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Diffstat (limited to 'src/hw/arm/digic_boards.c')
| -rw-r--r-- | src/hw/arm/digic_boards.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/hw/arm/digic_boards.c b/src/hw/arm/digic_boards.c new file mode 100644 index 0000000..710045a --- /dev/null +++ b/src/hw/arm/digic_boards.c @@ -0,0 +1,157 @@ +/* + * 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 "hw/boards.h" +#include "exec/address-spaces.h" +#include "qemu/error-report.h" +#include "hw/arm/digic.h" +#include "hw/block/flash.h" +#include "hw/loader.h" +#include "sysemu/sysemu.h" +#include "sysemu/qtest.h" + +#define DIGIC4_ROM0_BASE 0xf0000000 +#define DIGIC4_ROM1_BASE 0xf8000000 +#define DIGIC4_ROM_MAX_SIZE 0x08000000 + +typedef struct DigicBoardState { + DigicState *digic; + MemoryRegion ram; +} DigicBoardState; + +typedef struct DigicBoard { + hwaddr ram_size; + void (*add_rom0)(DigicBoardState *, hwaddr, const char *); + const char *rom0_def_filename; + void (*add_rom1)(DigicBoardState *, hwaddr, const char *); + const char *rom1_def_filename; +} DigicBoard; + +static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size) +{ + memory_region_allocate_system_memory(&s->ram, NULL, "ram", ram_size); + memory_region_add_subregion(get_system_memory(), 0, &s->ram); +} + +static void digic4_board_init(DigicBoard *board) +{ + Error *err = NULL; + + DigicBoardState *s = g_new(DigicBoardState, 1); + + s->digic = DIGIC(object_new(TYPE_DIGIC)); + object_property_set_bool(OBJECT(s->digic), true, "realized", &err); + if (err != NULL) { + error_report("Couldn't realize DIGIC SoC: %s", + error_get_pretty(err)); + exit(1); + } + + digic4_board_setup_ram(s, board->ram_size); + + if (board->add_rom0) { + board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename); + } + + if (board->add_rom1) { + board->add_rom1(s, DIGIC4_ROM1_BASE, board->rom1_def_filename); + } +} + +static void digic_load_rom(DigicBoardState *s, hwaddr addr, + hwaddr max_size, const char *def_filename) +{ + target_long rom_size; + const char *filename; + + 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 (bios_name) { + filename = bios_name; + } else { + filename = def_filename; + } + + 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(DigicBoardState *s, hwaddr addr, + const char *def_filename) +{ +#define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024) +#define FLASH_K8P3215UQB_SECTOR_SIZE (64 * 1024) + + pflash_cfi02_register(addr, NULL, "pflash", FLASH_K8P3215UQB_SIZE, + NULL, FLASH_K8P3215UQB_SECTOR_SIZE, + FLASH_K8P3215UQB_SIZE / 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, def_filename); +} + +static DigicBoard digic4_board_canon_a1100 = { + .ram_size = 64 * 1024 * 1024, + .add_rom1 = digic4_add_k8p3215uqb_rom, + .rom1_def_filename = "canon-a1100-rom1.bin", +}; + +static void canon_a1100_init(MachineState *machine) +{ + digic4_board_init(&digic4_board_canon_a1100); +} + +static void canon_a1100_machine_init(MachineClass *mc) +{ + mc->desc = "Canon PowerShot A1100 IS"; + mc->init = &canon_a1100_init; +} + +DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init) |
