stmicro.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <commonlib/helpers.h>
#include <spi_flash.h>
#include <spi-generic.h>
 
#include "spi_flash_internal.h"
 
/* M25Pxx-specific commands */
#define CMD_M25PXX_WREN         0x06    /* Write Enable */
#define CMD_M25PXX_WRDI         0x04    /* Write Disable */
#define CMD_M25PXX_RDSR         0x05    /* Read Status Register */
#define CMD_M25PXX_WRSR         0x01    /* Write Status Register */
#define CMD_M25PXX_READ         0x03    /* Read Data Bytes */
#define CMD_M25PXX_FAST_READ    0x0b    /* Read Data Bytes at Higher Speed */
#define CMD_M25PXX_PP           0x02    /* Page Program */
#define CMD_M25PXX_SSE          0x20    /* Subsector Erase */
#define CMD_M25PXX_SE           0xd8    /* Sector Erase */
#define CMD_M25PXX_BE           0xc7    /* Bulk Erase */
#define CMD_M25PXX_DP           0xb9    /* Deep Power-down */
#define CMD_M25PXX_RES          0xab    /* Release from DP, and Read Signature */
 
/*
 * Device ID = (memory_type << 8) + memory_capacity
 */
#define STM_ID_M25P10           0x2011
#define STM_ID_M25P20           0x2012
#define STM_ID_M25P40           0x2013
#define STM_ID_M25P80           0x2014
#define STM_ID_M25P16           0x2015
#define STM_ID_M25P32           0x2016
#define STM_ID_M25P64           0x2017
#define STM_ID_M25P128          0x2018
#define STM_ID_M25PX80          0x7114
#define STM_ID_M25PX16          0x7115
#define STM_ID_M25PX32          0x7116
#define STM_ID_M25PX64          0x7117
#define STM_ID_M25PE80          0x8014
#define STM_ID_M25PE16          0x8015
#define STM_ID_M25PE32          0x8016
#define STM_ID_M25PE64          0x8017
#define STM_ID_N25Q016__3E      0xba15
#define STM_ID_N25Q032__3E      0xba16
#define STM_ID_N25Q064__3E      0xba17
#define STM_ID_N25Q128__3E      0xba18
#define STM_ID_N25Q256__3E      0xba19
#define STM_ID_N25Q016__1E      0xbb15
#define STM_ID_N25Q032__1E      0xbb16
#define STM_ID_N25Q064__1E      0xbb17
#define STM_ID_N25Q128__1E      0xbb18
#define STM_ID_N25Q256__1E      0xbb19
 
static const struct spi_flash_part_id flash_table_se32k[] = {
        {
                /* M25P10 */
                .id[0] = STM_ID_M25P10,
                .nr_sectors_shift = 2,
        },
};
 
static const struct spi_flash_part_id flash_table_se64k[] = {
        {
                /* M25P16 */
                .id[0] = STM_ID_M25P16,
                .nr_sectors_shift = 5,
        },
        {
                /* M25P20 */
                .id[0] = STM_ID_M25P20,
                .nr_sectors_shift = 2,
        },
        {
                /* M25P32 */
                .id[0] = STM_ID_M25P32,
                .nr_sectors_shift = 6,
        },
        {
                /* M25P40 */
                .id[0] = STM_ID_M25P40,
                .nr_sectors_shift = 3,
        },
        {
                /* M25P64 */
                .id[0] = STM_ID_M25P64,
                .nr_sectors_shift = 7,
        },
        {
                /* M25P80 */
                .id[0] = STM_ID_M25P80,
                .nr_sectors_shift = 4,
        },
        {
                /* M25PX80 */
                .id[0] = STM_ID_M25PX80,
                .nr_sectors_shift = 4,
        },
        {
                /* M25PX16 */
                .id[0] = STM_ID_M25PX16,
                .nr_sectors_shift = 5,
        },
        {
                /* M25PX32 */
                .id[0] = STM_ID_M25PX32,
                .nr_sectors_shift = 6,
        },
        {
                /* M25PX64 */
                .id[0] = STM_ID_M25PX64,
                .nr_sectors_shift = 7,
        },
        {
                /* M25PE80 */
                .id[0] = STM_ID_M25PE80,
                .nr_sectors_shift = 4,
        },
        {
                /* M25PE16 */
                .id[0] = STM_ID_M25PE16,
                .nr_sectors_shift = 5,
        },
        {
                /* M25PE32 */
                .id[0] = STM_ID_M25PE32,
                .nr_sectors_shift = 6,
        },
        {
                /* M25PE64 */
                .id[0] = STM_ID_M25PE64,
                .nr_sectors_shift = 7,
        },
};
 
static const struct spi_flash_part_id flash_table_se256k[] = {
        {
                /* M25P128 */
                .id[0] = STM_ID_M25P128,
                .nr_sectors_shift = 6,
        },
};
 
static const struct spi_flash_part_id flash_table_sse[] = {
        {
                /* N25Q016..3E */
                .id[0] = STM_ID_N25Q016__3E,
                .nr_sectors_shift = 9,
        },
        {
                /* N25Q032..3E */
                .id[0] = STM_ID_N25Q032__3E,
                .nr_sectors_shift = 10,
        },
        {
                /* N25Q064..3E */
                .id[0] = STM_ID_N25Q064__3E,
                .nr_sectors_shift = 11,
        },
        {
                /* N25Q128..3E */
                .id[0] = STM_ID_N25Q128__3E,
                .nr_sectors_shift = 12,
        },
        {
                /* N25Q256..3E */
                .id[0] = STM_ID_N25Q256__3E,
                .nr_sectors_shift = 13,
        },
        {
                /* N25Q016..1E */
                .id[0] = STM_ID_N25Q016__1E,
                .nr_sectors_shift = 9,
        },
        {
                /* N25Q032..1E */
                .id[0] = STM_ID_N25Q032__1E,
                .nr_sectors_shift = 10,
        },
        {
                /* N25Q064..1E */
                .id[0] = STM_ID_N25Q064__1E,
                .nr_sectors_shift = 11,
        },
        {
                /* N25Q128..1E */
                .id[0] = STM_ID_N25Q128__1E,
                .nr_sectors_shift = 12,
        },
        {
                /* N25Q256..1E */
                .id[0] = STM_ID_N25Q256__1E,
                .nr_sectors_shift = 13,
        },
};
 
int stmicro_release_deep_sleep_identify(const struct spi_slave *spi, u8 *idcode)
{
        if (spi_flash_cmd(spi, CMD_M25PXX_RES, idcode, 4))
                return -1;
 
        /* Assuming ST parts identify with 0x1X to release from deep
           power down and read electronic signature. */
        if ((idcode[3] & 0xf0) != 0x10)
                return -1;
 
        /* Fix up the idcode to mimic rdid jedec instruction. */
        idcode[0] = 0x20;
        idcode[1] = 0x20;
        idcode[2] = idcode[3] + 1;
 
        return 0;
}
 
const struct spi_flash_vendor_info spi_flash_stmicro1_vi = {
        .id = VENDOR_ID_STMICRO,
        .page_size_shift = 8,
        .sector_size_kib_shift = 5,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table_se32k,
        .nr_part_ids = ARRAY_SIZE(flash_table_se32k),
        .desc = &spi_flash_pp_0xd8_sector_desc,
};
 
const struct spi_flash_vendor_info spi_flash_stmicro2_vi = {
        .id = VENDOR_ID_STMICRO,
        .page_size_shift = 8,
        .sector_size_kib_shift = 6,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table_se64k,
        .nr_part_ids = ARRAY_SIZE(flash_table_se64k),
        .desc = &spi_flash_pp_0xd8_sector_desc,
};
 
const struct spi_flash_vendor_info spi_flash_stmicro3_vi = {
        .id = VENDOR_ID_STMICRO,
        .page_size_shift = 8,
        .sector_size_kib_shift = 8,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table_se256k,
        .nr_part_ids = ARRAY_SIZE(flash_table_se256k),
        .desc = &spi_flash_pp_0xd8_sector_desc,
};
 
const struct spi_flash_vendor_info spi_flash_stmicro4_vi = {
        .id = VENDOR_ID_STMICRO,
        .page_size_shift = 8,
        .sector_size_kib_shift = 2,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table_sse,
        .nr_part_ids = ARRAY_SIZE(flash_table_sse),
        .desc = &spi_flash_pp_0x20_sector_desc,
};