From 4898679e190770ad19917dfc01bc192df0cdfdee Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 31 May 2023 00:29:14 -0500 Subject: FWU: Add FWU metadata access driver for MTD storage regions In the FWU Multi Bank Update feature, the information about the updatable images is stored as part of the metadata, on a separate region. Add a driver for reading from and writing to the metadata when the updatable images and the metadata are stored on a raw MTD region. The code is divided into core under drivers/fwu-mdata/ and some helper functions clubbed together under lib/fwu_updates/ Signed-off-by: Masami Hiramatsu Signed-off-by: Jassi Brar --- include/fwu.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'include') diff --git a/include/fwu.h b/include/fwu.h index 6affb73c4fb..ac5c5de8706 100644 --- a/include/fwu.h +++ b/include/fwu.h @@ -8,6 +8,8 @@ #include #include +#include +#include #include @@ -18,6 +20,12 @@ struct fwu_mdata_gpt_blk_priv { struct udevice *blk_dev; }; +struct fwu_mtd_image_info { + u32 start, size; + int bank_num, image_num; + char uuidbuf[UUID_STR_LEN + 1]; +}; + struct fwu_mdata_ops { /** * read_mdata() - Populate the asked FWU metadata copy @@ -251,4 +259,28 @@ u8 fwu_empty_capsule_checks_pass(void); */ int fwu_trial_state_ctr_start(void); +/** + * fwu_gen_alt_info_from_mtd() - Parse dfu_alt_info from metadata in mtd + * @buf: Buffer into which the dfu_alt_info is filled + * @len: Maximum characters that can be written in buf + * @mtd: Pointer to underlying MTD device + * + * Parse dfu_alt_info from metadata in mtd. Used for setting the env. + * + * Return: 0 if OK, -ve on error + */ +int fwu_gen_alt_info_from_mtd(char *buf, size_t len, struct mtd_info *mtd); + +/** + * fwu_mtd_get_alt_num() - Mapping of fwu_plat_get_alt_num for MTD device + * @image_guid: Image GUID for which DFU alt number needs to be retrieved + * @alt_num: Pointer to the alt_num + * @mtd_dev: Name of mtd device instance + * + * To map fwu_plat_get_alt_num onto mtd based metadata implementation. + * + * Return: 0 if OK, -ve on error + */ +int fwu_mtd_get_alt_num(efi_guid_t *image_guid, u8 *alt_num, const char *mtd_dev); + #endif /* _FWU_H_ */ -- cgit v1.2.3