mpconfigport.h

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 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.
 */

// Options controlling how MicroPython is built, overriding defaults in py/mpconfig.h

// Board specific definitions
#include "mpconfigboard.h"
#include "fsl_common.h"
#include "lib/nxp_driver/sdk/CMSIS/Include/core_cm7.h"

uint32_t trng_random_u32(void);

// Config level
#define MICROPY_CONFIG_ROM_LEVEL (MICROPY_CONFIG_ROM_LEVEL_FULL_FEATURES)

// Memory allocation policies
#define MICROPY_GC_STACK_ENTRY_TYPE         uint16_t
#define MICROPY_ALLOC_PARSE_CHUNK_INIT      (32)
#define MICROPY_ALLOC_PATH_MAX              (256)

// MicroPython emitters
#define MICROPY_PERSISTENT_CODE_LOAD        (1)
#define MICROPY_EMIT_THUMB                  (1)
#define MICROPY_EMIT_INLINE_THUMB           (1)

// Optimisations

// Python internal features
#define MICROPY_TRACKED_ALLOC               (MICROPY_SSL_MBEDTLS)
#define MICROPY_READER_VFS                  (1)
#define MICROPY_ENABLE_GC                   (1)
#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF  (1)
#define MICROPY_LONGINT_IMPL                (MICROPY_LONGINT_IMPL_MPZ)
#define MICROPY_SCHEDULER_DEPTH             (8)
#define MICROPY_VFS                         (1)
#define MICROPY_MODULE_FROZEN_MPY           (1)
#define MICROPY_QSTR_EXTRA_POOL             mp_qstr_frozen_const_pool

// Control over Python builtins
#define MICROPY_PY_BUILTINS_HELP_TEXT       mimxrt_help_text
#define MICROPY_PY_SYS_PLATFORM             "mimxrt"

// Extended modules
#define MICROPY_EPOCH_IS_1970               (1)
#define MICROPY_PY_USSL_FINALISER           (MICROPY_PY_USSL)
#define MICROPY_PY_UTIME_MP_HAL             (1)
#define MICROPY_PY_UOS_INCLUDEFILE          "ports/mimxrt/moduos.c"
#define MICROPY_PY_OS_DUPTERM               (3)
#define MICROPY_PY_UOS_DUPTERM_NOTIFY       (1)
#define MICROPY_PY_UOS_UNAME                (1)
#define MICROPY_PY_URANDOM_SEED_INIT_FUNC   (trng_random_u32())
#define MICROPY_PY_MACHINE                  (1)
#define MICROPY_PY_MACHINE_PIN_MAKE_NEW     mp_pin_make_new
#define MICROPY_PY_MACHINE_BITSTREAM        (1)
#define MICROPY_PY_MACHINE_PULSE            (1)
#define MICROPY_PY_MACHINE_PWM              (1)
#define MICROPY_PY_MACHINE_PWM_INIT         (1)
#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS  (1)
#define MICROPY_PY_MACHINE_PWM_INCLUDEFILE  "ports/mimxrt/machine_pwm.c"
#define MICROPY_PY_MACHINE_I2C              (1)
#ifndef MICROPY_PY_MACHINE_I2S
#define MICROPY_PY_MACHINE_I2S              (0)
#endif
#define MICROPY_PY_MACHINE_SOFTI2C          (1)
#define MICROPY_PY_MACHINE_SPI              (1)
#define MICROPY_PY_MACHINE_SOFTSPI          (1)
#define MICROPY_PY_MACHINE_TIMER            (1)
#define MICROPY_PY_ONEWIRE                  (1)
#define MICROPY_PY_UPLATFORM                (1)

// fatfs configuration used in ffconf.h
#define MICROPY_FATFS_ENABLE_LFN            (1)
#define MICROPY_FATFS_RPATH                 (2)
#define MICROPY_FATFS_MAX_SS                (4096)
#define MICROPY_FATFS_LFN_CODE_PAGE         437 /* 1=SFN/ANSI 437=LFN/U.S.(OEM) */

// If MICROPY_PY_LWIP is defined, add network support
#if MICROPY_PY_LWIP

#define MICROPY_PY_NETWORK                  (1)
#define MICROPY_PY_USOCKET                  (1)
#define MICROPY_PY_UWEBSOCKET               (1)
#define MICROPY_PY_WEBREPL                  (1)
#define MICROPY_PY_UHASHLIB_SHA1            (1)
#define MICROPY_PY_LWIP_SOCK_RAW            (1)
#define MICROPY_HW_ETH_MDC                  (1)

// Prevent the "LWIP task" from running.
#define MICROPY_PY_LWIP_ENTER   MICROPY_PY_PENDSV_ENTER
#define MICROPY_PY_LWIP_REENTER MICROPY_PY_PENDSV_REENTER
#define MICROPY_PY_LWIP_EXIT    MICROPY_PY_PENDSV_EXIT

#endif

// For regular code that wants to prevent "background tasks" from running.
// These background tasks (LWIP, Bluetooth) run in PENDSV context.
// TODO: Check for the settings of the STM32 port in irq.h
#define NVIC_PRIORITYGROUP_4    ((uint32_t)0x00000003)
#define IRQ_PRI_PENDSV          NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 15, 0)
#define MICROPY_PY_PENDSV_ENTER   uint32_t atomic_state = raise_irq_pri(IRQ_PRI_PENDSV);
#define MICROPY_PY_PENDSV_REENTER atomic_state = raise_irq_pri(IRQ_PRI_PENDSV);
#define MICROPY_PY_PENDSV_EXIT    restore_irq_pri(atomic_state);

// Hooks to add builtins

__attribute__((always_inline)) static inline void enable_irq(uint32_t state) {
    __set_PRIMASK(state);
}

__attribute__((always_inline)) static inline uint32_t disable_irq(void) {
    uint32_t state = __get_PRIMASK();
    __disable_irq();
    return state;
}

static inline uint32_t raise_irq_pri(uint32_t pri) {
    uint32_t basepri = __get_BASEPRI();
    // If non-zero, the processor does not process any exception with a
    // priority value greater than or equal to BASEPRI.
    // When writing to BASEPRI_MAX the write goes to BASEPRI only if either:
    //   - Rn is non-zero and the current BASEPRI value is 0
    //   - Rn is non-zero and less than the current BASEPRI value
    pri <<= (8 - __NVIC_PRIO_BITS);
    __ASM volatile ("msr basepri_max, %0" : : "r" (pri) : "memory");
    return basepri;
}

// "basepri" should be the value returned from raise_irq_pri
static inline void restore_irq_pri(uint32_t basepri) {
    __set_BASEPRI(basepri);
}

#define MICROPY_BEGIN_ATOMIC_SECTION()     disable_irq()
#define MICROPY_END_ATOMIC_SECTION(state)  enable_irq(state)

#if defined(MICROPY_HW_ETH_MDC)
extern const struct _mp_obj_type_t network_lan_type;
#define MICROPY_HW_NIC_ETH                  { MP_ROM_QSTR(MP_QSTR_LAN), MP_ROM_PTR(&network_lan_type) },
#else
#define MICROPY_HW_NIC_ETH
#endif

#ifndef MICROPY_BOARD_NETWORK_INTERFACES
#define MICROPY_BOARD_NETWORK_INTERFACES
#endif

#define MICROPY_PORT_NETWORK_INTERFACES \
    MICROPY_HW_NIC_ETH  \
    MICROPY_BOARD_NETWORK_INTERFACES \

#define MICROPY_HW_PIT_NUM_CHANNELS 3

#ifndef MICROPY_BOARD_ROOT_POINTERS
#define MICROPY_BOARD_ROOT_POINTERS
#endif

#define MP_STATE_PORT MP_STATE_VM

// Miscellaneous settings
#ifndef  MICROPY_EVENT_POLL_HOOK
#define MICROPY_EVENT_POLL_HOOK \
    do { \
        extern void mp_handle_pending(bool); \
        mp_handle_pending(true); \
        __WFE(); \
    } while (0);
#endif

#define MICROPY_MAKE_POINTER_CALLABLE(p) ((void *)((mp_uint_t)(p) | 1))

#define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) \
    (SCB_CleanInvalidateDCache_by_Addr((uint32_t *)((uint32_t)addr & ~0x1f), \
    ((uint32_t)((uint8_t *)addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f)))

#define MP_HAL_CLEAN_DCACHE(addr, size) \
    (SCB_CleanDCache_by_Addr((uint32_t *)((uint32_t)addr & ~0x1f), \
    ((uint32_t)((uint8_t *)addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f)))

#define MP_SSIZE_MAX (0x7fffffff)
typedef int mp_int_t; // must be pointer size
typedef unsigned mp_uint_t; // must be pointer size
typedef long mp_off_t;

// Need an implementation of the log2 function which is not a macro.
#define MP_NEED_LOG2 (1)

// Need to provide a declaration/definition of alloca()
#include <alloca.h>