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procfs:add armv6-m cpuinfo

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signed-off-by: liaoao <liaoao@xiaomi.com>
This commit is contained in:
liaoao
2023-05-15 16:34:38 +08:00
committed by Xiang Xiao
parent ac76a8fe0f
commit c1eecd7c4f
2 changed files with 90 additions and 1 deletions
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arch/arm/src/armv6-m/Make.defs
+1 -1
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@@ -24,7 +24,7 @@ include common/Make.defs
CMN_ASRCS += arm_exception.S arm_saveusercontext.S
CMN_CSRCS += arm_doirq.c arm_hardfault.c arm_initialstate.c
CMN_CSRCS += arm_cpuinfo.c arm_doirq.c arm_hardfault.c arm_initialstate.c
CMN_CSRCS += arm_schedulesigaction.c arm_sigdeliver.c arm_svcall.c
CMN_CSRCS += arm_systemreset.c arm_tcbinfo.c arm_vectors.c
arch/arm/src/armv6-m/arm_cpuinfo.c
+89
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@@ -0,0 +1,89 @@
/****************************************************************************
* arch/arm/src/armv6-m/arm_cpuinfo.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs/procfs.h>
#include <nuttx/arch.h>
#include "arm_internal.h"
#include "hwcap.h"
#include "nvic.h"
#if defined(CONFIG_FS_PROCFS) && !defined(CONFIG_FS_PROCFS_EXCLUDE_CPUINFO)
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* name: up_show_cpuinfo
****************************************************************************/
ssize_t up_show_cpuinfo(FAR char *buf, size_t buf_size, off_t file_off)
{
int i;
uint32_t cpuid;
for (i = 0; i < CONFIG_SMP_NCPUS; i++)
{
procfs_sprintf(buf, buf_size, &file_off, "processor\t: %d\n", i);
procfs_sprintf(buf, buf_size, &file_off, "BogoMIPS\t: %u.%02u\n",
(CONFIG_BOARD_LOOPSPERMSEC / 1000),
(CONFIG_BOARD_LOOPSPERMSEC / 10) % 100);
procfs_sprintf(buf, buf_size, &file_off, "cpu MHz\t\t: %lu.%02lu\n",
up_perf_getfreq() / 1000000,
(up_perf_getfreq() / 10000) % 100);
/* CPU Features */
procfs_sprintf(buf, buf_size, &file_off, "Features\t:");
procfs_sprintf(buf, buf_size, &file_off, " %s %s %s %s",
HWCAP_HALF, HWCAP_FAST_MULT, HWCAP_THUMB, HWCAP_EDSP);
#ifdef CONFIG_SCHED_THREAD_LOCAL
procfs_sprintf(buf, buf_size, &file_off, " %s", HWCAP_TLS);
#endif
/* Cpuid info */
cpuid = getreg32(ARMV6M_SYSCON_CPUID);
procfs_sprintf(buf, buf_size, &file_off,
"\nmodel name\t: %s rev %" PRIx32 " (%s)\n"
"CPU architecture: %s\n",
"ARMv6-compatible processor", cpuid & 15, "v6", "6TEJ");
procfs_sprintf(buf, buf_size, &file_off,
"CPU implementer\t: 0x%02" PRIx32 "\n"
"CPU variant\t: 0x%" PRIx32 "\n"
"CPU part\t: 0x%03" PRIx32 "\n"
"CPU revision\t: %" PRIu32"\n\n",
cpuid >> 24,
(cpuid >> 20) & 0xf,
(cpuid >> 4) & 0xfff,
cpuid & 0xf);
}
return -file_off;
}
#endif /* CONFIG_FS_PROCFS && !CONFIG_FS_PROCFS_EXCLUDE_CPUINFO */