source: rtems/c/src/lib/libcpu/powerpc/mpc8xx/cpm/cp.c @ 8ef3818

4.104.114.84.95
Last change on this file since 8ef3818 was 8ef3818, checked in by Joel Sherrill <joel.sherrill@…>, on 06/12/00 at 19:57:02

Patch from John Cotton <john.cotton@…>, Charles-Antoine Gauthier
<charles.gauthier@…>, and Darlene A. Stewart
<Darlene.Stewart@…> to add support for a number of very
significant things:

+ BSPs for many variations on the Motorola MBX8xx board series
+ Cache Manager including initial support for m68040

and PowerPC

+ Rework of mpc8xx libcpu code so all mpc8xx CPUs now use

same code base.

+ Rework of eth_comm BSP to utiltize above.

John reports this works on the 821 and 860
  • Property mode set to 100644
File size: 732 bytes
Line 
1/*
2 * cp.c
3 *
4 * MPC8xx CPM RISC Communication Processor routines.
5 *
6 * Based on code (alloc860.c in eth_comm port) by
7 * Jay Monkman (jmonkman@frasca.com),
8 * which, in turn, is based on code by
9 * W. Eric Norum (eric@skatter.usask.ca).
10 *
11 * Modifications by Darlene Stewart (Darlene.Stewart@iit.nrc.ca):
12 * Copyright (c) 1999, National Research Council of Canada
13 */
14
15#include <bsp.h>
16#include <rtems/rtems/intr.h>
17#include <rtems/error.h>
18
19/*
20 * Send a command to the CPM RISC processer
21 */
22void m8xx_cp_execute_cmd( unsigned16 command )
23{
24  rtems_unsigned16 lvl;
25 
26  rtems_interrupt_disable(lvl);
27  while (m8xx.cpcr & M8xx_CR_FLG) {
28    continue;
29  }
30
31  m8xx.cpcr = command | M8xx_CR_FLG;
32  rtems_interrupt_enable (lvl);
33}
34
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