/*
 * Copyright 2009-2012 Freescale Semiconductor, Inc.
 *
 * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
 * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
 * cpu specific common code for 85xx/86xx processors.
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 <config.h>
#include <common.h>
#include <command.h>
#include <tsec.h>
#include <fm_eth.h>
#include <netdev.h>
#include <asm/cache.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

static struct cpu_type cpu_type_list[] = {
#if defined(CONFIG_MPC85xx)
	CPU_TYPE_ENTRY(8533, 8533, 1),
	CPU_TYPE_ENTRY(8535, 8535, 1),
	CPU_TYPE_ENTRY(8536, 8536, 1),
	CPU_TYPE_ENTRY(8540, 8540, 1),
	CPU_TYPE_ENTRY(8541, 8541, 1),
	CPU_TYPE_ENTRY(8543, 8543, 1),
	CPU_TYPE_ENTRY(8544, 8544, 1),
	CPU_TYPE_ENTRY(8545, 8545, 1),
	CPU_TYPE_ENTRY(8547, 8547, 1),
	CPU_TYPE_ENTRY(8548, 8548, 1),
	CPU_TYPE_ENTRY(8555, 8555, 1),
	CPU_TYPE_ENTRY(8560, 8560, 1),
	CPU_TYPE_ENTRY(8567, 8567, 1),
	CPU_TYPE_ENTRY(8568, 8568, 1),
	CPU_TYPE_ENTRY(8569, 8569, 1),
	CPU_TYPE_ENTRY(8572, 8572, 2),
	CPU_TYPE_ENTRY(P1010, P1010, 1),
	CPU_TYPE_ENTRY(P1011, P1011, 1),
	CPU_TYPE_ENTRY(P1012, P1012, 1),
	CPU_TYPE_ENTRY(P1013, P1013, 1),
	CPU_TYPE_ENTRY(P1014, P1014, 1),
	CPU_TYPE_ENTRY(P1017, P1017, 1),
	CPU_TYPE_ENTRY(P1020, P1020, 2),
	CPU_TYPE_ENTRY(P1021, P1021, 2),
	CPU_TYPE_ENTRY(P1022, P1022, 2),
	CPU_TYPE_ENTRY(P1023, P1023, 2),
	CPU_TYPE_ENTRY(P1024, P1024, 2),
	CPU_TYPE_ENTRY(P1025, P1025, 2),
	CPU_TYPE_ENTRY(P2010, P2010, 1),
	CPU_TYPE_ENTRY(P2020, P2020, 2),
	CPU_TYPE_ENTRY(P2040, P2040, 4),
	CPU_TYPE_ENTRY(P2041, P2041, 4),
	CPU_TYPE_ENTRY(P3041, P3041, 4),
	CPU_TYPE_ENTRY(P4040, P4040, 4),
	CPU_TYPE_ENTRY(P4080, P4080, 8),
	CPU_TYPE_ENTRY(P5010, P5010, 1),
	CPU_TYPE_ENTRY(P5020, P5020, 2),
	CPU_TYPE_ENTRY(P5021, P5021, 2),
	CPU_TYPE_ENTRY(P5040, P5040, 4),
	CPU_TYPE_ENTRY(T4240, T4240, 0),
	CPU_TYPE_ENTRY(T4120, T4120, 0),
	CPU_TYPE_ENTRY(B4860, B4860, 0),
	CPU_TYPE_ENTRY(G4860, G4860, 0),
	CPU_TYPE_ENTRY(G4060, G4060, 0),
	CPU_TYPE_ENTRY(B4440, B4440, 0),
	CPU_TYPE_ENTRY(G4440, G4440, 0),
	CPU_TYPE_ENTRY(B4420, B4420, 0),
	CPU_TYPE_ENTRY(B4220, B4220, 0),
	CPU_TYPE_ENTRY(BSC9130, 9130, 1),
	CPU_TYPE_ENTRY(BSC9131, 9131, 1),
	CPU_TYPE_ENTRY(BSC9132, 9132, 2),
	CPU_TYPE_ENTRY(BSC9232, 9232, 2),
#elif defined(CONFIG_MPC86xx)
	CPU_TYPE_ENTRY(8610, 8610, 1),
	CPU_TYPE_ENTRY(8641, 8641, 2),
	CPU_TYPE_ENTRY(8641D, 8641D, 2),
#endif
};

#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
u32 compute_ppc_cpumask(void)
{
	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	int i = 0, count = 0;
	u32 cluster, mask = 0;

	do {
		int j;
		cluster = in_be32(&gur->tp_cluster[i++].lower);
		for (j = 0; j < 4; j++) {
			u32 idx = (cluster >> (j*8)) & TP_CLUSTER_INIT_MASK;
			u32 type = in_be32(&gur->tp_ityp[idx]);

			if (type & TP_ITYP_AV) {
				if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_PPC)
					mask |= 1 << count;
			}
			count++;
		}
	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

	return mask;
}
#else /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
/*
 * Before chassis genenration 2, the cpumask should be hard-coded.
 * In case of cpu type unknown or cpumask unset, use 1 as fail save.
 */
#define compute_ppc_cpumask()	1
#endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */

static struct cpu_type cpu_type_unknown = CPU_TYPE_ENTRY(Unknown, Unknown, 0);

struct cpu_type *identify_cpu(u32 ver)
{
	int i;
	for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++) {
		if (cpu_type_list[i].soc_ver == ver)
			return &cpu_type_list[i];
	}
	return &cpu_type_unknown;
}

#define MPC8xxx_PICFRR_NCPU_MASK  0x00001f00
#define MPC8xxx_PICFRR_NCPU_SHIFT 8

/*
 * Return a 32-bit mask indicating which cores are present on this SOC.
 */
u32 cpu_mask(void)
{
	ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC8xxx_PIC_ADDR;
	struct cpu_type *cpu = gd->cpu;

	/* better to query feature reporting register than just assume 1 */
	if (cpu == &cpu_type_unknown)
	return ((in_be32(&pic->frr) & MPC8xxx_PICFRR_NCPU_MASK) >>
			MPC8xxx_PICFRR_NCPU_SHIFT) + 1;

	if (cpu->num_cores == 0)
		return compute_ppc_cpumask();

	return cpu->mask;
}

/*
 * Return the number of cores on this SOC.
 */
int cpu_numcores(void)
{
	struct cpu_type *cpu = gd->cpu;

	/*
	 * Report # of cores in terms of the cpu_mask if we haven't
	 * figured out how many there are yet
	 */
	if (cpu->num_cores == 0)
		return hweight32(cpu_mask());

	return cpu->num_cores;
}

/*
 * Check if the given core ID is valid
 *
 * Returns zero if it isn't, 1 if it is.
 */
int is_core_valid(unsigned int core)
{
	return !!((1 << core) & cpu_mask());
}

int probecpu (void)
{
	uint svr;
	uint ver;

	svr = get_svr();
	ver = SVR_SOC_VER(svr);

	gd->cpu = identify_cpu(ver);

	return 0;
}

/* Once in memory, compute mask & # cores once and save them off */
int fixup_cpu(void)
{
	struct cpu_type *cpu = gd->cpu;

	if (cpu->num_cores == 0) {
		cpu->mask = cpu_mask();
		cpu->num_cores = cpu_numcores();
	}

	return 0;
}

/*
 * Initializes on-chip ethernet controllers.
 * to override, implement board_eth_init()
 */
int cpu_eth_init(bd_t *bis)
{
#if defined(CONFIG_ETHER_ON_FCC)
	fec_initialize(bis);
#endif

#if defined(CONFIG_UEC_ETH)
	uec_standard_init(bis);
#endif

#if defined(CONFIG_TSEC_ENET) || defined(CONFIG_MPC85XX_FEC)
	tsec_standard_init(bis);
#endif

#ifdef CONFIG_FMAN_ENET
	fm_standard_init(bis);
#endif
	return 0;
}