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RTEMS small memory target patch


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 */
 


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