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_allocate_system_memory(&s->ram, NULL, "ram", ram_size); 55 memory_region_add_subregion(get_system_memory(), 0, &s->ram); 56 } 57 58 static void digic4_board_init(DigicBoard *board) 59 { 60 Error *err = NULL; 61 62 DigicBoardState *s = g_new(DigicBoardState, 1); 63 64 s->digic = DIGIC(object_new(TYPE_DIGIC)); 65 object_property_set_bool(OBJECT(s->digic), true, "realized", &err); 66 if (err != NULL) { 67 error_reportf_err(err, "Couldn't realize DIGIC SoC: "); 68 exit(1); 69 } 70 71 digic4_board_setup_ram(s, board->ram_size); 72 73 if (board->add_rom0) { 74 board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename); 75 } 76 77 if (board->add_rom1) { 78 board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename); 79 } 80 } 81 82 static void digic_load_rom(DigicBoardState *s, hwaddr addr, 83 hwaddr max_size, const char *def_filename) 84 { 85 target_long rom_size; 86 const char *filename; 87 88 if (qtest_enabled()) { 89 /* qtest runs no code so don't attempt a ROM load which 90 * could fail and result in a spurious test failure. 91 */ 92 return; 93 } 94 95 if (bios_name) { 96 filename = bios_name; 97 } else { 98 filename = def_filename; 99 } 100 101 if (filename) { 102 char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); 103 104 if (!fn) { 105 error_report("Couldn't find rom image '%s'.", filename); 106 exit(1); 107 } 108 109 rom_size = load_image_targphys(fn, addr, max_size); 110 if (rom_size < 0 || rom_size > max_size) { 111 error_report("Couldn't load rom image '%s'.", filename); 112 exit(1); 113 } 114 g_free(fn); 115 } 116 } 117 118 /* 119 * Samsung K8P3215UQB 120 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory 121 */ 122 static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr, 123 const char *def_filename) 124 { 125 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024) 126 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024) 127 128 pflash_cfi02_register(addr, NULL, "pflash", FLASH_K8P3215UQB_SIZE, 129 NULL, FLASH_K8P3215UQB_SECTOR_SIZE, 130 FLASH_K8P3215UQB_SIZE / FLASH_K8P3215UQB_SECTOR_SIZE, 131 DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE, 132 4, 133 0x00EC, 0x007E, 0x0003, 0x0001, 134 0x0555, 0x2aa, 0); 135 136 digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename); 137 } 138 139 static DigicBoard digic4_board_canon_a1100 = { 140 .ram_size = 64 * 1024 * 1024, 141 .add_rom1 = digic4_add_k8p3215uqb_rom, 142 .rom1_def_filename = "canon-a1100-rom1.bin", 143 }; 144 145 static void canon_a1100_init(MachineState *machine) 146 { 147 digic4_board_init(&digic4_board_canon_a1100); 148 } 149 150 static void canon_a1100_machine_init(MachineClass *mc) 151 { 152 mc->desc = "Canon PowerShot A1100 IS"; 153 mc->init = &canon_a1100_init; 154 } 155 156 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init) 157