arch/powerpc/cpu/mpc8xxx/srio.c

/*
 * Copyright 2011 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <config.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>

#if defined(CONFIG_FSL_CORENET)
	#define _DEVDISR_SRIO1 FSL_CORENET_DEVDISR_SRIO1
	#define _DEVDISR_SRIO2 FSL_CORENET_DEVDISR_SRIO2
	#define _DEVDISR_RMU   FSL_CORENET_DEVDISR_RMU
	#define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
#elif defined(CONFIG_MPC85xx)
	#define _DEVDISR_SRIO1 MPC85xx_DEVDISR_SRIO
	#define _DEVDISR_SRIO2 MPC85xx_DEVDISR_SRIO
	#define _DEVDISR_RMU   MPC85xx_DEVDISR_RMSG
	#define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
#elif defined(CONFIG_MPC86xx)
	#define _DEVDISR_SRIO1 MPC86xx_DEVDISR_SRIO
	#define _DEVDISR_SRIO2 MPC86xx_DEVDISR_SRIO
	#define _DEVDISR_RMU   MPC86xx_DEVDISR_RMSG
	#define CONFIG_SYS_MPC8xxx_GUTS_ADDR \
		(&((immap_t *)CONFIG_SYS_IMMR)->im_gur)
#else
#error "No defines for DEVDISR_SRIO"
#endif

void srio_init(void)
{
	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC8xxx_GUTS_ADDR;
	int srio1_used = 0, srio2_used = 0;

	if (is_serdes_configured(SRIO1)) {
		set_next_law(CONFIG_SYS_SRIO1_MEM_PHYS,
				law_size_bits(CONFIG_SYS_SRIO1_MEM_SIZE),
				LAW_TRGT_IF_RIO_1);
		srio1_used = 1;
		printf("SRIO1: enabled\n");
	} else {
		printf("SRIO1: disabled\n");
	}

#ifdef CONFIG_SRIO2
	if (is_serdes_configured(SRIO2)) {
		set_next_law(CONFIG_SYS_SRIO2_MEM_PHYS,
				law_size_bits(CONFIG_SYS_SRIO2_MEM_SIZE),
				LAW_TRGT_IF_RIO_2);
		srio2_used = 1;
		printf("SRIO2: enabled\n");
	} else {
		printf("SRIO2: disabled\n");
	}
#endif

#ifdef CONFIG_FSL_CORENET
	/* On FSL_CORENET devices we can disable individual ports */
	if (!srio1_used)
		setbits_be32(&gur->devdisr, FSL_CORENET_DEVDISR_SRIO1);
	if (!srio2_used)
		setbits_be32(&gur->devdisr, FSL_CORENET_DEVDISR_SRIO2);
#endif

	/* neither port is used - disable everything */
	if (!srio1_used && !srio2_used) {
		setbits_be32(&gur->devdisr, _DEVDISR_SRIO1);
		setbits_be32(&gur->devdisr, _DEVDISR_SRIO2);
		setbits_be32(&gur->devdisr, _DEVDISR_RMU);
	}
}