u-boot/lib/libfdt
Tom Rini e8c2d25845 libfdt: Revert 6dcb8ba4 from upstream libfdt
In upstream libfdt, 6dcb8ba4 "libfdt: Add helpers for accessing
unaligned words" introduced changes to support unaligned reads for ARM
platforms and 11738cf01f15 "libfdt: Don't use memcpy to handle unaligned
reads on ARM" improved the performance of these helpers.

In practice however, this only occurs when the user has forced the
device tree to be placed in memory in a non-aligned way, which in turn
violates both our rules and the Linux Kernel rules for how things must
reside in memory to function.

This "in practice" part is important as handling these other cases adds
visible (1 second or more) delay to boot in what would be considered the
fast path of the code.

Cc: Patrice CHOTARD <patrice.chotard@st.com>
Cc: Patrick DELAUNAY <patrick.delaunay@st.com>
Link: https://www.spinics.net/lists/devicetree-compiler/msg02972.html
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Patrice Chotard <patrice.chotard@st.com>
2020-01-30 13:30:35 -05:00
..
fdt.c lib: libfdt: wrap scripts/dtc/libfdt/* where possible 2017-11-17 07:44:13 -05:00
fdt_addresses.c lib: libfdt: wrap scripts/dtc/libfdt/* where possible 2017-11-17 07:44:13 -05:00
fdt_empty_tree.c lib: libfdt: wrap scripts/dtc/libfdt/* where possible 2017-11-17 07:44:13 -05:00
fdt_overlay.c lib: libfdt: wrap scripts/dtc/libfdt/* where possible 2017-11-17 07:44:13 -05:00
fdt_region.c fdt_region: Ensure that depth never goes below -1 2018-11-16 16:52:01 -05:00
fdt_ro.c libfdt: Revert 6dcb8ba4 from upstream libfdt 2020-01-30 13:30:35 -05:00
fdt_rw.c libfdt: migrate fdt_rw.c to a wrapper of scripts/dtc/libfdt/fdt_rw.c 2018-01-28 12:27:30 -05:00
fdt_strerror.c lib: libfdt: wrap scripts/dtc/libfdt/* where possible 2017-11-17 07:44:13 -05:00
fdt_sw.c lib: libfdt: wrap scripts/dtc/libfdt/* where possible 2017-11-17 07:44:13 -05:00
fdt_wip.c libfdt: migrate fdt_wip.c to a wrapper of scripts/dtc/libfdt/fdt_wip.c 2017-12-04 09:59:02 -05:00
libfdt_internal.h libfdt: change libfdt_internal.h to a wrapper of scripts/dtc/libfdt/* 2017-11-17 07:44:13 -05:00
Makefile fdt: Add Kconfig options to control code size 2019-11-04 18:15:32 -07:00
README lib/libfdt/: General aesthetic/style fixes. 2016-06-19 17:05:55 -06:00
test_libfdt.py dm: Add a more efficient libfdt library 2016-07-14 20:40:24 -06:00

The libfdt functionality was written by David Gibson.  The original
source came from the Git repository:

URL:		git://ozlabs.org/home/dgibson/git/libfdt.git

author		David Gibson <dgibson@sneetch.(none)>
		Fri, 23 Mar 2007 04:16:54 +0000 (15:16 +1100)
committer	David Gibson <dgibson@sneetch.(none)>
		Fri, 23 Mar 2007 04:16:54 +0000 (15:16 +1100)
commit		857f54e79f74429af20c2b5ecc00ee98af6a3b8b
tree		2f648f0f88225a51ded452968d28b4402df8ade0
parent		07a12a08005f3b5cd9337900a6551e450c07b515

To adapt for U-Boot usage, only the applicable files were copied and
imported into the U-Boot Git repository.

Omitted:

  * GPL - U-Boot comes with a copy of the GPL license
  * test subdirectory - not directly useful for U-Boot

After importing, other customizations were performed.  See the
"git log" for details.

Jerry Van Baren