153 lines
4.5 KiB
C
153 lines
4.5 KiB
C
/*
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* QEMU model of the Canon DIGIC boards (cameras indeed :).
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*
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* Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
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*
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* This model is based on reverse engineering efforts
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* made by CHDK (http://chdk.wikia.com) and
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* Magic Lantern (http://www.magiclantern.fm) projects
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* contributors.
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*
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* See docs here:
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* http://magiclantern.wikia.com/wiki/Register_Map
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu-common.h"
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#include "qemu/datadir.h"
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#include "cpu.h"
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#include "hw/boards.h"
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#include "exec/address-spaces.h"
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#include "qemu/error-report.h"
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#include "hw/arm/digic.h"
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#include "hw/block/flash.h"
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#include "hw/loader.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/qtest.h"
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#include "qemu/units.h"
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#include "qemu/cutils.h"
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#define DIGIC4_ROM0_BASE 0xf0000000
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#define DIGIC4_ROM1_BASE 0xf8000000
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#define DIGIC4_ROM_MAX_SIZE 0x08000000
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typedef struct DigicBoard {
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void (*add_rom0)(DigicState *, hwaddr, const char *);
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const char *rom0_def_filename;
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void (*add_rom1)(DigicState *, hwaddr, const char *);
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const char *rom1_def_filename;
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} DigicBoard;
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static void digic4_board_init(MachineState *machine, DigicBoard *board)
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{
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Error *err = NULL;
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DigicState *s = DIGIC(object_new(TYPE_DIGIC));
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MachineClass *mc = MACHINE_GET_CLASS(machine);
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if (machine->ram_size != mc->default_ram_size) {
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char *sz = size_to_str(mc->default_ram_size);
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error_report("Invalid RAM size, should be %s", sz);
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g_free(sz);
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exit(EXIT_FAILURE);
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}
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if (!qdev_realize(DEVICE(s), NULL, &err)) {
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error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
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exit(1);
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}
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memory_region_add_subregion(get_system_memory(), 0, machine->ram);
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if (board->add_rom0) {
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board->add_rom0(s, DIGIC4_ROM0_BASE,
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machine->firmware ?: board->rom0_def_filename);
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}
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if (board->add_rom1) {
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board->add_rom1(s, DIGIC4_ROM1_BASE,
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machine->firmware ?: board->rom1_def_filename);
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}
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}
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static void digic_load_rom(DigicState *s, hwaddr addr,
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hwaddr max_size, const char *filename)
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{
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target_long rom_size;
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if (qtest_enabled()) {
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/* qtest runs no code so don't attempt a ROM load which
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* could fail and result in a spurious test failure.
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*/
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return;
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}
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if (filename) {
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char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
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if (!fn) {
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error_report("Couldn't find rom image '%s'.", filename);
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exit(1);
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}
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rom_size = load_image_targphys(fn, addr, max_size);
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if (rom_size < 0 || rom_size > max_size) {
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error_report("Couldn't load rom image '%s'.", filename);
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exit(1);
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}
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g_free(fn);
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}
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}
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/*
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* Samsung K8P3215UQB
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* 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
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*/
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static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr,
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const char *filename)
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{
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#define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
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#define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024)
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pflash_cfi02_register(addr, "pflash", FLASH_K8P3215UQB_SIZE,
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NULL, FLASH_K8P3215UQB_SECTOR_SIZE,
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DIGIC4_ROM_MAX_SIZE / FLASH_K8P3215UQB_SIZE,
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4,
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0x00EC, 0x007E, 0x0003, 0x0001,
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0x0555, 0x2aa, 0);
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digic_load_rom(s, addr, FLASH_K8P3215UQB_SIZE, filename);
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}
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static DigicBoard digic4_board_canon_a1100 = {
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.add_rom1 = digic4_add_k8p3215uqb_rom,
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.rom1_def_filename = "canon-a1100-rom1.bin",
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};
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static void canon_a1100_init(MachineState *machine)
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{
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digic4_board_init(machine, &digic4_board_canon_a1100);
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}
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static void canon_a1100_machine_init(MachineClass *mc)
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{
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mc->desc = "Canon PowerShot A1100 IS (ARM946)";
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mc->init = &canon_a1100_init;
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mc->ignore_memory_transaction_failures = true;
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mc->default_ram_size = 64 * MiB;
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mc->default_ram_id = "ram";
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}
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DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
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