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 "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
  39typedef struct DigicBoardState {
  40    DigicState *digic;
  41    MemoryRegion ram;
  42} DigicBoardState;
  43
  44typedef 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
  52static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size)
  53{
  54    memory_region_allocate_system_memory(&s->ram, NULL, "ram", ram_size);
  55    memory_region_add_subregion(get_system_memory(), 0, &s->ram);
  56}
  57
  58static void digic4_board_init(DigicBoard *board)
  59{
  60    Error *err = NULL;
  61
  62    DigicBoardState *s = g_new(DigicBoardState, 1);
  63
  64    s->digic = DIGIC(object_new(TYPE_DIGIC));
  65    object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
  66    if (err != NULL) {
  67        error_report("Couldn't realize DIGIC SoC: %s",
  68                     error_get_pretty(err));
  69        exit(1);
  70    }
  71
  72    digic4_board_setup_ram(s, board->ram_size);
  73
  74    if (board->add_rom0) {
  75        board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename);
  76    }
  77
  78    if (board->add_rom1) {
  79        board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename);
  80    }
  81}
  82
  83static void digic_load_rom(DigicBoardState *s, hwaddr addr,
  84                           hwaddr max_size, const char *def_filename)
  85{
  86    target_long rom_size;
  87    const char *filename;
  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 (bios_name) {
  97        filename = bios_name;
  98    } else {
  99        filename = def_filename;
 100    }
 101
 102    if (filename) {
 103        char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
 104
 105        if (!fn) {
 106            error_report("Couldn't find rom image '%s'.", filename);
 107            exit(1);
 108        }
 109
 110        rom_size = load_image_targphys(fn, addr, max_size);
 111        if (rom_size < 0 || rom_size > max_size) {
 112            error_report("Couldn't load rom image '%s'.", filename);
 113            exit(1);
 114        }
 115        g_free(fn);
 116    }
 117}
 118
 119/*
 120 * Samsung K8P3215UQB
 121 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
 122 */
 123static 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
 140static 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
 146static void canon_a1100_init(MachineState *machine)
 147{
 148    digic4_board_init(&digic4_board_canon_a1100);
 149}
 150
 151static void canon_a1100_machine_init(MachineClass *mc)
 152{
 153    mc->desc = "Canon PowerShot A1100 IS";
 154    mc->init = &canon_a1100_init;
 155}
 156
 157DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
 158