ppcv_cpuinfo_700.c

qnx powerpc MPC8245的 BSP源文件

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $ 
 */

#include "startup.h"

void
ppcv_cpuinfo_700(struct cpuinfo_entry *cpu) {
	struct callout_rtn	*icache;
	struct callout_rtn	*dcache;
	unsigned			lsize;

    //Callouts don't want to turn off data translation to get at
    //their devices.
    lsp.cpu.ppc_kerinfo.p->callout_ts_clear &= ~PPC_MSR_DS;

	cpu->flags = (CPU_FLAG_MMU|CPU_FLAG_FPU) | ppcv->cpu_flags;
	if(!save_EAR) cpu->flags &= ~PPC_CPU_EAR;

	if(lsp.syspage.p->num_cpu > 1) {
		//Have to use different cache routine if SMP, see
		//callout_cache_ppc700smp.s in the library for reasons.
		dcache = &cache_dppc_700smp;
		icache = &cache_ippc_700smp;
	} else {
		dcache = &cache_dppc;
		icache = &cache_ippc;
	}

	lsize = 1 << ppcv->cache_lsize;

	cpu->data_cache = add_cache(system_dcache_idx,
						CACHE_FLAG_DATA | CACHE_FLAG_WRITEBACK | CACHE_FLAG_SNOOPED,
						lsize,
						ppcv->dcache_lines,
						dcache);

	cpu->ins_cache = add_cache(system_icache_idx,
						CACHE_FLAG_INSTR | CACHE_FLAG_NONCOHERENT,
						lsize,
						ppcv->icache_lines,
						icache);
}