Options -- Configuring the MIPS32 Variant HAL Package
Description
The MIPS32 variant HAL is included in all
ecos.db entries for MIPS32-based targets, so
the package will be loaded automatically when creating a
configuration. It should never be necessary to load the package
explicitly or to unload it.
The MIPS32 variant HAL contains a number of configuration
points. Few of these should be altered by the user, they are
mainly present for the platform HAL to select different
features.
CYGHWR_HAL_MIPS_MIPS32_CORE
This defines the CPU core on the target hardware. It is usually
set by the platform HAL and may change the configuration of
this HAL and of any changes it makes to the architecture HAL.
CYGHWR_HAL_MIPS_MIPS32_ENDIAN
The MIPS32 core can use either a big or little endian mode.
Platforms with a fixed endianness should set this
to Little or Big as
appropriate. Bi-endian platforms may allow this to be set by
the user, or implicitly by supplying a platform configuration
option to control endianness.
Compiler Flags
It is normally the responsibility of the platform HAL to define
the default compiler and linker flags for all packages, although
it is possible to override these on a per-package basis. Most of
the flags used are the same as for other architectures supported
by eCos. The endianness flags, -EL
and -EB are controlled here by
the CYGHWR_HAL_MIPS_MIPS32_ENDIAN option. The
selection of the instruction set for eCos: MIPS32 or microMIPS, is
also selected here based on various architecture options.