1. All Makefiles that use ARM_APCS_FLAGS add -marm unconditionally and
bsd.own.mk also adds it for gcc only (so we end up with 2 -marm for gcc).
Just add -marm unconditionally in bsd.own.mk in ARM_APCS_FLAGS and remove
it from everywhere else.
2. gcc-8 now warns about thumb internetwork in APCS mode. This does not make
sense because the documentation says that this flag does not make a
difference in apcs mode, but might produce larger code in non-APCS mode.
So we just add it to silence the warnings.

branches: 1.15.14;
Get rid of more -mno-thumb -mno-thumb-interwork for GCC < 4.8

branches: 1.14.4; 1.14.8; 1.14.12;
Override CPUFLAGS for compiler cpu-specific options, instead of appening
to CFLAGS. This allows the user to define CPUFLAGS without breaking the
build.

branches: 1.13.2;
Add empty LIBCRTI= as LIBCRT0 to build sa programs without installed DESTDIR.

XXX: probabry we should have bsd.saprog.mk or something.

Move flags for ARM's APCS ABI into a common variable. Add some forces to
deal with limitations in the Clang <-> LLVM backend interaction to pick
the correct ABI and target assembler.

Use -marm for clang builds, too.

explicitly add -marm

-mno-thumb-interwork is the default, and there is no -mthumb in gcc 4.8

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

Add CPPFLAGS+= -mno-thumb -mno-thumb-interwork

branches: 1.6.2;
Add -fno-unwind-tables

branches: 1.5.4;
Contribution from Petri Laakso:
- Support for passing kernel arguments.
- entropy_init() removed as OLINUXINO doesn't generate entropy bits without
user interaction.
- FIFO contents are flushed when DEBUG is enabled.

gcc will supply -Wa,-eabi=gnu so don't include. Use -mabi=apcs-base, not atpcs

Add a ${MKTARGET_LINK}

Make sure these are always compiled with -mabi=atpcs -mfloat-abi=soft
-Wa,-meabi=gnu so they use the old compilation methods.

branches: 1.1.2;
Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

use the machine link for bootconfig.h

there is no <string.h> in standalone code; should be getting strcpy from
libkern.

Include <string.h> for strcpy

branches: 1.1.4; 1.1.14; 1.1.18; 1.1.22;
Contribution from Petri Laakso:
- Support for passing kernel arguments.
- entropy_init() removed as OLINUXINO doesn't generate entropy bits without
user interaction.
- FIFO contents are flushed when DEBUG is enabled.

branches: 1.3.4;
Contribution from Petri Laakso:
- Support for passing kernel arguments.
- entropy_init() removed as OLINUXINO doesn't generate entropy bits without
user interaction.
- FIFO contents are flushed when DEBUG is enabled.

branches: 1.2.2;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.3.2; 1.3.4; 1.3.6;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Adjust bootloader file name.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

branches: 1.1.4; 1.1.6; 1.1.10;
iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.2.2; 1.2.4; 1.2.6;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.3.2; 1.3.4;
Contribution from Petri Laakso:
- Support for passing kernel arguments.
- entropy_init() removed as OLINUXINO doesn't generate entropy bits without
user interaction.
- FIFO contents are flushed when DEBUG is enabled.

branches: 1.2.2;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.3.2; 1.3.4;
Contribution from Petri Laakso:
- Support for passing kernel arguments.
- entropy_init() removed as OLINUXINO doesn't generate entropy bits without
user interaction.
- FIFO contents are flushed when DEBUG is enabled.

branches: 1.2.2;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.2.2; 1.2.4; 1.2.6;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.3.2; 1.3.4;
Contribution from Petri Laakso:
Enable debug UART input
Fixes issue with some OLinuXino boards which were not able to
accept input from the user.

branches: 1.2.2;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.

Spelling in comment

branches: 1.4.6;
iMX233/OLinuXino changes from Petri Laskso.
See http://mail-index.netbsd.org/port-arm/2013/10/07/msg002042.html

branches: 1.3.2; 1.3.4; 1.3.6;
Contribution from Petri Laakso.
Refactoring of bootimx23:
- Code style clean up.
- Don't do DCDC initialization in bootimx23. This has proven to be
unreliable. DCDC initialization will be done in kernel later.
Use linear regulators while booting to make bootimx23 reliable.

Give memory more time to power up. Avoids hangups.

Add initial support for Olimex iMX233 based OLinuXino boards.
https://www.olimex.com/Products/OLinuXino/iMX233/
Contributed by Petri Laakso.