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fwu: move meta-data management in core

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Instead of each i/f having to implement their own meta-data verification
and storage, move the logic in common code. This simplifies the i/f code
much simpler and compact.

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Tested-by: Sughosh Ganu <sughosh.ganu@linaro.org>
This commit is contained in:
Jassi Brar
2023-03-06 17:18:28 -06:00
committed by Tom Rini
parent b042c70554
commit 167994f295
3 changed files with 202 additions and 6 deletions
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41
include/fwu.h
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@@ -24,6 +24,26 @@ struct fwu_mdata_gpt_blk_priv {
* @update_mdata() - Update the FWU metadata copy
*/
struct fwu_mdata_ops {
/**
* read_mdata() - Populate the asked FWU metadata copy
* @dev: FWU metadata device
* @mdata: Output FWU mdata read
* @primary: If primary or secondary copy of metadata is to be read
*
* Return: 0 if OK, -ve on error
*/
int (*read_mdata)(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
/**
* write_mdata() - Write the given FWU metadata copy
* @dev: FWU metadata device
* @mdata: Copy of the FWU metadata to write
* @primary: If primary or secondary copy of metadata is to be written
*
* Return: 0 if OK, -ve on error
*/
int (*write_mdata)(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
/**
* check_mdata() - Check if the FWU metadata is valid
* @dev: FWU device
@@ -126,6 +146,27 @@ struct fwu_mdata_ops {
EFI_GUID(0x0c996046, 0xbcc0, 0x4d04, 0x85, 0xec, \
0xe1, 0xfc, 0xed, 0xf1, 0xc6, 0xf8)
/**
* fwu_read_mdata() - Wrapper around fwu_mdata_ops.read_mdata()
*/
int fwu_read_mdata(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
/**
* fwu_write_mdata() - Wrapper around fwu_mdata_ops.write_mdata()
*/
int fwu_write_mdata(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
/**
* fwu_get_verified_mdata() - Read, verify and return the FWU metadata
*
* Read both the metadata copies from the storage media, verify their checksum,
* and ascertain that both copies match. If one of the copies has gone bad,
* restore it from the good copy.
*
* Return: 0 if OK, -ve on error
*/
int fwu_get_verified_mdata(struct fwu_mdata *mdata);
/**
* fwu_check_mdata_validity() - Check for validity of the FWU metadata copies
*