u-boot.git/include/linux/math64.h, branch v2026.07

compat: math64: add abs_diff()

2026-04-21T17:19:49Z

Add the abs_diff() macro, copied directly from Linux 6.18. Signed-off-by: Casey Connolly

lib: div64: Add support for round up of div64_u64

2022-03-09T11:34:47Z

Most of the frequencies are not rounded up to a proper number. When we need to devide these frequencies to get a number for example frequency in Mhz, we see it as one less than the actual intended value. Ex: If we want to get Mhz from frequency 199999994hz, we will calculate it using div64_u64(199999994, 1000000) and we will get 199Mhz in place of 200Mhz. Add a macro DIV64_U64_ROUND_UP for rounding up div64_u64. This is taken from linux 'commit 68600f623d69("mm: don't miss the last page because of round-off error")'. Signed-off-by: Ashok Reddy Soma Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/f9fdcba76cd692ae436b1d7883b490e3dc207231.1645626962.git.michal.simek@xilinx.com

lib: div64: sync with Linux

2017-04-13T13:41:10Z

Sync with Linux commit ad0376eb1483b ("Merge tag 'edac_for_4.11_2'"). Signed-off-by: Peng Fan Cc: Tom Rini

UBIFS: Implement read-only UBIFS support in U-Boot

2009-03-20T21:39:15Z

The U-Boot UBIFS implementation is largely a direct copy from the current Linux version (2.6.29-rc6). As already done in the UBI version we have an "abstraction layer" to redefine or remove some OS calls (e.g. mutex_lock() ...). This makes it possible to use the original Linux code with very little changes. And by this we can better update to later Linux versions. I removed some of the Linux features that are not used in the U-Boot version (e.g. garbage-collection, write support). Signed-off-by: Stefan Roese CC: Artem Bityutskiy CC: Adrian Hunter