root / hw / dummy_m68k.c @ aebcf56f
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/*
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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 "hw.h" |
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#include "boards.h" |
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#include "loader.h" |
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#include "elf.h" |
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#include "exec-memory.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(ram_addr_t ram_size, |
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const char *boot_device, |
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const char *kernel_filename, const char *kernel_cmdline, |
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const char *initrd_filename, const char *cpu_model) |
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{ |
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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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target_phys_addr_t entry; |
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if (!cpu_model)
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cpu_model = "cfv4e";
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env = cpu_init(cpu_model); |
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if (!env) {
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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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/* Initialize CPU registers. */
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env->vbr = 0;
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/* RAM at address zero */
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memory_region_init_ram(ram, "dummy_m68k.ram", ram_size);
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vmstate_register_ram_global(ram); |
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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, ELF_MACHINE, 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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} |
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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 QEMUMachine dummy_m68k_machine = {
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.name = "dummy",
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.desc = "Dummy board",
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.init = dummy_m68k_init, |
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}; |
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static void dummy_m68k_machine_init(void) |
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{ |
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qemu_register_machine(&dummy_m68k_machine); |
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} |
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machine_init(dummy_m68k_machine_init); |