1 /*

     2  * Arnewsh 5206 ColdFire system emulation.

     3  *

     4  * Copyright (c) 2007 CodeSourcery.

     5  *

     6  * This code is licenced under the GPL

     7  */

     8 

     9 #include "hw.h"

    10 #include "mcf.h"

    11 #include "sysemu.h"

    12 #include "boards.h"

    13 

    14 #define KERNEL_LOAD_ADDR 0x10000

    15 #define AN5206_MBAR_ADDR 0x10000000

    16 #define AN5206_RAMBAR_ADDR 0x20000000

    17 

    18 /* Stub functions for hardware that doesn't exist.  */

    19 void pic_info(void)

    20 {

    21 }

    22 

    23 void irq_info(void)

    24 {

    25 }

    26 

    27 /* Board init.  */

    28 

    29 static void an5206_init(ram_addr_t ram_size, int vga_ram_size,

    30                      const char *boot_device, DisplayState *ds,

    31                      const char *kernel_filename, const char *kernel_cmdline,

    32                      const char *initrd_filename, const char *cpu_model)

    33 {

    34     CPUState *env;

    35     int kernel_size;

    36     uint64_t elf_entry;

    37     target_ulong entry;

    38 

    39     if (!cpu_model)

    40         cpu_model = "m5206";

    41     env = cpu_init(cpu_model);

    42     if (!env) {

    43         cpu_abort(env, "Unable to find m68k CPU definition\n");

    44     }

    45 

    46     /* Initialize CPU registers.  */

    47     env->vbr = 0;

    48     /* TODO: allow changing MBAR and RAMBAR.  */

    49     env->mbar = AN5206_MBAR_ADDR | 1;

    50     env->rambar0 = AN5206_RAMBAR_ADDR | 1;

    51 

    52     /* DRAM at address zero */

    53     cpu_register_physical_memory(0, ram_size,

    54         qemu_ram_alloc(ram_size) | IO_MEM_RAM);

    55 

    56     /* Internal SRAM.  */

    57     cpu_register_physical_memory(AN5206_RAMBAR_ADDR, 512,

    58         qemu_ram_alloc(512) | IO_MEM_RAM);

    59 

    60     mcf5206_init(AN5206_MBAR_ADDR, env);

    61 

    62     /* Load kernel.  */

    63     if (!kernel_filename) {

    64         fprintf(stderr, "Kernel image must be specified\n");

    65         exit(1);

    66     }

    67 

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

    69     entry = elf_entry;

    70     if (kernel_size < 0) {

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

    72     }

    73     if (kernel_size < 0) {

    74         kernel_size = load_image(kernel_filename,

    75                                  phys_ram_base + KERNEL_LOAD_ADDR);

    76         entry = KERNEL_LOAD_ADDR;

    77     }

    78     if (kernel_size < 0) {

    79         fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);

    80         exit(1);

    81     }

    82 

    83     env->pc = entry;

    84 }

    85 

    86 QEMUMachine an5206_machine = {

    87     .name = "an5206",

    88     .desc = "Arnewsh 5206",

    89     .init = an5206_init,

    90     .ram_require = 512,

    91 };