73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Copyright 2009-2011 Freescale Semiconductor, Inc.
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*
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* This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
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* arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
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* cpu specific common code for 85xx/86xx processors.
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <config.h>
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#include <common.h>
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#include <command.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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#include <mach/immap_85xx.h>
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struct cpu_type cpu_type_list[] = {
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CPU_TYPE_ENTRY(8544, 8544, 1),
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CPU_TYPE_ENTRY(8544, 8544_E, 1),
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CPU_TYPE_ENTRY(P1022, P1022, 2),
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CPU_TYPE_ENTRY(P2020, P2020, 2),
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CPU_TYPE_ENTRY(P2020, P2020_E, 2),
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};
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struct cpu_type cpu_type_unknown = CPU_TYPE_ENTRY(Unknown, Unknown, 1);
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struct cpu_type *identify_cpu(u32 ver)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++) {
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if (cpu_type_list[i].soc_ver == ver)
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return &cpu_type_list[i];
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}
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return &cpu_type_unknown;
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}
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int fsl_cpu_numcores(void)
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{
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void __iomem *pic = (void __iomem *)MPC8xxx_PIC_ADDR;
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struct cpu_type *cpu;
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uint svr;
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uint ver;
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int tmp;
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svr = get_svr();
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ver = SVR_SOC_VER(svr);
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cpu = identify_cpu(ver);
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/* better to query feature reporting register than just assume 1 */
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if (cpu == &cpu_type_unknown) {
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tmp = in_be32(pic + MPC85xx_PIC_FRR_OFFSET);
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tmp = (tmp & MPC8xxx_PICFRR_NCPU_MASK) >>
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MPC8xxx_PICFRR_NCPU_SHIFT;
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tmp += 1;
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} else {
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tmp = cpu->num_cores;
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}
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return tmp;
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}
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