查看“TZC internal peripheral”的源代码

==Article purpose==
The purpose of this article is to:
* briefly introduce the TZC peripheral and its main features
* indicate the level of security supported by this hardware block
* explain how it can be allocated to the three runtime contexts and linked to the corresponding software components
* explain, when necessary, how to configure the TZC peripheral.

==Peripheral overview==
The TZC peripheral is used to filter read/write accesses to the DDR controller according to TrustZone access rights, and according to Non-Secure master Address ID (NSAID) on up to 9 programmable regions.<br />

===Features===
Refer to the [[STM32MP15 resources#Reference manuals|STM32MP15 reference manuals]] for the complete list of features, and to the software components, introduced below, to see which features are implemented.

===Security support===
The TZC is a '''secure''' peripheral.

==Peripheral usage and associated software==
===Boot time===
The TZC is configured at boot time to setup DDR accesses.

===Runtime===

====Overview====
The TZC is a system peripheral and is controlled by the Arm<sup>&reg;</sup> Cortex<sup>&reg;</sup>-A7 secure.

====Software frameworks====
{{:Internal_peripherals_software_table_template}}
 | Security
 | [[TZC internal peripheral|TZC]]
 | [[OP-TEE_overview|OP-TEE TZC driver]]
 | 
 | 
 |
 |-
 |}

====Peripheral configuration====
The configuration is applied by the firmware running in the secure context.

This configuration is done in [[TF-A_overview|TF-A]]  or in [[OP-TEE_overview|OP-TEE]].

====Peripheral assignment====
{{:Internal_peripherals_assignment_table_template}}
<onlyinclude>
 | rowspan="1" | Security
 | rowspan="1" | [[TZC internal peripheral|TZC]]
 | TZC
 | <span title="system peripheral" style="font-size:21px">✓</span>
 | 
 |
 |
 |-
</onlyinclude>
 |}

==How to go further==
The TZC is an Arm<sup>&reg;</sup> peripheral:  TZC-400 TrustZone Address Space Controller<ref>http://infocenter.arm.com/help/topic/com.arm.doc.ddi0504c/DDI0504C_tzc400_r0p1_trm.pdf</ref>

==References==
<references/>

<noinclude>
[[Category:Security peripherals]]
{{PublicationRequestId | 8790 | 2018-09-19 | AlainF}}
{{ArticleBasedOnModel| Internal peripheral article model}}
</noinclude>