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-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
  43typedef struct DigicBoardState {
  44    DigicState *digic;
  45    MemoryRegion ram;
  46} DigicBoardState;
  47
  48typedef 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
  56static 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
  62static 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
  86static 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 */
 126static 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, NULL, "pflash", FLASH_K8P3215UQB_SIZE,
 133                          NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
 134                          FLASH_K8P3215UQB_SIZE / FLASH_K8P3215UQB_SECTOR_SIZE,
 135                          DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
 136                          4,
 137                          0x00EC, 0x007E, 0x0003, 0x0001,
 138                          0x0555, 0x2aa, 0);
 139
 140    digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename);
 141}
 142
 143static DigicBoard digic4_board_canon_a1100 = {
 144    .ram_size = 64 * 1024 * 1024,
 145    .add_rom1 = digic4_add_k8p3215uqb_rom,
 146    .rom1_def_filename = "canon-a1100-rom1.bin",
 147};
 148
 149static void canon_a1100_init(MachineState *machine)
 150{
 151    digic4_board_init(&digic4_board_canon_a1100);
 152}
 153
 154static void canon_a1100_machine_init(MachineClass *mc)
 155{
 156    mc->desc = "Canon PowerShot A1100 IS";
 157    mc->init = &canon_a1100_init;
 158}
 159
 160DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
 161