fastboot: add virtual A/B feature support

Add "fasboot getvar snapshot-update-status" support and
prevent erase/wipe of userdata/metadata when virtual A/B
merge status is MERGING or SNAPSHOTTED (+so

fastboot: add virtual A/B feature support

Add "fasboot getvar snapshot-update-status" support and
prevent erase/wipe of userdata/metadata when virtual A/B
merge status is MERGING or SNAPSHOTTED (+source slot !=
current slot).

Signed-off-by: Dayao Ji <jdy@rock-chips.com>
Change-Id: Ibb6ea5778b78b2601178f489d6efcee60d5d0a49

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Merge branch 'next-dev' into thunder-boot

fastboot: add Android-Q feature support

Add "fasboot getvar is-userspace" support.

The Android-Q document shows "not allow the flashing of dynamic partitions"
is not aimed at the physical partition

fastboot: add Android-Q feature support

Add "fasboot getvar is-userspace" support.

The Android-Q document shows "not allow the flashing of dynamic partitions"
is not aimed at the physical partition(call "super") but its child partitions
(i.e. system, vendor, oem...).

Change-Id: I4e21a9728a1093b68a9d1a08420586f33dcf0117
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

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fastboot: split cb_getvar into dedicate functions

The old implementation of cb_getvar is programed in one functions, this
make the cb_getvar huge. So separate cb_getvar in several functions.

Functi

fastboot: split cb_getvar into dedicate functions

The old implementation of cb_getvar is programed in one functions, this
make the cb_getvar huge. So separate cb_getvar in several functions.

Functions:
fb_getvar_all: Get all parameters by cmd fastboot
getvar all.
fb_getvar_single: Get one parameter by cmd fastboot
getvar xxx.
fb_read_var: Parse parameters

Change-Id: I1e795228f8129af82702f8f315cbad349ceec451
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>

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Handle slow MMC writes

Flashing a 400Mb sparse system image takes ~10 minutes. The fastboot UDP
protocol expects a response within 1 minute, so during long flash
operations, the device must send fas

Handle slow MMC writes

Flashing a 400Mb sparse system image takes ~10 minutes. The fastboot UDP
protocol expects a response within 1 minute, so during long flash
operations, the device must send fastboot "INFO" packets.

This patch does the following:
- Separate large writes into writes of size FASTBOOT_MAX_BLK_WRITE.
This parameter was tuned by hand to result in a ~10 second write.
- Keep a timer and send an INFO packet every 30 seconds.
- Adjust the sequence number in the header of the fastboot OKAY packet
to account for any INFO packets sent during flashing.
- Reduce busywaiting in the bcm2835 MMC driver. This change is based on
what the kernel does, and doesn't seem to corrupt the MMC. Without
this change, "flashall" takes 25 minutes.

Bug: 31887729
Test: "fastboot -s udp:$RPI_IP flashall" works, rpi3 boots
- Compute CRC checksum over every write to verify written data
was not corrupted.

Change-Id: Ib17ef6a85715705a8b5f722a8b7d3e5fd1a6625d

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Implement fastboot flash and erase.

Add function to respond to fastboot flash and erase. Flash writes the
previously downloaded image to indicated partition. Erase clears the
indicated partition. fb

Implement fastboot flash and erase.

Add function to respond to fastboot flash and erase. Flash writes the
previously downloaded image to indicated partition. Erase clears the
indicated partition. fb_flash and fb_erase are essentially wrappers
for fb_mmc_flash_write and fb_mmc_erase, which are implemented in
common/fb_mmc.c.

Added common/fb_common.c, where fastboot_okay/fail are implemented.
common/fb_mmc.c assumes fasboot_okay() and fastboot_fail() are
implemented, but they were tied to the fastboot USB implementation.
This refactor adds the response string as a parameter to
fastboot_okay/fail, instead of modifying a global.

Bug: 31887729
Test: FLASH:
- Create file "foo" containing 2048 chars = "-"
- Start "fastboot udp" on device and run
"fastboot -s udp:$RPI_IP flash misc foo" from host
- From U-boot console, read into memory the first 4 blocks from
misc partition, observe each byte is "-".

ERASE
- Start "fastboot udp" on device and run
"fastboot -s udp:$RPI_IP erase misc" from host
- From U-boot console, read into memory many blocks from misc
partition, observe each byte is 0x00

Configs that use fastboot USB implementation still build.

Change-Id: I5bd54868990bd9d5736d0969b3db240c2926eeec

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fastboot: sparse: resync common/image-sparse.c (part 2)

- update fastboot_okay() and fastboot_fail()

This file originally came from upstream code.

While retaining the storage abstraction feature,

fastboot: sparse: resync common/image-sparse.c (part 2)

- update fastboot_okay() and fastboot_fail()

This file originally came from upstream code.

While retaining the storage abstraction feature, this is the second
set of the changes required to resync with the
cmd_flash_mmc_sparse_img()
in the file
aboot.c
from
https://us.codeaurora.org/cgit/quic/la/kernel/lk/plain/app/aboot/aboot.c?h=LE.BR.1.2.1

Signed-off-by: Steve Rae <srae@broadcom.com>

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fastboot: Move fastboot response functions to fastboot core

The functions and a few define to generate a fastboot message to be sent
back to the host were so far duplicated among the users.

Move th

fastboot: Move fastboot response functions to fastboot core

The functions and a few define to generate a fastboot message to be sent
back to the host were so far duplicated among the users.

Move them all to a common place.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

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