Re: Little Endian

[Manish Lachwani <mlachwani@mvista.com>]

ellis@spinics.net wrote:

>I'm just starting to look at a porting project. The board I'll
>be using is little endian and the CVS version of the kernel
>source doesn't have anything but big endian in the config
>menu. Does little endian work at all and if so, how do I 
>select it?
>
>--
>http://www.spinics.net/linux/
>
>  
>
When you do "make menuconfig", under "Machine Selection" item, there is 
an option called "Generate little endian code". Is this what you are 
looking for? This is a config option CONFIG_CPU_LITTLE_ENDIAN. This is 
defined in arch/mips/Kconfig:

config CPU_LITTLE_ENDIAN
        bool "Generate little endian code"
        default y if ACER_PICA_61 || CASIO_E55 || DDB5074 || DDB5476 || 
DDB5477 || MACH_DECSTATION
|| IBM_WORKPAD || LASAT || MIPS_COBALT || MIPS_ITE8172 || MIPS_IVR || 
SOC_AU1X00 || NEC_OSPREY || OLIVETTI_M700 || SNI_RM200_PCI || 
VICTOR_MPC30X || ZAO_CAPCELLA
        default n if MIPS_EV64120 || MIPS_EV96100 || MOMENCO_OCELOT || 
MOMENCO_OCELOT_G || SGI_IP22 || SGI_IP27 || SGI_IP32 || TOSHIBA_JMR3927
        help
          Some MIPS machines can be configured for either little or big 
endian
          byte order. These modes require different kernels. Say Y if your
          machine is little endian, N if it's a big endian machine.
                                                                                                   

Thanks
Manish Lachwani