91 lines
3.5 KiB
C
91 lines
3.5 KiB
C
/****************************************************************************
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* arch/arm/src/armv6-m/arm_cpuinfo.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/fs/procfs.h>
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#include <nuttx/arch.h>
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#include "arm_internal.h"
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#include "hwcap.h"
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#include "nvic.h"
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#if defined(CONFIG_FS_PROCFS) && !defined(CONFIG_FS_PROCFS_EXCLUDE_CPUINFO)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* name: up_show_cpuinfo
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****************************************************************************/
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ssize_t up_show_cpuinfo(char *buf, size_t buf_size, off_t file_off)
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{
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int i;
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uint32_t cpuid;
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for (i = 0; i < CONFIG_SMP_NCPUS; i++)
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{
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procfs_sprintf(buf, buf_size, &file_off, "processor\t: %d\n", i);
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procfs_sprintf(buf, buf_size, &file_off, "BogoMIPS\t: %u.%02u\n",
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(CONFIG_BOARD_LOOPSPERMSEC / 1000),
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(CONFIG_BOARD_LOOPSPERMSEC / 10) % 100);
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procfs_sprintf(buf, buf_size, &file_off, "cpu MHz\t\t: %u.%03u\n",
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CONFIG_ARCH_CPUINFO_FREQ_KHZ / 1000,
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CONFIG_ARCH_CPUINFO_FREQ_KHZ % 1000);
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/* CPU Features */
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procfs_sprintf(buf, buf_size, &file_off, "Features\t:");
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procfs_sprintf(buf, buf_size, &file_off, " %s %s %s %s",
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HWCAP_HALF, HWCAP_FAST_MULT, HWCAP_THUMB, HWCAP_EDSP);
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#ifdef CONFIG_SCHED_THREAD_LOCAL
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procfs_sprintf(buf, buf_size, &file_off, " %s", HWCAP_TLS);
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#endif
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/* Cpuid info */
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cpuid = getreg32(ARMV6M_SYSCON_CPUID);
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procfs_sprintf(buf, buf_size, &file_off,
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"\nmodel name\t: %s rev %" PRIx32 " (%s)\n"
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"CPU architecture: %s\n",
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"ARMv6-compatible processor", cpuid & 15, "v6", "6TEJ");
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procfs_sprintf(buf, buf_size, &file_off,
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"CPU implementer\t: 0x%02" PRIx32 "\n"
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"CPU variant\t: 0x%" PRIx32 "\n"
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"CPU part\t: 0x%03" PRIx32 "\n"
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"CPU revision\t: %" PRIu32"\n\n",
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cpuid >> 24,
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(cpuid >> 20) & 0xf,
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(cpuid >> 4) & 0xfff,
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cpuid & 0xf);
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}
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return -file_off;
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}
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#endif /* CONFIG_FS_PROCFS && !CONFIG_FS_PROCFS_EXCLUDE_CPUINFO */
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