#include <part.h>
#include <malloc.h>
-static const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
+const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
struct efi_disk_obj {
/* Generic EFI object parent class data */
/* EFI Interface Media descriptor struct, referenced by ops */
struct efi_block_io_media media;
/* EFI device path to this block device */
- struct efi_device_path_file_path *dp;
+ struct efi_device_path *dp;
+ /* partition # */
+ unsigned int part;
+ /* handle to filesys proto (for partition objects) */
+ struct efi_simple_file_system_protocol *volume;
/* Offset into disk for simple partitions */
lbaint_t offset;
/* Internal block device */
- const struct blk_desc *desc;
+ struct blk_desc *desc;
};
-static efi_status_t EFIAPI efi_disk_open_block(void *handle,
- efi_guid_t *protocol, void **protocol_interface,
- void *agent_handle, void *controller_handle,
- uint32_t attributes)
-{
- struct efi_disk_obj *diskobj = handle;
-
- *protocol_interface = &diskobj->ops;
-
- return EFI_SUCCESS;
-}
-
-static efi_status_t EFIAPI efi_disk_open_dp(void *handle, efi_guid_t *protocol,
- void **protocol_interface, void *agent_handle,
- void *controller_handle, uint32_t attributes)
-{
- struct efi_disk_obj *diskobj = handle;
-
- *protocol_interface = diskobj->dp;
-
- return EFI_SUCCESS;
-}
-
static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
char extended_verification)
{
EFI_DISK_WRITE,
};
-static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
+static efi_status_t efi_disk_rw_blocks(struct efi_block_io *this,
u32 media_id, u64 lba, unsigned long buffer_size,
void *buffer, enum efi_disk_direction direction)
{
/* We only support full block access */
if (buffer_size & (blksz - 1))
- return EFI_EXIT(EFI_DEVICE_ERROR);
+ return EFI_DEVICE_ERROR;
if (direction == EFI_DISK_READ)
n = blk_dread(desc, lba, blocks, buffer);
debug("EFI: %s:%d n=%lx blocks=%x\n", __func__, __LINE__, n, blocks);
if (n != blocks)
- return EFI_EXIT(EFI_DEVICE_ERROR);
+ return EFI_DEVICE_ERROR;
- return EFI_EXIT(EFI_SUCCESS);
+ return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
- u32 media_id, u64 lba, unsigned long buffer_size,
+ u32 media_id, u64 lba, efi_uintn_t buffer_size,
void *buffer)
{
void *real_buffer = buffer;
real_buffer = efi_bounce_buffer;
#endif
- EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
+ EFI_ENTRY("%p, %x, %" PRIx64 ", %zx, %p", this, media_id, lba,
buffer_size, buffer);
r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
}
static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
- u32 media_id, u64 lba, unsigned long buffer_size,
+ u32 media_id, u64 lba, efi_uintn_t buffer_size,
void *buffer)
{
void *real_buffer = buffer;
real_buffer = efi_bounce_buffer;
#endif
- EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
+ EFI_ENTRY("%p, %x, %" PRIx64 ", %zx, %p", this, media_id, lba,
buffer_size, buffer);
/* Populate bounce buffer if necessary */
.flush_blocks = &efi_disk_flush_blocks,
};
-static void efi_disk_add_dev(const char *name,
- const char *if_typename,
- const struct blk_desc *desc,
- int dev_index,
- lbaint_t offset)
+/*
+ * Get the simple file system protocol for a file device path.
+ *
+ * The full path provided is split into device part and into a file
+ * part. The device part is used to find the handle on which the
+ * simple file system protocol is installed.
+ *
+ * @full_path device path including device and file
+ * @return simple file system protocol
+ */
+struct efi_simple_file_system_protocol *
+efi_fs_from_path(struct efi_device_path *full_path)
+{
+ struct efi_object *efiobj;
+ struct efi_handler *handler;
+ struct efi_device_path *device_path;
+ struct efi_device_path *file_path;
+ efi_status_t ret;
+
+ /* Split the path into a device part and a file part */
+ ret = efi_dp_split_file_path(full_path, &device_path, &file_path);
+ if (ret != EFI_SUCCESS)
+ return NULL;
+ efi_free_pool(file_path);
+
+ /* Get the EFI object for the partition */
+ efiobj = efi_dp_find_obj(device_path, NULL);
+ efi_free_pool(device_path);
+ if (!efiobj)
+ return NULL;
+
+ /* Find the simple file system protocol */
+ ret = efi_search_protocol(efiobj, &efi_simple_file_system_protocol_guid,
+ &handler);
+ if (ret != EFI_SUCCESS)
+ return NULL;
+
+ /* Return the simple file system protocol for the partition */
+ return handler->protocol_interface;
+}
+
+/*
+ * Create a handle for a partition or disk
+ *
+ * @parent parent handle
+ * @dp_parent parent device path
+ * @if_typename interface name for block device
+ * @desc internal block device
+ * @dev_index device index for block device
+ * @offset offset into disk for simple partitions
+ * @return disk object
+ */
+static efi_status_t efi_disk_add_dev(
+ efi_handle_t parent,
+ struct efi_device_path *dp_parent,
+ const char *if_typename,
+ struct blk_desc *desc,
+ int dev_index,
+ lbaint_t offset,
+ unsigned int part,
+ struct efi_disk_obj **disk)
{
struct efi_disk_obj *diskobj;
- struct efi_device_path_file_path *dp;
- int objlen = sizeof(*diskobj) + (sizeof(*dp) * 2);
+ efi_status_t ret;
/* Don't add empty devices */
if (!desc->lba)
- return;
+ return EFI_NOT_READY;
+
+ diskobj = calloc(1, sizeof(*diskobj));
+ if (!diskobj)
+ return EFI_OUT_OF_RESOURCES;
- diskobj = calloc(1, objlen);
+ /* Hook up to the device list */
+ efi_add_handle(&diskobj->parent);
/* Fill in object data */
- diskobj->parent.protocols[0].guid = &efi_block_io_guid;
- diskobj->parent.protocols[0].open = efi_disk_open_block;
- diskobj->parent.protocols[1].guid = &efi_guid_device_path;
- diskobj->parent.protocols[1].open = efi_disk_open_dp;
- diskobj->parent.handle = diskobj;
+ if (part) {
+ struct efi_device_path *node = efi_dp_part_node(desc, part);
+
+ diskobj->dp = efi_dp_append_node(dp_parent, node);
+ efi_free_pool(node);
+ } else {
+ diskobj->dp = efi_dp_from_part(desc, part);
+ }
+ diskobj->part = part;
+ ret = efi_add_protocol(diskobj->parent.handle, &efi_block_io_guid,
+ &diskobj->ops);
+ if (ret != EFI_SUCCESS)
+ return ret;
+ ret = efi_add_protocol(diskobj->parent.handle, &efi_guid_device_path,
+ diskobj->dp);
+ if (ret != EFI_SUCCESS)
+ return ret;
+ if (part >= 1) {
+ diskobj->volume = efi_simple_file_system(desc, part,
+ diskobj->dp);
+ ret = efi_add_protocol(diskobj->parent.handle,
+ &efi_simple_file_system_protocol_guid,
+ diskobj->volume);
+ if (ret != EFI_SUCCESS)
+ return ret;
+ }
diskobj->ops = block_io_disk_template;
diskobj->ifname = if_typename;
diskobj->dev_index = dev_index;
diskobj->media.block_size = desc->blksz;
diskobj->media.io_align = desc->blksz;
diskobj->media.last_block = desc->lba - offset;
+ if (part != 0)
+ diskobj->media.logical_partition = 1;
diskobj->ops.media = &diskobj->media;
-
- /* Fill in device path */
- dp = (void*)&diskobj[1];
- diskobj->dp = dp;
- dp[0].dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
- dp[0].dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
- dp[0].dp.length = sizeof(*dp);
- ascii2unicode(dp[0].str, name);
-
- dp[1].dp.type = DEVICE_PATH_TYPE_END;
- dp[1].dp.sub_type = DEVICE_PATH_SUB_TYPE_END;
- dp[1].dp.length = sizeof(*dp);
-
- /* Hook up to the device list */
- list_add_tail(&diskobj->parent.link, &efi_obj_list);
+ if (disk)
+ *disk = diskobj;
+ return EFI_SUCCESS;
}
-static int efi_disk_create_eltorito(struct blk_desc *desc,
- const char *if_typename,
- int diskid,
- const char *pdevname)
+/*
+ * Create handles and protocols for the partitions of a block device
+ *
+ * @parent handle of the parent disk
+ * @blk_desc block device
+ * @if_typename interface type
+ * @diskid device number
+ * @pdevname device name
+ * @return number of partitions created
+ */
+int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
+ const char *if_typename, int diskid,
+ const char *pdevname)
{
int disks = 0;
-#if CONFIG_IS_ENABLED(ISO_PARTITION)
char devname[32] = { 0 }; /* dp->str is u16[32] long */
disk_partition_t info;
- int part = 1;
-
- if (desc->part_type != PART_TYPE_ISO)
- return 0;
-
- while (!part_get_info(desc, part, &info)) {
+ int part;
+ struct efi_device_path *dp = NULL;
+ efi_status_t ret;
+ struct efi_handler *handler;
+
+ /* Get the device path of the parent */
+ ret = efi_search_protocol(parent, &efi_guid_device_path, &handler);
+ if (ret == EFI_SUCCESS)
+ dp = handler->protocol_interface;
+
+ /* Add devices for each partition */
+ for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
+ if (part_get_info(desc, part, &info))
+ continue;
snprintf(devname, sizeof(devname), "%s:%d", pdevname,
part);
- efi_disk_add_dev(devname, if_typename, desc, diskid,
- info.start);
- part++;
+ ret = efi_disk_add_dev(parent, dp, if_typename, desc, diskid,
+ info.start, part, NULL);
+ if (ret != EFI_SUCCESS) {
+ printf("Adding partition %s failed\n", pdevname);
+ continue;
+ }
disks++;
}
-#endif
return disks;
}
*
* This gets called from do_bootefi_exec().
*/
-int efi_disk_register(void)
+efi_status_t efi_disk_register(void)
{
+ struct efi_disk_obj *disk;
int disks = 0;
+ efi_status_t ret;
#ifdef CONFIG_BLK
struct udevice *dev;
- for (uclass_first_device(UCLASS_BLK, &dev);
- dev;
- uclass_next_device(&dev)) {
+ for (uclass_first_device_check(UCLASS_BLK, &dev); dev;
+ uclass_next_device_check(&dev)) {
struct blk_desc *desc = dev_get_uclass_platdata(dev);
- const char *if_typename = dev->driver->name;
+ const char *if_typename = blk_get_if_type_name(desc->if_type);
+ /* Add block device for the full device */
printf("Scanning disk %s...\n", dev->name);
- efi_disk_add_dev(dev->name, if_typename, desc, desc->devnum, 0);
+ ret = efi_disk_add_dev(NULL, NULL, if_typename,
+ desc, desc->devnum, 0, 0, &disk);
+ if (ret == EFI_NOT_READY) {
+ printf("Disk %s not ready\n", dev->name);
+ continue;
+ }
+ if (ret) {
+ printf("ERROR: failure to add disk device %s, r = %lu\n",
+ dev->name, ret & ~EFI_ERROR_MASK);
+ return ret;
+ }
disks++;
- /*
- * El Torito images show up as block devices in an EFI world,
- * so let's create them here
- */
- disks += efi_disk_create_eltorito(desc, if_typename,
- desc->devnum, dev->name);
+ /* Partitions show up as block devices in EFI */
+ disks += efi_disk_create_partitions(
+ disk->parent.handle, desc, if_typename,
+ desc->devnum, dev->name);
}
#else
int i, if_type;
snprintf(devname, sizeof(devname), "%s%d",
if_typename, i);
- efi_disk_add_dev(devname, if_typename, desc, i, 0);
+
+ /* Add block device for the full device */
+ ret = efi_disk_add_dev(NULL, NULL, if_typename, desc,
+ i, 0, 0, &disk);
+ if (ret == EFI_NOT_READY) {
+ printf("Disk %s not ready\n", devname);
+ continue;
+ }
+ if (ret) {
+ printf("ERROR: failure to add disk device %s, r = %lu\n",
+ devname, ret & ~EFI_ERROR_MASK);
+ return ret;
+ }
disks++;
- /*
- * El Torito images show up as block devices
- * in an EFI world, so let's create them here
- */
- disks += efi_disk_create_eltorito(desc, if_typename,
- i, devname);
+ /* Partitions show up as block devices in EFI */
+ disks += efi_disk_create_partitions(
+ disk->parent.handle, desc,
+ if_typename, i, devname);
}
}
#endif
printf("Found %d disks\n", disks);
- return 0;
+ return EFI_SUCCESS;
}
projects / people / ms / u-boot.git / blobdiff