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 "qemu/osdep.h"
  27 #include "qapi/error.h"
  28 #include "qemu-common.h"
  29 #include "cpu.h"
  30 #include "hw/boards.h"
  31 #include "exec/address-spaces.h"
  32 #include "qemu/error-report.h"
  33 #include "hw/arm/digic.h"
  34 #include "hw/block/flash.h"
  35 #include "hw/loader.h"
  36 #include "sysemu/sysemu.h"
  37 #include "sysemu/qtest.h"
  38
  39 #define DIGIC4_ROM0_BASE      0xf0000000
  40 #define DIGIC4_ROM1_BASE      0xf8000000
  41 #define DIGIC4_ROM_MAX_SIZE   0x08000000
  42
  43 typedef struct DigicBoardState {
  44     DigicState *digic;
  45     MemoryRegion ram;
  46 } DigicBoardState;
  47
  48 typedef struct DigicBoard {
  49     hwaddr ram_size;
  50     void (*add_rom0)(DigicBoardState *, hwaddr, const char *);
  51     const char *rom0_def_filename;
  52     void (*add_rom1)(DigicBoardState *, hwaddr, const char *);
  53     const char *rom1_def_filename;
  54 } DigicBoard;
  55
  56 static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size)
  57 {
  58     memory_region_allocate_system_memory(&s->ram, NULL, "ram", ram_size);
  59     memory_region_add_subregion(get_system_memory(), 0, &s->ram);
  60 }
  61
  62 static void digic4_board_init(DigicBoard *board)
  63 {
  64     Error *err = NULL;
  65
  66     DigicBoardState *s = g_new(DigicBoardState, 1);
  67
  68     s->digic = DIGIC(object_new(TYPE_DIGIC));
  69     object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
  70     if (err != NULL) {
  71         error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
  72         exit(1);
  73     }
  74
  75     digic4_board_setup_ram(s, board->ram_size);
  76
  77     if (board->add_rom0) {
  78         board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename);
  79     }
  80
  81     if (board->add_rom1) {
  82         board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename);
  83     }
  84 }
  85
  86 static void digic_load_rom(DigicBoardState *s, hwaddr addr,
  87                            hwaddr max_size, const char *def_filename)
  88 {
  89     target_long rom_size;
  90     const char *filename;
  91
  92     if (qtest_enabled()) {
  93         /* qtest runs no code so don't attempt a ROM load which
  94          * could fail and result in a spurious test failure.
  95          */
  96         return;
  97     }
  98
  99     if (bios_name) {
 100         filename = bios_name;
 101     } else {
 102         filename = def_filename;
 103     }
 104
 105     if (filename) {
 106         char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
 107
 108         if (!fn) {
 109             error_report("Couldn't find rom image '%s'.", filename);
 110             exit(1);
 111         }
 112
 113         rom_size = load_image_targphys(fn, addr, max_size);
 114         if (rom_size < 0 || rom_size > max_size) {
 115             error_report("Couldn't load rom image '%s'.", filename);
 116             exit(1);
 117         }
 118         g_free(fn);
 119     }
 120 }
 121
 122 /*
 123  * Samsung K8P3215UQB
 124  * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
 125  */
 126 static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr,
 127                                       const char *def_filename)
 128 {
 129 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
 130 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
 131
 132     pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE,
 133                           NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
 134                           DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
 135                           4,
 136                           0x00EC, 0x007E, 0x0003, 0x0001,
 137                           0x0555, 0x2aa, 0);
 138
 139     digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename);
 140 }
 141
 142 static DigicBoard digic4_board_canon_a1100 = {
 143     .ram_size = 64 * 1024 * 1024,
 144     .add_rom1 = digic4_add_k8p3215uqb_rom,
 145     .rom1_def_filename = "canon-a1100-rom1.bin",
 146 };
 147
 148 static void canon_a1100_init(MachineState *machine)
 149 {
 150     digic4_board_init(&digic4_board_canon_a1100);
 151 }
 152
 153 static void canon_a1100_machine_init(MachineClass *mc)
 154 {
 155     mc->desc = "Canon PowerShot A1100 IS";
 156     mc->init = &canon_a1100_init;
 157     mc->ignore_memory_transaction_failures = true;
 158 }
 159
 160 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)