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85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* Dummy board with just RAM and CPU for use as an ISS.
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*
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* Copyright (c) 2007 CodeSourcery.
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*
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* This code is licensed under the GPL
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "cpu.h"
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#include "hw/hw.h"
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#include "hw/boards.h"
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#include "hw/loader.h"
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#include "elf.h"
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#include "exec/address-spaces.h"
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#define KERNEL_LOAD_ADDR 0x10000
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/* Board init. */
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static void dummy_m68k_init(MachineState *machine)
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{
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ram_addr_t ram_size = machine->ram_size;
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const char *cpu_model = machine->cpu_model;
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const char *kernel_filename = machine->kernel_filename;
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M68kCPU *cpu;
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CPUM68KState *env;
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MemoryRegion *address_space_mem = get_system_memory();
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MemoryRegion *ram = g_new(MemoryRegion, 1);
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int kernel_size;
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uint64_t elf_entry;
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hwaddr entry;
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if (!cpu_model)
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cpu_model = "cfv4e";
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cpu = cpu_m68k_init(cpu_model);
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if (!cpu) {
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fprintf(stderr, "Unable to find m68k CPU definition\n");
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exit(1);
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}
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env = &cpu->env;
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/* Initialize CPU registers. */
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env->vbr = 0;
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/* RAM at address zero */
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memory_region_allocate_system_memory(ram, NULL, "dummy_m68k.ram",
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ram_size);
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memory_region_add_subregion(address_space_mem, 0, ram);
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/* Load kernel. */
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if (kernel_filename) {
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kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
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NULL, NULL, 1, EM_68K, 0, 0);
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entry = elf_entry;
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if (kernel_size < 0) {
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kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
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NULL, NULL);
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}
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if (kernel_size < 0) {
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kernel_size = load_image_targphys(kernel_filename,
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KERNEL_LOAD_ADDR,
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ram_size - KERNEL_LOAD_ADDR);
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entry = KERNEL_LOAD_ADDR;
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}
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if (kernel_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n",
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kernel_filename);
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exit(1);
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}
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} else {
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entry = 0;
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}
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env->pc = entry;
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}
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static void dummy_m68k_machine_init(MachineClass *mc)
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{
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mc->desc = "Dummy board";
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mc->init = dummy_m68k_init;
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}
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DEFINE_MACHINE("dummy", dummy_m68k_machine_init)
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