cfi_flash.h
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/*
* (C) Copyright 2009
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __CFI_FLASH_H__
#define __CFI_FLASH_H__
#define FLASH_CMD_CFI 0x98
#define FLASH_CMD_READ_ID 0x90
#define FLASH_CMD_RESET 0xff
#define FLASH_CMD_BLOCK_ERASE 0x20
#define FLASH_CMD_ERASE_CONFIRM 0xD0
#define FLASH_CMD_WRITE 0x40
#define FLASH_CMD_PROTECT 0x60
#define FLASH_CMD_SETUP 0x60
#define FLASH_CMD_SET_CR_CONFIRM 0x03
#define FLASH_CMD_PROTECT_SET 0x01
#define FLASH_CMD_PROTECT_CLEAR 0xD0
#define FLASH_CMD_CLEAR_STATUS 0x50
#define FLASH_CMD_READ_STATUS 0x70
#define FLASH_CMD_WRITE_TO_BUFFER 0xE8
#define FLASH_CMD_WRITE_BUFFER_PROG 0xE9
#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0
#define FLASH_STATUS_DONE 0x80
#define FLASH_STATUS_ESS 0x40
#define FLASH_STATUS_ECLBS 0x20
#define FLASH_STATUS_PSLBS 0x10
#define FLASH_STATUS_VPENS 0x08
#define FLASH_STATUS_PSS 0x04
#define FLASH_STATUS_DPS 0x02
#define FLASH_STATUS_R 0x01
#define FLASH_STATUS_PROTECT 0x01
#define AMD_CMD_RESET 0xF0
#define AMD_CMD_WRITE 0xA0
#define AMD_CMD_ERASE_START 0x80
#define AMD_CMD_ERASE_SECTOR 0x30
#define AMD_CMD_UNLOCK_START 0xAA
#define AMD_CMD_UNLOCK_ACK 0x55
#define AMD_CMD_WRITE_TO_BUFFER 0x25
#define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29
#define AMD_CMD_SET_PPB_ENTRY 0xC0
#define AMD_CMD_SET_PPB_EXIT_BC1 0x90
#define AMD_CMD_SET_PPB_EXIT_BC2 0x00
#define AMD_CMD_PPB_UNLOCK_BC1 0x80
#define AMD_CMD_PPB_UNLOCK_BC2 0x30
#define AMD_CMD_PPB_LOCK_BC1 0xA0
#define AMD_CMD_PPB_LOCK_BC2 0x00
#define AMD_STATUS_TOGGLE 0x40
#define AMD_STATUS_ERROR 0x20
#define ATM_CMD_UNLOCK_SECT 0x70
#define ATM_CMD_SOFTLOCK_START 0x80
#define ATM_CMD_LOCK_SECT 0x40
#define FLASH_CONTINUATION_CODE 0x7F
#define FLASH_OFFSET_MANUFACTURER_ID 0x00
#define FLASH_OFFSET_DEVICE_ID 0x01
#define FLASH_OFFSET_LOWER_SW_BITS 0x0C
#define FLASH_OFFSET_DEVICE_ID2 0x0E
#define FLASH_OFFSET_DEVICE_ID3 0x0F
#define FLASH_OFFSET_CFI 0x55
#define FLASH_OFFSET_CFI_ALT 0x555
#define FLASH_OFFSET_CFI_RESP 0x10
#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
/* extended query table primary address */
#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15
#define FLASH_OFFSET_WTOUT 0x1F
#define FLASH_OFFSET_WBTOUT 0x20
#define FLASH_OFFSET_ETOUT 0x21
#define FLASH_OFFSET_CETOUT 0x22
#define FLASH_OFFSET_WMAX_TOUT 0x23
#define FLASH_OFFSET_WBMAX_TOUT 0x24
#define FLASH_OFFSET_EMAX_TOUT 0x25
#define FLASH_OFFSET_CEMAX_TOUT 0x26
#define FLASH_OFFSET_SIZE 0x27
#define FLASH_OFFSET_INTERFACE 0x28
#define FLASH_OFFSET_BUFFER_SIZE 0x2A
#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
#define FLASH_OFFSET_ERASE_REGIONS 0x2D
#define FLASH_OFFSET_PROTECT 0x02
#define FLASH_OFFSET_USER_PROTECTION 0x85
#define FLASH_OFFSET_INTEL_PROTECTION 0x81
#define CFI_CMDSET_NONE 0
#define CFI_CMDSET_INTEL_EXTENDED 1
#define CFI_CMDSET_AMD_STANDARD 2
#define CFI_CMDSET_INTEL_STANDARD 3
#define CFI_CMDSET_AMD_EXTENDED 4
#define CFI_CMDSET_MITSU_STANDARD 256
#define CFI_CMDSET_MITSU_EXTENDED 257
#define CFI_CMDSET_SST 258
#define CFI_CMDSET_INTEL_PROG_REGIONS 512
#ifdef CONFIG_SYS_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */
# undef FLASH_CMD_RESET
# define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */
#endif
#define NUM_ERASE_REGIONS 4 /* max. number of erase regions */
typedef union {
u8 w8;
u16 w16;
u32 w32;
u64 w64;
} cfiword_t;
/* CFI standard query structure */
/* The offsets and sizes of this packed structure members correspond
* to the actual layout in CFI Flash chips. Some 16- and 32-bit members
* are unaligned and must be accessed with explicit unaligned access macros.
*/
struct cfi_qry {
u8 qry[3];
u16 p_id; /* unaligned */
u16 p_adr; /* unaligned */
u16 a_id; /* unaligned */
u16 a_adr; /* unaligned */
u8 vcc_min;
u8 vcc_max;
u8 vpp_min;
u8 vpp_max;
u8 word_write_timeout_typ;
u8 buf_write_timeout_typ;
u8 block_erase_timeout_typ;
u8 chip_erase_timeout_typ;
u8 word_write_timeout_max;
u8 buf_write_timeout_max;
u8 block_erase_timeout_max;
u8 chip_erase_timeout_max;
u8 dev_size;
u16 interface_desc; /* aligned */
u16 max_buf_write_size; /* aligned */
u8 num_erase_regions;
u32 erase_region_info[NUM_ERASE_REGIONS]; /* unaligned */
} __attribute__((packed));
struct cfi_pri_hdr {
u8 pri[3];
u8 major_version;
u8 minor_version;
} __attribute__((packed));
#ifndef CONFIG_SYS_FLASH_BANKS_LIST
#define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
#endif
/*
* CFI_MAX_FLASH_BANKS only used for flash_info struct declaration.
*
* Use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined
*/
#if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
#define CONFIG_SYS_MAX_FLASH_BANKS (cfi_flash_num_flash_banks)
#define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS_DETECT
/* board code can update this variable before CFI detection */
extern int cfi_flash_num_flash_banks;
#else
#define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS
#endif
phys_addr_t cfi_flash_bank_addr(int i);
unsigned long cfi_flash_bank_size(int i);
void flash_cmd_reset(flash_info_t *info);
#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
void flash_write8(u8 value, void *addr);
void flash_write16(u16 value, void *addr);
void flash_write32(u32 value, void *addr);
void flash_write64(u64 value, void *addr);
u8 flash_read8(void *addr);
u16 flash_read16(void *addr);
u32 flash_read32(void *addr);
u64 flash_read64(void *addr);
#endif
#endif /* __CFI_FLASH_H__ */