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https://github.com/zephyrproject-rtos/zephyr
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810920f8d5
Use the new SFDP infrastructure to read the supported erase type sizes and commands from the Basic Flash Parameters block. This removes the need for explicit reference to most block sizes from this driver. We're also seeing devices where the page size is not 256 bytes. Accommodate them. Signed-off-by: Peter A. Bigot <pab@pabigot.com>
44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
/*
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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 <sys/util.h>
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#define SPI_NOR_MAX_ID_LEN 3
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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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#define SPI_NOR_CMD_ULBPR 0x98 /* Global Block Protection Unlock */
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#define SPI_NOR_CMD_DPD 0xB9 /* Deep Power Down */
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#define SPI_NOR_CMD_RDPD 0xAB /* Release from Deep Power Down */
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/* Page, sector, and block size are standard, not configurable. */
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#define SPI_NOR_PAGE_SIZE 0x0100U
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#define SPI_NOR_SECTOR_SIZE 0x1000U
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#define SPI_NOR_BLOCK_SIZE 0x10000U
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/* Test whether offset is aligned to a given number of bits. */
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#define SPI_NOR_IS_ALIGNED(_ofs, _bits) (((_ofs) & BIT_MASK(_bits)) == 0)
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#define SPI_NOR_IS_SECTOR_ALIGNED(_ofs) SPI_NOR_IS_ALIGNED(_ofs, 12)
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#endif /*__SPI_NOR_H__*/
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