CVS commit: [netbsd-8] src/sys/arch/zaurus

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sun Nov  3 11:38:51 UTC 2019

Modified Files:
        src/sys/arch/zaurus/conf [netbsd-8]: Makefile.zaurus.inc
        src/sys/arch/zaurus/stand/zbsdmod [netbsd-8]: Makefile compat_linux.h
            zbsdmod.c

Log Message:
Pull up following revision(s) (requested by tsutsui in ticket #1420):

        sys/arch/zaurus/stand/zbsdmod/Makefile: revision 1.12
        sys/arch/zaurus/stand/zbsdmod/zbsdmod.c: revision 1.10
        sys/arch/zaurus/conf/Makefile.zaurus.inc: revision 1.10
        sys/arch/zaurus/stand/zbsdmod/zbsdmod.c: revision 1.11
        sys/arch/zaurus/stand/zbsdmod/compat_linux.h: revision 1.7

Explicitly set empty LINKENTRY to keep ENTRY address specified in ldscript.

This fixes kernel boot failures of NetBSD/zaurus 8.x and later.
While here, also set empty TEXTADDR also specified in ldscript.

See my post in port-zaurus@ for details:
 https://mail-index.netbsd.org/port-zaurus/2019/10/22/msg000069.html

Should be pulled up to netbsd-8 and netbsd-9.

 -

Fix another boot failure issue of NetBSD/zaurus 8.x and later.

It looks some cacheline alignment restriction so that zbsdmod.o in
NetBSD/zaurus 8.x release cannot jump to a loaded kernel properly.

Adding an explicit alingment pseudo op to put all instructions
between I-cache flush and jumping to the loaded kernel into the
same cacheline solves the issue.

See my post in port-zaurus@ for details:
 https://mail-index.netbsd.org/port-zaurus/2019/10/22/msg000069.html

Should be pulled up to netbsd-8 and netbsd-9.

 -

Misc cleanup to avoid future confusion.
- Remove more unnecessary debug sections
- Use DBG instead of COPTS to specify -Os as defined in bsd.prog.mk
- Use CFLAGS and CPPFLAGS correctly
- Explicitly set -ffreestanding

 -

Make sure to clear bss before jumping to a kernel copied from load buffer.
This will fix yet another boot failure issue
"screen white-out after loading a kernel"
 https://mail-index.netbsd.org/port-zaurus/2019/10/26/msg000072.html

Should be pulled up to netbsd-8 and netbsd-9.


To generate a diff of this commit:
cvs rdiff -u -r1.9 -r1.9.10.1 src/sys/arch/zaurus/conf/Makefile.zaurus.inc
cvs rdiff -u -r1.10 -r1.10.10.1 src/sys/arch/zaurus/stand/zbsdmod/Makefile
cvs rdiff -u -r1.6 -r1.6.40.1 \
    src/sys/arch/zaurus/stand/zbsdmod/compat_linux.h
cvs rdiff -u -r1.9 -r1.9.22.1 src/sys/arch/zaurus/stand/zbsdmod/zbsdmod.c

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