1 /*

     2  * Dummy board with just RAM and CPU for use as an ISS.

     3  *

     4  * Copyright (c) 2007 CodeSourcery.

     5  *

     6  * This code is licenced under the GPL

     7  */

     8 

     9 #include "hw.h"

    10 #include "sysemu.h"

    11 #include "boards.h"

    12 

    13 #define KERNEL_LOAD_ADDR 0x10000

    14 

    15 /* Board init.  */

    16 

    17 static void dummy_m68k_init(ram_addr_t ram_size, int vga_ram_size,

    18                      const char *boot_device, DisplayState *ds,

    19                      const char *kernel_filename, const char *kernel_cmdline,

    20                      const char *initrd_filename, const char *cpu_model)

    21 {

    22     CPUState *env;

    23     int kernel_size;

    24     uint64_t elf_entry;

    25     target_ulong entry;

    26 

    27     if (!cpu_model)

    28         cpu_model = "cfv4e";

    29     env = cpu_init(cpu_model);

    30     if (!env) {

    31         fprintf(stderr, "Unable to find m68k CPU definition\n");

    32         exit(1);

    33     }

    34 

    35     /* Initialize CPU registers.  */

    36     env->vbr = 0;

    37 

    38     /* RAM at address zero */

    39     cpu_register_physical_memory(0, ram_size,

    40         qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    41 

    42     /* Load kernel.  */

    43     if (kernel_filename) {

    44         kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);

    45         entry = elf_entry;

    46         if (kernel_size < 0) {

    47             kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);

    48         }

    49         if (kernel_size < 0) {

    50             kernel_size = load_image(kernel_filename,

    51                                      phys_ram_base + KERNEL_LOAD_ADDR);

    52             entry = KERNEL_LOAD_ADDR;

    53         }

    54         if (kernel_size < 0) {

    55             fprintf(stderr, "qemu: could not load kernel '%s'\n",

    56                     kernel_filename);

    57             exit(1);

    58         }

    59     } else {

    60         entry = 0;

    61     }

    62     env->pc = entry;

    63 }

    64 

    65 QEMUMachine dummy_m68k_machine = {

    66     .name = "dummy",

    67     .desc = "Dummy board",

    68     .init = dummy_m68k_init,

    69 };