ppcv_chip_750fx.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"
#include "hidpll.h"


// ppcv_cpuconfig2_750fx & ppcv_setup_750fx routines just needed to
// work around a chip bug. Can get rid of them later....

static void
ppcv_cpuconfig2_750fx(int cpu) {
	unsigned	hid;

	// clear extended BATs on 750FX
	set_spr(PPC_SPR_IBAT4U, 0);
	set_spr(PPC_SPR_IBAT5U, 0);
	set_spr(PPC_SPR_IBAT6U, 0);
	set_spr(PPC_SPR_IBAT7U, 0);

	set_spr(PPC_SPR_DBAT4U, 0);
	set_spr(PPC_SPR_DBAT5U, 0);
	set_spr(PPC_SPR_DBAT6U, 0);
	set_spr(PPC_SPR_DBAT7U, 0);

	ppcv_cpuconfig2_700(cpu);
	hid_pll_bits = hid_pll_bits_750fx;

	// turn off DPM for DD2.0 750FX errata; OK on 2.1 and above
	hid = get_spr(PPC603_SPR_HID0);
	hid &= ~(PPC700_SPR_HID0_DPM | PPC700_SPR_HID0_EICE);
	set_spr(PPC603_SPR_HID0, hid);
}

static void
ppcv_setup_750fx(void) {


	ppcv_setup_700();

	ppcv_config.cpuconfig2 = &ppcv_cpuconfig2_750fx;

}

const struct ppcv_chip ppcv_chip_750fx = {
	PPC_750FX,
	32, 5, 1024, 1024,
	PPC_CPU_EAR | PPC_CPU_SW_TLBSYNC | PPC_CPU_HW_HT | PPC_CPU_HW_POW | PPC_CPU_DCBZ_NONCOHERENT,
	0x00082200,
	"750fx",
	&ppcv_setup_750fx
};