avb: modify the function read_from_partition and write_to_partition

There is no need to malloc a space if offset
and num_bytes is multiple of 512 in function
read_from_partition.

The blk_dwrite in

avb: modify the function read_from_partition and write_to_partition

There is no need to malloc a space if offset
and num_bytes is multiple of 512 in function
read_from_partition.

The blk_dwrite in write_to_partition do not
return 1 if execute success. So do not need
to judge the return value.

Change-Id: Icd5681815640e86166d05ab3fc74f95d669621c7
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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avb: provide read/write vboot state function for fastboot

Change-Id: I197868d00a24719ce504a25fb81dc1577d2a214e
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

avb: provide read-write flash_lock_state functions for fastboot

Change-Id: Id6135c58416b0b914d2de8b5d911bf9eb02c5c60
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

avb: provide some functions used by fastboot

In the avb process, the pub_key must be verified
by some permanent attributes.The permanent attributes
is written by fastboot. So the write_permanent_att

avb: provide some functions used by fastboot

In the avb process, the pub_key must be verified
by some permanent attributes.The permanent attributes
is written by fastboot. So the write_permanent_attributes
function is provided to write permanent attributes.
the read_permanent_attributes functions is provided to
verified the data.

Change-Id: Ib448c31062e34ce7f15fc32ab141793755bacf8a
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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avb: add avb config to spl and tpl

Change-Id: Idc5102e29c4b66acacda554f3c61903606314025
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

libavb_user: add config depended on tipc

In the avb_ops_user.c file, we use some
functions provided by tipc, so excute the
functions may depend on tipc. If the config
is not enable, it may compile f

libavb_user: add config depended on tipc

In the avb_ops_user.c file, we use some
functions provided by tipc, so excute the
functions may depend on tipc. If the config
is not enable, it may compile fail.

Change-Id: I323f7e8d675407f2ec2f9f5358d1696b3b118880
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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avb: create avb function for user use

The libavb_user provide some fuctions to get
a/b and avb information from misc or vbmeta
partitions, which can be use in libavb...

It also can use to enable or

avb: create avb function for user use

The libavb_user provide some fuctions to get
a/b and avb information from misc or vbmeta
partitions, which can be use in libavb...

It also can use to enable or disable the verification
function by using avb_user_verity_set in the file
avb_user_verify.c.

Since we use fastboot to program our firmware,
some necessary function is provided to fastboot
to get useful information, like slot number, current
slot and so on.

Some functions in the avb_ops_user.c, like read_rollback_index,
depend on the OpteeClientTest.h.

Change-Id: I94f77db30d5c7896724b5da3d218041ebdc1f46a
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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avb: support vbmeta key_pub verify

Android Things requires specific public key
metadata and verification logic to correctly
verify vbmeta public keys.

This commit provide fuction avb_atx_validate_v

avb: support vbmeta key_pub verify

Android Things requires specific public key
metadata and verification logic to correctly
verify vbmeta public keys.

This commit provide fuction avb_atx_validate_vbmeta_public_key
to verify the vbmeta.

Change-Id: I227e93b342671b4395cbaa7dea2121cbf0d7234b
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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avb: add functions to choose a/b system

This commit is based on google avb, and it
can be getted by https://android.googlesource.com/platform/external/avb.

This new rk_libavb_ab depend on rk_libavb

avb: add functions to choose a/b system

This commit is based on google avb, and it
can be getted by https://android.googlesource.com/platform/external/avb.

This new rk_libavb_ab depend on rk_libavb.

This commit provide some useful functions.
The function of avb_ab_flow can be use to
chose a/b system and flow.The other functions
can be used to debug.

Change-Id: I768272286898b36e9a64749ff30bc6ff0cb019a1
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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avb: add the google avb to lib

The avb lib is provided by google, and it must be
used in the android things to boot and verify
android system. It can be getted in
https://android.googlesource.com/pl

avb: add the google avb to lib

The avb lib is provided by google, and it must be
used in the android things to boot and verify
android system. It can be getted in
https://android.googlesource.com/platform/external/avb.

Then we can use the functions suported by avb to program
the a/b and avb code.

Change-Id: I09371fe53cd50233a69533cfa09d5ebca5b10871
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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