RTEMS small memory target patch

[Jeff Johnston]

Patch checked in.

-- Jeff J.

Joel Sherrill wrote:
> Hi,
> 
> This patch is RTEMS specific and needed so we can build
> all AVR and H8300 multilib variants of RTEMS.
> --joel
> 
> 2006-08-27  Joel Sherrill <joel.sherrill@OARcorp.com>
> 
>        * libc/sys/rtems/machine/sys/param.h: Conditionalize definition of
>        BLKDEV_IOSIZE and MAXPHYS so it will fit into small memory targets.
>        This is needed to build all AVR and H8300 RTEMS multilib variants.
> 
> 
> 
> ------------------------------------------------------------------------
> 
> 2006-08-27  Joel Sherrill <joel.sherrill@OARcorp.com>
> 
> 	* libc/sys/rtems/machine/sys/param.h: Conditionalize definition of
> 	BLKDEV_IOSIZE and MAXPHYS so it will fit into small memory targets.
> 	This is needed to build all AVR and H8300 RTEMS multilib variants.
> 
> diff -urN newlib-1.14.0-orig/newlib/libc/sys/rtems/machine/param.h newlib-1.14.0/newlib/libc/sys/rtems/machine/param.h
> --- newlib-1.14.0-orig/newlib/libc/sys/rtems/machine/param.h	2006-08-11 10:51:05.000000000 -0500
> +++ newlib-1.14.0/newlib/libc/sys/rtems/machine/param.h	2006-08-21 14:41:16.000000000 -0500
> @@ -34,8 +34,13 @@
>  #define DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
>  #define DEV_BSIZE	(1<<DEV_BSHIFT)
>  
> +#if defined(__AVR__) || defined(__h8300__)
> +#define BLKDEV_IOSIZE	1024
> +#define MAXPHYS		(1 * 1024)	/* max raw I/O transfer size */
> +#else
>  #define BLKDEV_IOSIZE	2048
>  #define MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
> +#endif
>  
>  #define UPAGES	2		/* pages of u-area */
>  
>