hw/arm/digic_boards.c

   1 /*
   2  * QEMU model of the Canon DIGIC boards (cameras indeed :).
   3  *
   4  * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
   5  *
   6  * This model is based on reverse engineering efforts
   7  * made by CHDK (http://chdk.wikia.com) and
   8  * Magic Lantern (http://www.magiclantern.fm) projects
   9  * contributors.
  10  *
  11  * See docs here:
  12  *   http://magiclantern.wikia.com/wiki/Register_Map
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  22  * GNU General Public License for more details.
  23  *
  24  */
  25
  26 #include "hw/boards.h"
  27 #include "exec/address-spaces.h"
  28 #include "qemu/error-report.h"
  29 #include "hw/arm/digic.h"
  30 #include "hw/block/flash.h"
  31 #include "hw/loader.h"
  32 #include "sysemu/sysemu.h"
  33 #include "sysemu/qtest.h"
  34
  35 #define DIGIC4_ROM0_BASE      0xf0000000
  36 #define DIGIC4_ROM1_BASE      0xf8000000
  37 #define DIGIC4_ROM_MAX_SIZE   0x08000000
  38
  39 typedef struct DigicBoardState {
  40     DigicState *digic;
  41     MemoryRegion ram;
  42 } DigicBoardState;
  43
  44 typedef struct DigicBoard {
  45     hwaddr ram_size;
  46     void (*add_rom0)(DigicBoardState *, hwaddr, const char *);
  47     const char *rom0_def_filename;
  48     void (*add_rom1)(DigicBoardState *, hwaddr, const char *);
  49     const char *rom1_def_filename;
  50 } DigicBoard;
  51
  52 static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size)
  53 {
  54     memory_region_init_ram(&s->ram, NULL, "ram", ram_size);
  55     memory_region_add_subregion(get_system_memory(), 0, &s->ram);
  56     vmstate_register_ram_global(&s->ram);
  57 }
  58
  59 static void digic4_board_init(DigicBoard *board)
  60 {
  61     Error *err = NULL;
  62
  63     DigicBoardState *s = g_new(DigicBoardState, 1);
  64
  65     s->digic = DIGIC(object_new(TYPE_DIGIC));
  66     object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
  67     if (err != NULL) {
  68         error_report("Couldn't realize DIGIC SoC: %s\n",
  69                      error_get_pretty(err));
  70         exit(1);
  71     }
  72
  73     digic4_board_setup_ram(s, board->ram_size);
  74
  75     if (board->add_rom0) {
  76         board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename);
  77     }
  78
  79     if (board->add_rom1) {
  80         board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename);
  81     }
  82 }
  83
  84 static void digic_load_rom(DigicBoardState *s, hwaddr addr,
  85                            hwaddr max_size, const char *def_filename)
  86 {
  87     target_long rom_size;
  88     const char *filename;
  89
  90     if (qtest_enabled()) {
  91         /* qtest runs no code so don't attempt a ROM load which
  92          * could fail and result in a spurious test failure.
  93          */
  94         return;
  95     }
  96
  97     if (bios_name) {
  98         filename = bios_name;
  99     } else {
 100         filename = def_filename;
 101     }
 102
 103     if (filename) {
 104         char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
 105
 106         if (!fn) {
 107             error_report("Couldn't find rom image '%s'.\n", filename);
 108             exit(1);
 109         }
 110
 111         rom_size = load_image_targphys(fn, addr, max_size);
 112         if (rom_size < 0 || rom_size > max_size) {
 113             error_report("Couldn't load rom image '%s'.\n", filename);
 114             exit(1);
 115         }
 116     }
 117 }
 118
 119 /*
 120  * Samsung K8P3215UQB
 121  * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
 122  */
 123 static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr,
 124                                       const char *def_filename)
 125 {
 126 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
 127 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
 128
 129     pflash_cfi02_register(addr, NULL, "pflash", FLASH_K8P3215UQB_SIZE,
 130                           NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
 131                           FLASH_K8P3215UQB_SIZE / FLASH_K8P3215UQB_SECTOR_SIZE,
 132                           DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
 133                           4,
 134                           0x00EC, 0x007E, 0x0003, 0x0001,
 135                           0x0555, 0x2aa, 0);
 136
 137     digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename);
 138 }
 139
 140 static DigicBoard digic4_board_canon_a1100 = {
 141     .ram_size = 64 * 1024 * 1024,
 142     .add_rom1 = digic4_add_k8p3215uqb_rom,
 143     .rom1_def_filename = "canon-a1100-rom1.bin",
 144 };
 145
 146 static void canon_a1100_init(MachineState *machine)
 147 {
 148     digic4_board_init(&digic4_board_canon_a1100);
 149 }
 150
 151 static QEMUMachine canon_a1100 = {
 152     .name = "canon-a1100",
 153     .desc = "Canon PowerShot A1100 IS",
 154     .init = &canon_a1100_init,
 155 };
 156
 157 static void digic_register_machines(void)
 158 {
 159     qemu_register_machine(&canon_a1100);
 160 }
 161
 162 machine_init(digic_register_machines)