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 #include "qemu/units.h" 39 #include "qemu/cutils.h" 40 41 #define DIGIC4_ROM0_BASE 0xf0000000 42 #define DIGIC4_ROM1_BASE 0xf8000000 43 #define DIGIC4_ROM_MAX_SIZE 0x08000000 44 45 typedef struct DigicBoard { 46 void (*add_rom0)(DigicState *, hwaddr, const char *); 47 const char *rom0_def_filename; 48 void (*add_rom1)(DigicState *, hwaddr, const char *); 49 const char *rom1_def_filename; 50 } DigicBoard; 51 52 static void digic4_board_init(MachineState *machine, DigicBoard *board) 53 { 54 Error *err = NULL; 55 DigicState *s = DIGIC(object_new(TYPE_DIGIC)); 56 MachineClass *mc = MACHINE_GET_CLASS(machine); 57 58 if (machine->ram_size != mc->default_ram_size) { 59 char *sz = size_to_str(mc->default_ram_size); 60 error_report("Invalid RAM size, should be %s", sz); 61 g_free(sz); 62 exit(EXIT_FAILURE); 63 } 64 65 if (!qdev_realize(DEVICE(s), NULL, &err)) { 66 error_reportf_err(err, "Couldn't realize DIGIC SoC: "); 67 exit(1); 68 } 69 70 memory_region_add_subregion(get_system_memory(), 0, machine->ram); 71 72 if (board->add_rom0) { 73 board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename); 74 } 75 76 if (board->add_rom1) { 77 board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename); 78 } 79 } 80 81 static void digic_load_rom(DigicState *s, hwaddr addr, 82 hwaddr max_size, const char *def_filename) 83 { 84 target_long rom_size; 85 const char *filename; 86 87 if (qtest_enabled()) { 88 /* qtest runs no code so don't attempt a ROM load which 89 * could fail and result in a spurious test failure. 90 */ 91 return; 92 } 93 94 if (bios_name) { 95 filename = bios_name; 96 } else { 97 filename = def_filename; 98 } 99 100 if (filename) { 101 char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); 102 103 if (!fn) { 104 error_report("Couldn't find rom image '%s'.", filename); 105 exit(1); 106 } 107 108 rom_size = load_image_targphys(fn, addr, max_size); 109 if (rom_size < 0 || rom_size > max_size) { 110 error_report("Couldn't load rom image '%s'.", filename); 111 exit(1); 112 } 113 g_free(fn); 114 } 115 } 116 117 /* 118 * Samsung K8P3215UQB 119 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory 120 */ 121 static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr, 122 const char *def_filename) 123 { 124 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024) 125 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024) 126 127 pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE, 128 NULL, FLASH_K8P3215UQB_SECTOR_SIZE, 129 DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE, 130 4, 131 0x00EC, 0x007E, 0x0003, 0x0001, 132 0x0555, 0x2aa, 0); 133 134 digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename); 135 } 136 137 static DigicBoard digic4_board_canon_a1100 = { 138 .add_rom1 = digic4_add_k8p3215uqb_rom, 139 .rom1_def_filename = "canon-a1100-rom1.bin", 140 }; 141 142 static void canon_a1100_init(MachineState *machine) 143 { 144 digic4_board_init(machine, &digic4_board_canon_a1100); 145 } 146 147 static void canon_a1100_machine_init(MachineClass *mc) 148 { 149 mc->desc = "Canon PowerShot A1100 IS"; 150 mc->init = &canon_a1100_init; 151 mc->ignore_memory_transaction_failures = true; 152 mc->default_ram_size = 64 * MiB; 153 mc->default_ram_id = "ram"; 154 } 155 156 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init) 157