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 "hw/boards.h" 27 #include "exec/address-spaces.h" 28 #include "qemu/error-report.h" 29 #include "hw/arm/digic.h" 30 #include "hw/block/flash.h" 31 #include "hw/loader.h" 32 #include "sysemu/sysemu.h" 33 #include "sysemu/qtest.h" 34 35 #define DIGIC4_ROM0_BASE 0xf0000000 36 #define DIGIC4_ROM1_BASE 0xf8000000 37 #define DIGIC4_ROM_MAX_SIZE 0x08000000 38 39 typedef struct DigicBoardState { 40 DigicState *digic; 41 MemoryRegion ram; 42 } DigicBoardState; 43 44 typedef struct DigicBoard { 45 hwaddr ram_size; 46 void (*add_rom0)(DigicBoardState *, hwaddr, const char *); 47 const char *rom0_def_filename; 48 void (*add_rom1)(DigicBoardState *, hwaddr, const char *); 49 const char *rom1_def_filename; 50 } DigicBoard; 51 52 static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size) 53 { 54 memory_region_init_ram(&s->ram, NULL, "ram", ram_size); 55 memory_region_add_subregion(get_system_memory(), 0, &s->ram); 56 vmstate_register_ram_global(&s->ram); 57 } 58 59 static void digic4_board_init(DigicBoard *board) 60 { 61 Error *err = NULL; 62 63 DigicBoardState *s = g_new(DigicBoardState, 1); 64 65 s->digic = DIGIC(object_new(TYPE_DIGIC)); 66 object_property_set_bool(OBJECT(s->digic), true, "realized", &err); 67 if (err != NULL) { 68 error_report("Couldn't realize DIGIC SoC: %s\n", 69 error_get_pretty(err)); 70 exit(1); 71 } 72 73 digic4_board_setup_ram(s, board->ram_size); 74 75 if (board->add_rom0) { 76 board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename); 77 } 78 79 if (board->add_rom1) { 80 board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename); 81 } 82 } 83 84 static void digic_load_rom(DigicBoardState *s, hwaddr addr, 85 hwaddr max_size, const char *def_filename) 86 { 87 target_long rom_size; 88 const char *filename; 89 90 if (qtest_enabled()) { 91 /* qtest runs no code so don't attempt a ROM load which 92 * could fail and result in a spurious test failure. 93 */ 94 return; 95 } 96 97 if (bios_name) { 98 filename = bios_name; 99 } else { 100 filename = def_filename; 101 } 102 103 if (filename) { 104 char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); 105 106 if (!fn) { 107 error_report("Couldn't find rom image '%s'.\n", filename); 108 exit(1); 109 } 110 111 rom_size = load_image_targphys(fn, addr, max_size); 112 if (rom_size < 0 || rom_size > max_size) { 113 error_report("Couldn't load rom image '%s'.\n", filename); 114 exit(1); 115 } 116 } 117 } 118 119 /* 120 * Samsung K8P3215UQB 121 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory 122 */ 123 static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr, 124 const char *def_filename) 125 { 126 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024) 127 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024) 128 129 pflash_cfi02_register(addr, NULL, "pflash", FLASH_K8P3215UQB_SIZE, 130 NULL, FLASH_K8P3215UQB_SECTOR_SIZE, 131 FLASH_K8P3215UQB_SIZE / FLASH_K8P3215UQB_SECTOR_SIZE, 132 DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE, 133 4, 134 0x00EC, 0x007E, 0x0003, 0x0001, 135 0x0555, 0x2aa, 0); 136 137 digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename); 138 } 139 140 static DigicBoard digic4_board_canon_a1100 = { 141 .ram_size = 64 * 1024 * 1024, 142 .add_rom1 = digic4_add_k8p3215uqb_rom, 143 .rom1_def_filename = "canon-a1100-rom1.bin", 144 }; 145 146 static void canon_a1100_init(MachineState *machine) 147 { 148 digic4_board_init(&digic4_board_canon_a1100); 149 } 150 151 static QEMUMachine canon_a1100 = { 152 .name = "canon-a1100", 153 .desc = "Canon PowerShot A1100 IS", 154 .init = &canon_a1100_init, 155 }; 156 157 static void digic_register_machines(void) 158 { 159 qemu_register_machine(&canon_a1100); 160 } 161 162 machine_init(digic_register_machines) 163