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
39 #define DIGIC4_ROM0_BASE 0xf0000000
40 #define DIGIC4_ROM1_BASE 0xf8000000
41 #define DIGIC4_ROM_MAX_SIZE 0x08000000
42
43 typedef struct DigicBoardState {
44 DigicState *digic;
45 MemoryRegion ram;
46 } DigicBoardState;
47
48 typedef struct DigicBoard {
49 hwaddr ram_size;
50 void (*add_rom0)(DigicBoardState *, hwaddr, const char *);
51 const char *rom0_def_filename;
52 void (*add_rom1)(DigicBoardState *, hwaddr, const char *);
53 const char *rom1_def_filename;
54 } DigicBoard;
55
digic4_board_init(DigicBoard * board)56 static void digic4_board_init(DigicBoard *board)
57 {
58 Error *err = NULL;
59
60 DigicBoardState *s = g_new(DigicBoardState, 1);
61
62 s->digic = DIGIC(object_new(TYPE_DIGIC));
63 object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
64 if (err != NULL) {
65 error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
66 exit(1);
67 }
68
69 memory_region_allocate_system_memory(&s->ram, NULL, "ram", board->ram_size);
70 memory_region_add_subregion(get_system_memory(), 0, &s->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
digic_load_rom(DigicBoardState * s,hwaddr addr,hwaddr max_size,const char * def_filename)81 static void digic_load_rom(DigicBoardState *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 */
digic4_add_k8p3215uqb_rom(DigicBoardState * s,hwaddr addr,const char * def_filename)121 static void digic4_add_k8p3215uqb_rom(DigicBoardState *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 .ram_size = 64 * 1024 * 1024,
139 .add_rom1 = digic4_add_k8p3215uqb_rom,
140 .rom1_def_filename = "canon-a1100-rom1.bin",
141 };
142
canon_a1100_init(MachineState * machine)143 static void canon_a1100_init(MachineState *machine)
144 {
145 digic4_board_init(&digic4_board_canon_a1100);
146 }
147
canon_a1100_machine_init(MachineClass * mc)148 static void canon_a1100_machine_init(MachineClass *mc)
149 {
150 mc->desc = "Canon PowerShot A1100 IS";
151 mc->init = &canon_a1100_init;
152 mc->ignore_memory_transaction_failures = true;
153 }
154
155 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
156