When update version,this commit erase normal hibernate image
and fastresume image.Before this,only fastresume image is erased.
This may caused issue when hibernate image saved before
update version.
Update one of uboot/kernel/rootfs will clean hibernate image.
Signed-off-by: xianbing Zhu <xianbing.zhu@linux.alibaba.com>
Change-Id: I92cd9ccda83f8d1e215e0f8d75e7cf34380a6201
The data cache invalidation function for c9xx CPUs uses `dcache.cipa`
instruction. According to T-Head extension specification[1] section
3.1.5, this instruction also performs a cache clean along with the
invalidation.
On top of being incorrect, this leads to a serious issue on the
designware ethernet driver, where stalled cache may get flushed each
time we handle a new received packet[2]. As a result, received packet
are randomly corrupted with old cached data. This can easily be
reproduced by sending an ARP request to the device during a TFTP
transfer. The last TFTP block is treated as the ARP reply we just sent,
which makes U-Boot hang on the block.
Always use `dcache.ipa` instruction to invalidate dcache. Replace
existing usages of `dcache.ipa` with our implementation.
Note that this fix is slightly intrusive as it changes the cache
invalidation behavior in all drivers. However, I have not noticed any
side-effect during my tests.
[1] https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.3.0/xthead-2023-11-10-2.3.0.pdf
[2] 918a8c89e0/drivers/net/designware.c (L475)
