circuitpython/ports/nrf/common-hal/memorymap/AddressRange.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 microDev
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "nrf.h"
#include "shared-bindings/memorymap/AddressRange.h"
#include "py/runtime.h"
#ifdef NRF51_SERIES
size_t allow_ranges[][2] = {
// FLASH
{0x00000000, 0x00040000},
// FICR & UICR ranges
{0x10000000, 0x10002000},
// RAM
{0x20000000, 0x20010000},
// PERIPHERALS
{0x40000000, 0x60000000}
};
#elif defined NRF52_SERIES
size_t allow_ranges[][2] = {
// FLASH
{0x00000000, 0x00100000},
// FICR & UICR ranges
{0x10000000, 0x10002000},
// RAM
{0x20000000, 0x20040000},
// PERIPHERALS
{0x40000000, 0x60000000}
};
#elif defined NRF53_SERIES
size_t allow_ranges[][2] = {
// FLASH
{0x00000000, 0x00100000},
// FICR & UICR ranges
{0x00FF0000, 0x01000000},
// RAM
{0x20000000, 0x20080000},
// PERIPHERALS
{0x40000000, 0x60000000},
{0xE0000000, 0xE0100000}
};
#else
#error "Unsupported nRF variant"
#endif
void common_hal_memorymap_addressrange_construct(memorymap_addressrange_obj_t *self, uint8_t *start_address, size_t length) {
bool allowed = false;
for (size_t i = 0; i < MP_ARRAY_SIZE(allow_ranges); i++) {
uint8_t *allowed_start = (uint8_t *)allow_ranges[i][0];
uint8_t *allowed_end = (uint8_t *)allow_ranges[i][1];
if (allowed_start <= start_address &&
(start_address + length) <= allowed_end) {
allowed = true;
break;
}
}
if (!allowed) {
mp_raise_ValueError(translate("Address range not allowed"));
}
self->start_address = start_address;
self->len = length;
}
uint32_t common_hal_memorymap_addressrange_get_length(const memorymap_addressrange_obj_t *self) {
return self->len;
}
bool common_hal_memorymap_addressrange_set_bytes(const memorymap_addressrange_obj_t *self,
uint32_t start_index, uint8_t *values, uint32_t len) {
uint8_t *address = self->start_address + start_index;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
if (len == 1) {
*((uint8_t *)address) = values[0];
} else if (len == sizeof(uint16_t) && (((size_t)address) % sizeof(uint16_t)) == 0) {
*((uint16_t *)address) = ((uint16_t *)values)[0];
} else if (len == sizeof(uint32_t) && (((size_t)address) % sizeof(uint32_t)) == 0) {
*((uint32_t *)address) = ((uint32_t *)values)[0];
} else if (len == sizeof(uint64_t) && (((size_t)address) % sizeof(uint64_t)) == 0) {
*((uint64_t *)address) = ((uint64_t *)values)[0];
} else {
memcpy(address, values, len);
}
#pragma GCC diagnostic pop
return true;
}
void common_hal_memorymap_addressrange_get_bytes(const memorymap_addressrange_obj_t *self,
uint32_t start_index, uint32_t len, uint8_t *values) {
uint8_t *address = self->start_address + start_index;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
if (len == 1) {
values[0] = *((uint8_t *)address);
} else if (len == sizeof(uint16_t) && (((size_t)address) % sizeof(uint16_t)) == 0) {
((uint16_t *)values)[0] = *((uint16_t *)address);
} else if (len == sizeof(uint32_t) && (((size_t)address) % sizeof(uint32_t)) == 0) {
((uint32_t *)values)[0] = *((uint32_t *)address);
} else if (len == sizeof(uint64_t) && (((size_t)address) % sizeof(uint64_t)) == 0) {
((uint64_t *)values)[0] = *((uint64_t *)address);
} else {
memcpy(values, address, len);
}
#pragma GCC diagnostic pop
}