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 "qemu/datadir.h" 30 #include "cpu.h" 31 #include "hw/boards.h" 32 #include "exec/address-spaces.h" 33 #include "qemu/error-report.h" 34 #include "hw/arm/digic.h" 35 #include "hw/block/flash.h" 36 #include "hw/loader.h" 37 #include "sysemu/sysemu.h" 38 #include "sysemu/qtest.h" 39 #include "qemu/units.h" 40 #include "qemu/cutils.h" 41 42 #define DIGIC4_ROM0_BASE 0xf0000000 43 #define DIGIC4_ROM1_BASE 0xf8000000 44 #define DIGIC4_ROM_MAX_SIZE 0x08000000 45 46 typedef struct DigicBoard { 47 void (*add_rom0)(DigicState *, hwaddr, const char *); 48 const char *rom0_def_filename; 49 void (*add_rom1)(DigicState *, hwaddr, const char *); 50 const char *rom1_def_filename; 51 } DigicBoard; 52 53 static void digic4_board_init(MachineState *machine, DigicBoard *board) 54 { 55 Error *err = NULL; 56 DigicState *s = DIGIC(object_new(TYPE_DIGIC)); 57 MachineClass *mc = MACHINE_GET_CLASS(machine); 58 59 if (machine->ram_size != mc->default_ram_size) { 60 char *sz = size_to_str(mc->default_ram_size); 61 error_report("Invalid RAM size, should be %s", sz); 62 g_free(sz); 63 exit(EXIT_FAILURE); 64 } 65 66 if (!qdev_realize(DEVICE(s), NULL, &err)) { 67 error_reportf_err(err, "Couldn't realize DIGIC SoC: "); 68 exit(1); 69 } 70 71 memory_region_add_subregion(get_system_memory(), 0, machine->ram); 72 73 if (board->add_rom0) { 74 board->add_rom0(s, DIGIC4_ROM0_BASE, 75 machine->firmware ?: board->rom0_def_filename); 76 } 77 78 if (board->add_rom1) { 79 board->add_rom1(s, DIGIC4_ROM1_BASE, 80 machine->firmware ?: board->rom1_def_filename); 81 } 82 } 83 84 static void digic_load_rom(DigicState *s, hwaddr addr, 85 hwaddr max_size, const char *filename) 86 { 87 target_long rom_size; 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 (filename) { 97 char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); 98 99 if (!fn) { 100 error_report("Couldn't find rom image '%s'.", filename); 101 exit(1); 102 } 103 104 rom_size = load_image_targphys(fn, addr, max_size); 105 if (rom_size < 0 || rom_size > max_size) { 106 error_report("Couldn't load rom image '%s'.", filename); 107 exit(1); 108 } 109 g_free(fn); 110 } 111 } 112 113 /* 114 * Samsung K8P3215UQB 115 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory 116 */ 117 static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr, 118 const char *filename) 119 { 120 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024) 121 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024) 122 123 pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE, 124 NULL, FLASH_K8P3215UQB_SECTOR_SIZE, 125 DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE, 126 4, 127 0x00EC, 0x007E, 0x0003, 0x0001, 128 0x0555, 0x2aa, 0); 129 130 digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, filename); 131 } 132 133 static DigicBoard digic4_board_canon_a1100 = { 134 .add_rom1 = digic4_add_k8p3215uqb_rom, 135 .rom1_def_filename = "canon-a1100-rom1.bin", 136 }; 137 138 static void canon_a1100_init(MachineState *machine) 139 { 140 digic4_board_init(machine, &digic4_board_canon_a1100); 141 } 142 143 static void canon_a1100_machine_init(MachineClass *mc) 144 { 145 mc->desc = "Canon PowerShot A1100 IS"; 146 mc->init = &canon_a1100_init; 147 mc->ignore_memory_transaction_failures = true; 148 mc->default_ram_size = 64 * MiB; 149 mc->default_ram_id = "ram"; 150 } 151 152 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init) 153