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  • Antonio Nino Diaz's avatar
    Standardise header guards across codebase · c3cf06f1
    Antonio Nino Diaz authored
    
    All identifiers, regardless of use, that start with two underscores are
    reserved. This means they can't be used in header guards.
    
    The style that this project is now to use the full name of the file in
    capital letters followed by 'H'. For example, for a file called
    "uart_example.h", the header guard is UART_EXAMPLE_H.
    
    The exceptions are files that are imported from other projects:
    
    - CryptoCell driver
    - dt-bindings folders
    - zlib headers
    
    Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e
    Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
    c3cf06f1
v2m_flash.h 1.15 KB
/*
 * 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*/