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
43typedef struct DigicBoardState {
44 DigicState *digic;
45 MemoryRegion ram;
46} DigicBoardState;
47
48typedef 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
56static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size)
57{
58 memory_region_allocate_system_memory(&s->ram, NULL, "ram", ram_size);
59 memory_region_add_subregion(get_system_memory(), 0, &s->ram);
60}
61
62static void digic4_board_init(DigicBoard *board)
63{
64 Error *err = NULL;
65
66 DigicBoardState *s = g_new(DigicBoardState, 1);
67
68 s->digic = DIGIC(object_new(TYPE_DIGIC));
69 object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
70 if (err != NULL) {
71 error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
72 exit(1);
73 }
74
75 digic4_board_setup_ram(s, board->ram_size);
76
77 if (board->add_rom0) {
78 board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename);
79 }
80
81 if (board->add_rom1) {
82 board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename);
83 }
84}
85
86static void digic_load_rom(DigicBoardState *s, hwaddr addr,
87 hwaddr max_size, const char *def_filename)
88{
89 target_long rom_size;
90 const char *filename;
91
92 if (qtest_enabled()) {
93 /* qtest runs no code so don't attempt a ROM load which
94 * could fail and result in a spurious test failure.
95 */
96 return;
97 }
98
99 if (bios_name) {
100 filename = bios_name;
101 } else {
102 filename = def_filename;
103 }
104
105 if (filename) {
106 char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
107
108 if (!fn) {
109 error_report("Couldn't find rom image '%s'.", filename);
110 exit(1);
111 }
112
113 rom_size = load_image_targphys(fn, addr, max_size);
114 if (rom_size < 0 || rom_size > max_size) {
115 error_report("Couldn't load rom image '%s'.", filename);
116 exit(1);
117 }
118 g_free(fn);
119 }
120}
121
122/*
123 * Samsung K8P3215UQB
124 * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
125 */
126static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr,
127 const char *def_filename)
128{
129#define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
130#define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
131
132 pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE,
133 NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
134 DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
135 4,
136 0x00EC, 0x007E, 0x0003, 0x0001,
137 0x0555, 0x2aa, 0);
138
139 digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, def_filename);
140}
141
142static DigicBoard digic4_board_canon_a1100 = {
143 .ram_size = 64 * 1024 * 1024,
144 .add_rom1 = digic4_add_k8p3215uqb_rom,
145 .rom1_def_filename = "canon-a1100-rom1.bin",
146};
147
148static void canon_a1100_init(MachineState *machine)
149{
150 digic4_board_init(&digic4_board_canon_a1100);
151}
152
153static void canon_a1100_machine_init(MachineClass *mc)
154{
155 mc->desc = "Canon PowerShot A1100 IS";
156 mc->init = &canon_a1100_init;
157 mc->ignore_memory_transaction_failures = true;
158}
159
160DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
161