This removes the headers imported from the embeddedsw repository in
favor of a much thinner shim. This also removes the complicated build
system configuration necessary to support use of these headers. The
primary reason for removal is that certain external Xilinx libraries
also require use of these headers and this causes version mismatches and
header conflicts that can be avoided.
Add an opportunistic page cache to the xnandpsu driver since it does not
implement partial page reads and common filesystem access patterns
perform multiple reads from the same page. This has been seen to provide
a 10x speedup to read speeds and a 2x speedup on first initialization
when used with JFFS2.
Expose functions to directly manipulate the bad block table (BBT). These
functions are necessary to correct possible BBT corruption caused by
bugs in the BBT management layer.
This adds Xilinx's driver for the Xilinx NAND controller embedded in the
ZynqMP SoC. Within that device alone, it is possible to access this
peripheral from MicroBlaze, ARMv7, and ARMv8 cores. This has been added
to the hardware ZynqMP BSPs since QEMU does not support emulation of
this peripheral. This driver supports polled operation only. The
imported files are and should be able to remain unmodified. Import
information is kept in bsps/shared/dev/nand/VERSION.
