Module embassy_rp::block

Support for the RP235x Boot ROM’s “Block” structures

Blocks contain pointers, to form Block Loops.

The IMAGE_DEF Block (here the ImageDef type) tells the ROM how to boot a firmware image. The PARTITION_TABLE Block (here the PartitionTable type) tells the ROM how to divide the flash space up into partitions.

Structs

• Block
  A Block as understood by the Boot ROM.
• Partition
  Describes a Partition
• PartitionTableBlock
  Describes a partition table.
• UnpartitionedSpace
  Describes a unpartitioned space

Enums

• Architecture
  The supported RP2350 CPU architectures
• Link
  Kinds of linked partition
• PartitionFlag
  Flags that a Partition can have
• Permission
  Permissions that a Partition can have
• Security
  The kinds of Secure Boot we support
• UnpartitionedFlag
  Flags that a Partition can have

Constants

• IMAGE_TYPE_DATA
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark an image as data
• IMAGE_TYPE_EXE
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark an image as an executable
• IMAGE_TYPE_EXE_CHIP_RP2040
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU as an RP2040
• IMAGE_TYPE_EXE_CHIP_RP2350
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU as an RP2350
• IMAGE_TYPE_EXE_CPU_ARM
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU type as Arm
• IMAGE_TYPE_EXE_CPU_RISCV
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU type as RISC-V
• IMAGE_TYPE_EXE_TYPE_SECURITY_NS
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU security mode as Non Secure
• IMAGE_TYPE_EXE_TYPE_SECURITY_S
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU security mode as Non Secure
• IMAGE_TYPE_EXE_TYPE_SECURITY_UNSPECIFIED
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the CPU security mode as unspecified
• IMAGE_TYPE_INVALID
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark an image as invalid
• IMAGE_TYPE_TBYB
  A ITEM_1BS_IMAGE_TYPE value bitmask to mark the image as Try Before You Buy.
• ITEM_1BS_ENTRY_POINT
  An item ID for encoding the image’s Entry Point
• ITEM_1BS_HASH_VALUE
  An item ID for encoding a Hash
• ITEM_1BS_IMAGE_TYPE
  An item ID for encoding an Image Type
• ITEM_1BS_ROLLING_WINDOW_DELTA
  An item ID for encoding a Rolling Window Delta
• ITEM_1BS_SALT
  An item ID for encoding a Salt
• ITEM_1BS_SIGNATURE
  An item ID for encoding a Signature
• ITEM_1BS_VECTOR_TABLE
  An item ID for encoding a Vector Table address
• ITEM_1BS_VERSION
  An item ID for encoding a Version
• ITEM_2BS_HASH_DEF
  An item ID for encoding the definition of a Hash
• ITEM_2BS_IGNORED
  An item ID for encoding a placeholder entry that is ignored
• ITEM_2BS_LAST
  An item ID for encoding the special last item in a Block
• ITEM_2BS_LOAD_MAP
  An item ID for encoding a Load Map
• ITEM_2BS_PARTITION_TABLE
  An item ID for encoding a Partition Table
• PARTITION_TABLE_MAX_ITEMS
  We make our partition table this fixed size.

Functions

• item_entry_point
  Create an Entry Point item.
• item_generic_1bs
  Make an item containing a tag, 1 byte length and two extra bytes.
• item_generic_2bs
  Make an item containing a tag, 2 byte length and one extra byte.
• item_ignored
  Create Image Type item, of type IGNORED.
• item_image_type_data
  Create Image Type item, of type DATA.
• item_image_type_exe
  Create Image Type item, of type EXE.
• item_image_type_invalid
  Create Image Type item, of type INVALID.
• item_last
  Create a Block Last item.
• item_rolling_window
  Create an Rolling Window item.
• item_vector_table
  Create a Vector Table item.

Type Aliases

• ImageDef
  An Image Definition has one item in it - an ITEM_1BS_IMAGE_TYPE