This patch series adds support for the EEPROM v3 API.
V3 is backwards compatible to V2 and therefore, the V2 image still exists at the beginning. Only the API version changed from 2 to 3.
V3 is a block-based memory layout organized as singled-linked list with different types of blocks. This is a more flexible approach and allows us to extend it by more block types in the future.
The V3 data starts with a 8-byte large header which defines the block count (u8), V3 subversion (u8) and data payload length (u16). Additionally the header contains a CRC8 checksum a 3 reserved bytes.
Each block starts with a 4-byte large header which defined the block type (u8), the absolute address of the next block (u16) and a CRC8 checksum. The content itself is defined via the block type and we currently have 2 different types:
1) MAC: Contains the Ethernet interface number (u8), MAC address (6 x u8) and a CRC8 checksum.
Daniel Schultz (6): board: phytec: common: Move eeprom read to new function board: phytec: common: Define PHYTEC_API2_DATA_LEN board: phytec: common: Move API v2 init to new function board: phytec: common: Add API v3 board: phytec: common: k3: Set MAC configs: phycore_am62x_a53_defconfig: Enable CONFIG_ENV_OVERWRITE
board/phytec/common/Kconfig | 9 + board/phytec/common/Makefile | 2 +- board/phytec/common/k3/board.c | 23 ++ board/phytec/common/phytec_som_detection.c | 228 +++++++++++++++--- board/phytec/common/phytec_som_detection.h | 9 + .../common/phytec_som_detection_blocks.c | 105 ++++++++ .../common/phytec_som_detection_blocks.h | 61 +++++ configs/phycore_am62x_a53_defconfig | 1 + 8 files changed, 408 insertions(+), 30 deletions(-) create mode 100644 board/phytec/common/phytec_som_detection_blocks.c create mode 100644 board/phytec/common/phytec_som_detection_blocks.h