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 "qemu/datadir.h"
  30 #include "cpu.h"
  31 #include "hw/boards.h"
  32 #include "exec/address-spaces.h"
  33 #include "qemu/error-report.h"
  34 #include "hw/arm/digic.h"
  35 #include "hw/block/flash.h"
  36 #include "hw/loader.h"
  37 #include "sysemu/sysemu.h"
  38 #include "sysemu/qtest.h"
  39 #include "qemu/units.h"
  40 #include "qemu/cutils.h"
  41
  42 #define DIGIC4_ROM0_BASE      0xf0000000
  43 #define DIGIC4_ROM1_BASE      0xf8000000
  44 #define DIGIC4_ROM_MAX_SIZE   0x08000000
  45
  46 typedef struct DigicBoard {
  47     void (*add_rom0)(DigicState *, hwaddr, const char *);
  48     const char *rom0_def_filename;
  49     void (*add_rom1)(DigicState *, hwaddr, const char *);
  50     const char *rom1_def_filename;
  51 } DigicBoard;
  52
  53 static void digic4_board_init(MachineState *machine, DigicBoard *board)
  54 {
  55     Error *err = NULL;
  56     DigicState *s = DIGIC(object_new(TYPE_DIGIC));
  57     MachineClass *mc = MACHINE_GET_CLASS(machine);
  58
  59     if (machine->ram_size != mc->default_ram_size) {
  60         char *sz = size_to_str(mc->default_ram_size);
  61         error_report("Invalid RAM size, should be %s", sz);
  62         g_free(sz);
  63         exit(EXIT_FAILURE);
  64     }
  65
  66     if (!qdev_realize(DEVICE(s), NULL, &err)) {
  67         error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
  68         exit(1);
  69     }
  70
  71     memory_region_add_subregion(get_system_memory(), 0, machine->ram);
  72
  73     if (board->add_rom0) {
  74         board->add_rom0(s, DIGIC4_ROM0_BASE,
  75                         machine->firmware ?: board->rom0_def_filename);
  76     }
  77
  78     if (board->add_rom1) {
  79         board->add_rom1(s, DIGIC4_ROM1_BASE,
  80                         machine->firmware ?: board->rom1_def_filename);
  81     }
  82 }
  83
  84 static void digic_load_rom(DigicState *s, hwaddr addr,
  85                            hwaddr max_size, const char *filename)
  86 {
  87     target_long rom_size;
  88
  89     if (qtest_enabled()) {
  90         /* qtest runs no code so don't attempt a ROM load which
  91          * could fail and result in a spurious test failure.
  92          */
  93         return;
  94     }
  95
  96     if (filename) {
  97         char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
  98
  99         if (!fn) {
 100             error_report("Couldn't find rom image '%s'.", filename);
 101             exit(1);
 102         }
 103
 104         rom_size = load_image_targphys(fn, addr, max_size);
 105         if (rom_size < 0 || rom_size > max_size) {
 106             error_report("Couldn't load rom image '%s'.", filename);
 107             exit(1);
 108         }
 109         g_free(fn);
 110     }
 111 }
 112
 113 /*
 114  * Samsung K8P3215UQB
 115  * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
 116  */
 117 static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr,
 118                                       const char *filename)
 119 {
 120 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
 121 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
 122
 123     pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE,
 124                           NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
 125                           DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
 126                           4,
 127                           0x00EC, 0x007E, 0x0003, 0x0001,
 128                           0x0555, 0x2aa, 0);
 129
 130     digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, filename);
 131 }
 132
 133 static DigicBoard digic4_board_canon_a1100 = {
 134     .add_rom1 = digic4_add_k8p3215uqb_rom,
 135     .rom1_def_filename = "canon-a1100-rom1.bin",
 136 };
 137
 138 static void canon_a1100_init(MachineState *machine)
 139 {
 140     digic4_board_init(machine, &digic4_board_canon_a1100);
 141 }
 142
 143 static void canon_a1100_machine_init(MachineClass *mc)
 144 {
 145     mc->desc = "Canon PowerShot A1100 IS (ARM946)";
 146     mc->init = &canon_a1100_init;
 147     mc->ignore_memory_transaction_failures = true;
 148     mc->default_ram_size = 64 * MiB;
 149     mc->default_ram_id = "ram";
 150 }
 151
 152 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)