OTP

[English]

1 功能概述

• OTP相关的理论介绍参考: OTP的驱动

备注

• 默认CP侧开启OTP功能，AP侧没有开启。如果用户需要使用OTP功能，需要自行手动使能OTP的配置。

2 代码路径

• demo路径：

  ap\components\bk_cli\cli_otp.c

• 驱动源码路径：

  ap\middleware\driver\otp\otp_driver_v1_1.c

备注

• 1.otp_driver_v1_1.c :OTP驱动实现代码

  • 2.cli_otp.c:OTP功能测试命令实现

3 OTP 重要数据结构

typedef enum{
        OTP_READ_WRITE = 0,
        OTP_READ_ONLY,
        OTP_NO_ACCESS,
} otp_privilege_t;

typedef enum{
        OTP_BUSY = 0x1,
        OTP_ERROR = 0x2,
        OTP_WARNING = 0x4,
        OTP_WRONG = 0x8,
        OTP_FORBID = 0x10,
} otp_status_t;

说明： - OTP的权限包括：可读可写/只读/不可访问 3种权限，分别对应命令参数的 0/1/2。

• OTP的状态信息包括：忙碌/错误/警告/出错/进制 5种状态，分别对应参数 1/2/4/8/16。

4 cli命令简介

demo运行依赖的宏配置：

NAME	Description	File	value
CONFIG_OTP_V1	support OTP	ap\middleware\soc\bk7236\bk7236.defconfig	n
CONFIG_OTP_TEST	support OTP test command	ap\middleware\soc\bk7236\bk7236.defconfig	n

demo支持的命令如下表：

Command	Param	Description
otp_apb self_test	none	self-test of OTP function in ATE mode
otp_apb read_permission [item_id]	item_id: item id	Check the read permission in the OTP1 area
otp_apb write_permission [item_id][permission]	item_id: item id	Update the write permissions in the OTP1 section
	permission: RW/RO/NA
otp_apb read [item_id][size]	item_id: item id	Read the data content in the OTP1 area
	size: size of each item
otp_apb write [item_id][size][data]	item_id: item id	Update the data content in the OTP1 area
	size: size of each item
	data: need write data
otp_ahb self_test	none	self-test of OTP function in ATE mode
otp_ahb read_permission [item_id]	item_id: item id	Check the read permission in the OTP2 area
otp_ahb write_permission [item_id][permission]	item_id: item id	Update the write permissions in the OTP1 section
	permission: RW/RO/NA
otp_ahb read [item_id][size]	item_id: item id	Read the data content in the OTP1 area
	size: size of each item
otp_ahb write [item_id][size][data]	item_id: item id	Update the data content in the OTP1 area
	size: size of each item
	data: need write data