hw/shix.c

   1 /*
   2  * SHIX 2.0 board description
   3  *
   4  * Copyright (c) 2005 Samuel Tardieu
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 /*
  25    Shix 2.0 board by Alexis Polti, described at
  26    http://perso.enst.fr/~polti/realisations/shix20/
  27
  28    More information in target-sh4/README.sh4
  29 */
  30 #include "hw.h"
  31 #include "sh.h"
  32 #include "sysemu.h"
  33 #include "boards.h"
  34 #include "loader.h"
  35 #include "exec-memory.h"
  36
  37 #define BIOS_FILENAME "shix_bios.bin"
  38 #define BIOS_ADDRESS 0xA0000000
  39
  40 static void shix_init(QEMUMachineInitArgs *args)
  41 {
  42     const char *cpu_model = args->cpu_model;
  43     int ret;
  44     CPUSH4State *env;
  45     struct SH7750State *s;
  46     MemoryRegion *sysmem = get_system_memory();
  47     MemoryRegion *rom = g_new(MemoryRegion, 1);
  48     MemoryRegion *sdram = g_new(MemoryRegion, 2);
  49
  50     if (!cpu_model)
  51         cpu_model = "any";
  52
  53     printf("Initializing CPU\n");
  54     env = cpu_init(cpu_model);
  55
  56     /* Allocate memory space */
  57     printf("Allocating ROM\n");
  58     memory_region_init_ram(rom, "shix.rom", 0x4000);
  59     vmstate_register_ram_global(rom);
  60     memory_region_set_readonly(rom, true);
  61     memory_region_add_subregion(sysmem, 0x00000000, rom);
  62     printf("Allocating SDRAM 1\n");
  63     memory_region_init_ram(&sdram[0], "shix.sdram1", 0x01000000);
  64     vmstate_register_ram_global(&sdram[0]);
  65     memory_region_add_subregion(sysmem, 0x08000000, &sdram[0]);
  66     printf("Allocating SDRAM 2\n");
  67     memory_region_init_ram(&sdram[1], "shix.sdram2", 0x01000000);
  68     vmstate_register_ram_global(&sdram[1]);
  69     memory_region_add_subregion(sysmem, 0x0c000000, &sdram[1]);
  70
  71     /* Load BIOS in 0 (and access it through P2, 0xA0000000) */
  72     if (bios_name == NULL)
  73         bios_name = BIOS_FILENAME;
  74     printf("%s: load BIOS '%s'\n", __func__, bios_name);
  75     ret = load_image_targphys(bios_name, 0, 0x4000);
  76     if (ret < 0) {              /* Check bios size */
  77         fprintf(stderr, "ret=%d\n", ret);
  78         fprintf(stderr, "qemu: could not load SHIX bios '%s'\n",
  79                 bios_name);
  80         exit(1);
  81     }
  82
  83     /* Register peripherals */
  84     s = sh7750_init(env, sysmem);
  85     /* XXXXX Check success */
  86     tc58128_init(s, "shix_linux_nand.bin", NULL);
  87     fprintf(stderr, "initialization terminated\n");
  88 }
  89
  90 static QEMUMachine shix_machine = {
  91     .name = "shix",
  92     .desc = "shix card",
  93     .init = shix_init,
  94     .is_default = 1,
  95 };
  96
  97 static void shix_machine_init(void)
  98 {
  99     qemu_register_machine(&shix_machine);
 100 }
 101
 102 machine_init(shix_machine_init);