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commit 8a5bf87c72fc19ebe7d1831a04be96087c0fee87 Author: liaoao <[email protected]> AuthorDate: Tue May 16 15:41:49 2023 +0800 procfs：add risc-v cpuinfo Signed-off-by: liaoao <[email protected]> --- arch/Kconfig | 1 + arch/risc-v/src/common/Make.defs | 2 +- arch/risc-v/src/common/riscv_cpuinfo.c | 82 ++++++++++++++++++++++++++++++++++ 3 files changed, 84 insertions(+), 1 deletion(-) diff --git a/arch/Kconfig b/arch/Kconfig index b7f4ca5a2c..f610488d2f 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -78,6 +78,7 @@ config ARCH_RENESAS config ARCH_RISCV bool "RISC-V" select ARCH_HAVE_BACKTRACE + select ARCH_HAVE_CPUINFO select ARCH_HAVE_INTERRUPTSTACK select ARCH_HAVE_STACKCHECK select ARCH_HAVE_VFORK diff --git a/arch/risc-v/src/common/Make.defs b/arch/risc-v/src/common/Make.defs index b85fdcd100..6fa161de70 100644 --- a/arch/risc-v/src/common/Make.defs +++ b/arch/risc-v/src/common/Make.defs @@ -28,7 +28,7 @@ CMN_ASRCS += riscv_saveusercontext.S # Specify C code within the common directory to be included CMN_CSRCS += riscv_initialize.c riscv_swint.c riscv_mtimer.c -CMN_CSRCS += riscv_allocateheap.c riscv_createstack.c +CMN_CSRCS += riscv_allocateheap.c riscv_createstack.c riscv_cpuinfo.c CMN_CSRCS += riscv_cpuidlestack.c riscv_doirq.c riscv_exit.c riscv_exception.c CMN_CSRCS += riscv_getnewintctx.c riscv_getintstack.c riscv_initialstate.c CMN_CSRCS += riscv_idle.c riscv_modifyreg32.c riscv_nputs.c riscv_releasestack.c diff --git a/arch/risc-v/src/common/riscv_cpuinfo.c b/arch/risc-v/src/common/riscv_cpuinfo.c new file mode 100644 index 0000000000..beb6d644eb --- /dev/null +++ b/arch/risc-v/src/common/riscv_cpuinfo.c @@ -0,0 +1,82 @@ +/**************************************************************************** + * arch/risc-v/src/common/riscv_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/arch.h> +#include <nuttx/config.h> +#include <nuttx/fs/procfs.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; + + 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, "hart\t\t: %d\n", i); + + /* ISA */ + + procfs_sprintf(buf, buf_size, &file_off, "isa\t\t: %si", + CONFIG_ARCH_FAMILY); +#ifdef CONFIG_ARCH_RV_ISA_M + procfs_sprintf(buf, buf_size, &file_off, "%s", "m"); +#endif +#ifdef CONFIG_ARCH_RV_ISA_A + procfs_sprintf(buf, buf_size, &file_off, "%s", "a"); +#endif +#ifdef CONFIG_ARCH_FPU + procfs_sprintf(buf, buf_size, &file_off, "%s", "f"); +#endif +#ifdef CONFIG_ARCH_DPFPU + procfs_sprintf(buf, buf_size, &file_off, "%s", "d"); +#endif +#ifdef CONFIG_ARCH_RV_ISA_C + procfs_sprintf(buf, buf_size, &file_off, "%s", "c"); +#endif + + /* MMU type */ + + procfs_sprintf(buf, buf_size, &file_off, "\nmmu\t\t: "); +#ifdef ARCH_HAVE_MMU +# ifdef ARCH_MMU_TYPE_SV39 + procfs_sprintf(buf, buf_size, &file_off, "%s\n", "sv39"); +# endif +#else + procfs_sprintf(buf, buf_size, &file_off, "%s\n", "none"); +#endif + } + + return -file_off; +} +#endif /* CONFIG_FS_PROCFS && !CONFIG_FS_PROCFS_EXCLUDE_CPUINFO */
