flash.h

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/*
 * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef _HARDWARE_FLASH_H
#define _HARDWARE_FLASH_H
 
#include "pico.h"

 
// PICO_CONFIG: PARAM_ASSERTIONS_ENABLED_HARDWARE_FLASH, Enable/disable assertions in the hardware_flash module, type=bool, default=0, group=hardware_flash
#ifndef PARAM_ASSERTIONS_ENABLED_HARDWARE_FLASH
#ifdef PARAM_ASSERTIONS_ENABLED_FLASH // backwards compatibility with SDK < 2.0.0
#define PARAM_ASSERTIONS_ENABLED_HARDWARE_FLASH PARAM_ASSERTIONS_ENABLED_FLASH
#else
#define PARAM_ASSERTIONS_ENABLED_HARDWARE_FLASH 0
#endif
#endif
#define FLASH_PAGE_SIZE (1u << 8)
#define FLASH_SECTOR_SIZE (1u << 12)
#define FLASH_BLOCK_SIZE (1u << 16)
 
#ifndef FLASH_UNIQUE_ID_SIZE_BYTES
#define FLASH_UNIQUE_ID_SIZE_BYTES 8
#endif
 
// PICO_CONFIG: PICO_FLASH_SIZE_BYTES, size of primary flash in bytes, type=int, default=Usually provided via board header, group=hardware_flash
 
#ifdef __cplusplus
extern "C" {
#endif

void flash_start_xip(void);
 

void flash_range_erase(uint32_t flash_offs, size_t count);

 
void flash_range_program(uint32_t flash_offs, const uint8_t *data, size_t count);

void flash_get_unique_id(uint8_t *id_out);

void flash_do_cmd(const uint8_t *txbuf, uint8_t *rxbuf, size_t count);
 
void flash_flush_cache(void);
 
#if !PICO_RP2040
typedef enum {
    FLASH_DEVINFO_SIZE_NONE = 0x0,
    FLASH_DEVINFO_SIZE_8K = 0x1,
    FLASH_DEVINFO_SIZE_16K = 0x2,
    FLASH_DEVINFO_SIZE_32K = 0x3,
    FLASH_DEVINFO_SIZE_64K = 0x4,
    FLASH_DEVINFO_SIZE_128K = 0x5,
    FLASH_DEVINFO_SIZE_256K = 0x6,
    FLASH_DEVINFO_SIZE_512K = 0x7,
    FLASH_DEVINFO_SIZE_1M = 0x8,
    FLASH_DEVINFO_SIZE_2M = 0x9,
    FLASH_DEVINFO_SIZE_4M = 0xa,
    FLASH_DEVINFO_SIZE_8M = 0xb,
    FLASH_DEVINFO_SIZE_16M = 0xc,
    FLASH_DEVINFO_SIZE_MAX = 0xc
} flash_devinfo_size_t;

static inline uint32_t flash_devinfo_size_to_bytes(flash_devinfo_size_t size) {
    if (size == FLASH_DEVINFO_SIZE_NONE) {
        return 0;
    } else {
        return 4096u << (uint)size;
    }
}

static inline flash_devinfo_size_t flash_devinfo_bytes_to_size(uint32_t bytes) {
    // Must be zero or a power of two
    valid_params_if(HARDWARE_FLASH, (bytes & (bytes - 1)) == 0u);
    uint sectors = bytes / 4096u;
    if (sectors <= 1u) {
        return FLASH_DEVINFO_SIZE_NONE;
    } else {
        return (flash_devinfo_size_t) __builtin_ctz(sectors);
    }
}

flash_devinfo_size_t flash_devinfo_get_cs_size(uint cs);

void flash_devinfo_set_cs_size(uint cs, flash_devinfo_size_t size);

bool flash_devinfo_get_d8h_erase_supported(void);

void flash_devinfo_set_d8h_erase_supported(bool supported);

uint flash_devinfo_get_cs_gpio(uint cs);

void flash_devinfo_set_cs_gpio(uint cs, uint gpio);
 
#endif // !PICO_RP2040
 
#ifdef __cplusplus
}
#endif
 
#endif