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https://github.com/brain-hackers/u-boot-brain
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c3c016cf75
Many SPI flashes have protection bits (BP2, BP1 and BP0) in the status register that can protect selected regions of the SPI NOR. Take these bits into account when performing erase operations, making sure that the protected areas are skipped. Tested on a mx6qsabresd: => sf probe SF: Detected M25P32 with page size 256 Bytes, erase size 64 KiB, total 4 MiB => sf protect lock 0x3f0000 0x10000 => sf erase 0x3f0000 0x10000 offset 0x3f0000 is protected and cannot be erased SF: 65536 bytes @ 0x3f0000 Erased: ERROR => sf protect unlock 0x3f0000 0x10000 => sf erase 0x3f0000 0x10000 SF: 65536 bytes @ 0x3f0000 Erased: OK Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> [re-worked to fit the lock common to dm and non-dm] Signed-off-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Jagan Teki <jteki@openedev.com>
248 lines
7.0 KiB
C
248 lines
7.0 KiB
C
/*
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* SPI flash internal definitions
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*
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* Copyright (C) 2008 Atmel Corporation
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* Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SF_INTERNAL_H_
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#define _SF_INTERNAL_H_
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#include <linux/types.h>
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#include <linux/compiler.h>
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/* Dual SPI flash memories - see SPI_COMM_DUAL_... */
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enum spi_dual_flash {
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SF_SINGLE_FLASH = 0,
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SF_DUAL_STACKED_FLASH = 1 << 0,
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SF_DUAL_PARALLEL_FLASH = 1 << 1,
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};
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/* Enum list - Full read commands */
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enum spi_read_cmds {
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ARRAY_SLOW = 1 << 0,
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ARRAY_FAST = 1 << 1,
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DUAL_OUTPUT_FAST = 1 << 2,
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DUAL_IO_FAST = 1 << 3,
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QUAD_OUTPUT_FAST = 1 << 4,
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QUAD_IO_FAST = 1 << 5,
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};
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/* Normal - Extended - Full command set */
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#define RD_NORM (ARRAY_SLOW | ARRAY_FAST)
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#define RD_EXTN (RD_NORM | DUAL_OUTPUT_FAST | DUAL_IO_FAST)
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#define RD_FULL (RD_EXTN | QUAD_OUTPUT_FAST | QUAD_IO_FAST)
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/* sf param flags */
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enum {
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#ifdef CONFIG_SPI_FLASH_USE_4K_SECTORS
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SECT_4K = 1 << 0,
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#else
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SECT_4K = 0 << 0,
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#endif
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SECT_32K = 1 << 1,
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E_FSR = 1 << 2,
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SST_BP = 1 << 3,
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SST_WP = 1 << 4,
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WR_QPP = 1 << 5,
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};
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#define SST_WR (SST_BP | SST_WP)
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enum spi_nor_option_flags {
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SNOR_F_SST_WR = (1 << 0),
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SNOR_F_USE_FSR = (1 << 1),
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};
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#define SPI_FLASH_3B_ADDR_LEN 3
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#define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN)
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#define SPI_FLASH_16MB_BOUN 0x1000000
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/* CFI Manufacture ID's */
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#define SPI_FLASH_CFI_MFR_SPANSION 0x01
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#define SPI_FLASH_CFI_MFR_STMICRO 0x20
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#define SPI_FLASH_CFI_MFR_MACRONIX 0xc2
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#define SPI_FLASH_CFI_MFR_WINBOND 0xef
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/* Erase commands */
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#define CMD_ERASE_4K 0x20
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#define CMD_ERASE_32K 0x52
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#define CMD_ERASE_CHIP 0xc7
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#define CMD_ERASE_64K 0xd8
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/* Write commands */
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#define CMD_WRITE_STATUS 0x01
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#define CMD_PAGE_PROGRAM 0x02
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#define CMD_WRITE_DISABLE 0x04
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#define CMD_READ_STATUS 0x05
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#define CMD_QUAD_PAGE_PROGRAM 0x32
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#define CMD_READ_STATUS1 0x35
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#define CMD_WRITE_ENABLE 0x06
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#define CMD_READ_CONFIG 0x35
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#define CMD_FLAG_STATUS 0x70
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/* Read commands */
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#define CMD_READ_ARRAY_SLOW 0x03
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#define CMD_READ_ARRAY_FAST 0x0b
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#define CMD_READ_DUAL_OUTPUT_FAST 0x3b
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#define CMD_READ_DUAL_IO_FAST 0xbb
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#define CMD_READ_QUAD_OUTPUT_FAST 0x6b
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#define CMD_READ_QUAD_IO_FAST 0xeb
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#define CMD_READ_ID 0x9f
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/* Bank addr access commands */
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#ifdef CONFIG_SPI_FLASH_BAR
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# define CMD_BANKADDR_BRWR 0x17
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# define CMD_BANKADDR_BRRD 0x16
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# define CMD_EXTNADDR_WREAR 0xC5
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# define CMD_EXTNADDR_RDEAR 0xC8
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#endif
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/* Common status */
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#define STATUS_WIP (1 << 0)
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#define STATUS_QEB_WINSPAN (1 << 1)
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#define STATUS_QEB_MXIC (1 << 6)
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#define STATUS_PEC (1 << 7)
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#define SR_BP0 BIT(2) /* Block protect 0 */
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#define SR_BP1 BIT(3) /* Block protect 1 */
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#define SR_BP2 BIT(4) /* Block protect 2 */
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/* Flash timeout values */
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#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ)
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#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ)
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#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ)
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/* SST specific */
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#ifdef CONFIG_SPI_FLASH_SST
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# define CMD_SST_BP 0x02 /* Byte Program */
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# define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */
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int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
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const void *buf);
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int sst_write_bp(struct spi_flash *flash, u32 offset, size_t len,
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const void *buf);
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#endif
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/**
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* struct spi_flash_params - SPI/QSPI flash device params structure
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*
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* @name: Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO])
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* @jedec: Device jedec ID (0x[1byte_manuf_id][2byte_dev_id])
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* @ext_jedec: Device ext_jedec ID
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* @sector_size: Isn't necessarily a sector size from vendor,
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* the size listed here is what works with CMD_ERASE_64K
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* @nr_sectors: No.of sectors on this device
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* @e_rd_cmd: Enum list for read commands
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* @flags: Important param, for flash specific behaviour
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*/
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struct spi_flash_params {
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const char *name;
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u32 jedec;
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u16 ext_jedec;
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u32 sector_size;
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u32 nr_sectors;
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u8 e_rd_cmd;
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u16 flags;
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};
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extern const struct spi_flash_params spi_flash_params_table[];
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/* Send a single-byte command to the device and read the response */
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int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
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/*
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* Send a multi-byte command to the device and read the response. Used
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* for flash array reads, etc.
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*/
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int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
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size_t cmd_len, void *data, size_t data_len);
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/*
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* Send a multi-byte command to the device followed by (optional)
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* data. Used for programming the flash array, etc.
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*/
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int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
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const void *data, size_t data_len);
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/* Flash erase(sectors) operation, support all possible erase commands */
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int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len);
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/* Read the status register */
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int spi_flash_cmd_read_status(struct spi_flash *flash, u8 *rs);
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/* Program the status register */
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int spi_flash_cmd_write_status(struct spi_flash *flash, u8 ws);
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/* Lock stmicro spi flash region */
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int stm_lock(struct spi_flash *flash, u32 ofs, size_t len);
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/* Unlock stmicro spi flash region */
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int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len);
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/* Check if a stmicro spi flash region is completely locked */
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int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len);
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/* Read the config register */
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int spi_flash_cmd_read_config(struct spi_flash *flash, u8 *rc);
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/* Program the config register */
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int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc);
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/* Enable writing on the SPI flash */
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static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
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{
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return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
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}
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/* Disable writing on the SPI flash */
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static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
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{
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return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
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}
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/*
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* Send the read status command to the device and wait for the wip
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* (write-in-progress) bit to clear itself.
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*/
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int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout);
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/*
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* Used for spi_flash write operation
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* - SPI claim
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* - spi_flash_cmd_write_enable
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* - spi_flash_cmd_write
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* - spi_flash_cmd_wait_ready
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* - SPI release
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*/
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int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
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size_t cmd_len, const void *buf, size_t buf_len);
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/*
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* Flash write operation, support all possible write commands.
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* Write the requested data out breaking it up into multiple write
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* commands as needed per the write size.
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*/
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int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
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size_t len, const void *buf);
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/*
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* Same as spi_flash_cmd_read() except it also claims/releases the SPI
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* bus. Used as common part of the ->read() operation.
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*/
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int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
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size_t cmd_len, void *data, size_t data_len);
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/* Flash read operation, support all possible read commands */
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int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
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size_t len, void *data);
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#ifdef CONFIG_SPI_FLASH_MTD
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int spi_flash_mtd_register(struct spi_flash *flash);
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void spi_flash_mtd_unregister(void);
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#endif
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#endif /* _SF_INTERNAL_H_ */
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