39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
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/*
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* Copyright (c) 2018 Savoir-Faire Linux.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __SPI_NOR_H__
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#define __SPI_NOR_H__
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#include <misc/util.h>
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#define SPI_NOR_MAX_ID_LEN 3
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struct spi_nor_config {
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u8_t id[SPI_NOR_MAX_ID_LEN];
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u32_t page_size;
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u32_t sector_size;
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u32_t n_sectors;
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};
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/* Status register bits */
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#define SPI_NOR_WIP_BIT BIT(0) /* Write in progress */
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#define SPI_NOR_WEL_BIT BIT(1) /* Write enable latch */
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/* Flash opcodes */
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#define SPI_NOR_CMD_WRSR 0x01 /* Write status register */
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#define SPI_NOR_CMD_RDSR 0x05 /* Read status register */
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#define SPI_NOR_CMD_READ 0x03 /* Read data */
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#define SPI_NOR_CMD_WREN 0x06 /* Write enable */
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#define SPI_NOR_CMD_WRDI 0x04 /* Write disable */
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#define SPI_NOR_CMD_PP 0x02 /* Page program */
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#define SPI_NOR_CMD_SE 0x20 /* Sector erase */
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#define SPI_NOR_CMD_BE_32K 0x52 /* Block erase 32KB */
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#define SPI_NOR_CMD_BE 0xD8 /* Block erase */
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#define SPI_NOR_CMD_CE 0xC7 /* Chip erase */
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#define SPI_NOR_CMD_RDID 0x9F /* Read JEDEC ID */
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#endif /*__SPI_NOR_H__*/
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