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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2025 Damien P. George
*
* 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 "py/obj.h"
#include "py/objarray.h"
#include "py/mperrno.h"
#include "extmod/vfs.h"
#include "drivers/memory/spiflash.h"
#include "flash.h"
#include "qspi.h"
#include "storage.h"
#include "xspi.h"
#if MICROPY_VFS_ROM_IOCTL
#if MICROPY_HW_ROMFS_ENABLE_PART0 && defined(MICROPY_HW_ROMFS_PART0_START)
#define ROMFS0_DYNAMIC (1)
static MP_DEFINE_MEMORYVIEW_OBJ(romfs0_obj, 'B', 0, (uintptr_t)-1, (void *)-1);
#elif MICROPY_HW_ROMFS_ENABLE_PART0 && !defined(MICROPY_HW_ROMFS_PART0_START)
#define ROMFS0_DYNAMIC (0)
extern uint8_t _micropy_hw_romfs_part0_start;
extern uint8_t _micropy_hw_romfs_part0_size;
static const MP_DEFINE_MEMORYVIEW_OBJ(romfs0_obj, 'B', 0, (uintptr_t)&_micropy_hw_romfs_part0_size, (void *)&_micropy_hw_romfs_part0_start);
#endif
#if MICROPY_HW_ROMFS_ENABLE_PART1 && defined(MICROPY_HW_ROMFS_PART1_START)
#define ROMFS1_DYNAMIC (1)
static MP_DEFINE_MEMORYVIEW_OBJ(romfs1_obj, 'B', 0, (uintptr_t)-1, (void *)-1);
#elif MICROPY_HW_ROMFS_ENABLE_PART1 && !defined(MICROPY_HW_ROMFS_PART1_START)
#define ROMFS1_DYNAMIC (0)
extern uint8_t _micropy_hw_romfs_part1_start;
extern uint8_t _micropy_hw_romfs_part1_size;
static const MP_DEFINE_MEMORYVIEW_OBJ(romfs1_obj, 'B', 0, (uintptr_t)&_micropy_hw_romfs_part1_size, (void *)&_micropy_hw_romfs_part1_start);
#endif
static const mp_obj_array_t *romfs_obj_table[] = {
#if MICROPY_HW_ROMFS_ENABLE_PART0
&romfs0_obj,
#endif
#if MICROPY_HW_ROMFS_ENABLE_PART1
&romfs1_obj,
#endif
};
mp_obj_t mp_vfs_rom_ioctl(size_t n_args, const mp_obj_t *args) {
mp_int_t cmd = mp_obj_get_int(args[0]);
if (cmd == MP_VFS_ROM_IOCTL_GET_NUMBER_OF_SEGMENTS) {
return MP_OBJ_NEW_SMALL_INT(MP_ARRAY_SIZE(romfs_obj_table));
}
if (n_args < 2) {
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
mp_int_t romfs_id = mp_obj_get_int(args[1]);
if (!(0 <= romfs_id && romfs_id < MP_ARRAY_SIZE(romfs_obj_table))) {
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
#if ROMFS0_DYNAMIC
if (romfs_id == 0) {
romfs0_obj.items = (void *)MICROPY_HW_ROMFS_PART0_START;
romfs0_obj.len = MICROPY_HW_ROMFS_PART0_SIZE;
}
#endif
#if ROMFS1_DYNAMIC
if (romfs_id == 1) {
romfs1_obj.items = (void *)MICROPY_HW_ROMFS_PART1_START;
romfs1_obj.len = MICROPY_HW_ROMFS_PART1_SIZE;
}
#endif
const mp_obj_array_t *romfs_obj = romfs_obj_table[romfs_id];
uintptr_t romfs_base = (uintptr_t)romfs_obj->items;
uintptr_t romfs_len = romfs_obj->len;
if (cmd == MP_VFS_ROM_IOCTL_GET_SEGMENT) {
// Return the ROMFS memoryview object.
return MP_OBJ_FROM_PTR(romfs_obj);
}
if (cmd == MP_VFS_ROM_IOCTL_WRITE_PREPARE) {
// Erase sectors in given range.
if (n_args < 3) {
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
uint32_t dest = romfs_base;
uint32_t dest_max = dest + mp_obj_get_int(args[2]);
if (dest_max > romfs_base + romfs_len) {
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
#if MICROPY_HW_ROMFS_ENABLE_INTERNAL_FLASH
if (flash_is_valid_addr(dest)) {
while (dest < dest_max) {
int ret = flash_erase(dest);
if (ret < 0) {
return MP_OBJ_NEW_SMALL_INT(ret);
}
uint32_t sector_size = 0;
flash_get_sector_info(dest, NULL, §or_size);
dest += sector_size;
}
return MP_OBJ_NEW_SMALL_INT(16);
}
#endif
#if MICROPY_HW_ROMFS_ENABLE_EXTERNAL_QSPI
if (qspi_is_valid_addr(dest)) {
dest -= QSPI_MAP_ADDR;
dest_max -= QSPI_MAP_ADDR;
while (dest < dest_max) {
int ret = mp_spiflash_erase_block(MICROPY_HW_ROMFS_QSPI_SPIFLASH_OBJ, dest);
if (ret < 0) {
return MP_OBJ_NEW_SMALL_INT(ret);
}
dest += MP_SPIFLASH_ERASE_BLOCK_SIZE;
}
return MP_OBJ_NEW_SMALL_INT(4);
}
#endif
#if MICROPY_HW_ROMFS_ENABLE_EXTERNAL_XSPI
if (xspi_is_valid_addr(&xspi_flash2, dest)) {
dest -= xspi_get_xip_base(&xspi_flash2);
dest_max -= xspi_get_xip_base(&xspi_flash2);
int ret = spi_bdev_eraseblocks_raw(MICROPY_HW_ROMFS_XSPI_SPIBDEV_OBJ, dest / MP_SPIFLASH_ERASE_BLOCK_SIZE, dest_max - dest + MP_SPIFLASH_ERASE_BLOCK_SIZE - 1);
if (ret < 0) {
return MP_OBJ_NEW_SMALL_INT(ret);
}
return MP_OBJ_NEW_SMALL_INT(4);
}
#endif
}
if (cmd == MP_VFS_ROM_IOCTL_WRITE) {
// Write data to flash.
if (n_args < 4) {
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
uint32_t dest = romfs_base + mp_obj_get_int(args[2]);
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[3], &bufinfo, MP_BUFFER_READ);
if (dest + bufinfo.len > romfs_base + romfs_len) {
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
#if MICROPY_HW_ROMFS_ENABLE_INTERNAL_FLASH
if (flash_is_valid_addr(dest)) {
int ret = flash_write(dest, bufinfo.buf, bufinfo.len / 4);
return MP_OBJ_NEW_SMALL_INT(ret);
}
#endif
#if MICROPY_HW_ROMFS_ENABLE_EXTERNAL_QSPI
if (qspi_is_valid_addr(dest)) {
dest -= QSPI_MAP_ADDR;
int ret = mp_spiflash_write(MICROPY_HW_ROMFS_QSPI_SPIFLASH_OBJ, dest, bufinfo.len, bufinfo.buf);
return MP_OBJ_NEW_SMALL_INT(ret);
}
#endif
#if MICROPY_HW_ROMFS_ENABLE_EXTERNAL_XSPI
if (xspi_is_valid_addr(&xspi_flash2, dest)) {
dest -= xspi_get_xip_base(&xspi_flash2);
int ret = spi_bdev_writeblocks_raw(MICROPY_HW_ROMFS_XSPI_SPIBDEV_OBJ, bufinfo.buf, 0, dest, bufinfo.len);
return MP_OBJ_NEW_SMALL_INT(ret);
}
#endif
}
return MP_OBJ_NEW_SMALL_INT(-MP_EINVAL);
}
#endif // MICROPY_VFS_ROM_IOCTL
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