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30a63a204d
And use it in all ports. The ports are unchanged, except esp8266 which now just returns None from this function instead of the time elapsed (to match other ports), and qemu-arm which gains this function. Signed-off-by: Damien George <damien@micropython.org>
83 lines
2.9 KiB
C
83 lines
2.9 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) 2013-2023 Damien P. George
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* Copyright (c) 2015 Paul Sokolovsky
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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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// This file is never compiled standalone, it's included directly from
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// extmod/modmachine.c via MICROPY_PY_MACHINE_INCLUDEFILE.
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#if MICROPY_PLAT_DEV_MEM
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#define MICROPY_PAGE_SIZE 4096
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#define MICROPY_PAGE_MASK (MICROPY_PAGE_SIZE - 1)
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#endif
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#define MICROPY_PY_MACHINE_EXTRA_GLOBALS \
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{ MP_ROM_QSTR(MP_QSTR_PinBase), MP_ROM_PTR(&machine_pinbase_type) }, \
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// This variable is needed for machine.soft_reset(), but the variable is otherwise unused.
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int pyexec_system_exit = 0;
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uintptr_t mod_machine_mem_get_addr(mp_obj_t addr_o, uint align) {
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uintptr_t addr = mp_obj_get_int_truncated(addr_o);
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if ((addr & (align - 1)) != 0) {
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mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("address %08x is not aligned to %d bytes"), addr, align);
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}
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#if MICROPY_PLAT_DEV_MEM
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{
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// Not thread-safe
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static int fd;
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static uintptr_t last_base = (uintptr_t)-1;
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static uintptr_t map_page;
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if (!fd) {
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int _fd = open("/dev/mem", O_RDWR | O_SYNC);
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if (_fd == -1) {
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mp_raise_OSError(errno);
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}
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fd = _fd;
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}
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uintptr_t cur_base = addr & ~MICROPY_PAGE_MASK;
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if (cur_base != last_base) {
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map_page = (uintptr_t)mmap(NULL, MICROPY_PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, cur_base);
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last_base = cur_base;
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}
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addr = map_page + (addr & MICROPY_PAGE_MASK);
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}
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#endif
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return addr;
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}
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STATIC void mp_machine_idle(void) {
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#ifdef MICROPY_UNIX_MACHINE_IDLE
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MICROPY_UNIX_MACHINE_IDLE
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#else
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// Do nothing.
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#endif
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}
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