[PATCH v6 0/7] fwu: gpt: implement read_mdata and write_mdata callbacks
sughosh.ganu at linaro.org
Fri Mar 24 13:05:59 CET 2023
On Tue, 7 Mar 2023 at 04:48, <jassisinghbrar at gmail.com> wrote:
> From: Jassi Brar <jaswinder.singh at linaro.org>
> The patchset reduces ~400 lines of code, while keeping the functionality same and making
> meta-data operations much faster (by using cached structures).
> meta-data copies (primary and secondary) are being handled by the backend/storage layer
> instead of the common core in fwu.c (as also noted by Ilias) that is, gpt_blk.c manages
> meta-data and similarly raw_mtd.c will have to do the same when it arrives. The code
> could by make smaller, cleaner and optimised.
> Basic idea:
> Introduce .read_mdata() and .write_mdata() in fwu_mdata_ops that simply read/write
> meta-data copy. The core code takes care of integrity and redundancy of the meta-data,
> as a result we can get rid of every other callback .get_mdata() .update_mdata()
> .get_mdata_part_num() .read_mdata_partition() .write_mdata_partition() and the
> corresponding wrapper functions thereby making the code 100s of LOC smaller.
> Get rid of fwu_check_mdata_validity() and fwu_mdata_check() which expected underlying
> layer to manage and verify mdata copies.
> Implement fwu_get_verified_mdata(struct fwu_mdata *mdata) public function that reads,
> verifies and, if needed, fixes the meta-data copies.
> Verified copy of meta-data is now cached as 'g_mdata' in fwu.c, which avoids multiple
> low-level expensive read and parse calls.
> gpt meta-data partition numbers are now cached in gpt_blk.c, so that we don't have to do expensive part_get_info() and uid ops.
> Changes since v5:
> * Fix SANDBOX tests
> * Removed '@' from dt nodes
> * misc cosmetic changes suggested by Etienne
> Changes since v4:
> * Change fwu-mdata-mtd bindings to not require external changes
> * Handle 'part == BOTH_PARTS' in fwu_sync_mdata
> * use parts_ok and parts_mdata instead of pri/sec_ok and p/s_mdata
> Changes since v3:
> * Fix error log wording
> * call fwu_write_mdata() with part & PRIMARY_PART ? true: false
> Changes since v2:
> * Drop whitespace changes
> * Fix missing mdata copy before return
> Changes since v1:
> * Fix typos and misc cosmetic changes
> * Catch error returns
> Jassi Brar (7):
> dt/bindings: fwu-mdata-mtd: drop changes outside FWU
> fwu: gpt: use cached meta-data partition numbers
> fwu: move meta-data management in core
> fwu: gpt: implement read_mdata and write_mdata callbacks
> fwu: meta-data: switch to management by common code
> fwu: rename fwu_get_verified_mdata to fwu_get_mdata
> test: dm: fwu: fix for the updated api
> cmd/fwu_mdata.c | 17 +-
> .../firmware/fwu-mdata-mtd.yaml | 105 ++++++-
> drivers/fwu-mdata/fwu-mdata-uclass.c | 151 +--------
> drivers/fwu-mdata/gpt_blk.c | 175 +++--------
> include/fwu.h | 198 ++----------
> lib/fwu_updates/fwu.c | 296 ++++++++----------
> test/dm/fwu_mdata.c | 22 +-
> 7 files changed, 299 insertions(+), 665 deletions(-)
Tested the changes on the STM32MP1 DK2 board.
Tested-by: Sughosh Ganu <sughosh.ganu at linaro.org>
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