LXR qemu/hw/an5206.c

   1/*
   2 * Arnewsh 5206 ColdFire system emulation.
   3 *
   4 * Copyright (c) 2007 CodeSourcery.
   5 *
   6 * This code is licensed under the GPL
   7 */
   8
   9#include "hw.h"
  10#include "mcf.h"
  11#include "boards.h"
  12#include "loader.h"
  13#include "elf.h"
  14#include "exec-memory.h"
  15
  16#define KERNEL_LOAD_ADDR 0x10000
  17#define AN5206_MBAR_ADDR 0x10000000
  18#define AN5206_RAMBAR_ADDR 0x20000000
  19
  20/* Board init.  */
  21
  22static void an5206_init(QEMUMachineInitArgs *args)
  23{
  24    ram_addr_t ram_size = args->ram_size;
  25    const char *cpu_model = args->cpu_model;
  26    const char *kernel_filename = args->kernel_filename;
  27    CPUM68KState *env;
  28    int kernel_size;
  29    uint64_t elf_entry;
  30    hwaddr entry;
  31    MemoryRegion *address_space_mem = get_system_memory();
  32    MemoryRegion *ram = g_new(MemoryRegion, 1);
  33    MemoryRegion *sram = g_new(MemoryRegion, 1);
  34
  35    if (!cpu_model)
  36        cpu_model = "m5206";
  37    env = cpu_init(cpu_model);
  38    if (!env) {
  39        hw_error("Unable to find m68k CPU definition\n");
  40    }
  41
  42    /* Initialize CPU registers.  */
  43    env->vbr = 0;
  44    /* TODO: allow changing MBAR and RAMBAR.  */
  45    env->mbar = AN5206_MBAR_ADDR | 1;
  46    env->rambar0 = AN5206_RAMBAR_ADDR | 1;
  47
  48    /* DRAM at address zero */
  49    memory_region_init_ram(ram, "an5206.ram", ram_size);
  50    vmstate_register_ram_global(ram);
  51    memory_region_add_subregion(address_space_mem, 0, ram);
  52
  53    /* Internal SRAM.  */
  54    memory_region_init_ram(sram, "an5206.sram", 512);
  55    vmstate_register_ram_global(sram);
  56    memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
  57
  58    mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, env);
  59
  60    /* Load kernel.  */
  61    if (!kernel_filename) {
  62        fprintf(stderr, "Kernel image must be specified\n");
  63        exit(1);
  64    }
  65
  66    kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
  67                           NULL, NULL, 1, ELF_MACHINE, 0);
  68    entry = elf_entry;
  69    if (kernel_size < 0) {
  70        kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
  71    }
  72    if (kernel_size < 0) {
  73        kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
  74                                          ram_size - KERNEL_LOAD_ADDR);
  75        entry = KERNEL_LOAD_ADDR;
  76    }
  77    if (kernel_size < 0) {
  78        fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
  79        exit(1);
  80    }
  81
  82    env->pc = entry;
  83}
  84
  85static QEMUMachine an5206_machine = {
  86    .name = "an5206",
  87    .desc = "Arnewsh 5206",
  88    .init = an5206_init,
  89};
  90
  91static void an5206_machine_init(void)
  92{
  93    qemu_register_machine(&an5206_machine);
  94}
  95
  96machine_init(an5206_machine_init);
  97