189 lines
6.8 KiB
C
189 lines
6.8 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) 2019 Damien P. George
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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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#include <stdio.h>
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#include "py/runtime.h"
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#include "extmod/vfs.h"
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#include "samd_soc.h"
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#include "hal_flash.h"
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// ASF 4
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#include "hal_flash.h"
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#include "hal_init.h"
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#include "hpl_gclk_base.h"
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#if defined(MCU_SAMD21)
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#include "lib/asf4/samd21/hpl/pm/hpl_pm_base.h"
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#elif defined(MCU_SAMD51)
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#include "lib/asf4/samd51/hpl/pm/hpl_pm_base.h"
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#include "lib/asf4/samd51/hri/hri_mclk_d51.h"
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#endif
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static struct flash_descriptor flash_desc;
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STATIC mp_int_t BLOCK_SIZE = VFS_BLOCK_SIZE_BYTES; // Board specific: mpconfigboard.h
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extern const mp_obj_type_t samd_flash_type;
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typedef struct _samd_flash_obj_t {
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mp_obj_base_t base;
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uint32_t flash_base;
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uint32_t flash_size;
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} samd_flash_obj_t;
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extern uint8_t _oflash_fs, _sflash_fs;
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// Build a Flash storage at top.
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STATIC samd_flash_obj_t samd_flash_obj = {
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.base = { &samd_flash_type },
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.flash_base = (uint32_t)&_oflash_fs, // Get from MCU-Specific loader script.
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.flash_size = (uint32_t)&_sflash_fs, // Get from MCU-Specific loader script.
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};
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// FLASH stuff
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STATIC mp_obj_t samd_flash_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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// No args required. bdev=Flash(). Start Addr & Size defined in samd_flash_obj.
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mp_arg_check_num(n_args, n_kw, 0, 0, false);
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// Return singleton object.
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return MP_OBJ_FROM_PTR(&samd_flash_obj);
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}
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// Flash init (from cctpy)
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// Method is needed for when MP starts up in _boot.py
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STATIC mp_obj_t samd_flash_init(void) {
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#ifdef SAMD51
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hri_mclk_set_AHBMASK_NVMCTRL_bit(MCLK);
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#endif
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#ifdef SAMD21
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_pm_enable_bus_clock(PM_BUS_APBB, NVMCTRL);
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#endif
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flash_init(&flash_desc, NVMCTRL);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(samd_flash_init_obj, samd_flash_init);
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// Function for ioctl.
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STATIC mp_obj_t eraseblock(uint32_t sector_in) {
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// Destination address aligned with page start to be erased.
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uint32_t DEST_ADDR = sector_in; // Number of pages to be erased.
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mp_int_t PAGE_SIZE = flash_get_page_size(&flash_desc); // adf4 API call
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flash_erase(&flash_desc, DEST_ADDR, (BLOCK_SIZE / PAGE_SIZE));
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return mp_const_none;
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}
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STATIC mp_obj_t samd_flash_version(void) {
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return MP_OBJ_NEW_SMALL_INT(flash_get_version());
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(samd_flash_version_obj, samd_flash_version);
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STATIC mp_obj_t samd_flash_size(void) {
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// ASF4 API calls
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mp_int_t PAGES = flash_get_total_pages(&flash_desc);
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mp_int_t PAGE_SIZE = flash_get_page_size(&flash_desc);
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return MP_OBJ_NEW_SMALL_INT(PAGES * PAGE_SIZE);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(samd_flash_size_obj, samd_flash_size);
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STATIC mp_obj_t samd_flash_readblocks(size_t n_args, const mp_obj_t *args) {
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uint32_t offset = (mp_obj_get_int(args[1]) * BLOCK_SIZE) + samd_flash_obj.flash_base;
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_WRITE);
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if (n_args == 4) {
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offset += mp_obj_get_int(args[3]);
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}
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// Read data to flash (adf4 API)
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flash_read(&flash_desc, offset, bufinfo.buf, bufinfo.len);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(samd_flash_readblocks_obj, 3, 4, samd_flash_readblocks);
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STATIC mp_obj_t samd_flash_writeblocks(size_t n_args, const mp_obj_t *args) {
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uint32_t offset = (mp_obj_get_int(args[1]) * BLOCK_SIZE) + samd_flash_obj.flash_base;
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_READ);
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if (n_args == 3) {
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eraseblock(offset);
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// TODO check return value
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} else {
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offset += mp_obj_get_int(args[3]);
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}
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// Write data to flash (adf4 API)
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flash_write(&flash_desc, offset, bufinfo.buf, bufinfo.len);
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// TODO check return value
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(samd_flash_writeblocks_obj, 3, 4, samd_flash_writeblocks);
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STATIC mp_obj_t samd_flash_ioctl(mp_obj_t self_in, mp_obj_t cmd_in, mp_obj_t arg_in) {
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samd_flash_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_int_t cmd = mp_obj_get_int(cmd_in);
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switch (cmd) {
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case MP_BLOCKDEV_IOCTL_INIT:
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samd_flash_init();
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return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_DEINIT:
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return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_SYNC:
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return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_BLOCK_COUNT:
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return MP_OBJ_NEW_SMALL_INT(self->flash_size / BLOCK_SIZE);
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case MP_BLOCKDEV_IOCTL_BLOCK_SIZE:
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return MP_OBJ_NEW_SMALL_INT(BLOCK_SIZE);
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case MP_BLOCKDEV_IOCTL_BLOCK_ERASE: {
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eraseblock(mp_obj_get_int(arg_in) * BLOCK_SIZE + samd_flash_obj.flash_base);
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// TODO check return value
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return MP_OBJ_NEW_SMALL_INT(0);
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}
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default:
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return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(samd_flash_ioctl_obj, samd_flash_ioctl);
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STATIC const mp_rom_map_elem_t samd_flash_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_flash_version), MP_ROM_PTR(&samd_flash_version_obj) },
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{ MP_ROM_QSTR(MP_QSTR_flash_size), MP_ROM_PTR(&samd_flash_size_obj) },
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{ MP_ROM_QSTR(MP_QSTR_flash_init), MP_ROM_PTR(&samd_flash_init_obj) },
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{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&samd_flash_readblocks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&samd_flash_writeblocks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&samd_flash_ioctl_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(samd_flash_locals_dict, samd_flash_locals_dict_table);
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MP_DEFINE_CONST_OBJ_TYPE(
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samd_flash_type,
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MP_QSTR_Flash,
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MP_TYPE_FLAG_NONE,
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make_new, samd_flash_make_new,
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locals_dict, &samd_flash_locals_dict
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);
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