xref: /openbmc/qemu/hw/arm/digic_boards.c (revision d2dfe0b5)
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 
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 
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  */
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 
134 static void canon_a1100_init(MachineState *machine)
135 {
136     digic4_board_init(machine, &digic4_board_canon_a1100);
137 }
138 
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