arch/powerpc/cpu/mpc8xxx/cpu.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * 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.
  */

 #include <config.h>
 #include <common.h>
 #include <command.h>
 #include <cpu_func.h>
 #include <init.h>
 #include <net.h>
 #include <tsec.h>
 #include <fm_eth.h>
 #include <netdev.h>
 #include <asm/cache.h>
 #include <asm/global_data.h>
 #include <asm/io.h>
 #include <vsc9953.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(T4160, T4160, 0),
 	CPU_TYPE_ENTRY(T4080, T4080, 4),
 	CPU_TYPE_ENTRY(B4860, B4860, 0),
 	CPU_TYPE_ENTRY(G4860, G4860, 0),
 	CPU_TYPE_ENTRY(B4440, B4440, 0),
 	CPU_TYPE_ENTRY(B4460, B4460, 0),
 	CPU_TYPE_ENTRY(G4440, G4440, 0),
 	CPU_TYPE_ENTRY(B4420, B4420, 0),
 	CPU_TYPE_ENTRY(B4220, B4220, 0),
 	CPU_TYPE_ENTRY(T1040, T1040, 0),
 	CPU_TYPE_ENTRY(T1041, T1041, 0),
 	CPU_TYPE_ENTRY(T1042, T1042, 0),
 	CPU_TYPE_ENTRY(T1020, T1020, 0),
 	CPU_TYPE_ENTRY(T1021, T1021, 0),
 	CPU_TYPE_ENTRY(T1022, T1022, 0),
 	CPU_TYPE_ENTRY(T1024, T1024, 0),
 	CPU_TYPE_ENTRY(T1023, T1023, 0),
 	CPU_TYPE_ENTRY(T1014, T1014, 0),
 	CPU_TYPE_ENTRY(T1013, T1013, 0),
 	CPU_TYPE_ENTRY(T2080, T2080, 0),
 	CPU_TYPE_ENTRY(T2081, T2081, 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),
 	CPU_TYPE_ENTRY(C291, C291, 1),
 	CPU_TYPE_ENTRY(C292, C292, 1),
 	CPU_TYPE_ENTRY(C293, C293, 1),
 #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
 static inline u32 init_type(u32 cluster, int init_id)
 {
 	ccsr_gur_t *gur = (void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 	u32 idx = (cluster >> (init_id * 8)) & TP_CLUSTER_INIT_MASK;
 	u32 type = in_be32(&gur->tp_ityp[idx]);

 	if (type & TP_ITYP_AV)
 		return type;

 	return 0;
 }

 u32 compute_ppc_cpumask(void)
 {
 	ccsr_gur_t *gur = (void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 	int i = 0, count = 0;
 	u32 cluster, type, mask = 0;

 	do {
 		int j;
 		cluster = in_be32(&gur->tp_cluster[i].lower);
 		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
 			type = init_type(cluster, j);
 			if (type) {
 				if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_PPC)
 					mask |= 1 << count;
 				count++;
 			}
 		}
 		i++;
 	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

 	return mask;
 }

 #ifdef CONFIG_HETROGENOUS_CLUSTERS
 u32 compute_dsp_cpumask(void)
 {
 	ccsr_gur_t *gur = (void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 	int i = CONFIG_DSP_CLUSTER_START, count = 0;
 	u32 cluster, type, dsp_mask = 0;

 	do {
 		int j;
 		cluster = in_be32(&gur->tp_cluster[i].lower);
 		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
 			type = init_type(cluster, j);
 			if (type) {
 				if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_SC)
 					dsp_mask |= 1 << count;
 				count++;
 			}
 		}
 		i++;
 	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

 	return dsp_mask;
 }

 int fsl_qoriq_dsp_core_to_cluster(unsigned int core)
 {
 	ccsr_gur_t *gur = (void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 	int count = 0, i = CONFIG_DSP_CLUSTER_START;
 	u32 cluster;

 	do {
 		int j;
 		cluster = in_be32(&gur->tp_cluster[i].lower);
 		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
 			if (init_type(cluster, j)) {
 				if (count == core)
 					return i;
 				count++;
 			}
 		}
 		i++;
 	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

 	return -1;	/* cannot identify the cluster */
 }
 #endif

 int fsl_qoriq_core_to_cluster(unsigned int core)
 {
 	ccsr_gur_t *gur = (void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 	int i = 0, count = 0;
 	u32 cluster;

 	do {
 		int j;
 		cluster = in_be32(&gur->tp_cluster[i].lower);
 		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
 			if (init_type(cluster, j)) {
 				if (count == core)
 					return i;
 				count++;
 			}
 		}
 		i++;
 	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

 	return -1;	/* cannot identify the cluster */
 }

 #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
 #define fsl_qoriq_core_to_cluster(x) x
 #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.
  */
 __weak u32 cpu_mask(void)
 {
 	ccsr_pic_t __iomem *pic = (void *)CFG_SYS_MPC8xxx_PIC_ADDR;
 	struct cpu_type *cpu = gd->arch.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;
 }

 #ifdef CONFIG_HETROGENOUS_CLUSTERS
 __weak u32 cpu_dsp_mask(void)
 {
 	ccsr_pic_t __iomem *pic = (void *)CFG_SYS_MPC8xxx_PIC_ADDR;
 	struct cpu_type *cpu = gd->arch.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->dsp_num_cores == 0)
 		return compute_dsp_cpumask();

 	return cpu->dsp_mask;
 }

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

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

 	return cpu->dsp_num_cores;
 }
 #endif

 /*
  * Return the number of PPC cores on this SOC.
  */
 __weak int cpu_numcores(void)
 {
 	struct cpu_type *cpu = gd->arch.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 arch_cpu_init(void)
 {
 	uint svr;
 	uint ver;

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

 	gd->arch.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->arch.cpu;

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

 #ifdef CONFIG_HETROGENOUS_CLUSTERS
 	if (cpu->dsp_num_cores == 0) {
 		cpu->dsp_mask = cpu_dsp_mask();
 		cpu->dsp_num_cores = cpu_num_dspcores();
 	}
 #endif
 	return 0;
 }
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* 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.
	*/

	#include <config.h>
	#include <common.h>
	#include <command.h>
	#include <cpu_func.h>
	#include <init.h>
	#include <net.h>
	#include <tsec.h>
	#include <fm_eth.h>
	#include <netdev.h>
	#include <asm/cache.h>
	#include <asm/global_data.h>
	#include <asm/io.h>
	#include <vsc9953.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(T4160, T4160, 0),
	CPU_TYPE_ENTRY(T4080, T4080, 4),
	CPU_TYPE_ENTRY(B4860, B4860, 0),
	CPU_TYPE_ENTRY(G4860, G4860, 0),
	CPU_TYPE_ENTRY(B4440, B4440, 0),
	CPU_TYPE_ENTRY(B4460, B4460, 0),
	CPU_TYPE_ENTRY(G4440, G4440, 0),
	CPU_TYPE_ENTRY(B4420, B4420, 0),
	CPU_TYPE_ENTRY(B4220, B4220, 0),
	CPU_TYPE_ENTRY(T1040, T1040, 0),
	CPU_TYPE_ENTRY(T1041, T1041, 0),
	CPU_TYPE_ENTRY(T1042, T1042, 0),
	CPU_TYPE_ENTRY(T1020, T1020, 0),
	CPU_TYPE_ENTRY(T1021, T1021, 0),
	CPU_TYPE_ENTRY(T1022, T1022, 0),
	CPU_TYPE_ENTRY(T1024, T1024, 0),
	CPU_TYPE_ENTRY(T1023, T1023, 0),
	CPU_TYPE_ENTRY(T1014, T1014, 0),
	CPU_TYPE_ENTRY(T1013, T1013, 0),
	CPU_TYPE_ENTRY(T2080, T2080, 0),
	CPU_TYPE_ENTRY(T2081, T2081, 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),
	CPU_TYPE_ENTRY(C291, C291, 1),
	CPU_TYPE_ENTRY(C292, C292, 1),
	CPU_TYPE_ENTRY(C293, C293, 1),
	#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
	static inline u32 init_type(u32 cluster, int init_id)
	{
	ccsr_gur_t gur = (void __iomem )(CFG_SYS_MPC85xx_GUTS_ADDR);
	u32 idx = (cluster >> (init_id * 8)) & TP_CLUSTER_INIT_MASK;
	u32 type = in_be32(&gur->tp_ityp[idx]);

	if (type & TP_ITYP_AV)
	return type;

	return 0;
	}

	u32 compute_ppc_cpumask(void)
	{
	ccsr_gur_t gur = (void __iomem )(CFG_SYS_MPC85xx_GUTS_ADDR);
	int i = 0, count = 0;
	u32 cluster, type, mask = 0;

	do {
	int j;
	cluster = in_be32(&gur->tp_cluster[i].lower);
	for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
	type = init_type(cluster, j);
	if (type) {
	if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_PPC)
	mask \|= 1 << count;
	count++;
	}
	}
	i++;
	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

	return mask;
	}

	#ifdef CONFIG_HETROGENOUS_CLUSTERS
	u32 compute_dsp_cpumask(void)
	{
	ccsr_gur_t gur = (void __iomem )(CFG_SYS_MPC85xx_GUTS_ADDR);
	int i = CONFIG_DSP_CLUSTER_START, count = 0;
	u32 cluster, type, dsp_mask = 0;

	do {
	int j;
	cluster = in_be32(&gur->tp_cluster[i].lower);
	for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
	type = init_type(cluster, j);
	if (type) {
	if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_SC)
	dsp_mask \|= 1 << count;
	count++;
	}
	}
	i++;
	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

	return dsp_mask;
	}

	int fsl_qoriq_dsp_core_to_cluster(unsigned int core)
	{
	ccsr_gur_t gur = (void __iomem )(CFG_SYS_MPC85xx_GUTS_ADDR);
	int count = 0, i = CONFIG_DSP_CLUSTER_START;
	u32 cluster;

	do {
	int j;
	cluster = in_be32(&gur->tp_cluster[i].lower);
	for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
	if (init_type(cluster, j)) {
	if (count == core)
	return i;
	count++;
	}
	}
	i++;
	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

	return -1; /* cannot identify the cluster */
	}
	#endif

	int fsl_qoriq_core_to_cluster(unsigned int core)
	{
	ccsr_gur_t gur = (void __iomem )(CFG_SYS_MPC85xx_GUTS_ADDR);
	int i = 0, count = 0;
	u32 cluster;

	do {
	int j;
	cluster = in_be32(&gur->tp_cluster[i].lower);
	for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
	if (init_type(cluster, j)) {
	if (count == core)
	return i;
	count++;
	}
	}
	i++;
	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);

	return -1; /* cannot identify the cluster */
	}

	#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
	#define fsl_qoriq_core_to_cluster(x) x
	#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.
	*/
	__weak u32 cpu_mask(void)
	{
	ccsr_pic_t __iomem pic = (void )CFG_SYS_MPC8xxx_PIC_ADDR;
	struct cpu_type *cpu = gd->arch.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;
	}

	#ifdef CONFIG_HETROGENOUS_CLUSTERS
	__weak u32 cpu_dsp_mask(void)
	{
	ccsr_pic_t __iomem pic = (void )CFG_SYS_MPC8xxx_PIC_ADDR;
	struct cpu_type *cpu = gd->arch.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->dsp_num_cores == 0)
	return compute_dsp_cpumask();

	return cpu->dsp_mask;
	}

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

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

	return cpu->dsp_num_cores;
	}
	#endif

	/*
	* Return the number of PPC cores on this SOC.
	*/
	__weak int cpu_numcores(void)
	{
	struct cpu_type *cpu = gd->arch.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 arch_cpu_init(void)
	{
	uint svr;
	uint ver;

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

	gd->arch.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->arch.cpu;

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

	#ifdef CONFIG_HETROGENOUS_CLUSTERS
	if (cpu->dsp_num_cores == 0) {
	cpu->dsp_mask = cpu_dsp_mask();
	cpu->dsp_num_cores = cpu_num_dspcores();
	}
	#endif
	return 0;
	}