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/datadir.h"
  29 #include "hw/boards.h"
  30 #include "qemu/error-report.h"
  31 #include "hw/arm/digic.h"
  32 #include "hw/block/flash.h"
  33 #include "hw/loader.h"
  34 #include "sysemu/qtest.h"
  35 #include "qemu/units.h"
  36 #include "qemu/cutils.h"
  37
  38 #define DIGIC4_ROM0_BASE      0xf0000000
  39 #define DIGIC4_ROM1_BASE      0xf8000000
  40 #define DIGIC4_ROM_MAX_SIZE   0x08000000
  41
  42 typedef struct DigicBoard {
  43     void (*add_rom0)(DigicState *, hwaddr, const char *);
  44     const char *rom0_def_filename;
  45     void (*add_rom1)(DigicState *, hwaddr, const char *);
  46     const char *rom1_def_filename;
  47 } DigicBoard;
  48
  49 static void digic4_board_init(MachineState *machine, DigicBoard *board)
  50 {
  51     Error *err = NULL;
  52     DigicState *s = DIGIC(object_new(TYPE_DIGIC));
  53     MachineClass *mc = MACHINE_GET_CLASS(machine);
  54
  55     if (machine->ram_size != mc->default_ram_size) {
  56         char *sz = size_to_str(mc->default_ram_size);
  57         error_report("Invalid RAM size, should be %s", sz);
  58         g_free(sz);
  59         exit(EXIT_FAILURE);
  60     }
  61
  62     if (!qdev_realize(DEVICE(s), NULL, &err)) {
  63         error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
  64         exit(1);
  65     }
  66
  67     memory_region_add_subregion(get_system_memory(), 0, machine->ram);
  68
  69     if (board->add_rom0) {
  70         board->add_rom0(s, DIGIC4_ROM0_BASE,
  71                         machine->firmware ?: board->rom0_def_filename);
  72     }
  73
  74     if (board->add_rom1) {
  75         board->add_rom1(s, DIGIC4_ROM1_BASE,
  76                         machine->firmware ?: board->rom1_def_filename);
  77     }
  78 }
  79
  80 static void digic_load_rom(DigicState *s, hwaddr addr,
  81                            hwaddr max_size, const char *filename)
  82 {
  83     target_long rom_size;
  84
  85     if (qtest_enabled()) {
  86         /* qtest runs no code so don't attempt a ROM load which
  87          * could fail and result in a spurious test failure.
  88          */
  89         return;
  90     }
  91
  92     if (filename) {
  93         char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
  94
  95         if (!fn) {
  96             error_report("Couldn't find rom image '%s'.", filename);
  97             exit(1);
  98         }
  99
 100         rom_size = load_image_targphys(fn, addr, max_size);
 101         if (rom_size < 0 || rom_size > max_size) {
 102             error_report("Couldn't load rom image '%s'.", filename);
 103             exit(1);
 104         }
 105         g_free(fn);
 106     }
 107 }
 108
 109 /*
 110  * Samsung K8P3215UQB
 111  * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
 112  */
 113 static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr,
 114                                       const char *filename)
 115 {
 116 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
 117 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
 118
 119     pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE,
 120                           NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
 121                           DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
 122                           4,
 123                           0x00EC, 0x007E, 0x0003, 0x0001,
 124                           0x0555, 0x2aa, 0);
 125
 126     digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, filename);
 127 }
 128
 129 static DigicBoard digic4_board_canon_a1100 = {
 130     .add_rom1 = digic4_add_k8p3215uqb_rom,
 131     .rom1_def_filename = "canon-a1100-rom1.bin",
 132 };
 133
 134 static void canon_a1100_init(MachineState *machine)
 135 {
 136     digic4_board_init(machine, &digic4_board_canon_a1100);
 137 }
 138
 139 static void canon_a1100_machine_init(MachineClass *mc)
 140 {
 141     mc->desc = "Canon PowerShot A1100 IS (ARM946)";
 142     mc->init = &canon_a1100_init;
 143     mc->ignore_memory_transaction_failures = true;
 144     mc->default_ram_size = 64 * MiB;
 145     mc->default_ram_id = "ram";
 146 }
 147
 148 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)