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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/hw/xtensa/sim.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/hw/xtensa/sim.c')
-rw-r--r--qemu/hw/xtensa/sim.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/qemu/hw/xtensa/sim.c b/qemu/hw/xtensa/sim.c
new file mode 100644
index 000000000..328d20975
--- /dev/null
+++ b/qemu/hw/xtensa/sim.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Open Source and Linux Lab nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "sysemu/sysemu.h"
+#include "hw/boards.h"
+#include "hw/loader.h"
+#include "elf.h"
+#include "exec/memory.h"
+#include "exec/address-spaces.h"
+#include "qemu/error-report.h"
+
+static uint64_t translate_phys_addr(void *opaque, uint64_t addr)
+{
+ XtensaCPU *cpu = opaque;
+
+ return cpu_get_phys_page_debug(CPU(cpu), addr);
+}
+
+static void sim_reset(void *opaque)
+{
+ XtensaCPU *cpu = opaque;
+
+ cpu_reset(CPU(cpu));
+}
+
+static void xtensa_sim_init(MachineState *machine)
+{
+ XtensaCPU *cpu = NULL;
+ CPUXtensaState *env = NULL;
+ MemoryRegion *ram, *rom;
+ ram_addr_t ram_size = machine->ram_size;
+ const char *cpu_model = machine->cpu_model;
+ const char *kernel_filename = machine->kernel_filename;
+ int n;
+
+ if (!cpu_model) {
+ cpu_model = XTENSA_DEFAULT_CPU_MODEL;
+ }
+
+ for (n = 0; n < smp_cpus; n++) {
+ cpu = cpu_xtensa_init(cpu_model);
+ if (cpu == NULL) {
+ error_report("unable to find CPU definition '%s'",
+ cpu_model);
+ exit(EXIT_FAILURE);
+ }
+ env = &cpu->env;
+
+ env->sregs[PRID] = n;
+ qemu_register_reset(sim_reset, cpu);
+ /* Need MMU initialized prior to ELF loading,
+ * so that ELF gets loaded into virtual addresses
+ */
+ sim_reset(cpu);
+ }
+
+ ram = g_malloc(sizeof(*ram));
+ memory_region_init_ram(ram, NULL, "xtensa.sram", ram_size, &error_abort);
+ vmstate_register_ram_global(ram);
+ memory_region_add_subregion(get_system_memory(), 0, ram);
+
+ rom = g_malloc(sizeof(*rom));
+ memory_region_init_ram(rom, NULL, "xtensa.rom", 0x1000, &error_abort);
+ vmstate_register_ram_global(rom);
+ memory_region_add_subregion(get_system_memory(), 0xfe000000, rom);
+
+ if (kernel_filename) {
+ uint64_t elf_entry;
+ uint64_t elf_lowaddr;
+#ifdef TARGET_WORDS_BIGENDIAN
+ int success = load_elf(kernel_filename, translate_phys_addr, cpu,
+ &elf_entry, &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
+#else
+ int success = load_elf(kernel_filename, translate_phys_addr, cpu,
+ &elf_entry, &elf_lowaddr, NULL, 0, ELF_MACHINE, 0);
+#endif
+ if (success > 0) {
+ env->pc = elf_entry;
+ }
+ }
+}
+
+static QEMUMachine xtensa_sim_machine = {
+ .name = "sim",
+ .desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")",
+ .is_default = true,
+ .init = xtensa_sim_init,
+ .max_cpus = 4,
+};
+
+static void xtensa_sim_machine_init(void)
+{
+ qemu_register_machine(&xtensa_sim_machine);
+}
+
+machine_init(xtensa_sim_machine_init);