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/datadir.h"
29 #include "hw/boards.h"
30 #include "qemu/error-report.h"
31 #include "hw/arm/digic.h"
32 #include "hw/block/flash.h"
33 #include "hw/loader.h"
34 #include "sysemu/qtest.h"
35 #include "qemu/units.h"
36 #include "qemu/cutils.h"
37
38 #define DIGIC4_ROM0_BASE 0xf0000000
39 #define DIGIC4_ROM1_BASE 0xf8000000
40 #define DIGIC4_ROM_MAX_SIZE 0x08000000
41
42 typedef struct DigicBoard {
43 void (*add_rom0)(DigicState *, hwaddr, const char *);
44 const char *rom0_def_filename;
45 void (*add_rom1)(DigicState *, hwaddr, const char *);
46 const char *rom1_def_filename;
47 } DigicBoard;
48
digic4_board_init(MachineState * machine,DigicBoard * board)49 static void digic4_board_init(MachineState *machine, DigicBoard *board)
50 {
51 Error *err = NULL;
52 DigicState *s = DIGIC(object_new(TYPE_DIGIC));
53 MachineClass *mc = MACHINE_GET_CLASS(machine);
54
55 if (machine->ram_size != mc->default_ram_size) {
56 char *sz = size_to_str(mc->default_ram_size);
57 error_report("Invalid RAM size, should be %s", sz);
58 g_free(sz);
59 exit(EXIT_FAILURE);
60 }
61
62 if (!qdev_realize(DEVICE(s), NULL, &err)) {
63 error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
64 exit(1);
65 }
66
67 memory_region_add_subregion(get_system_memory(), 0, machine->ram);
68
69 if (board->add_rom0) {
70 board->add_rom0(s, DIGIC4_ROM0_BASE,
71 machine->firmware ?: board->rom0_def_filename);
72 }
73
74 if (board->add_rom1) {
75 board->add_rom1(s, DIGIC4_ROM1_BASE,
76 machine->firmware ?: board->rom1_def_filename);
77 }
78 }
79
digic_load_rom(DigicState * s,hwaddr addr,hwaddr max_size,const char * filename)80 static void digic_load_rom(DigicState *s, hwaddr addr,
81 hwaddr max_size, const char *filename)
82 {
83 target_long rom_size;
84
85 if (qtest_enabled()) {
86 /* qtest runs no code so don't attempt a ROM load which
87 * could fail and result in a spurious test failure.
88 */
89 return;
90 }
91
92 if (filename) {
93 char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
94
95 if (!fn) {
96 error_report("Couldn't find rom image '%s'.", filename);
97 exit(1);
98 }
99
100 rom_size = load_image_targphys(fn, addr, max_size);
101 if (rom_size < 0 || rom_size > max_size) {
102 error_report("Couldn't load rom image '%s'.", filename);
103 exit(1);
104 }
105 g_free(fn);
106 }
107 }
108
109 /*
110 * Samsung K8P3215UQB
111 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
112 */
digic4_add_k8p3215uqb_rom(DigicState * s,hwaddr addr,const char * filename)113 static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr,
114 const char *filename)
115 {
116 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
117 #define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
118
119 pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE,
120 NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
121 DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
122 4,
123 0x00EC, 0x007E, 0x0003, 0x0001,
124 0x0555, 0x2aa, 0);
125
126 digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, filename);
127 }
128
129 static DigicBoard digic4_board_canon_a1100 = {
130 .add_rom1 = digic4_add_k8p3215uqb_rom,
131 .rom1_def_filename = "canon-a1100-rom1.bin",
132 };
133
canon_a1100_init(MachineState * machine)134 static void canon_a1100_init(MachineState *machine)
135 {
136 digic4_board_init(machine, &digic4_board_canon_a1100);
137 }
138
canon_a1100_machine_init(MachineClass * mc)139 static void canon_a1100_machine_init(MachineClass *mc)
140 {
141 mc->desc = "Canon PowerShot A1100 IS (ARM946)";
142 mc->init = &canon_a1100_init;
143 mc->ignore_memory_transaction_failures = true;
144 mc->default_ram_size = 64 * MiB;
145 mc->default_ram_id = "ram";
146 }
147
148 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
149