LXR qemu/hw/arm/digic

   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
  42typedef 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
  49static 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
  80static 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 */
 113static 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
 129static DigicBoard digic4_board_canon_a1100 = {
 130    .add_rom1 = digic4_add_k8p3215uqb_rom,
 131    .rom1_def_filename = "canon-a1100-rom1.bin",
 132};
 133
 134static void canon_a1100_init(MachineState *machine)
 135{
 136    digic4_board_init(machine, &digic4_board_canon_a1100);
 137}
 138
 139static 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
 148DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
 149