CVS commit: src/sys

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

Module Name:    src
Committed By:   rin
Date:           Mon Oct 19 01:12:14 UTC 2020

Modified Files:
        src/sys/arch/arm/fdt: arm_simplefb.c
        src/sys/arch/evbarm/fdt: fdt_machdep.c
        src/sys/dev/fdt: simplefb.c

Log Message:
Fix colors of 32-bpp raster console for evbarm/aarch64eb and armeb.

Most boards are configured to little-endian in initial, and switched
to big-endian after kernel is loaded. In this case, framebuffer seems
byte-swapped to CPU.

It is best to reconfigure framebuffer (as done recently for sunxi_mixer
by jmcneill), but in most cases, HW is incapable, or we just don't know
register bits to configure them.

Therefore, override "format" FDT property for "simple-framebuffer" to
let drivers know byte-order for 32-bpp framebuffer.

Then, make fdt/simplefb (genfb) and arm_simplefb (early console) detect
byte-swapped FB, and configure genfb(4) or rasops(4) layers accordingly.

Tested on Pine A64+ (arm_simplefb) and Cubietruck (both fdt/simplefb and
arm_simplefb).

Discussed with jmcneill. Thanks!!


To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/arch/arm/fdt/arm_simplefb.c
cvs rdiff -u -r1.75 -r1.76 src/sys/arch/evbarm/fdt/fdt_machdep.c
cvs rdiff -u -r1.8 -r1.9 src/sys/dev/fdt/simplefb.c

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