BSP Developer's Guide

VxWorks 5.5
BSP Developer’s Guide
B.2.4 ColdFire
In addition to the steps described in B.2.1 Migration Changes Common to All
Architectures, p.214, the following ColdFire-specific issues should be considered
when migrating your custom BSP:
■
Diab support. This release of VxWorks for ColdFire includes the same basic
layout and functionality included with the previous Tornado 2.1/VxWorks 5.4
release. However, the GNU toolchain is no longer supported.
For more information on using VxWorks with ColdFire targets, see the VxWorks for
ColdFire Architecture Supplement.
B.2.5 MIPS
NOTE: This section describes BSP migration from Tornado 2.1\VxWorks 5.4 to
Tornado 2.2\VxWorks 5.5. For information on migrating a BSP from Tornado 2.0.x
to Tornado 2.1, see the Tornado for MIPS Release Notes and Architecture Supplement
manual available on WindSurf.
In addition to the steps described in B.2.1 Migration Changes Common to All
Architectures, p.214, the following MIPS-specific issues should be considered when
migrating your custom BSP to Tornado 2.2/VxWorks 5.5:
■
CPU variants. MIPS CPUs are now organized by CPU variant. This allows the
VxWorks kernel to take advantage of the specific architecture characteristics of
one variant without negatively impacting another. As a result, all MIPS BSPs
must now include a CPU_VARIANT line in the Makefile after the
MACH_EXTRA line. For example, CPUs which fall into the category of Vr54xx
variants, use the following line:
CPU_VARIANT
=_vr54xx
■
■
See the VxWorks for MIPS Architecture Supplement for a list of MIPS CPUs and
their respective CPU_VARIANT values.
MIPS64 Libraries. The MIPS64 libraries (MIPS64gnu, MIPS64diab,
MIPS64gnule, and MIPS64diable) now support 64-bit MIPS devices with ISA
Level III and above. In previous versions of VxWorks, these libraries only
supported MIPS devices with ISA Level IV and above. For more information
on compiler options for MIPS libraries, refer to the Architecture Supplement.
Alchemy Semiconductor BSPs. The Alchemy Semiconductor BSP, pb1000, has
been altered to provide additional support to the pb1500 BSP. As a result, some
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