MFC r332674:
Increase the msdosfs partition size on arm SoC images where the
current size may not be sufficiently large for development and/or
testing.

PR: 227548
Sponsored by: The FreeBSD Foundation

MFC r331562 (manu):
release: arm: Copy boot.scr from ports

Latest u-boot update need u-boot script to load and start ubldr.
(See D14230 for more details)
Copy this file for our arm release on the fat partition.

MFC r325373, r325861:
r325373 (manu):
release/arm: Do not install ubldr

r325861 (manu):
release: Update u-boot and firmware file for RPI-B target.

Sponsored by: The FreeBSD Foundation

MFC r325950, r325953:
r325950:
Sort variables for consistency.

r325953:
Add general configuration files used by release/release.sh for
big-iron installation images.

Sponsored by: The FreeBSD Foundation

MFC r320252, r320686, r325769:
r320252:
In release/release.sh:
- Rename chroot_arm_armv6_build_release() to chroot_arm_build_release()
and make it hardware agnostic (such as armv6 -vs- armv7 -vs- arm64).
- Evaluate EMBEDDED_TARGET differently so release/tools/arm.subr can
be used for arm/armv6 and arm64/aarch64.
- Update comments and copyright.

In release/tools/arm.subr:
- In arm_create_disk(), change the default alignment from 63 to 512k,
fixing a boot issue on arm64 and EFI. [1]
- Update comments and copyright.

r320686:
Fix the ftp-stage target by loosening the constraints on the TARGET
and TARGET_ARCH variables.

r325769:
Update the GUMSTIX image build to use arm/arm TARGET/TARGET_ARCH.
Update the TARGET/TARGET_ARCH matching in release/release.sh and
release/Makefile.mirrors for simplification.

Note: The RPI3.conf addition from r320252 is not included, as it is
not supported on 10-STABLE. Additionally, arm64/aarch64 changes are
also excluded from this commit.

Sponsored by: The FreeBSD Foundation

Increase the IMX (CUBOX-HUMMINGBOARD, WANDBOARD) image size to
successfully build.

While here, add the SRCBRANCH to the CUBOX-HUMMINGBOARD.conf and
GUMSTIX.conf.

This is a direct commit to stable/10, as the images for stable/11
are already larger than this.

Sponsored by: The FreeBSD Foundation

MFC r288374:
In addition to the ubldr file, also copy ubldr.bin to the
MS-DOS partition. This will help with transitioning to
a single arm/armv6 userland build which could be used for
all FreeBSD/armv6 images without UBLDR_LOADADDR being set
for each board (ultimately requiring a separate buildworld
for each currently).

Sponsored by: The FreeBSD Foundation

MFC r284333:
Reduce the arm/armv6 image size from 1G to 480M.

Since the images are effectively mostly zeros at 1G,
reduce the size to allow installation on smaller SD
cards, such as 512Mb.

While here, stop writing the /boot.txt file on the
WANDBOARD, which isn't used anyway.

Sponsored by: The FreeBSD Foundation

MFC r283920, r283991, r283992, r284102:

r283920:
Add a configuration file to support the Cubox/Hummingboard SoC.

r283991:
Add initial support for building images for the Duovero Gumstix
board.

r283992:
Fix a whitespace nit.

r284102:
Set the correct UBLDR_LOADADDR for the Wandboard and
Cubox/Hummingboard images.

Sponsored by: The FreeBSD Foundation

MFC r288374:
In addition to the ubldr file, also copy ubldr.bin to the
MS-DOS partition. This will help with transitioning to
a single arm/armv6 userland build which could be used for
all FreeBSD/armv6 images without UBLDR_LOADADDR being set
for each board (ultimately requiring a separate buildworld
for each currently).

Sponsored by: The FreeBSD Foundation

MFC r284333:
Reduce the arm/armv6 image size from 1G to 480M.

Since the images are effectively mostly zeros at 1G,
reduce the size to allow installation on smaller SD
cards, such as 512Mb.

While here, stop writing the /boot.txt file on the
WANDBOARD, which isn't used anyway.

Sponsored by: The FreeBSD Foundation

MFC r283920, r283991, r283992, r284102:

r283920:
Add a configuration file to support the Cubox/Hummingboard SoC.

r283991:
Add initial support for building images for the Duovero Gumstix
board.

r283992:
Fix a whitespace nit.

r284102:
Set the correct UBLDR_LOADADDR for the Wandboard and
Cubox/Hummingboard images.

Sponsored by: The FreeBSD Foundation