From 4a238002e71ec018723229f8669363a5ffb7302e Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 18 Nov 1999 21:22:58 +0000 Subject: Patch from "John M. Mills" with subsequent cleanup from Ralf Corsepius that adds initial Hitachi SH-2 support to RTEMS. Ralf's comments are: Changes: ------ 1. SH-Port: * Many files renamed. * CONSOLE_DEVNAME and MHZ defines removed from libcpu. * console.c moved to libbsp/sh/shared, build in libbsp/sh//console applying VPATH. * CONSOLE_DEVNAME made BSP-specific, replacement is defined in bsp.h * MHZ define replaced with HZ (extendent resolution) in custom/*.cfg * -DHZ=HZ used in bspstart.c, only * Makefile variable HZ used in bsp-dependent directories only. 2. SH1-Port * clock-driver rewritten to provide better resolution for odd CPU frequencies. This driver is only partially tested on hardware, ie. sightly experimental, but I don't expect severe problems with it. * Polling SCI-driver added. This driver is experimental and completly untested yet. Therefore it is not yet used for the console (/dev/console is still pointing to /dev/null, cf. gensh1/bsp.h). * minor changes to the timer driver * SH1 specific delay()/CPU_delay() now is implemented as a function 3. SH2-Port * Merged * IMO, the code is still in its infancy. Therefore I have interspersed comments (FIXME) it for items which I think John should look after. * sci and console drivers partially rewritten and extended (John, I hope you don't mind). * Copyright notices are not yet adapted --- c/src/lib/libcpu/sh/sh7045/null/write.c | 44 +++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 c/src/lib/libcpu/sh/sh7045/null/write.c (limited to 'c/src/lib/libcpu/sh/sh7045/null/write.c') diff --git a/c/src/lib/libcpu/sh/sh7045/null/write.c b/c/src/lib/libcpu/sh/sh7045/null/write.c new file mode 100644 index 0000000000..d9c4da434b --- /dev/null +++ b/c/src/lib/libcpu/sh/sh7045/null/write.c @@ -0,0 +1,44 @@ +/* null_write + * + * This routine is the null device driver write routine. + * + * Derived from rtems' stub driver. + * + * Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de) + * + * Input parameters: + * major - device major number + * minor - device minor number + * pargp - pointer to write parameter block + * + * Output parameters: + * rval - NULL_SUCCESSFUL + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include +#include + +#include + +rtems_device_driver null_write( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *pargp +) +{ + rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) pargp ; + + rw_args->bytes_moved = rw_args->count ; + + return NULL_SUCCESSFUL; +} -- cgit v1.2.3