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