236 lines
9.8 KiB
C
236 lines
9.8 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 <string.h>
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#include "py/runtime.h"
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#include "py/mperrno.h"
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#include "extmod/vfs.h"
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#include "modesp32.h"
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#include "esp_ota_ops.h"
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// esp_partition_read and esp_partition_write can operate on arbitrary bytes
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// but esp_partition_erase_range operates on 4k blocks. But to make a partition
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// implement the standard block protocol all operations are done on 4k blocks.
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#define BLOCK_SIZE_BYTES (4096)
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enum {
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ESP32_PARTITION_BOOT,
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ESP32_PARTITION_RUNNING,
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};
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typedef struct _esp32_partition_obj_t {
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mp_obj_base_t base;
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const esp_partition_t *part;
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} esp32_partition_obj_t;
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static inline void check_esp_err(esp_err_t e) {
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if (e != ESP_OK) {
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mp_raise_OSError(-e);
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}
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}
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STATIC esp32_partition_obj_t *esp32_partition_new(const esp_partition_t *part) {
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if (part == NULL) {
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mp_raise_OSError(MP_ENOENT);
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}
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esp32_partition_obj_t *self = m_new_obj(esp32_partition_obj_t);
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self->base.type = &esp32_partition_type;
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self->part = part;
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return self;
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}
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STATIC void esp32_partition_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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esp32_partition_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_printf(print, "<Partition type=%u, subtype=%u, address=%u, size=%u, label=%s, encrypted=%u>",
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self->part->type, self->part->subtype,
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self->part->address, self->part->size,
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&self->part->label[0], self->part->encrypted
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);
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}
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STATIC mp_obj_t esp32_partition_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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// Check args
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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// Get requested partition
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const esp_partition_t *part;
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if (mp_obj_is_int(all_args[0])) {
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// Integer given, get that particular partition
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switch (mp_obj_get_int(all_args[0])) {
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case ESP32_PARTITION_BOOT:
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part = esp_ota_get_boot_partition();
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break;
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case ESP32_PARTITION_RUNNING:
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part = esp_ota_get_running_partition();
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break;
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default:
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mp_raise_ValueError(NULL);
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}
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} else {
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// String given, search for partition with that label
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const char *label = mp_obj_str_get_str(all_args[0]);
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part = esp_partition_find_first(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_ANY, label);
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if (part == NULL) {
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part = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, label);
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}
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}
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// Return new object
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return MP_OBJ_FROM_PTR(esp32_partition_new(part));
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}
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STATIC mp_obj_t esp32_partition_find(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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// Parse args
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enum { ARG_type, ARG_subtype, ARG_label };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_type, MP_ARG_INT, {.u_int = ESP_PARTITION_TYPE_APP} },
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{ MP_QSTR_subtype, MP_ARG_INT, {.u_int = ESP_PARTITION_SUBTYPE_ANY} },
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{ MP_QSTR_label, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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// Get optional label string
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const char *label = NULL;
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if (args[ARG_label].u_obj != mp_const_none) {
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label = mp_obj_str_get_str(args[ARG_label].u_obj);
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}
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// Build list of matching partitions
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mp_obj_t list = mp_obj_new_list(0, NULL);
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esp_partition_iterator_t iter = esp_partition_find(args[ARG_type].u_int, args[ARG_subtype].u_int, label);
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while (iter != NULL) {
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mp_obj_list_append(list, MP_OBJ_FROM_PTR(esp32_partition_new(esp_partition_get(iter))));
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iter = esp_partition_next(iter);
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}
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esp_partition_iterator_release(iter);
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return list;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp32_partition_find_fun_obj, 0, esp32_partition_find);
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STATIC MP_DEFINE_CONST_STATICMETHOD_OBJ(esp32_partition_find_obj, MP_ROM_PTR(&esp32_partition_find_fun_obj));
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STATIC mp_obj_t esp32_partition_info(mp_obj_t self_in) {
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esp32_partition_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_obj_t tuple[] = {
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MP_OBJ_NEW_SMALL_INT(self->part->type),
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MP_OBJ_NEW_SMALL_INT(self->part->subtype),
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mp_obj_new_int_from_uint(self->part->address),
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mp_obj_new_int_from_uint(self->part->size),
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mp_obj_new_str(&self->part->label[0], strlen(&self->part->label[0])),
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mp_obj_new_bool(self->part->encrypted),
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};
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return mp_obj_new_tuple(6, tuple);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp32_partition_info_obj, esp32_partition_info);
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STATIC mp_obj_t esp32_partition_readblocks(size_t n_args, const mp_obj_t *args) {
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esp32_partition_obj_t *self = MP_OBJ_TO_PTR(args[0]);
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uint32_t offset = mp_obj_get_int(args[1]) * BLOCK_SIZE_BYTES;
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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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check_esp_err(esp_partition_read(self->part, 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(esp32_partition_readblocks_obj, 3, 4, esp32_partition_readblocks);
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STATIC mp_obj_t esp32_partition_writeblocks(size_t n_args, const mp_obj_t *args) {
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esp32_partition_obj_t *self = MP_OBJ_TO_PTR(args[0]);
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uint32_t offset = mp_obj_get_int(args[1]) * BLOCK_SIZE_BYTES;
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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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check_esp_err(esp_partition_erase_range(self->part, offset, bufinfo.len));
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} else {
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offset += mp_obj_get_int(args[3]);
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}
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check_esp_err(esp_partition_write(self->part, 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(esp32_partition_writeblocks_obj, 3, 4, esp32_partition_writeblocks);
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STATIC mp_obj_t esp32_partition_ioctl(mp_obj_t self_in, mp_obj_t cmd_in, mp_obj_t arg_in) {
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esp32_partition_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: return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_DEINIT: return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_SYNC: return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_BLOCK_COUNT: return MP_OBJ_NEW_SMALL_INT(self->part->size / BLOCK_SIZE_BYTES);
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case MP_BLOCKDEV_IOCTL_BLOCK_SIZE: return MP_OBJ_NEW_SMALL_INT(BLOCK_SIZE_BYTES);
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case MP_BLOCKDEV_IOCTL_BLOCK_ERASE: {
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uint32_t offset = mp_obj_get_int(arg_in) * BLOCK_SIZE_BYTES;
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check_esp_err(esp_partition_erase_range(self->part, offset, BLOCK_SIZE_BYTES));
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return MP_OBJ_NEW_SMALL_INT(0);
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}
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default: return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(esp32_partition_ioctl_obj, esp32_partition_ioctl);
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STATIC mp_obj_t esp32_partition_set_boot(mp_obj_t self_in) {
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esp32_partition_obj_t *self = MP_OBJ_TO_PTR(self_in);
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esp_ota_set_boot_partition(self->part);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp32_partition_set_boot_obj, esp32_partition_set_boot);
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STATIC mp_obj_t esp32_partition_get_next_update(mp_obj_t self_in) {
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esp32_partition_obj_t *self = MP_OBJ_TO_PTR(self_in);
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return MP_OBJ_FROM_PTR(esp32_partition_new(esp_ota_get_next_update_partition(self->part)));
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp32_partition_get_next_update_obj, esp32_partition_get_next_update);
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STATIC const mp_rom_map_elem_t esp32_partition_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_find), MP_ROM_PTR(&esp32_partition_find_obj) },
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{ MP_ROM_QSTR(MP_QSTR_info), MP_ROM_PTR(&esp32_partition_info_obj) },
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{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&esp32_partition_readblocks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&esp32_partition_writeblocks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&esp32_partition_ioctl_obj) },
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{ MP_ROM_QSTR(MP_QSTR_set_boot), MP_ROM_PTR(&esp32_partition_set_boot_obj) },
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{ MP_ROM_QSTR(MP_QSTR_get_next_update), MP_ROM_PTR(&esp32_partition_get_next_update_obj) },
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{ MP_ROM_QSTR(MP_QSTR_BOOT), MP_ROM_INT(ESP32_PARTITION_BOOT) },
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{ MP_ROM_QSTR(MP_QSTR_RUNNING), MP_ROM_INT(ESP32_PARTITION_RUNNING) },
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{ MP_ROM_QSTR(MP_QSTR_TYPE_APP), MP_ROM_INT(ESP_PARTITION_TYPE_APP) },
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{ MP_ROM_QSTR(MP_QSTR_TYPE_DATA), MP_ROM_INT(ESP_PARTITION_TYPE_DATA) },
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};
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STATIC MP_DEFINE_CONST_DICT(esp32_partition_locals_dict, esp32_partition_locals_dict_table);
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const mp_obj_type_t esp32_partition_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Partition,
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.print = esp32_partition_print,
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.make_new = esp32_partition_make_new,
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.locals_dict = (mp_obj_dict_t*)&esp32_partition_locals_dict,
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};
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