(env);
+ }
+
+ /* Initialize the interrupt controller device. */
+#if 0
+ cpu_irq = moxie_pic_init_cpu(env);
+ dev = moxie_intc_create(0x81800000, cpu_irq[0], 2);
+ for (i = 0; i < 32; i++) {
+ irq[i] = qdev_get_gpio_in(dev, i);
+ }
+#endif
+
+ /* A single 16450 sits at offset 0x3f8. */
+ if (serial_hds[0])
+ serial_mm_init(address_space_mem, 0x3f8, 0, env->irq[4],
8000000/16, serial_hds[0], DEVICE_LITTLE_ENDIAN);
+
+#if 0
+ rtc_mm_init(0x400, 0, 0, 0);
+#endif
+}
+#if 0
+void DMA_run(void)
+{
+}
+#endif
+void pic_info(Monitor *mon, const QDict *qdict)
+{
+}
+
+void irq_info(Monitor *mon, const QDict *qdict)
+{
+}
+
+QEMUMachine moxiesim_machine = {
+ .name = "moxiesim",
+ .desc = "Moxie simulator platform",
+ .init = moxiesim_init,
+ .is_default = 1,
+};
+
+static void moxie_machine_init(void)
+{
+ qemu_register_machine(&moxiesim_machine);
+}
+
+machine_init(moxie_machine_init);
diff --git a/include/sysemu/arch_init.h b/include/sysemu/arch_init.h
index 5fc780c..2af8dbd 100644
--- a/include/sysemu/arch_init.h
+++ b/include/sysemu/arch_init.h
@@ -20,6 +20,7 @@ enum {
QEMU_ARCH_XTENSA = 4096,
QEMU_ARCH_OPENRISC = 8192,
QEMU_ARCH_UNICORE32 = 0x4000,
+ QEMU_ARCH_MOXIE = 0x8000
};
extern const uint32_t arch_type;
--
1.8.1.2
