diff options
Diffstat (limited to 'include/drivers/cfi/v2m_flash.h')
| -rw-r--r-- | include/drivers/cfi/v2m_flash.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/drivers/cfi/v2m_flash.h b/include/drivers/cfi/v2m_flash.h new file mode 100644 index 0000000..6beec50 --- /dev/null +++ b/include/drivers/cfi/v2m_flash.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef V2M_FLASH_H +#define V2M_FLASH_H + +#include <stdint.h> + +/* First bus cycle */ +#define NOR_CMD_READ_ARRAY 0xFF +#define NOR_CMD_READ_ID_CODE 0x90 +#define NOR_CMD_READ_QUERY 0x98 +#define NOR_CMD_READ_STATUS_REG 0x70 +#define NOR_CMD_CLEAR_STATUS_REG 0x50 +#define NOR_CMD_WRITE_TO_BUFFER 0xE8 +#define NOR_CMD_WORD_PROGRAM 0x40 +#define NOR_CMD_BLOCK_ERASE 0x20 +#define NOR_CMD_LOCK_UNLOCK 0x60 +#define NOR_CMD_BLOCK_ERASE_ACK 0xD0 + +/* Second bus cycle */ +#define NOR_LOCK_BLOCK 0x01 +#define NOR_UNLOCK_BLOCK 0xD0 + +/* Status register bits */ +#define NOR_DWS (1 << 7) +#define NOR_ESS (1 << 6) +#define NOR_ES (1 << 5) +#define NOR_PS (1 << 4) +#define NOR_VPPS (1 << 3) +#define NOR_PSS (1 << 2) +#define NOR_BLS (1 << 1) +#define NOR_BWS (1 << 0) + +/* Public API */ +void nor_send_cmd(uintptr_t base_addr, unsigned long cmd); +int nor_word_program(uintptr_t base_addr, unsigned long data); +int nor_lock(uintptr_t base_addr); +int nor_unlock(uintptr_t base_addr); +int nor_erase(uintptr_t base_addr); + +#endif /* V2M_FLASH_H*/ |