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 "hw/boards.h" 31 #include "qemu/error-report.h" 32 #include "hw/arm/digic.h" 33 #include "hw/block/flash.h" 34 #include "hw/loader.h" 35 #include "sysemu/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 target_long 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); 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("canon-a1100", canon_a1100_machine_init) 150