qemu

FORK: QEMU emulator
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digic_boards.c (4529B)

      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)