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