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 42 typedef 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 49 static 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 80 static 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 */ 113 static 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 } 128 129 static DigicBoard digic4_board_canon_a1100 = { 130 .add_rom1 = digic4_add_k8p3215uqb_rom, 131 .rom1_def_filename = "canon-a1100-rom1.bin", 132 }; 133 134 static void canon_a1100_init(MachineState *machine) 135 { 136 digic4_board_init(machine, &digic4_board_canon_a1100); 137 } 138 139 static 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 } 147 148 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init) 149