CVS commit: src/sys/arch/evbarm/marvell

["Rin Okuyama" <rin%netbsd.org@localhost>]

Module Name:    src
Committed By:   rin
Date:           Fri May 20 15:04:15 UTC 2022

Modified Files:
        src/sys/arch/evbarm/marvell: marvell_start.S

Log Message:
Initial support for armv5eb on Sheeva.

Disable L2 cache for Sheeva before switch to big-endian mode.

Note that we need to encode this code sequence in little endian,
as u-boot starts kernel in little-endian mode.

XXX
At the moment, this code is unconditionally enabled if CPU_SHEEVA
option is enabled; it does not work for older CPUs.

It would be better to determine CPU type automatically as done for
little-endian variant, but it is too ugly to hand-assemble for
the opposite byte-order.

It may be nice if we have tools something like:

$ nbarm-elf-bswap -s marvell_start -e Lswitch_endian_done netbsd

Tested for OPENBLOCKS_A6 (for CPU_SHEEVA), as well as KUROBOX_PRO
(for !CPU_SHEEVA).


To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/sys/arch/evbarm/marvell/marvell_start.S

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.