atmel.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_AT25_WREN           0x06    /* Write Enable */
#define CMD_AT25_WRDI           0x04    /* Write Disable */
#define CMD_AT25_RDSR           0x05    /* Read Status Register */
#define CMD_AT25_WRSR           0x01    /* Write Status Register */
#define CMD_AT25_READ           0x03    /* Read Data Bytes */
#define CMD_AT25_FAST_READ      0x0b    /* Read Data Bytes at Higher Speed */
#define CMD_AT25_PP                     0x02    /* Page Program */
#define CMD_AT25_SE                     0x20    /* Sector (4K) Erase */
#define CMD_AT25_BE                     0xd8    /* Block (64K) Erase */
#define CMD_AT25_CE                     0xc7    /* Chip Erase */
#define CMD_AT25_DP                     0xb9    /* Deep Power-down */
#define CMD_AT25_RES            0xab    /* Release from DP, and Read Signature */
 
static const struct spi_flash_part_id flash_table[] = {
        {
                /* AT25X16 */
                .id[0]                  = 0x3015,
                .nr_sectors_shift       = 9,
        },
        {
                /* AT25DF32 */
                .id[0]                  = 0x47,
                .nr_sectors_shift       = 10,
        },
        {
                /* AT25X64 */
                .id[0]                  = 0x3017,
                .nr_sectors_shift       = 11,
        },
        {
                /* AT25Q16 */
                .id[0]                  = 0x4015,
                .nr_sectors_shift       = 9,
        },
        {
                /* AT25Q32 */
                .id[0]                  = 0x4016,
                .nr_sectors_shift       = 10,
        },
        {
                /* AT25Q64 */
                .id[0]                  = 0x4017,
                .nr_sectors_shift       = 11,
        },
        {
                /* AT25Q128 */
                .id[0]                  = 0x4018,
                .nr_sectors_shift       = 12,
        },
};
 
const struct spi_flash_vendor_info spi_flash_atmel_vi = {
        .id = VENDOR_ID_ATMEL,
        .page_size_shift = 8,
        .sector_size_kib_shift = 2,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table,
        .nr_part_ids = ARRAY_SIZE(flash_table),
        .desc = &spi_flash_pp_0x20_sector_desc,
};