emunand: Preliminary skeleton for emunand in fusee
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hexkyz
@@ -175,6 +175,14 @@ static const device_partition_t g_mmc_devpart_template = {
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.writer = mmc_partition_write,
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};
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static const device_partition_t g_emummc_devpart_template = {
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.sector_size = 512,
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.initializer = NULL,
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.finalizer = NULL,
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.reader = NULL,
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.writer = NULL,
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};
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static int nxfs_mount_partition_gpt_callback(const efi_entry_t *entry, void *param, size_t entry_offset, FILE *disk) {
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(void)entry_offset;
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(void)disk;
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@@ -256,88 +264,173 @@ static int nxfs_mount_partition_gpt_callback(const efi_entry_t *entry, void *par
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return 0;
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}
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int nxfs_mount_all(void) {
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int nxfs_mount_all(bool emunand_enabled, const char *emunand_path) {
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device_partition_t model;
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int rc;
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FILE *rawnand;
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/* Initialize the SD card and its primary partition. */
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/* Setup a template for the SD card. */
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model = g_mmc_devpart_template;
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model.device_struct = &g_sd_mmcpart;
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model.start_sector = 0;
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model.num_sectors = 1u << 30; /* arbitrary numbers of sectors. TODO: find the size of the SD in sectors. */
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/* Mount the SD card device. */
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rc = fsdev_mount_device("sdmc", &model, true);
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if (rc == -1) {
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return -1;
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}
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/* Register the SD card device. */
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rc = fsdev_register_device("sdmc");
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if (rc == -1) {
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return -1;
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}
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/* Boot0. */
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model = g_mmc_devpart_template;
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model.device_struct = &g_emmc_boot0_mmcpart;
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model.start_sector = 0;
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model.num_sectors = 0x184000 / model.sector_size;
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if (emunand_enabled) {
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/* Setup emunand paths. */
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char emu_boot0_path[0x100];
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char emu_boot1_path[0x100];
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char emu_rawnand_path[0x100];
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snprintf(emu_boot0_path, sizeof(emu_boot0_path) - 1, "sdmc:/%s/%s", emunand_path, "boot0");
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snprintf(emu_boot1_path, sizeof(emu_boot1_path) - 1, "sdmc:/%s/%s", emunand_path, "boot1");
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snprintf(emu_rawnand_path, sizeof(emu_rawnand_path) - 1, "sdmc:/%s/%s", emunand_path, "rawnand");
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rc = rawdev_mount_device("boot0", &model, true);
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if (rc == -1) {
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return -1;
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}
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rc = rawdev_register_device("boot0");
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if (rc == -1) {
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return -1;
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}
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/* Boot1. */
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model = g_mmc_devpart_template;
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model.device_struct = &g_emmc_boot1_mmcpart;
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model.start_sector = 0;
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model.num_sectors = 0x80000 / model.sector_size;
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rc = rawdev_mount_device("boot1", &model, false);
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if (rc == -1) {
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return -1;
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/* Setup an emulation template for boot0. */
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model = g_emummc_devpart_template;
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model.start_sector = 0;
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model.num_sectors = 0x184000 / model.sector_size;
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/* Mount emulated boot0 device. */
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rc = emudev_mount_device("boot0", emu_boot0_path, &model);
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if (rc == -1) {
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return -1;
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}
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/* Register emulated boot0 device. */
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rc = emudev_register_device("boot0");
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if (rc == -1) {
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return -1;
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}
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/* Setup an emulation template for boot1. */
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model = g_emummc_devpart_template;
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model.start_sector = 0;
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model.num_sectors = 0x80000 / model.sector_size;
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/* Mount emulated boot1 device. */
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rc = emudev_mount_device("boot1", emu_boot1_path, &model);
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if (rc == -1) {
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return -1;
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}
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/* Don't register emulated boot1 for now. */
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/* Setup a template for raw NAND. */
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model = g_emummc_devpart_template;
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model.start_sector = 0;
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model.num_sectors = (256ull << 30) / model.sector_size;
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/* Mount emulated raw NAND device. */
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rc = emudev_mount_device("rawnand", emu_rawnand_path, &model);
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if (rc == -1) {
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return -1;
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}
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/* Register emulated raw NAND device. */
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rc = emudev_register_device("rawnand");
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if (rc == -1) {
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return -1;
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}
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/* Open emulated raw NAND device. */
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rawnand = fopen("rawnand:/", "rb");
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if (rawnand == NULL) {
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return -1;
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}
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/* Iterate the GPT and mount each emulated raw NAND partition. */
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rc = gpt_iterate_through_entries(rawnand, model.sector_size, nxfs_mount_partition_gpt_callback, &model);
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/* Close emulated raw NAND device. */
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fclose(rawnand);
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} else {
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/* Setup a template for boot0. */
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model = g_mmc_devpart_template;
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model.device_struct = &g_emmc_boot0_mmcpart;
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model.start_sector = 0;
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model.num_sectors = 0x184000 / model.sector_size;
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/* Mount boot0 device. */
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rc = rawdev_mount_device("boot0", &model, true);
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if (rc == -1) {
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return -1;
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}
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/* Register boot0 device. */
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rc = rawdev_register_device("boot0");
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if (rc == -1) {
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return -1;
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}
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/* Setup a template for boot1. */
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model = g_mmc_devpart_template;
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model.device_struct = &g_emmc_boot1_mmcpart;
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model.start_sector = 0;
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model.num_sectors = 0x80000 / model.sector_size;
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/* Mount boot1 device. */
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rc = rawdev_mount_device("boot1", &model, false);
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if (rc == -1) {
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return -1;
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}
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/* Don't register boot1 for now. */
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/* Setup a template for raw NAND. */
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model = g_mmc_devpart_template;
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model.device_struct = &g_emmc_user_mmcpart;
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model.start_sector = 0;
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model.num_sectors = (256ull << 30) / model.sector_size;
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/* Mount raw NAND device. */
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rc = rawdev_mount_device("rawnand", &model, false);
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if (rc == -1) {
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return -1;
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}
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/* Register raw NAND device. */
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rc = rawdev_register_device("rawnand");
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if (rc == -1) {
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return -1;
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}
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/* Open raw NAND device. */
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rawnand = fopen("rawnand:/", "rb");
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if (rawnand == NULL) {
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return -1;
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}
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/* Iterate the GPT and mount each raw NAND partition. */
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rc = gpt_iterate_through_entries(rawnand, model.sector_size, nxfs_mount_partition_gpt_callback, &model);
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/* Close raw NAND device. */
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fclose(rawnand);
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}
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/* Don't register boot1 for now. */
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/* Raw NAND (excluding boot partitions), and its partitions. */
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model = g_mmc_devpart_template;
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model = g_mmc_devpart_template;
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model.device_struct = &g_emmc_user_mmcpart;
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model.start_sector = 0;
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model.num_sectors = (256ull << 30) / model.sector_size;
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rc = rawdev_mount_device("rawnand", &model, false);
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if (rc == -1) {
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return -1;
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}
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rc = rawdev_register_device("rawnand");
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if (rc == -1) {
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return -1;
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}
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rawnand = fopen("rawnand:/", "rb");
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if (rawnand == NULL) {
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return -1;
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}
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rc = gpt_iterate_through_entries(rawnand, model.sector_size, nxfs_mount_partition_gpt_callback, &model);
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fclose(rawnand);
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/* Set the default file system device. */
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if (rc == 0) {
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rc = fsdev_set_default_device("sdmc");
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}
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@@ -345,6 +438,6 @@ int nxfs_mount_all(void) {
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return rc;
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}
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int nxfs_unmount_all(void) {
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return ((fsdev_unmount_all() || rawdev_unmount_all()) ? -1 : 0);
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int nxfs_unmount_all() {
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return ((fsdev_unmount_all() || rawdev_unmount_all() || emudev_unmount_all()) ? -1 : 0);
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}
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