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c224e976f7
This adds the ability to expose CPU-specific features/extensions to scripts when the `platform` module is compiled in, by implementing `platform.processor()`. Right now this is only available on bare-metal RV32 and RV64. Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
119 lines
4.3 KiB
C
119 lines
4.3 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2021 Ibrahim Abdelkader <iabdalkader@openmv.io>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#include "py/runtime.h"
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#include "py/objtuple.h"
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#include "py/objstr.h"
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#include "py/mphal.h"
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#include "extmod/modplatform.h"
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#include "genhdr/mpversion.h"
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#if MICROPY_PY_PLATFORM
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// platform - Access to underlying platform's identifying data
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static const MP_DEFINE_STR_OBJ(info_platform_obj, MICROPY_PLATFORM_SYSTEM "-" \
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MICROPY_VERSION_STRING "-" MICROPY_PLATFORM_ARCH "-" MICROPY_PLATFORM_VERSION "-with-" \
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MICROPY_PLATFORM_LIBC_LIB "" MICROPY_PLATFORM_LIBC_VER);
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static const MP_DEFINE_STR_OBJ(info_python_compiler_obj, MICROPY_PLATFORM_COMPILER);
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static const MP_DEFINE_STR_OBJ(info_libc_lib_obj, MICROPY_PLATFORM_LIBC_LIB);
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static const MP_DEFINE_STR_OBJ(info_libc_ver_obj, MICROPY_PLATFORM_LIBC_VER);
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static const mp_rom_obj_tuple_t info_libc_tuple_obj = {
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{&mp_type_tuple}, 2, {MP_ROM_PTR(&info_libc_lib_obj), MP_ROM_PTR(&info_libc_ver_obj)}
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};
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static mp_obj_t platform_platform(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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return MP_OBJ_FROM_PTR(&info_platform_obj);
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}
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static MP_DEFINE_CONST_FUN_OBJ_KW(platform_platform_obj, 0, platform_platform);
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static mp_obj_t platform_python_compiler(void) {
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return MP_OBJ_FROM_PTR(&info_python_compiler_obj);
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}
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static MP_DEFINE_CONST_FUN_OBJ_0(platform_python_compiler_obj, platform_python_compiler);
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static mp_obj_t platform_libc_ver(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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return MP_OBJ_FROM_PTR(&info_libc_tuple_obj);
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}
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static MP_DEFINE_CONST_FUN_OBJ_KW(platform_libc_ver_obj, 0, platform_libc_ver);
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#ifdef __riscv
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static mp_obj_t platform_processor(void) {
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#if (__riscv_xlen <= 64) && !defined(__linux__)
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uintptr_t misa_csr = 0;
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// Load the MISA CSR directly.
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__asm volatile (
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"csrr %0, misa \n"
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: "+r" (misa_csr)
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:
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:
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);
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char processor_buffer[31] = { // "RV32"/"RV64" + up to 26 chars.
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#if (__riscv_xlen < 64)
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"RV32"
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#else
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"RV64"
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#endif
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};
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mp_uint_t offset = 4;
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for (mp_uint_t bit = 0; bit < 26; bit++) {
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if (misa_csr & (1U << bit)) {
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processor_buffer[offset++] = 'A' + bit;
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}
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}
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return mp_obj_new_str(processor_buffer, offset);
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#else
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return MP_OBJ_NEW_QSTR(MP_QSTR_);
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#endif
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}
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static MP_DEFINE_CONST_FUN_OBJ_0(platform_processor_obj, platform_processor);
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#endif
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static const mp_rom_map_elem_t modplatform_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_platform) },
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{ MP_ROM_QSTR(MP_QSTR_platform), MP_ROM_PTR(&platform_platform_obj) },
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{ MP_ROM_QSTR(MP_QSTR_python_compiler), MP_ROM_PTR(&platform_python_compiler_obj) },
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{ MP_ROM_QSTR(MP_QSTR_libc_ver), MP_ROM_PTR(&platform_libc_ver_obj) },
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#ifdef __riscv
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{ MP_ROM_QSTR(MP_QSTR_processor), MP_ROM_PTR(&platform_processor_obj) },
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#endif
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};
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static MP_DEFINE_CONST_DICT(modplatform_globals, modplatform_globals_table);
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const mp_obj_module_t mp_module_platform = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t *)&modplatform_globals,
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};
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MP_REGISTER_EXTENSIBLE_MODULE(MP_QSTR_platform, mp_module_platform);
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#endif // MICROPY_PY_PLATFORM
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